Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having structure to restrict rotation of threaded – mating... – Comprising a thread lock
Patent
1979-05-16
1981-02-24
Britts, Ramon S.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having structure to restrict rotation of threaded, mating...
Comprising a thread lock
F16B 3930
Patent
active
042521688
ABSTRACT:
An improved lock thread convolution has a resiliently deflectable spring rib or projection which presses a load bearing or pressure flank of the lock thread convolution against the flank of a mating thread. The pressure between the two flanks retards rotation between the lock thread convolution and the mating thread. In addition, the flank pressure retards axial movement between the threads upon application of vibrating or oscillating loads to the threads. The resiliently deflectable spring rib or projection has a base which is integrally formed with the crest of the lock thread convolution and an arcuately curving body which extends away from the crest along the nonpressure or unloaded flank of the lock thread convolution. The spring projection is deflected by engagement of a side surface area of the projection with the flank of the mating thread to provide a resilient spring force urging the pressure or load flank on the opposite side of the lock thread convolution into abutting engagement with a flank surface of the mating thread convolution.
REFERENCES:
patent: Re27678 (1973-06-01), Orlomoski
patent: 1250748 (1917-12-01), Woodward
patent: 2177004 (1939-10-01), Purtell
patent: 2301181 (1942-11-01), Ilsemann
patent: 3076208 (1963-02-01), Moore
patent: 3882917 (1975-05-01), Orlomoski
patent: 4024899 (1977-05-01), Stewart
Britts Ramon S.
The Lamson & Sessions Co.
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