Fall protection device

Details Fall protection device Fall protection device

1981-05-04

1983-07-12

Butler, Douglas C.

Brakes

Strand

24115L, 182 5, B65H 5914

Patent

active

043925553

ABSTRACT:
A fall protection safety device is disclosed which is suitable for use in environments wherein suspended particulate matter is present. The device comprises an elongated tubular housing having an upper end guide block with a centrally located opening therein and a lower end guide block with a centrally located opening therein. The lower guide block has a plurality of openings spaced apart from and around its centrally located opening. A safety line is threaded within the tubular housing and movement thereof is prevented by camming a line-gripping ball and cage arrangement associated with a piston upwardly within a conical bore of a wedging ring. The piston has a centrally located opening through which the safety line is threaded and a serrated outer surface adjacent to and circumscribed by the inner surface of the elongate tubular housing.

REFERENCES:
patent: 3220511 (1965-11-01), Holkesvick
patent: 3335469 (1967-08-01), Shand et al.
patent: 3550726 (1970-12-01), Chezem et al.
patent: 3948362 (1976-04-01), Greest

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