Swiveling hoist assembly

Details Swiveling hoist assembly Swiveling hoist assembly

1997-11-17

2000-01-25

Ellis, Christopher P.

Handling: hand and hoist-line implements

Grapple

Expanding

294 89, 294 11, 403 79, 403164, B66C 166

Patent

active

060170719

ABSTRACT:
A hoist assembly having a swiveling head with a pivoting shackle. A lift swivel is captured by a housing and is rotatable relative to the housing. A shackle assembly including a hoist ring is fastened to the lift swivel. A lift bolt is threaded into the housing opposite the shackle assembly. The lift bolt includes an axially extending shaft for threading into a corresponding hole in a structure to be lifted. The end of the shaft in the hole is expandable to lock the shaft in the structure hole. A retainer such as a snap ring, or a jam ring and setscrews may be provided to securely lock the lift bolt to the housing. The lift bolt is threaded into the housing by a tool extending through the lift swivel or from the opposite end.

REFERENCES:
patent: 4017115 (1977-04-01), Holt et al.
patent: 4431352 (1984-02-01), Andrews
patent: 4630982 (1986-12-01), Fenner
patent: 4705422 (1987-11-01), Tsui et al.
patent: 4863205 (1989-09-01), Schron et al.
patent: 5286130 (1994-02-01), Mueller
patent: 5743576 (1998-04-01), Schron, Jr. et al.

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