Self-aligning bolt

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc. – Pilot end having means enhancing fastening or installation

Patent

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Details

411412, 411426, F16B 2500, F16B 3504

Patent

active

061202274

ABSTRACT:
Disclosed is a bolt which has been contemplated to solve problems of prior bolts and to provide the bolt adapted to corrects its own position in a precise direction to permit normal fastening without failure such as slipping, seizure or the like even when the bolt is inserted slantingly into a mating female screw. The bolt comprises a constant diameter columnar portion having a smaller diameter than that of a bolt shank portion and formed on an end portion of the bolt shank portion, formed with normal screw threads, in a direction of insertion with a short tapered portion therebetween, and complete screw threads formed on the constant diameter columnar portion to be equal in pitch and thread groove depth to the normal screw threads on the bolt shank portion.

REFERENCES:
patent: 5863167 (1999-01-01), Kaneko
patent: 5882162 (1999-03-01), Kaneko

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