Process and apparatus for the release of a prestress...

Details Process and apparatus for the release of a prestress... Process and apparatus for the release of a prestress...

F - Mech Eng,Light,Heat,Weapons

16

C

308/8

F16C 23/00 (2006.01)

Patent

CA 2020909

DESCRIPTIVE ABSTRACT In space vehicles, mechanisms such as ball bearings (14, 14') are subject to an initial preload or prestress enabling them to with- stand the vibrations caused by the launch and without leading to any clearance or play. A member (34) made from a shape memory material e.g. makes it possible under the effect of its elongation, to release said preload when the vehicle is in the operational mode. The con- trol of the release can take place by means of a heating resistor (36), whose energization leads to the member (34) clearing its shape change temperature. (Fig. 1) SP 5675.69 GP

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