Tamper resistant fastening assembly and method of use

Details Tamper resistant fastening assembly and method of use Tamper resistant fastening assembly and method of use

1996-08-16

1997-07-29

Wilson, Neill R.

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

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

Cap over the head

411377, 411431, 411910, F16B 1900, F16B 3300, F16B 4300

Patent

active

056516517

ABSTRACT:
A two part fastening assembly 30 for use with a common fastener 500 such as a screw, bolt, or the like includes a substantially ring-shaped base member 32 having a washer-shaped element 38 attached to one end. Washer-shaped element 38 has a hole 42 sized to accept the shank 504 of common fastener 500. Base member 32 has a plurality of circumferentially spaced apertures 48. A substantially bowl-shaped cap 34 has a corresponding plurality of legs 60 having barbs 62. The shank 504 of common fastener 500 is inserted into base member 32 and into hole 42 until head 502 abuts washer-shaped element 38. Cap 34 is then inserted into base member 32, covering head 502, and barbs 62 snap into apertures 48 and are captively engaged thereby.

REFERENCES:
patent: 4136598 (1979-01-01), Hughes
patent: 4601624 (1986-07-01), Hill
patent: 4621230 (1986-11-01), Crouch et al.
patent: 5068956 (1991-12-01), Malewicz
patent: 5175665 (1992-12-01), Pegg

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