US 5,699,687 A · Firearm security device

Abstract

A firearm-securing device providing tamper resistance features which device includes a keyway that operates a threaded rod which, in turn, controls spring-loaded cams that obstruct a tubular area including a chamber, a barrel, and a muzzle of a firearm. The cams have either fixed or articulated contact pads. Operating the keyway in clockwise rotation causes the cams to wedge against the inner chamber and barrel surfaces, locking the device in place. Counterclockwise keyway rotation unseats the cams, allowing the device to be remove from the chamber and barrel and thus allow operation of the firearm. The device includes several components designed to minimize tampering of the device itself as well as tampering of the firearm.

Claims28

Dependent claims

A locking device for controlling access to a length of a tubular element having an inner surface, said locking device comprising:

a shaft having one or more conical sections,
one or more sets of cams engageable with said one or more conical sections of said shaft, wherein at least one cam of each of said one or more sets of cams has a contact pad pivotably mounted thereon and substantially conforming with a shape of said inner surface of said tubular element,
a lock mechanism,
and a control means for use within said lock mechanism to control movement of said shaft.

1 more element

A locking device for controlling access to a length of a tubular element, said locking device comprising:

a shaft,
a plurality of cams arranged in at least two sets and enagageable by said shaft, each of said cams including a contact pad made of a material of a hardness not more than a hardness of any tubular element surface upon which said contact pads rest during operation of said locking device,
a substantially cylindrical means for housing said cams, wherein said cylindrical means is superimposed upon said shaft,
said cams, upon engagement by said shaft, are displaced from a fixed position within said cylindrical means,
wherein each of said set of cams includes at least two cams, wherein cams within anyone of said sets are placed in diametric opposition to one another,
a lock mechanism including a double sided pin tumbler lock,
a control means for use within said lock mechanism to control shaft movement,
a pyric disk located within said lock mechanism, wherein said pyric disk is made of a material which has a melting point lower than substantially all other parts of said locking device, and
a bi-directional slip gear couplable to said shaft, wherein said bi-directional slip gear is designed to protect internal components and associated surfaces of said device within said tubular element when said device is activated or deactivated.

6 more elements

Dependencies are inferred from the claim text.

Firearm security device

Life of this patent

Firearm security device

Life of this patent

Abstract

Claims28