Washer for fastener and for fastening of objects

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Headed bolt or screw with threads and complementary nut

Reexamination Certificate

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Details

C411S533000, C411S222000

Reexamination Certificate

active

06929439

ABSTRACT:
A washer to be applied between a nut threadingly connected with a bolt which has an axis and is introduced into an object including two parts to be assembled, the washer has a body having an axis and provided with a first bearing face surface located at one axial side and adapted to cooperate with a nut, a second bearing face surface located at an opposite axial side and adapted to cooperate with the object, and at least one third turning resistant surface adapted to cooperate with a thread of the bolt, so that when the nut is turned with a given torque in one direction and the body of the washer receives simultaneously the given force in an opposite direction, only the nut turns to tighten or loosen the bolt and the body of the washer remains rotation stationary while the bolt elongates or relaxes in an axial direction.

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patent: 2001/0039858 (2001-11-01), Junkers
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patent: 350990 (1999-01-01), None

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