Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having structure to restrict rotation of threaded – mating... – Structure is coaxial – distinct member that restricts nut piece
Patent
1994-04-12
1995-08-08
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having structure to restrict rotation of threaded, mating...
Structure is coaxial, distinct member that restricts nut piece
411226, 411931, F16B 3904, F16B 3912
Patent
active
054393370
ABSTRACT:
In order to provide a lock nut having a high reliability free from loosening, three nuts are used. The nut closest to the bolt head and the intermediate nut are engaged with each other in only the peripheral direction and do not come into surface-contact with each other in the axial direction, thereby aligning the outer peripheries thereof and forming internal threads on a variety of center bores. Then, the intermediate nut and the outermost nut are brought into press-contact with each other in the axial direction.
REFERENCES:
patent: 910712 (1909-01-01), McCoy
patent: 1005678 (1911-10-01), Wolfe
patent: 1047064 (1912-12-01), Ivers
patent: 1967237 (1934-07-01), Freeland
patent: 3664226 (1972-05-01), Gonzalez
patent: 3867972 (1975-02-01), Gonzalez
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