Desmodromic shift adaptor for a counter-rotating propeller shaft

Details Desmodromic shift adaptor for a counter-rotating propeller shaft Desmodromic shift adaptor for a counter-rotating propeller shaft

1990-03-28

1991-01-22

Basinger, Sherman

Marine propulsion

Screw propeller

Having transmission

B63H 2128

Patent

active

049867741

ABSTRACT:
An adaptor member for accommodating use of a desmodromic cam-actuated shifting mechanism into a conventional propeller shaft cavity formed in the lower end of the gearcase of a marine propulsion system, wherein forward thrust on the propeller shaft is transferred to the gearcase at a point aft of the forward and reverse gears mounted about the propeller shaft. The adaptor member includes a cup, which is adapted to mount the fore one of the forward and reverse gears through a bearing member. The adaptor member further includes an internal passage within which is disposed the movable cam of the shifting mechanism, and an opening is in communication with the passage for allowing connection of the shift shaft to the shifting cam after assembly of the adaptor member into the gearcase cavity.

REFERENCES:
patent: 3487803 (1970-01-01), Alexander
patent: 3919964 (1975-11-01), Hagen
patent: 4530667 (1985-07-01), McCormick
patent: 4820210 (1989-04-01), Dretzka
patent: 4850910 (1989-07-01), Higby et al.
patent: 4865570 (1989-09-01), Higby et al.

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