Combination wheeled and crawler type support for vehicles

• US 2,917,120 A
• Filed: 09/16/1957
• Issued: 12/15/1959
• Est. Priority Date: 12/17/1954
• Status: Expired due to Term

• Current Assignee: Dale Gates, Harold Gates Joseph
• Original Assignee: Dale Gates, Harold Gates Joseph
• Inventors: HAROLD GATES JOSEPH, Gates, Dale
• Application Number:
  US03/684,299
• Time in Patent Office: 820 Days
• US Class Current: 180/9.36
• CPC Class Codes: B62B 2301/256 by using endless belts
• CPC Class Codes: B62B 5/02 providing for travelling up or down a flight of stairs chairs or multi-track cycles specially adapted for invalids A61G5/00
• 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: B62D 55/26 Ground engaging parts or elements tracks specially adapted for amphibious vehicles B60F3/0015

Claims