F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
85/73
F16B 39/22 (2006.01) B21H 3/02 (2006.01) F16B 39/30 (2006.01)
Patent
CA 1165602
SELF-LOCKING THREADED FASTENER ABSTRACT A self-locking fastener combination is pro vided with a thread construction having a thread which deforms to securely lock when a set of male and female members are threaded together and which is reformed upon unthreading of the members to allow subsequent reuse thereof. The female member is provided with a conventional thread while the male member has a special helical thread defined by leading and trailing flanks in which a portion of the leading flank diverges away from the leading flank of the fe- male member to produce a space between the threads at the male thread root. A portion of the male thread root is truncated and is of lesser depth than the female thread such that part of the female thread crest firmly engages and is deformed by the trun- cated male thread root into the space adjacent such root when the members are threaded together. The deformed female thread crest produces firm metal- to-metal contact between the members completely around several revolutions of the circumference of the threads in order to preclude lateral movement of one member relative to the other and resultant loosening of the fastener when subjected to vibration.
367922
Holmes Horace D.
Smart & Biggar
LandOfFree
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