Friction-free bistable device for use in space application, in p

Optical: systems and elements – Optical aperture or tube – or transparent closure

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359227, 3542711, G03B 908

Patent

active

052588742

ABSTRACT:
Device for the assembly and movement control of a mobile element that moves with respect to a support between two extreme positions, characterized in that it includes an arm pivotable around a rotation axis which supports the mobile element; an elastic torsion rod aligned along the axis, secured respectively to the arm and to the support at axially offset points; two mechanical stops mounted on the support which determine two extreme angular configurations of the arm in which the element is in its extreme positions, the elastic torsion rod tending to bring the arm into a predetermined one of these configurations; two pairs of complementary magnetic latching elements mounted, respectively, on the support and on the arm, the complementary units of either pair being adapted to be opposite when the arm is in one or the other of the extreme configurations; and launching members mounted on the support designed to give a launching impetus to the arm from each to the other of the extreme configurations.

REFERENCES:
patent: 3635141 (1972-01-01), Starp et al.
patent: 3826557 (1974-07-01), Lobb et al.
patent: 4088405 (1978-05-01), Pustka et al.
patent: 4171897 (1979-10-01), Fujita et al.
patent: 4514064 (1985-04-01), Kurosu et al.

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