Propeller drive

Details Propeller drive Propeller drive

1994-10-14

1996-03-26

Avila, Stephen

Marine propulsion

Screw propeller

Having transmission

440 80, B63H 510

Patent

active

055016235

ABSTRACT:
A propeller drive having coaxially aligned propellers separately operable or operable in unison in the same rotary direction. Independent operation of each propeller or operation of both in unison for maximum speed provides an efficient propeller drive for a marine vessel.

REFERENCES:
patent: 917206 (1909-04-01), Watts
patent: 4642059 (1987-02-01), Nohara
patent: 4828518 (1989-05-01), Kouda et al.
patent: 4909767 (1990-03-01), Hayasaka

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