Screw fastener assembly

Details Screw fastener assembly Screw fastener assembly

2007-10-30

2007-10-30

Thomas, David B (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

C081S013000

Reexamination Certificate

active

11487645

ABSTRACT:
A screw fastener assembly includes a resilient sleeve sleeved on a head portion of the screw fastener in a close-fitting manner such that a free end of a shank portion of the screw fastener extends outwardly of a first end of the sleeve. The sleeve permits extension of a bit of a screw driver thereinto via a second end thereof, and is sleeved on the screw driver in a close-fitting manner. An engaging groove in the head portion of the screw fastener engages the bit of the screw driver such that the screw driver is capable of moving and rotating an assembly of the screw fastener and the sleeve until the first end of the sleeve comes into contact with a surface of an object so as to allow movement of the screw fastener relative to the sleeve and a threaded hole in the object.

REFERENCES:
patent: 1360500 (1920-11-01), Coll
patent: 2723694 (1955-11-01), Ross
patent: 4221249 (1980-09-01), Mazzeo et al.
patent: 5065649 (1991-11-01), Evers et al.
patent: 6116125 (2000-09-01), McLeod

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