Patent ID: 6935214
Filing Date: 2005-08-30
Classification: B25B,F16B

Abstract:
1. A noback bolt of unitary structural design comprising: a. an enlarged truncated conical head having an apex and a concave underside; b. an elongated shaft carrying external threads on at least a portion thereof extending from the concave underside of said head; c. a tapered tip opposite of said head and at the end of said shaft; d. a common central axis longitudinally extending from said head to said tip; and e. a receiving and engaging means embedded within said head for conformably accepting a driving tool having a compatible annular profile for said bolt head with a drive means positioned therein for inserting and advancing said bolt into a workpiece when a driving force is essentially applied to the bolt head along said common central axis, said receiving and engaging means comprising at least one arcuate slot embedded within the surface of said head, said slot being off-center from the common central axis of said shaft, and off-center from said apex and said concave underside of said conical head, said slot beginning at the conical surface and progressively increasing in depth along an arcuate, rounded bottom for about 180 degrees and ending in a stop adapted to be engaged by said driving tool, said slot being capable of conformably receiving and engaging said driving means of the driving tool when said tool is turned.