Exhaust valve assembly for preventing ingress of water to an out

Details Exhaust valve assembly for preventing ingress of water to an out Exhaust valve assembly for preventing ingress of water to an out

1975-07-30

1977-01-18

Blix, Trygve M.

115 5E, B63H 2132, B63H 2126

Patent

active

040033317

ABSTRACT:
A marine outboard motor is provided with an exhaust valve assembly to operate automatically and prevent ingress of water in the event of a capsize. The exhaust gases pass downward through a vertical tube, to a ring of exhaust ports in the tube wall and, if the engine is inverted, a weighted sleeve fitted telescopically round the lower end of the tube drops into a position where it closes the exhaust ports in a fluid-tight manner. Inside the tube is a check-valve in the form of a captive ball, that upon inversion, drops on to a valve seat located above the ring of exhaust ports.

REFERENCES:
patent: 2317237 (1943-04-01), Wilen
patent: 3051170 (1962-08-01), Benzel
patent: 3062172 (1962-11-01), Moore
patent: 3745962 (1973-07-01), Murphy

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