Title: Anti-rotation lock for threaded connection

Abstract: For adjustable length linear rods, such as the rods of linear actuators, employing threadedly connected internally threaded female and externally threaded male members, an antirotation lock is provided which includes a pair of semi-circular keys each including a projection fitting in a notch on the end face of the female member and an internal flat cooperating with an external flat on the male member. Each key includes a conical surface cooperating with a conical surface of a ring driven toward the female member by a nut threaded on the male member, thus axially to force the projections into the notches, and radially to force the flats of the keys against the flats of the male member.

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Inventors: Bradley, Jr., Charles Duane (Gobles, MI, US)

Application Number: 692450
Filing Date: 1976-06-03
Publication_date: 1978-05-30
Assignee: Pneumo Corporation (Boston, MA)
Primary Class(es): 403/319 403/356, 411/198, 411/924, 411/935
Other Classes:
US Patent Ref:

1005227	Oct, 1911	Jones	151/19.
1201651	Oct, 1916	Thompson	151/19.
2821419	Jan, 1958	Walton	151/8.
3122028	Feb, 1964	Hanke	403/356.

Other Refs: 179,432474,713

Apr, 1916	CA
Jun, 1951	CA

Primary Examiner: Parsons, Jr., Marion
Assistant Examiner:
Attorney: Maky, Renner, Otto & Boisselle