Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc. – Thread or shank structure
Patent
1994-06-10
1996-07-16
Saether, Flemming
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Externally threaded fastener element, e.g., bolt, screw, etc.
Thread or shank structure
411 15, 411530, 411909, B23P 1102, F16B 2100
Patent
active
055361269
ABSTRACT:
A locking assembly is formed of a first article (40), a second article (44), and a locking fastener (46) positioned between the two articles and made of a shape memory alloy material. The locking fastener (46) is dimensioned to have a first shape below the transformation temperature wherein the first article (40) and the second article (44) are not locked together, and a second shape above the transformation temperature wherein the first article (40) and the second article (44) are locked together by the locking fastener (46). In one form, the first article (40) has a cylindrical bore (42) therein, the second article (44) is a cylinder that fits within the bore (42), and the locking fastener (46) is a helical coil or an annular ring having a radial slot therethrough, placed between the cylinder and the wall of the bore.
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Denson-Low W. K.
Gudmestad Terje
Hughes Aircraft Company
Saether Flemming
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