F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
85/139
F16B 19/05 (2006.01)
Patent
CA 1168909
ABSTRACT OF THE DISCLOSURE A two-piece rivet assembly comprising a shank member and a collar. The shank member includes a head, a cylindrical shank, and a helical thread with a substantially constant pitch, but with a crest diameter which decreases as it extends away from a maximum adjacent to its end farthest from the shank. The ring-like collar has an inner wall, an outer wall, and a first and a sec- ond end. The inner wall defines a passage between the ends to receive at least a portion of the thread. With the shank placed in an aperture in a workpiece with at least a portion of the thread projecting beyond a surface of the work- piece, the collar is placed over the thread and a swaging setting force is applied. This force applies both axial and radial components to the collar. This forces the collar against a surface of the workpiece and swages the wall into the thread at its maximum diameter and then continuously along the thread, exerting a tensile force on the shank member.
361606
Hi-Shear Corporation
Smart & Biggar
LandOfFree
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