Marine propelling apparatus

Details Marine propelling apparatus Marine propelling apparatus

1987-10-19

1988-12-27

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Plural impellers having relative movement or independent...

Coaxial rotation

416170R, 416169R, 416 93A, 415 68, B63H 510

Patent

active

047937734

ABSTRACT:
This disclosure relates to a marine propulsion system including a double propeller. To obtain a forward thrust, the two propellers are driven in opposite directions while producing forward propulsion forces. To obtain a rearward thrust, only one propeller is driven in the direction to produce a rearward force. The two propellers are attached to coaxial inner and outer horizontal shafts. A single vertical shaft is coupled by bevel gears to the shafts, and movable clutches couple the driving force to the horizontal shafts.

REFERENCES:
patent: 2672115 (1954-03-01), Conover
patent: 2989022 (1961-06-01), Lundquist
patent: 3478620 (1969-11-01), Shimanckas
patent: 4540369 (1985-09-01), Caires

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