Marine propulsion unit with protected screw

Details Marine propulsion unit with protected screw Marine propulsion unit with protected screw

1977-05-03

1978-08-15

Blix, Trygve M.

115 18E, B63H 514

Patent

active

041064259

ABSTRACT:
The screw of a marine propulsion unit is mounted in a passage of an elongated casing in an axially central position. The two axially terminal portions of the passage contain protective devices for preventing accidental insertion of a limb of a human adult or child to a depth sufficient to reach the rotating screw without preventing flow of water through the terminal passage portions.

REFERENCES:
patent: 2473603 (1949-06-01), Miller
patent: 2714800 (1955-08-01), Gongwer
patent: 2983246 (1961-05-01), Manley
patent: 3358635 (1967-12-01), McRee
patent: 3389558 (1968-06-01), Hall
patent: 3802377 (1974-04-01), Porter et al.

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