IP Library Granted Patent US 8,245,345
Granted Patent B2
US 8,245,345 · App. 11/868,353 · Granted Aug 21, 2012

Floor treatment apparatus

Assignee: Karcher North America, Inc.
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Quick Facts
Patent No.
US 8,245,345
App. No.
11/868,353
Granted
Aug 21, 2012
Kind
B2
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 (19)

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.

Assignments (3)
MERGER Recorded Apr 29, 2009
From: KARCHER FLOOR CARE, INC.
To: KARCHER NORTH AMERICA, INC.
Reel/Frame 022611/0903 →
CHANGE OF NAME Recorded Apr 27, 2009
From: CASTLE ROCK INDUSTRIES, INC.
To: KARCHER FLOOR CARE, INC.
Reel/Frame 022606/0262 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 19, 2009
From: PEDLAR, ROGER; DOLL, BRIAN J.; SIMMON, RUSTY; GREEN, NEVIN; PEARSON, DANIEL; TRAN, LOI X.; GORSKY, ROBERT S.; SHARK, ERIC L.; VENARD, DANIEL C.
To: CASTLE ROCK INDUSTRIES, INC.
Reel/Frame 022280/0423 →
Continuity (6)
Continuation 11059663 · Feb 15, 2005
Continuation In Part 10737027 · Dec 15, 2003
Continuation In Part 10438485 · May 14, 2003
Provisional Application 60545153 · Feb 16, 2004
Provisional Application 60627606 · Nov 12, 2004
Related Publication 20090094784A1 · Apr 16, 2009