Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Headed bolt or screw with threads and complementary nut
Patent
1993-09-21
1995-05-09
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Headed fastener element with nut, washer, securing means or cap
Headed bolt or screw with threads and complementary nut
411287, 411386, 411424, 411903, 238262, F16B 2500, F16B 3500, F16B 3504, E01B 1100
Patent
active
054134420
ABSTRACT:
An improved railroad frog bolt-nut assembly is disclosed. The bolt has a square head and a shank. The shank has an unthreaded portion adjacent the head and a threaded portion at its terminal end. The threaded portion is rolled to a diameter equal to the shank's unthreaded portion to produce high fastener strength. A unitary lock nut is formed with an annular boss extending from it's outside end in which indentations intersecting with some of the nut threads are pressed to provide an interference, locking fit with the bolt threads.
REFERENCES:
patent: 168483 (1875-10-01), Hamilton
patent: 1105697 (1914-08-01), Reynolds
patent: 2985898 (1961-05-01), Goude
patent: 3208494 (1965-09-01), Skidmore
patent: 3812757 (1974-05-01), Reiland
patent: 4360154 (1982-11-01), Collins
patent: 4735537 (1988-04-01), Rath
patent: 4837090 (1989-06-01), Hyner et al.
"Maintenance of Way Fasteners Solutions", pp. III-5 to III-6, III-9, VI-7 to VI-10, Camcar Textron.
Barnes Group Inc.
Wilson Neill R.
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