F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
85/4
F16B 41/00 (2006.01) F16B 19/05 (2006.01)
Patent
CA 1271064
ABSTRACT A fastening system including a two piece swage type fastener including a pin and a collar adapted to be swaged into lock grooves in the pin and in which the lock grooves are helical and with the collar having a limited female thread which is threadably engageable with the helical lock grooves for variably clamping work pieces to be secured prior to swage, with the collar thread being deformable in response to a relative axial load between the pin and collar at the initiation of the swage operation but prior to swag- ing and in which the lock grooves are shallow and have a and have a ratio of (h/Du)x102 of four (4) or less and in which the lock grooves have a simulated streamlined root contour, with the collar having a wall thickness defining a volume of material sufficient to provide overpacking of of the shallow grooves of around 16%, and with the pin and collar materials having ultimate shear strengths in a ratio of around 1.8:1 to 2.4:1 and with the width of the shallow grooves and intervening shoulders being generally in accor- dance with the shear strength ratio between the pin and collar.
507707
Huck International Inc.
Smart & Biggar
LandOfFree
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