Mobile surface cleaning machine having side mounted squeegees

• US 4,158,901 A
• Filed: 12/16/1977
• Issued: 06/26/1979
• Est. Priority Date: 12/16/1977
• Status: Expired due to Term

• Current Assignee: Advance Machine Co. (Nilfisk Holding A/S)
• Original Assignee: Advance Machine Co. (Nilfisk Holding A/S)
• Inventors: Wulff, Richard F., Johnson, Everett E.
• Primary Examiner(s): Moore, Christopher K.
• Application Number:
  US05/861,496
• Time in Patent Office: 557 Days
• Field of Search: 15/50 R, 15/50 C, 15/320, 15/401
• US Class Current: 15/401
• CPC Class Codes: A47L 11/30 by suction
• CPC Class Codes: A47L 11/4044 Vacuuming or pick-up tools; Squeegees
• CPC Class Codes: A47L 11/4055 for lifting the tools to a non-working position
• 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: E01H 1/103 in which the soiled loosening or washing liquid is removed, e.g. by suction removing liquids in general E01H1/108
• CPC Class Codes: E01H 1/108 Removing liquids or semi- liquids, e.g. absorbing rain water, sucking-off mud in road washing machines E01H1/103; in snow melting E01H5/108; applying absorbing agents on oil or the like E01H1/001; constructional measures for draining roads E01C11/224

Abstract

A mobile surface cleaning machine with rear mounted steerable wheels steered by a steering wheel, first and second squeegee blades pivotally mounted on each side, respectively, on the rear of the machine. A cam carried by the rear wheels with first and second levers pivotally mounted on the machine, each of the levers having a roller mounted thereon for contact with the cam. A first flexible cable connected to the first lever and the first squeegee and a second cable connected to the second lever and said second squeegee. A sprocket carried by the cam. A chain carried by said sprocket and the steering wheel whereby actuation of the steering wheel to turn the machine in one direction lowers one of said squeegees to a surface on which the machine is operated and maintains the other squeegee raised from the machine with both squeegees maintained in raised positions when the machine is steered in a forward direction.

Claims

1. A mobile surface cleaning machine having a frame mounting floor treating members, rear steering wheels with steering means therefore, and a rear mounted vacuum pickup, the improvement including a squeegee mounted on each side of the frame, said improvement comprising:

(a) a first squeegee,

(b) means movably mounting said first squeegee on one side of said frame,

(c) a second squeegee,

(d) means movably mounting said second squeegee on the other side of said frame, said first and second squeegees being in a raised position when the machine is in forward travel,

(e) means for lowering said first squeegee to a surface on which the machine is positioned and maintaining said second squeegee in a raised position from the surface responsive to said steering means being operated to turn said machine from a straight ahead direction in the direction of said one side of said frame and maintaining said first squeegee in a raised position and lowering said second squeegee to a surface when said steering means is operated to turn said machine from a straight ahead direction in the direction of said other side of said frame.

2. The device of claim 1 in which said means movably mounting a squeegee on each side of said frame includes a pivot connecting one end of each squeegee to the frame for pivotal movement relative thereto.

3. The device of claim 1 in which said means for lowering and raising each of said squeegees includes:

(a) first and second levers pivotally carried by said frame,

(b) means connecting said first lever to said first squeegee,

(c) means connecting said second lever to said second squeegee,

(d) a cam,

(e) said cam carried by and rotatable with said steering means and contactable by each of said levers for actuation of the levers to thereby raise and lower said squeegees when said steering means is actuated.

4. The device of claim 3 in which said means connecting each of said first and second levers to each of said first and second squeegees includes an elongated flexible member.

5. The device of claim 3 in which said cam rotatably carried by said steering means includes

(a) a post rotatably carried by said frame and mounting said cam,

(b) said post mounting said rear steering wheels.

6. A mobile surface cleaning machine comprising in combination:

(a) a frame having floor treating members thereon and,

(b) wheels mounted on the frame,

(c) steering wheels,

(d) means pivotally mounting said steering wheels on the rear of said frame,

(e) a first squeegee for cleaning a surface treated by said floor treating members,

(f) means movably mounting said first squeegee on one side of said frame, p1 (g) a second squeegee for cleaning a surface treated by said floor treating members,

(h) means movably mounting said second squeegee on the other side of said frame,

(i) a cam carried by said means pivotally mounting said steering wheels,

(j) steering means carried by said frame,

(k) first and second levers pivotally carried by said frame each contactable by said cam,

(l) means connecting said first lever to said first squeegee for moving said first squeegee when said cam is actuated to contact said first lever,

(m) means connecting said second lever means to said second squeegee for moving said second squeegee when said cam is actuated to contact said second lever,

(n) said steering means connected to said cam whereby actuation of said steering means actuates said steering wheels in a direction towards one side of said frame and lowers said first squeegee to a surface while raising said second squeegee, said steering means when actuated to direct said wheels towards the other side of said frame lowers said second squeegee and raises said first squeegee, both of said squeegees being maintained in a raised condition when the machine is operated in a straight ahead direction.

7. The device of claim 6 in which said means movably mounting each of said first and second squeegees on said frame includes a pivot.

8. A mobile surface cleaning machine comprising in combination:

(a) a frame having floor treating members thereon,

(b) support wheels mounted on said frame,

(c) steering wheels mounted on said frame,

(d) means for steering said steering wheels,

(e) a first squeegee movably mounted on one side of said frame,

(f) a second squeegee movably mounted on the opposite side of said frame,

(g) means connecting said steering means with said first and second squeegees for lowering said first squeegee and raising said second squeegee when said steering means is operated to direct said steering wheels toward one side of said frame and raising said first squeegee and lowering said second squeegee when said steering means is operated to direct said steering wheels toward the other side of said frame, both of said squeegees being maintained in a raised condition when the machine is operated in a straight ahead direction.