Locking thread

Details Locking thread Locking thread

1975-06-12

1977-03-22

Britts, Ramon S.

Brushing, scrubbing, and general cleaning

151 21R, 151 22, F16B 3922

Patent

active

040131106

ABSTRACT:
Threads for a fastener of a type having an opening in one member with internal helically-shaped threads around the inner periphery thereof, and another member having helical threads around the outer periphery of a cylindrical portion thereof, wherein the cylindrical portion is adapted to be placed in the opening by relative rotation of the two threaded members. The internal threads of the opening and the external threads of the cylindrical portion being substantially identical except that the helix or lead angle of one of the thread formations is 39 to 85 percent of the helix angle of the other thread formation to thereby cause a higher prevailing torque for the purpose of impeding relative movement of the threaded members when the threads are engaged. This invention is particularly useful for the construction of what is commonly referred to as lock nuts.

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patent: 900796 (1908-10-01), Tambling
patent: 1476455 (1923-12-01), Marye
patent: 1812785 (1931-06-01), Helin
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patent: 3060787 (1962-10-01), Kraus et al.
patent: 3312264 (1967-04-01), Dresdner
patent: 3356121 (1967-12-01), Tabor
patent: 3438417 (1969-04-01), Albris
patent: 3439722 (1969-04-01), Brandon
patent: 3460598 (1969-08-01), Thurston
patent: 3687181 (1972-08-01), Coyle

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