Tamper resistant fastener

Details Tamper resistant fastener Tamper resistant fastener

1976-08-26

1977-07-26

Britts, Ramon S.

F16B 3102

Patent

active

040375153

ABSTRACT:
A tamper resistant fastener having a stud engaging portion and a slip ring surrounding the stud engaging portion and slidably connected thereto to freely rotate thereabout. The slip ring prevents a gripping instrument from applying enough force to the stud engaging portion to allow that portion to be separated from the stud. A gripping means engaging portion is connected to the stud engaging portion by a frangible neck which breaks upon the application of a predetermined amount of torque to separate the gripping means engaging portion from the stud engaging portion. One embodiment of the invention comprises a bolt-like device.

REFERENCES:
patent: 641191 (1900-01-01), Champion
patent: 1447564 (1923-03-01), Norlund et al.
patent: 1696523 (1928-12-01), Cochran
patent: 2054060 (1936-09-01), Morris
patent: 3261254 (1966-07-01), Pinkerton
patent: 3492841 (1970-02-01), Ipri
patent: 3865246 (1975-02-01), Lieb et al.
patent: 3978761 (1976-09-01), Sosinski

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