Theft prevention assembly for use with car wheels
AssigneeMonarch Machine Company, Inc.
InventorClark E. Creed
Life of this patent
Estimating the term…
Abstract
A theft prevention assembly for use with car wheels and the like includes a threaded sleeve adapted to be threaded onto a wheel mounting stud in place of the usual lug nut, the sleeve having an enlarged head portion at its outer end which is loosely encircled by a ring. The ring and enlarged head portion having opposed surfaces preventing the ring from moving outwardly of the head portion. A special wrenching tool has clamping members between which the ring and outer end of the sleeve may be clamped to produce sufficient frictional force to cause the assembly to rotate as a unit when the wrench is turned.
Claims4
The combination of a theft prevention device adapted to be mounted on a wheel mounting stud and a special tool required for its attachment and removal wherein:
- A. the theft prevention device comprises:
- a. an internally threaded sleeve having a radially expanded end portion, which is flared outwardly to form inner and outer frustoconical surfaces,
- b. a ring loosely encircling said end portion and having a rear shoulder for engagement by the tool and an inner frustoconical surface complementary to and engageable with the outer frustoconical surface of the sleeve, and
- B. the tool comprises:
- a. an elongated tool body having relatively movable clamping members at one end for engagement behind the ring and with the end portion of the sleeve, and
- b. means for moving said clamping members together to produce sufficient frictional force to enable the sleeve, ring, and tool to be rotated as a unit.
A theft prevention device comprising a sleeve having a threaded stem and an expanded end portion which is flared providing an inner and an outer frustoconical surface, and a ring having a portion loosely encircling the expanded end portion and a shank loosely encircling the adjacent portion of the threaded stem, said ring having a radial shoulder facing toward the stem and an inner frustoconical surface complementary to the outer frustoconical surface of the sleeve engageable with the expanded end portion of the sleeve.
Dependencies are inferred from the claim text.