Outboard motor and boat

Details Outboard motor and boat Outboard motor and boat

1991-07-12

1994-02-01

Mitchell, David M.

Marine propulsion

Means for accomodating or moving engine fluids

Cooling for engine

440 77, 440900, 123195P, B63H 2124

Patent

active

052827640

ABSTRACT:
The present invention comprises an outboard motor (1) having a number of special features which prevent the ingress of water so that it can be operated underwater and a boat (10) also having a number of special features to be used together with the outboard motor (1). The features on the outboard motor (1) include a device for creating a water-tight seal on the carburetor shaft mountings (24, 26); a device for protecting the air intake of the carburetor against ingress of water (8, 9, 11, 13; 9, 14, 15); a bellows (28) coupled to and encapsulating the starter motor (5); a sealed housing (32) for the electrical system having a moisture-tight seal around each wire at the junction with the sealed housing; a one-way valve (22) disposed in the exhaust (6); and means for protecting the atmospheric vents (20, 21) against ingress of water. The features on the boat (10) include such an outboard motor (1) plus a ducted air intake (11, 15) for the carburetor (2 ) passing through an air sump (9).

REFERENCES:
patent: 3552121 (1971-01-01), Kitagawa et al.
patent: 4375356 (1983-03-01), Stevens
patent: 4758190 (1988-07-01), Van Vuren
patent: 4846300 (1989-07-01), Boda
patent: 5052961 (1991-10-01), Uchida et al.
Four Wheeler, Nov. 1989, vol. 26, No. 11, Canoga Park, Calif.

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