Title: Propeller nut

Abstract: A self-locking propeller nut, suitable for marine drive trains which involve a great deal of vibration, is disclosed. The nut, which has a nose-cone shaped exterior similar to conventional propeller nuts, is molded integrally of semi-rigid plastic. At its center is a threaded bore wherein the thread diameter tapers narrower into the nut and wherein the thread spacing is slightly different from that of the propeller shaft end. The threaded bore lies in an inner cylindrical body which is recessed and connected to the housing in such a way as to further promote retention of the nut on the shaft.

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Inventors: Johnson, Gary E. (Alameda, CA, US)

Application Number: 863731
Filing Date: 1977-12-23
Publication_date: 1979-11-27
Assignee: Johnson Propeller Company (Oakland, CA)
Primary Class(es): 411/290 411/301, 411/311, 411/436, 411/937.1, 411/947, 416/245A
Other Classes:
US Patent Ref:

1447056	Feb, 1923	Bates	151/22.
1920880	Aug, 1933	Parker	416/245.
2255384	Sep, 1941	Hood	151/21.
2270575	Jan, 1942	Bahr	416/245.
2337030	Dec, 1943	Cole	151/21.
2353431	Jul, 1944	Arden	416/245.
3030997	Apr, 1962	Collins	151/7.
3388627	Jun, 1968	Tinnerman	151/7.
3468212	Sep, 1969	Tinnerman	151/7.
3819294	Jun, 1974	Honnold et al.	416/245.
3901627	Aug, 1975	Sullivan	416/245.

Other Refs: 539214876636

Apr, 1957	CA
Sep, 1961	GB

Primary Examiner: Holko, Thomas J.
Assistant Examiner:
Attorney: Owen, Wickersham & Erickson