Stair-climbing crawler transporter

Details Stair-climbing crawler transporter Stair-climbing crawler transporter

1995-08-16

1997-10-14

Hurley, Kevin

Motor vehicles

Special driving device

Portable track

180 932, B62D 55075

Patent

active

056762151

ABSTRACT:
A stair-climbing crawler transporter having a pair of belt supporting units contacting with an inner surface of the belt crawler at a ground contacting section between driving wheels and grounding wheels on both sides, and a jack connected to a bent connecting portion of the belt supporting unit. The belt supporting units are straightly supported by extending a piston rod of the jack on the way of stairs and are bent to form an inverted "V" by retracting the piston rod of the jack when the substantially intermediate portion of the ground contacting section contacts with a corner of the top step of stairs. Thus, the stair-climbing crawler transporter can smoothly ascend and descend stairs without tilting largely.

REFERENCES:
patent: 3276531 (1966-10-01), Hale et al.
patent: 3711164 (1973-01-01), Chaumont
patent: 3756667 (1973-09-01), Bombardier et al.
patent: 3887243 (1975-06-01), Chaumont
patent: 4483407 (1984-11-01), Iwamoto et al.
patent: 4566551 (1986-01-01), Feliz
patent: 4702331 (1987-10-01), Hagihara et al.
patent: 4915184 (1990-04-01), Watkins
patent: 5395129 (1995-03-01), Kao

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