Marine propulsion – Screw propeller – Propulsion unit casing
Patent
1989-05-12
1990-09-25
Basinger, Sherman
Marine propulsion
Screw propeller
Propulsion unit casing
440 88, B63H 2114
Patent
active
049590332
ABSTRACT:
A stern drive unit comprising a metal upper gear housing which is adapted to be mounted on the transom of a boat for pivotal movement relative thereto about a generally vertical steering axis and about a generally horizontal pivot axis, a generally vertical drive shaft rotatably supported by the upper gear housing and adapted to be driven by an engine, a lower gear housing fixed to the upper gear housing for common movement therewith, a propeller shaft which is rotatably supported by the lower gear housing, which is driven by the vertical drive shaft and which is adapted to have mounted thereon a propeller, and plastic covers covering more than a majority of the upper gear housing.
REFERENCES:
patent: 3339517 (1967-09-01), Bergstedt
patent: 3460506 (1969-08-01), Johns et al.
patent: 3822763 (1974-07-01), Adams et al.
patent: 3957011 (1976-05-01), Hurst
patent: 4446827 (1984-05-01), Kubozuka
patent: 4480609 (1984-11-01), Hayashi
patent: 4495903 (1985-01-01), Asano
patent: 4559018 (1985-12-01), Nakahama et al.
patent: 4565534 (1986-01-01), Bland
patent: 4800854 (1989-01-01), Boda et al.
Parts Catalog showing Cobra Stern Drive placed on sale in 1986 and referring, on pp. 24 and 25, to Part 63, No. 983,967 Cover, which is fabricated of plastic.
Bland Gerald F.
Freitag Michael W.
Mondek Martin J.
Avila Stephen P.
Basinger Sherman
Outboard Marine Corporation
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