Articulated floor scrubber
First Claim
1. An articulated vehicle for cleaning a surface comprising:
- a front portion that includes a front exterior surface;
a rear portion that includes a rear exterior surface;
means for pivotally connecting said front portion and said rear portion;
a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface;
a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface;
wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion;
wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion;
steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion about a pivot point;
drive power means for applying rotational power to at least one wheel of said front and rear set of wheels;
brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels;
scrubbing means for scrubbing a surface as the vehicle moves over the surface; and
an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle;
wherein said means for pivotally connecting includes an arm having a first arm end and a second arm end and in which said pivot point is located between said first arm end and said second arm end; and
said means for steering includes a cable means having a first cable end operatively connected to said first arm end and a second cable end operatively connected to said second arm end.
7 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides an articulated vehicle for scrubbing floors that provides an operator station for riding on the vehicle and is particularly useful in cleaning relatively large floor surfaces that are defined by intersecting aisles of relatively narrow width. In this regard, the dimensional characteristics of the vehicle body facilitate tight turns in such aisles. Further, the location and/or shape of components of the vehicle and/or the positional relationship of one component to another component facilitate turns in narrow aisles. The vehicle also incorporates shock absorbing systems for the scrub head and vacuum squeegee that benefit the noted application.
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Citations
76 Claims
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1. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface; a rear portion that includes a rear exterior surface; means for pivotally connecting said front portion and said rear portion; a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion about a pivot point; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; and an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle; wherein said means for pivotally connecting includes an arm having a first arm end and a second arm end and in which said pivot point is located between said first arm end and said second arm end; and said means for steering includes a cable means having a first cable end operatively connected to said first arm end and a second cable end operatively connected to said second arm end. - View Dependent Claims (2, 3, 4, 5, 10, 11, 12, 13, 14, 15)
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6. An articulated vehicle, as claimed in claimed 1, wherein:
said scrubbing means includes a recovery tank for use in retaining cleaning solution recovered from the surface. - View Dependent Claims (7, 8, 9)
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16. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface; a rear portion that includes a rear exterior surface; means for pivotally connecting said front portion and said rear portion that includes an arm having a first arm end and a second arm end; a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion about a pivot point and in which said pivot point is located between said first arm end and said second arm end; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; and an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle; wherein said means for steering comprises; a steering wheel; a steering column operatively connected to said steering wheel; and cable means operatively connecting said steering column and said arm.
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17. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface; a rear portion that includes a rear exterior surface; means for pivotally connecting said front portion and said rear portion; a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion about a pivot point; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; and an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle; wherein said drive power means includes a motor for providing rotational power to at least one of said rear set of wheels; and wherein said motor is associated with said rear portion.
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18. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface; a rear portion that includes a rear exterior surface; means for pivotally connecting said front portion and said rear portion; a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion about a pivot point; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; and an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle; wherein said drive power means comprises; an electric motor for providing rotational power to at least one wheel of said rear set of wheels; and battery means for providing electrical power to said electric motor; wherein said electric motor is associated with said rear portion. - View Dependent Claims (19, 20)
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21. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface; a rear portion that includes a rear exterior surface; means for pivotally connecting said front portion and said rear portion; a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion about a pivot point; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; and an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle; wherein said brake means includes a braking actuator; wherein said braking actuator is associated with said rear portion and provides a braking force to at least one of said rear set of wheels.
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22. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface; a rear portion that includes a rear exterior surface; means for pivotally connecting said front portion and said rear portion; a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion about a pivot point; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; and an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle; wherein said scrubbing means includes a solution tank for use in providing a cleaning solution for scrubbing the surface; wherein said solution tank is associated with said front portion. - View Dependent Claims (23, 24, 25)
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26. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface; a rear portion that includes a rear exterior surface; means for pivotally connecting said front portion and said rear portion; a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion about a pivot point; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; and an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle; wherein said scrubbing means comprises; a scrub head that, in the absence of a lateral force being applied thereto, is in a first position at which at least a portion of said scrub head extends outside an area defined by said front exterior surface; and shock means, responsive to a lateral force applied to said portion of said scrub head, for absorbing said lateral force by permitting said scrub head to move from said first position to a second position that is different from said first position and returning said scrub head from said second position to said first position after said lateral force is removed from said scrub head; wherein said shock means includes means for rotating said scrub head about an axis that is substantially perpendicular to the surface. - View Dependent Claims (27, 28, 29)
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30. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface; a rear portion that includes a rear exterior surface; means for pivotally connecting said front portion and said rear portion; a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion about a pivot point; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; and an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle; wherein said scrubbing means comprises; a scrub head for scrubbing the surface; and means for permitting an operator to attach and detach said scrub head from the vehicle substantially without the use of tools. - View Dependent Claims (31, 32, 33)
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34. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface; a rear portion that includes a rear exterior surface; means for pivotally connecting said front portion and said rear portion; a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion about a pivot point; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; and an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle; wherein said scrubbing means includes a recovery tank for use in retaining cleaning solution recovered from the surface; wherein said recovery tank includes a first recovery tank portion and a second recovery tank portion that is separated from and substantially parallel to said first recovery tank portion.
