Rectilinear jack blocked by rollers in an indifferent position

Machine element or mechanism – Control lever and linkage systems – Elements

Patent

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188 67, 297375, G05G 516

Patent

active

047381566

ABSTRACT:
The rectilinear jack comprises a cage defining an inner chamber at an upper portion while a lower portion of the cage is thinned out in order to form an end lug with a hole for fixation of the cage. The upper portion of the cage is substantially of a lozenge shape for enclosing a cam with two noses placed substantially at 120.degree. with respect to each other. The cam displaces two substantially V-shaped parts bearing on inclined inner walls of the inner chamber while an open lower portion thereof contains trains of rollers kept in engagement with the above parts by a spring. The trains of rollers bear on an upper portion of a jack stem having at least one connection head.

REFERENCES:
patent: 3793903 (1974-02-01), Pellman
patent: 3893730 (1975-07-01), Homier et al.
patent: 4407166 (1983-10-01), Protze et al.
patent: 4583621 (1986-04-01), Tangorra
patent: 4592591 (1986-06-01), Wiers

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