Wheel lift assembly for floor treating apparatus
AssigneeNilfisk, Inc.
InventorsDonald Joseph Legatt, William Randall Stuchlik, Robert D. Abrams
Life of this patent
Estimating the term…
Abstract
A floor treating apparatus comprises a chassis, a cleaning head assembly and a wheel lift assembly. The chassis has a wheel assembly and a handle assembly. The cleaning head assembly comprises a motor mounting plate that is suspended from the chassis at pivot points. The wheel lift assembly comprises a cam mounted between the chassis and the motor mounting plate, and a lever for rotating the cam to tilt the motor mounting plate on the pivot points.
Claims27
A floor treating apparatus comprising:
- a chassis having a wheel assembly and a handle assembly;
- a cleaning head assembly comprising:
- a motor mounting plate suspended from the chassis at pivot points;
- and
- a wheel lift assembly comprising:
- a cam mounted between the chassis and the motor mounting plate;
- and
- a lever for rotating the cam to tilt the motor mounting plate on the pivot points.
A floor scrubber comprising:
- a wheel assembly including a pair of wheels mounted to a chassis;
- a cleaning head assembly comprising:
- a motor mounting plate pivotably coupled to the chassis;
- a motor mounted to the motor mounting plate;
- and
- a cleaning pad drive coupled to the motor;
- and
- a lift assembly configured to change an angle between the motor mounting plate and the chassis.
A truck unit for a floor machine, the truck unit comprising:
- a chassis comprising:
- a deck;
- and
- first and second rails extending from the deck;
- a pair of wheels mounted to the chassis along a rotational axle proximate a first end of the first and second rails, the rotational axle being connected to the chassis in a fixed relationship;
- first and second pivot pins mounted to the first and second rails, respectively, proximate a second end of the first and second rails;
- a cam shaft supported by the first or the second rail between the first and second ends;
- a cam mounted to the cam shaft between the first and second rails;
- and
- a lever connected to the cam shaft outside of the chassis.
An apparatus for treating a floor surface, the apparatus comprising:
- a chassis;
- a pair of wheels configured to rotate on the chassis at a fixed location;
- a handle assembly connected to the chassis;
- a mounting plate attached to the chassis at a first pivoting connection;
- a floor treating assembly connected to the mounting plate, the floor treating assembly including a media drive for a floor treating media;
- and
- wherein the chassis, the handle assembly and the pair of wheels are movable relative to the mounting plate at the first pivoting connection between a first operating position and a second operating position;
- wherein in the first operating position the chassis is free to rotate at the first pivoting connection with the media drive and the pair of wheels contacting the floor surface, and in the second position the chassis is locked in a pivoted position such that the media drive contacts the floor surface and the wheels are fixed in a raised position above the floor surface.
Dependencies are inferred from the claim text.