Self-locking fastener with captive washer

Details Self-locking fastener with captive washer Self-locking fastener with captive washer

F - Mech Eng,Light,Heat,Weapons

16

B

F16B 39/24 (2006.01) F16B 39/282 (2006.01)

Patent

CA 2207205

This invention relates to a wedge-locking fastener assembly in which a washer is connected to flanged nut by a series of tabs that extend around the outer edge of the flange on a nut. In one embodiment, a cup-shaped washer has an integral annular cylindrical skirt that extends around the outer edge of the flange. Tabs extend radially inwardly from the periphery of the skirt around the flange of the nut. The arrangement is such that the washer can move axially as well as rotatably with respect to the nut to permit the wedge-locking cams to wedge the nut between the cams on the washer and the threads on the bolt. When the nut is turned in a tightening direction, it tightens the washer on the workpiece. When the nut tends to rotate in the loosening direction, such as in response to vibration, the washer remains fixed, but the nut becomes tighter.

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