Failure modes for a jack

Details Failure modes for a jack Failure modes for a jack

1992-09-14

1993-04-06

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Single throw lever

Mechanically actuated

B66F 312

Patent

active

051996880

ABSTRACT:
Scissors jacks which are provided with channels which bend during overload conditions so as to indicate to the user that the jack has been overloaded. One embodiment an accordion structure is used and in the other two embodiments metal straps are used.

REFERENCES:
patent: 4277048 (1981-07-01), Okuda
patent: 5064171 (1991-11-01), Engel
patent: 5110091 (1992-05-01), Engel et al.
patent: 5135201 (1992-08-01), Engel et al.

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