Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Headed fastener element with securing means and biasing spring
Patent
1985-09-11
1988-07-05
Gall, Lloyd A.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Headed fastener element with nut, washer, securing means or cap
Headed fastener element with securing means and biasing spring
403146, 4034081, 411436, 411918, F16B 2100
Patent
active
047550929
ABSTRACT:
A quick-action fastener for connecting two plates (III) and (IV) with a resilient gasket (V) interposed therebetween, all three being perforated by a throughgoing hole, comprises a bolt (I) passing through this hole and engaging with a bore (24) in a socket (II) which is rigidly fastened to the plate (III). A helical groove (14) is cut into the end of the bolt, which has a lead angle not exceeding 15.degree., and which engages with a protrusion (42) inwardly projecting from the bore (24) of the socket. Friction between the protrusion (42) and the wall of the helical groove (14) is strong enough to hold the bolt in position and to clamp the two plates together, owing to the tension of the resilient gasket.
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Gall Lloyd A.
Galram Technology Industries Limited
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