Stud retaining fastener and method for producing same

F - Mech Eng,Light,Heat,Weapons – 16 – B

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F16B 17/00 (2006.01) A43C 15/16 (2006.01) F16B 21/20 (2006.01)

Patent

CA 1134652

A B S T R A C T An improved, thin walled fastener for retaining studs, rods, or the like is provided. The fastener is of the push-on type comprising a one-piece, generally thin, stamped sheet metal resilient body defining a generally centrally located stud retaining aperture for receipt and retention of studs, rods or the like. The body is preferably generally frusto-conical or dome shaped in cross section. The fastener is formed by punching or shearing a hole in a blank and then forming a generally dome shaped impression in the blank, the impression being generally coaxial with the axis of the punched hole. The required trans- verse extensions of the body are minimized by the utilization of the relatively smooth continuous edge of the punched hole rather than the burred edge of a punched hole as the stud retaining edge of the fastener stud retaining aperture.

300358

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