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35. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface; a rear portion that includes a rear exterior surface; means for pivotally connecting said front portion and said rear portion; a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion about a pivot point; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; and an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle; wherein said scrubbing means includes a recovery tank for use in retaining cleaning solution recovered from the surface; wherein said recovery tank has a shape so that the exterior of said recovery tank defines a cavity.
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36. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface; a rear portion that includes a rear exterior surface; means for pivotally connecting said front portion and said rear portion; a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion about a pivot point; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; and an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle; wherein said scrubbing means includes a vacuum squeegee for use in recovering fluid from the surface; wherein said vacuum squeegee is associated with said rear portion.
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37. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface; a rear portion that includes a rear exterior surface; means for pivotally connecting said front portion and said rear portion; a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion about a pivot point; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; and an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle;
wherein said scrubbing means comprises;wherein said scrubbing means comprises; a vacuum squeegee for use in removing cleaning solution from the surface and that, in the absence of a lateral force being applied thereto, has a portion that extends beyond an area defined by said rear exterior surface of said rear portion; and shock means, operatively attached to said vacuum squeegee, for retaining said vacuum squeegee in a first position in the absence of a lateral force being applied thereto and permitting said vacuum squeegee to move from said first position to a second position when a lateral shock force is applied to said vacuum squeegee. - View Dependent Claims (38, 39)
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40. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface; a rear portion that includes a rear exterior surface; means for pivotally connecting said front portion and said rear portion; a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion about a pivot point; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; and an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle; wherein said scrubbing means comprises; a vacuum squeegee for use in removing cleaning solution from the surface; a rod having a first end attached to said vacuum squeegee and a second end attached to a portion of one of said front portion and said rear portion at a pivot point; camming means having a camming surface for contacting said rod at a location between said first and second ends; and actuator means, operatively attached to said camming means, for causing said camming surface to engage said rod and thereby rotate said rod and said vacuum squeegee about said pivot point to displace said vacuum squeegee away from the surface.
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41. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface; a rear portion that includes a rear exterior surface; means for pivotally connecting said front portion and said rear portion; a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion about a pivot point; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; and an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle; wherein said scrubbing means includes a recovery tank for retaining cleaning solution recovered from the surface; and said drive means includes motor means for providing rotational power to at least one of said rear set of wheels; wherein both said recovery tank and said motor means are associated with said rear portion. - View Dependent Claims (42, 43, 44)
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45. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface; a rear portion that includes a rear exterior surface; means for pivotally connecting said front portion and said rear portion; a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion about a pivot point; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; and an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle; wherein said scrubbing means includes a recovery tank for retaining cleaning solution recovered from the surface; and said drive power means includes an electric motor and battery means for providing electrical power to said electric motor; wherein said recovery tank is associated with said rear portion; wherein said electric motor provides rotational power to at least one of said rear set of wheels. - View Dependent Claims (46)
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47. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface; a rear portion that includes a rear exterior surface; means for pivotally connecting said front portion and said rear portion; a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion about a pivot point; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle; wherein said scrubbing means includes a recovery tank, associated with said rear portion, for retaining cleaning solution recovered from the surface; said drive power means includes motor means, associated with said rear portion, for providing rotational power to at least one of said rear set of wheels; wherein, during scrubbing operations, said recovery tank is in a first position that covers at least a portion of said motor means; and means for facilitating displacement of said recovery tank from said first position to a second position that is different from said first position and permits access to said portion of said motor means that is covered when said recovery tank is in said first position. - View Dependent Claims (48)
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49. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface; a rear portion that includes a rear exterior surface; means for pivotally connecting said front portion and said rear portion; a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion about a pivot point; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; and an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle; wherein said rear exterior surface includes a front side surface, a backside surface, a first side surface extending from said front side surface to said backside surface, and a second side surface extending from said front side surface to said backside surface; wherein at least one of said first and second side surfaces is curved.
