Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Design of fastener or substructure restricts rotation
Patent
1985-02-05
1987-03-17
Holko, Thomas J.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Threaded fastener locked to a discreet structure
Design of fastener or substructure restricts rotation
411368, 411424, 411427, 411531, 403 29, F16B 3504, F16B 4300
Patent
active
046503854
ABSTRACT:
A daze fastener system for connecting two or more structural elements wherein the structural elements and fastener parts have substantially different coefficient of thermal expansion physical property characteristics is employed in this invention. By providing frusto-conical abutting surfaces between the structural elements and fastener parts any differences in thermal expansion/contraction between the parts is translated to sliding motion and avoids deleterious thermal stresses in the connection. An essential feature for isotropic homogeneous material connections is that at least two sets of mating surfaces are required wherein each set of mating surfaces have line element extensions that pass through a common point.
REFERENCES:
patent: 741747 (1903-10-01), Walz
patent: 860829 (1907-07-01), Schmidt
patent: 1215530 (1917-02-01), Hightower
patent: 1382299 (1921-06-01), Purple
patent: 2359031 (1944-09-01), Goshia
patent: 2439346 (1948-04-01), Nash
patent: 3145362 (1964-08-01), Kleven
Davis Randall C.
Jackson L. Robert
Taylor Allan H.
Helfrich George F.
Holko Thomas J.
Manning John R.
Marchant Robert D.
The United States of America as represented by the Administrator
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