Marine drive exhaust system with shaped O-ring seals

Details Marine drive exhaust system with shaped O-ring seals Marine drive exhaust system with shaped O-ring seals

1989-01-11

1989-09-19

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Exhaust gas or exhaust system element heated, cooled, or...

60320, 60323, 2771675, 285 41, F01N 304

Patent

active

048669342

ABSTRACT:
A marine drive exhaust system (10, 12, 14) is provided with resilient, shaped rubber O-ring seals (20, 74) between facing surfaces (16, 18) of the exhaust manifold (10) and exhaust elbow (12), and the facing surfaces (70, 72) of the exhaust elbow (12) and the exhaust pipe (14). Each of the shaped O-ring seals has an inner peripheral rib (22, 76) extending peripherally around the exhaust passage and generally conforming to the shape thereof and being spaced laterally between the exhaust passage and the peripheral water passages. Each of the shaped O-ring seals has an outer peripheral rib (28, 82) extending peripherally around the water passages and spaced laterally outward of the inner rib by a gap (30, 84) through which the water passages extend.

REFERENCES:
patent: 613053 (1898-10-01), Bates
patent: 3798904 (1974-03-01), Gleason
patent: 4573318 (1986-03-01), Entringer et al.
patent: 4707986 (1987-11-01), Takada
Mercury Marine Mercruiser 420, Parts Catalog 90-16286, 1987, pp. 16 and 17.

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