Security Device

Details Security Device Security Device

1983-01-13

1985-09-10

Smith, Gary L.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Headed fastener element with nut, washer, securing means or cap

Lap bolt or fastener

411 4, 411427, 411378, 411389, 411910, F16B 4100

Patent

active

045403228

ABSTRACT:
The security device consists of a bolt portion and/or a bolt fastener portion which utilize nuts which do not threadedly engage any other part, but give the impression that they do so and that they are the fastening means. These nuts turn freely as if stripped if an unauthorized person attempts to remove them.

REFERENCES:
patent: 1039576 (1912-09-01), Mueller
patent: 1103591 (1914-07-01), Kneass
patent: 1516453 (1924-11-01), Nichols
patent: 2218126 (1940-10-01), Thacher
patent: 3191486 (1965-06-01), Gibbens
patent: 3261254 (1966-07-01), Pinkerton
patent: 3267792 (1966-08-01), Yackle
patent: 4037515 (1977-07-01), Kesselman
patent: 4170918 (1979-10-01), Burge
patent: 4171662 (1979-10-01), Simone et al.
patent: 4302137 (1981-11-01), Hart

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