F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
85/144
F16B 31/00 (2006.01)
Patent
CA 1058922
ABSTRACT OF THE DISCLOSURE A fastener assembly for connecting together work pieces with aligned holes therethrough of an initial diameter comprising a fastener defining a forwardly facing driving face on the leading end thereof; a separate expansion member removably and operatively associated with the fastener and defining an outside expansion surface thereon that enlarges out- wardly from a minor expansion diameter at the leading end of the expansion surface to a major expansion diameter larger than the hole diameter, the ex- pansion member defining a rearwardly facing driven face thereon to be engaged by the driving face on the fastener to force the expansion member into the holes; and alignment means for maintaining the fastener and expansion member coaxial as the fastener and expansion member are forced through the holes with the expansion member leading the fastener to expand the holes.
254522
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