Marine propulsion – Screw propeller – Having transmission
Patent
1998-10-28
2000-09-26
Avila, Stephen
Marine propulsion
Screw propeller
Having transmission
192 4891, B63H 2308
Patent
active
061235911
ABSTRACT:
A marine drive includes an improved transmission and shifting mechanism to facilitate a smoother transition when shifting into a reverse drive condition. The transmission includes a positive clutch and a friction-type sub-clutch. The shifting mechanism desirably includes a shift cam with first and second cam surfaces. The first cam surface effects actuation of the positive clutch and the second cam surface effects actuation of the friction sub-clutch. The first and second cam surfaces are configured so that the shifting mechanism causes the friction sub-clutch to engage before the positive clutch engages. As a result, the instantaneous loading on an engine of the marine drive when shifting the transmission into reverse is reduced.
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Avila Stephen
Olson Lars A.
Sanshin Kogyo Kabushiki Kaisha
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