Vault door opener

Details Vault door opener Vault door opener

1991-06-07

1993-01-05

Matecki, Katherine

Implements or apparatus for applying pushing or pulling force

Apparatus for hauling or hoisting load, including driven...

Device includes rotatably driven, cable contacting drum

242106, 248500, 254376, 254262, 254266, B66D 312

Patent

active

051763656

ABSTRACT:
A vault door opener for opening a vault door wherein the vault door is disposed near a grating. The vault door opener comprises a stand with a winch connected to one end of the stand. Means are connected to the opposite end of the stand for removably connecting the stand to the grating whereby the stand is supported in an upright position on the grating. In the supported position of the stand, a cable on the winch is connected to the vault door and the winch is rotatable to reel the cable in thereby lifting the vault door to the opened position.

REFERENCES:
patent: 2331060 (1943-10-01), Turner
patent: 3595497 (1971-07-01), Boatright
patent: 3671015 (1972-06-01), Sullivan
patent: 3751866 (1973-08-01), Renchen
patent: 3946990 (1976-03-01), Tanner
patent: 3964729 (1976-06-01), Harlow
patent: 3998402 (1976-12-01), Christensen et al.
patent: 4181290 (1980-01-01), Affolter
patent: 4275939 (1981-06-01), Odermann
patent: 4482182 (1984-11-01), Mortensen
patent: 4488706 (1984-12-01), Kono
patent: 4490088 (1984-12-01), Castle
patent: 4512554 (1985-04-01), Racine
patent: 4695037 (1987-09-01), Hadbavny
patent: 4706939 (1987-11-01), Gagne
patent: 4826388 (1989-05-01), Golding

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