Marine propulsion device including propeller protection means

Details Marine propulsion device including propeller protection means Marine propulsion device including propeller protection means

1976-11-03

1978-06-27

Blix, Trygve M.

115 42, B63H 2126

Patent

active

040968197

ABSTRACT:
Disclosed herein is a marine propulsion device including a lower unit having a gear case, a laterally extending anti-cavitation plate extending above a propeller carried on a propeller shaft rotatably mounted in the gear case, and a pair of generally flat side fins, each of which has a laterally extending trailing edge located wholly forwardly of the propeller and which either extend laterally in coplanar relationship from the opposite sides of the gear case, extend laterally in coplanar relationship from the opposite sides of the lower unit at a location between the anti-cavitation plate and the gear case, extend outwardly and downwardly in an angular relationship from the opposite sides of the gear case, or extend laterally in coplanar relationship from the opposite sides of the lower end portion of a vertical fin extending downwardly from the gear case.

REFERENCES:
patent: 1181634 (1916-05-01), Bivert
patent: 1869977 (1932-02-01), Modin
patent: 2791196 (1957-05-01), Strang
patent: 2894477 (1959-07-01), Brown

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