Marine propulsion – Screw propeller – Propulsion unit casing
Patent
1986-08-20
1988-02-09
Peters, Jr., Joseph F.
Marine propulsion
Screw propeller
Propulsion unit casing
440 88, 440900, 181229, B63B 1700, F02M 3500
Patent
active
047239271
ABSTRACT:
A cowl (2) is provided for a marine drive outboard engine (4). A front shield (26) covers a front throat (24) of the cowl for receiving combustion air and defines an input air path flowing rearwardly (28), then forwardly (30), then rearwardly (32) into the throat. Side scoops (52, 54, 60, 62) receive air flowing rearwardly and direct same interiorly of the cowl. Separators (68, 72) on the inner surfaces of the left and right sides (20, 22) of the cowl separate water from the incoming fresh air, and have upper vent openings (70, 74) allowing separated air to escape into the interior of the cowl. Upper vent openings (76, 78) in the top (16) of the cowl communicate with the upper vent openings (70, 74) in the separators (68, 72) to allow hot air to escape. The rear (18) of the cowl includes one or more discharge openings (80, 82) communicating with the bottom of the separators (68, 72) to allow water to escape.
REFERENCES:
patent: 2815742 (1957-12-01), Kiekhaefer
patent: 3195530 (1965-07-01), Heidner
patent: 3557902 (1971-01-01), Brown
patent: 3610198 (1971-10-01), Alexandrowicz
patent: 4379702 (1983-04-01), Takada et al.
patent: 4403971 (1983-09-01), Kobayashi et al.
patent: 4509926 (1985-04-01), Jacobson
patent: 4620607 (1986-11-01), Breckenfeld
Boede Robert H.
Walsh James R.
Brunswick Corporation
Peters Jr. Joseph F.
Swinehart Edwin L.
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