Self propelled floor treating machine

• US 3,220,043 A
• Filed: 03/19/1962
• Issued: 11/30/1965
• Est. Priority Date: 03/19/1962
• Status: Expired due to Term

• Current Assignee: Robert C. Lampe
• Original Assignee: Robert C. Lampe
• Inventors: Lampe, Robert C.
• Application Number:
  US04/180,615
• Time in Patent Office: 1,352 Days
• US Class Current: 15/340.2
• CPC Class Codes: A47L 5/34 with height adjustment of nozzles or dust-loosening tools

Claims

1. IN A PROPELLED FLOOR TREATING MACHINE, A BASE MEMBER, ANTI-FRICTION SUPPORT MEANS FOR SUPPORTING AT LEAST A PORTION OF THE WEIGHT OF SAID BASE MEMBER ON THE SURFACE OF A FLOOR, MEANS CARRIED BY SAID BASE MEMBER FOR TREATING SAID SURFACE, A PAIR OF DRIVING WHEEL MEANS SPACED LONGITUDINALLY OF SAID BASE MEMBER WITH RESPECT TO THE DIRECTION OF MOVEMENT THEREOF CARRIED BY SAID BASE MEMBER SOLELY FOR DRIVING SAID MACHINE AND CAPABLE OF SUPPORTING AT LEAST ANOTHER PORTION OF THE WEIGHT THEREOF, MEANS FOR SEPARATELY AND CONTINUOUSLY ROTATING THE RESPECTIVE WHEEL MEANS OF SAID PAIR IN OPPOSITE DIRECTIONS AND AT A SLOW SPEED SUITABLE FOR PROPELLING SAID MACHINE OVER SAID SURFACE WITHOUT SLIPPAGE OF SAID WHEEL MEANS RELATIVE TO SAID SURFACE WHEN IN CONTACT THEREWITH, AND MEANS FOR SELECTIVELY LOWERING EITHER OF SAID DRIVING