Christopher J Knowlton

US Patent:

6357070, Mar 19, 2002

Filed:

Feb 16, 2000

Appl. No.:

09/505484

Inventors:

Daniel C. Venard - Littleton CO
Christopher M. Knowlton - Pinehurst NC
Robert J. OHara - Castle Rock CO

Assignee:

Windsor Industries, Inc. - Englewood CO

International Classification:

A47L 1114

US Classification:

15 501, 15 503, 15320, 153404, 180 685

Abstract:

A cleaning machine that can simultaneously perform the cleaning operations of sweeping, scrubbing and burnishing is provided. The cleaning machine is battery-operated and is driven by a riding operator. A pivotal door is located at the rear of the cleaning machine. The burnishing assembly is pivotal with the door. Upon opening the door, access to a battery pack and a cart that supports the battery pack is available. The battery pack can be removed from the cleaning machine at its rear using the cart. A charged battery pack with cart is then positioned in the battery storage assembly of the cleaning machine to replace the removed battery pack and cart. A pair of ramp members facilitate desired placement of the cart and battery pack within the cleaning machine.

US Patent:

54675006, Nov 21, 1995

Filed:

Jan 27, 1993

Appl. No.:

8/009816

Inventors:

Robert J. O'Hara - Denver CO
Christopher M. Knowlton - West End NC

Assignee:

AAR Corp. - Elk Grove Village IL

International Classification:

A47L 11283

US Classification:

15320

Abstract:

A vehicle for moving in a longitudinal direction and cleaning a surface has a scrub brush, a cleaning fluid dispenser, a squeegee, drive means, and at least one steering wheel which is mounted to the vehicle such that it may be selectively turned for steering the vehicle. The vehicle is provided with a steering mechanism for turning the steering wheel, whereby turning a steering input member a specific angular magnitude in one direction causes the steering wheel to turn a greater angular magnitude in the opposite direction.