Rack and pinion jack

Details Rack and pinion jack Rack and pinion jack

1991-10-31

1992-12-15

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Vehicle-body lifters

254 95, B66F 726

Patent

active

051709945

ABSTRACT:
In order to be able to handle containers of a height greater than the structural height of a rack and pinion jack in its retracted state, the top crosspiece of the rack and pinion jack is provided to be bent and provided with a double-acting engagement part. Thus, the top crosspiece can be brought into its top position with its engagement part engaging with the top corner metal fittings of a container of which the height exceeds that of the rack and pinion jack in a retracted state. By a simple 180.degree. rotation of the top crosspiece, its engagement part can be brought into engagement with the top corner metal fittings of another container, having a different structural height. In this manner, the rack and pinion jacks can be adapted to any height setting of the top crosspiece by 180.degree. rotation of the same to any two containers of different structural height. Thus the rack and pinion jacks are suitable even for containers of which the height lies below the level of the top articulation point of the bottom crosspiece of the rack and pinion jack.

REFERENCES:
patent: 3749363 (1973-07-01), Hauser
patent: 4045000 (1977-08-01), Mai
patent: 4619439 (1986-10-01), Riedl et al.
patent: 4765594 (1988-08-01), Riedl et al.
patent: 4811930 (1989-03-01), Riedl

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