Ascending cam

Details Ascending cam Ascending cam

1995-02-03

1997-09-09

Melius, Terry Lee

Fire escape, ladder, or scaffold

Torso harness

Strand-engaging, with descent retarder

182193, A62B 114, B65H 5916

Patent

active

056646402

ABSTRACT:
An improved cam for use in a rope gripping device features a concave cam working surface. Gear-like teeth, each having a flat top are placed perpendicular to the rope inside the concave cam working surface. The cutting force is reduced, and the grip strength is increased. An integral safety lock can be set in either the open or closed position.

REFERENCES:
patent: 3852943 (1974-12-01), Healy
patent: 3946989 (1976-03-01), Tsuda
patent: 4034828 (1977-07-01), Rose et al.
patent: 4253218 (1981-03-01), Gibbs
patent: 4502668 (1985-03-01), Dodge, Jr.
patent: 4560029 (1985-12-01), Dalmaso
patent: 4657110 (1987-04-01), Wolner
patent: 4881622 (1989-11-01), Machal
patent: 5265696 (1993-11-01), Casebolt
patent: 5316103 (1994-05-01), Bell et al.
Ascender catalog #ULTAS02, pp. 3, 4, and 5. (date unknown).

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