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50. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface; a rear portion that includes a rear exterior surface; means for pivotally connecting said front portion and said rear portion; a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion about a pivot point; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; and an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle; wherein said operator station includes a seat; and said rear exterior surface includes a notch for accommodating an elbow of an operator located in said seat during turning of the vehicle.
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51. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface; a rear portion that includes a rear exterior surface; means for pivotally connecting said front portion and said rear portion; a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion and are all non-steerable; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion and are all non-steerable; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of a t least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; an operator station, operatively associated with said front portion, for accommodating an operator residing on the vehicle; wherein said scrubbing means includes a plurality of tanks including a solution tank for providing a cleaning solution for use in scrubbing the surface and a recovery tank for retaining cleaning solution recovered from the surface; wherein said solution tank and said recovery tank are associated with different ones of said front portion and said rear portion. - View Dependent Claims (52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70)
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71. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface; a rear portion that includes a rear exterior surface; means for pivotally connecting said front portion and said rear portion; a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion about a pivot point; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; and an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle; wherein said scrubbing means includes a recovery tank for retaining cleaning solution recovered from the surface; and said drive means includes an electric motor and battery means for providing electrical power to said electric motor; wherein both said recovery tank and said battery means are associated with said rear portion. - View Dependent Claims (72)
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73. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface and a solution tank; a rear portion that includes a rear exterior surface; means for pivotally connecting said front portion and said rear portion; a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion about a pivot point; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; and an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle; wherein said front exterior surface includes a front leading surface, a front trailing surface, a front first side surface extending from said front leading surface to said front trailing surface, and a front second side surface extending from said front leading surface to said front trailing surface; said rear exterior surface includes a rear leading surface, a rear trailing surface, a rear first side surface extending from said rear leading surface to said rear trailing surface, and a rear second side surface extending from said rear leading surface to said rear trailing surface; wherein said front trailing surface has a first shape; wherein said rear leading surface has a flat shape; wherein during a turn of the articulated vehicle, a portion of said rear leading surface moves closer to a portion of said front trailing surface and a second portion of said rear leading surface moves away from a second portion of said front trailing surface. - View Dependent Claims (74, 75)
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76. An articulated vehicle for cleaning a surface comprising:
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a front portion that includes a front exterior surface, said front exterior surface having a width no greater than about 34 inches; a rear portion that includes a rear exterior surface, said rear exterior surface having a width no greater than about 34 inches; means for pivotally connecting said front portion and said rear portion, an articulated angle being defined when said front portion is pivoted relative to said rear portion and in which said articulated angle includes an angle of about 71°
;a front set of wheels, operatively connected to said front portion, for use in moving said front portion over a surface, said front set of wheels includes two wheels having a first common axis of rotation; a rear set of wheels, operatively connected to said rear portion, for use in moving said rear portion over a surface, said rear set of wheels includes two wheels having a second common axis of rotation; wherein, during a turn, said first and second common axes of rotation converge at an intersection point; wherein a side surface of said rear exterior surface lies entirely within a radius from said intersection point having a length substantially equal to the width of an aisle and in which the width of the aisle is no greater than about 46 inches; wherein said front set of wheels are all of the surface contacting, locomotion related wheels associated with said front portion, all non-steerable, and all incapable of supporting said front portion for rolling movement over a surface if said front portion is disconnected from said rear portion; wherein said rear set of wheels are all of the surface contacting, locomotion related wheels associated with said rear portion, all non-steerable, and all incapable of supporting said rear portion for rolling movement over a surface if said rear portion is disconnected from said front portion; steering means, operatively connected to said means for pivotally connecting, for causing pivotal relative movement between said front portion and said rear portion; drive power means for applying rotational power to at least one wheel of said front and rear set of wheels; brake means for decreasing the rotational velocity of at least one wheel of said front and rear set of wheels; scrubbing means for scrubbing a surface as the vehicle moves over the surface; and an operator station, operatively associated with said front portion, for accommodating an operator on the vehicle.
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Specification