Safety lock device for screw fasteners

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Elongate member extending between and interlocking plural...

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Details

411373, 411429, 411430, 411431, F16B 3900, F16B 3908, F16B 3714

Patent

active

056242182

ABSTRACT:
A safety lock device when combined with at least one pair of spaced screw fasteners, which by observation indicates tightness of the fasteners or looseness of either or both fastener, and additionally to limit counter rotation of either fastener to a small faction of a turn, characterized by a pair of replaceable caps anchored to each fastener, and a loose lanyard extending between the caps when the fasteners are in tightened condition, also any multiplicity of caps tethered by lanyards.

REFERENCES:
patent: 1195165 (1916-08-01), Baker
patent: 1379607 (1921-05-01), Ashley
patent: 2551834 (1951-05-01), Ferguson
patent: 3135558 (1964-06-01), Johnston, Jr. et al.
patent: 3548704 (1970-12-01), Kutryk
patent: 4018133 (1977-04-01), Chaivre et al.
patent: 4907929 (1990-03-01), Johnston, Jr.
patent: 5067750 (1991-11-01), Minneman
patent: 5116178 (1992-05-01), Lerman et al.
patent: 5350266 (1994-09-01), Espey et al.
patent: 5468103 (1995-11-01), Leeson

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