Stud hardware with self-contained stud anti-rotation feature and

Details Stud hardware with self-contained stud anti-rotation feature and Stud hardware with self-contained stud anti-rotation feature and

1984-03-14

1986-03-04

Tudor, Harold J.

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

Threaded fastener locked to a discreet structure

Fastener, or coaxial adjunct therefor, having sidewardly...

29526R, F42B 3910

Patent

active

H00000329

ABSTRACT:
Disclosed herein is a method and apparatus for preventing the rotation of a stud member during preloading. The apparatus comprises a stud member having a shaft portion extending into the member to be clamped and a hex or double hex portion carrying a locking nut. Extending outward from the hex or double hex portion of the stud there is a threaded portion carrying a nut which is torqued to preload the stud. Between the locking nut and the member to be clamped is a locking ring which engages the locking nut to prevent the stud from rotating during preloading.
Also disclosed is a method of preloading a stud without the use of an external restraint to prevent the stud from rotating when a torque is applied.

REFERENCES:
patent: 124644 (1872-03-01), Cleve
patent: 292513 (1884-01-01), Shailer
patent: 514315 (1894-02-01), Frenot
patent: 525431 (1894-09-01), Sparks
patent: 618436 (1899-01-01), Parker
patent: 1088515 (1914-02-01), Bazin
patent: 2295466 (1942-09-01), Hafele
patent: 2537527 (1951-01-01), Heckert
patent: 2561224 (1951-07-01), Pischek et al.
patent: 3386771 (1968-04-01), Verdier et al.
British Patent Publ. "Class 89(i), Bolts & C", Dec. 18, 1926.

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