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US 4,540,322 AGranted
Security Device
AssigneeGrace Petroleum Corporation
InventorBob J. Coffia
Life of this patent
Estimating the term…
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.
Claims36
A security device comprising:
- (a) a stem portion having threads at one end and a flange adjacent the other end;
- (b) a stem receiving portion having a cavity in one end and a flange adjacent the other end, said cavity having threads adapted to receive and engage the threads of said stem portion;
- (c) the flange on said stem portion and on said receptacle portion each having a channel at least partially therethrough;
- (d) a false nut having a cylindrical inner surface and a multi-sided outer surface to resemble a conventional nut, one end of said cylindrical surface having a decreased diameter adapted to contact the flange of said stem portion and thereby be held onto said stem portion;
- (e) a false nut having a cylindrical inner surface and a multi-sided outer surface to resemble a conventional nut, one end adapted to contact the flange of said receiving portion and thereby be held onto said receiving portion;
- (f) an opening in at least one multi-sided outer surface of each false nut, each opening capable of being aligned with the channel in each flange;
- and
- (g) pin means capable of entering said channel in said flange and the opening in the outer multi-sided surface of said false nut.
5 more elements
A security device comprising:
- (a) a stem portion having threads on one end and a flange adjacent the other end, said flange having a channel at least partially therethrough;
- (b) a false nut having a cylindrical inner surface and a multi-sided outer surface to resemble a conventional nut, one end of said cylindrical inner surface having a decreased diameter region which is less than the outer diameter of the flange of said stem portion said decreased diameter region of said false nut contacting said flange whereby said false nut is thereby maintained on said stem portion but can rotate around said stem portion;
- (c) an opening in at least one side of said multi-sided outer surface, said opening capable of being aligned with the channel in said flange;
- and
- (d) pin means capable of entering said channel in said flange and said opening in said outer multi-sided surface.
2 more elements
A security device comprising:
- (a) a cylinder having a cavity in one end and a flange on the other end, said cavity having threads adapted to receive the threads of a bolt;
- (b) a false nut having a cylindrical inner surface and a multi-sided outer surface to resemble a conventional nut, one end of said cylindrical surface having a decreased diameter adapted to contact the flange on said cylinder;
- (c) an opening in at least one side of said multi-sided outer surface, said opening capable of being aligned with a channel in said flange;
- and
- (d) pin means capable of entering said channel in said flange and said opening in said outer multi-sided surface.
2 more elements
Dependencies are inferred from the claim text.