Self-retaining bolt

Details Self-retaining bolt Self-retaining bolt

1998-08-31

1999-09-07

Wilson, Neill

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Having structure to restrict rotation of threaded, mating...

Comprising a thread lock

411418, 411947, F16B 3504, F16B 3934

Patent

active

059476680

ABSTRACT:
A self retaining fastener which comprises a threaded bolt with an hexagonal head and threaded shaft with a longitudinal groove formed therein. An arcuate spring member is secured in the groove and protrudes slightly outward from the threaded shaft of the bolt to provide frictional force against the inner surface of a bore. A further embodiment of the invention provides a threaded shaft cut into segments by one or more diametrical slots. The segmented portion of the shaft is biased outward to a diameter slightly greater than that of the unsegmented portion, providing resilient frictional force when inserted into an appropriately sized bore.

REFERENCES:
patent: 546173 (1895-09-01), Martin, Jr.
patent: 570658 (1896-11-01), Bestgen
patent: 1158454 (1915-11-01), DeCamp
patent: 1638165 (1927-08-01), Rau
patent: 2877818 (1959-03-01), Johnson
patent: 3149654 (1964-09-01), Podell
patent: 3203041 (1965-08-01), Beuter et al.
patent: 3552257 (1971-01-01), Tanabe
patent: 3561516 (1971-02-01), Reddy
patent: 3894467 (1975-07-01), Brescia
patent: 4759671 (1988-07-01), Duran
patent: 5407312 (1995-04-01), Terrizzi

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