Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Nut – and means to engage substructure on its opposite faces...
Patent
1980-09-15
1982-09-21
Friedman, Carl D.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Threaded fastener locked to a discreet structure
Nut, and means to engage substructure on its opposite faces...
411389, 411453, 52698, 52738, 10 1B, E04B 138
Patent
active
043504647
ABSTRACT:
An anchor bolt (10) for use in concrete or masonry is described. The bolt is formed of an integral shaft (13) having an elongate round holding portion (12) defining a cylindrical surface with at least one helical or spiral patterned weld line (14) along the surface. The bolt is positioned in the concrete by being forced into a hole (101) having the same diameter as the shaft such that it rotates or turns as it is being forced into the hole due to the helical patterned weld line. The anchor bolt resists pulling from the concrete and is particularly adapted for use in holding machinery on concrete floors and in construction purposes in concrete flooring.
REFERENCES:
patent: 1485202 (1924-02-01), Rosenberg
patent: 1891895 (1932-12-01), Nagel
patent: 1989018 (1934-01-01), Norwood
patent: 2006813 (1934-06-01), Norwood
patent: 3092162 (1963-06-01), Johnsen
patent: 3897713 (1975-08-01), Gugle
patent: 3967525 (1976-07-01), Lerich
patent: 3986429 (1976-10-01), Busler
patent: 4046181 (1977-09-01), Barnsdale
patent: 4205587 (1980-06-01), Van der Lugt
Friedman Carl D.
McLeod Ian C.
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