Selective wheeled or endless belt supports for self-propelled vehicles

• US 2,765,860 A
• Filed: 10/12/1953
• Issued: 10/09/1956
• Est. Priority Date: 10/12/1953
• Status: Expired due to Term

• Current Assignee: Robert E. Church
• Original Assignee: Robert E. Church
• Inventors: Church, Robert E.
• Application Number:
  US03/385,527
• Time in Patent Office: 1,093 Days
• US Class Current: 180/6.4
• CPC Class Codes: A61G 2203/723 Impact absorbing means, e.g. bumpers or airbags
• CPC Class Codes: A61G 5/061 for climbing stairs
• CPC Class Codes: A61G 5/066 with endless belts
• CPC Class Codes: B62D 55/075 Tracked vehicles for ascending or descending stairs, steep slopes or vertical surfacesmagnetic or pneumatic ground-engaging parts B62D55/265; chairs or multi-track cycles specially adapted for invalids A61G5/00
• CPC Class Codes: Y10S 180/907 Motorized wheelchairs
• CPC Class Codes: Y10S 280/10 Stair climbing chairs

Claims