Jack safety stop

Details Jack safety stop Jack safety stop

1976-04-05

1977-04-05

Smith, Al Lawrence

Implements or apparatus for applying pushing or pulling force

Multiple lifters

74 8915, 744248R, 254 98, 254103, B66F 318

Patent

active

040158241

ABSTRACT:
A gear axially drives a jack support element and is adapted to reciprocally move the same along a movement axis. A stop disposed adjacent an end limit of the element movement is adapted to collapse upon exertion of a predetermined force thereagainst whereby damage to the driving gear and driven support element is avoided.

REFERENCES:
patent: 2655223 (1953-10-01), Villars
patent: 3221118 (1965-11-01), Hoover
patent: 3707885 (1973-01-01), Profet

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