Floor treatment apparatus

• US 8,245,345 B2
• Filed: 10/05/2007
• Issued: 08/21/2012
• Est. Priority Date: 05/14/2003
• Status: Active Grant

• Current Assignee: Karcher North America Incorporated (Alfred Kärcher SE & Co. KG)
• Original Assignee: Karcher North America Incorporated (Alfred Kärcher SE & Co. KG)
• Inventors: Pedlar, Roger, Doll, Brian J., Simmon, Rusty, Green, Nevin, Pearson, Daniel, Tran, Loi X., Gorsky, Robert S., Shark, Eric L., Venard, Daniel C.
• Primary Examiner(s): CHIN, RANDALL E
• Application Number:
  US11/868,353
• Publication Number:
  US 20090094784A1
• Time in Patent Office: 1,782 Days
• Field of Search: 15/491, 15/501, 15/78, 15/98, 153/20, 153/21, 153/401, 153/403, 154/01, 180/6.2, 180/211, D12/85
• US Class Current: 15/49.1
• CPC Class Codes: A47L 11/03 characterised by having provisions for supplying cleaning or polishing agents A47L11/065, A47L11/085, A47L11/125, A47L11/145, A47L11/161, A47L11/1625, A47L11/185, A47L11/201 take precedence
• CPC Class Codes: A47L 11/145 with supply of cleaning agents
• CPC Class Codes: A47L 11/16 the tools being disc brushes
• CPC Class Codes: A47L 11/20 combined with vacuum cleaning devices
• CPC Class Codes: A47L 11/24 Floor-sweeping machines, motor-driven
• CPC Class Codes: A47L 11/292 having rotary tools A47L11/30 takes precedence
• CPC Class Codes: A47L 11/302 having rotary tools
• CPC Class Codes: A47L 11/305 the tools being disc brushes
• CPC Class Codes: A47L 11/34 Machines for treating carpets in position by liquid, foam, or vapour, e.g. by steam
• CPC Class Codes: A47L 11/4016 specially adapted for collecting fluids
• CPC Class Codes: A47L 11/4038 Disk shaped surface treating tools
• CPC Class Codes: A47L 11/4041 Roll shaped surface treating tools
• CPC Class Codes: A47L 11/4044 Vacuuming or pick-up tools; Squeegees
• CPC Class Codes: A47L 11/4061 Steering means; Means for avoiding obstacles; Details related to the place where the driver is accommodated
• CPC Class Codes: A47L 11/4066 Propulsion of the whole machine
• CPC Class Codes: A47L 11/4083 Liquid supply reservoirs; Preparation of the agents, e.g. mixing devices
• CPC Class Codes: A47L 11/4088 Supply pumps; Spraying devices; Supply conduits
• CPC Class Codes: B08B 2203/0217 Use of a detergent in high pressure cleaners; arrangements for supplying the same
• CPC Class Codes: B08B 2203/027 Pump details
• CPC Class Codes: B08B 3/026 Cleaning by making use of hand-held spray guns; Fluid preparations therefor
• CPC Class Codes: B60L 15/2018 : for braking on a slope
• CPC Class Codes: B60L 2200/40 : Working vehicles
• CPC Class Codes: B60L 2240/12 : Speed
• CPC Class Codes: B60L 2270/142 : acoustic
• CPC Class Codes: B60L 2270/145 : Structure borne vibrations
• CPC Class Codes: B60L 3/00 : Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption methods or circuit arrangements for monitoring or controlling batteries or fuel cells B60L58/00
• CPC Class Codes: B60L 50/66 : Arrangements of batteries
• CPC Class Codes: B60L 7/24 : with additional mechanical or electromagnetic braking
• CPC Class Codes: Y02T 10/64 : Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/72 : Electric energy management in electromobility

Abstract

The present invention relates generally to an apparatus for cleaning or otherwise treating a floored surface that includes a platform adapted to support the weight of an operator. In addition, one embodiment of the present invention is capable of generally performing 360° turns to facilitate the treatment of difficult to access portions of the floored surface.

Claims

1. A floor treatment apparatus comprising:

a chassis having a front and a back and with a lower surface, a front surface adjacent the front, a rear surface adjacent the back, a left surface, and a right surface;

a first wheel operably interconnected to the lower surface adjacent to the left surface and located closer to the rear surface than the front surface;

a second wheel operably interconnected to the lower surface adjacent the right surface and located closer to the rear surface than the front surface;

a horizontal platform located within the chassis and positioned directly above an axis extending between the center of the first wheel and the center of the second wheel, the horizontal platform also being positioned closer to a bottommost edge of the left surface and a bottommost edge of the right surface than an uppermost edge of the left surface and an uppermost edge of the right surface, the horizontal platform includes a throttle, an operator presence switch, which interrupts the throttle when not depressed, and a platform switch, which must be engaged in order for the throttle to be effective;

a steering wheel operably interconnected to a third wheel located approximately between the left surface and the right surface that allows the chassis to rotate 360 degrees without substantially moving in other directions; and

a power plant interconnected to at least one of the wheels.

2. The floor treatment apparatus of claim 1, wherein the chassis has a maximum outside envelope of about 50.75 inches high, 26.5 inches wide, and 51.5 inches long.

3. The floor treatment apparatus of claim 1, wherein the horizontal platform includes a suspension system.

4. The floor treatment apparatus of claim 1, further comprising a braking mechanism.

5. The floor treatment apparatus of claim 1, wherein the left surface and the right surface of the chassis extend upwardly to form an extended opening in the rear surface that accommodates the horizontal platform.

6. The floor treatment apparatus of claim 1, wherein the distance between the horizontal platform and the steering wheel is greater that the distance between the horizontal platform and the bottommost edge of the left surface and the bottommost edge of the right surface of the chassis.

7. A floor cleaning machine, comprising:

a chassis having at least one front wheel and at least two rear wheels;

a drive mechanism to provide locomotion to the machine, the drive mechanism housed within the chassis and interconnected to at least one of the wheels;

a horizontal platform substantially located within the chassis and positioned directly above an axis extending between the centers of the at least two rear wheels and positioned below a steering mechanism which is housed within the chassis, the horizontal platform also being positioned nearer to a bottommost surface of the machine than an uppermost surface of the machine, the horizontal platform including a throttle, an operator presence switch, and a platform switch; and

wherein the machine is allowed to rotate 360 degrees without substantially moving in other directions.

8. The floor cleaning machine of claim 7, wherein the chassis also includes a left surface and a right surface that extend upwardly from a bottommost surface to form an opening in a rear surface that accommodates the horizontal platform.

9. The floor cleaning machine of claim 8, wherein the distance between the horizontal platform and the steering mechanism is greater than the distance between the horizontal platform and the bottommost surface.