Controllably deformable fastener assembly

Details Controllably deformable fastener assembly Controllably deformable fastener assembly

F - Mech Eng,Light,Heat,Weapons

16

B

85/4

F16B 31/02 (2006.01)

Patent

CA 1057091

A CONTROLLABLY DEFORMABLE FASTENER ASSEMBLY A B S T R A C T A controllably deformable fastener assembly has a fastener, clamping means, and a crushable element. The fastener has a threaded shank portion, a head portion and a shoulder portion on the head portion. The shank portion is of a material having a preselected tensile yield load. The clamping means is provided for screw threadably receiving the shank portion of the fastener, including a shoulder portion that is movable towards the shoulder portion of the fastener for securing a first member to a second member. The crushable element is disposed therebetween and is of a material that is elastically deformed in response to tightening of the fastener and is controllably plastically deformed in response to a force tending to separate the members at a preselected load which is less than the preselected tensile yield load of the shank portion of the fastener.

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