Bottle jack anti-bind structure for rectangular lift post

Details Bottle jack anti-bind structure for rectangular lift post Bottle jack anti-bind structure for rectangular lift post

1979-07-25

1981-04-21

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Fluid pressure

Vehicle attached

92167, 92168, B66F 324

Patent

active

042628814

ABSTRACT:
Anti-binding structure for jacks is provided which eliminates load-induced binding between an extended jack lift post and the guide structure therefor, so as to facilitate smooth jack operation. The jack of the invention preferably includes a rectangular or sqaure cross section lift post and a plurality of elongated, transversely U-shaped bearing channels respectively disposed between the planar post faces and the upper guide plate of the jack; the channels are each mounted for limited rocking movement about respective axes transverse to the longitudinal axis of the jack post so that any load-induced canting or deflection of the post can be safely accommodated without binding or galling thereof.

REFERENCES:
patent: 373072 (1887-11-01), Jarvis
patent: 3046062 (1962-07-01), Wettstein
patent: 3311030 (1967-03-01), Halstead
patent: 3730481 (1973-05-01), Ekonen et al.
patent: 3881692 (1975-05-01), Clarke

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