Marine propulsion unit with seal between water tube and adapter

Details Marine propulsion unit with seal between water tube and adapter Marine propulsion unit with seal between water tube and adapter

1988-03-24

1989-04-11

Peters, Jr., Joseph F.

Marine propulsion

Means for accomodating or moving engine fluids

Cooling for engine

123 4187R, B63H 2110

Patent

active

048202142

ABSTRACT:
In an outboard marine propulsion unit (10) having a lower gearcase (18) with a water tube (28) supplying cooling sea water to a powerhead thereabove supported on an adapter plate (16) having a water passage (34) vertically non-aligned with the water tube, structure is provided for connecting and sealing the top of the water tube to the adapter plate. A first fitting (50) receives the top of the water tube in sealing relation. A second intermediate fitting (102) communicates with the first fitting and is sealed to the adapter plate along a horizontally extended oblong cavity area (40) having a first section (42) vertically aligned with the water tube, and a second section (43) vertically aligned with the water passage and the adapter plate. The intermediate fitting has an oblong groove (114) in its upper surface (112) surrounding an aperture (108) at one end thereof which is vertically aligned with the water tube, and being vertically aligned at its other end with the water passage in the adapter plate. A rubber O-ring ( 116) is conformed to the oblong groove and received therein and engages the underside of the adapter plate in sealing relation.

REFERENCES:
patent: 2549479 (1951-04-01), Kiekhaefer
patent: 4392779 (1983-07-01), Bloemers et al.
patent: 4421490 (1983-12-01), Nakahama
patent: 4684351 (1987-08-01), Watanabe et al.
Mercury Marine Service Manual Parts Catalog, Part No. 90-13286, pp. 26 and 27, Aug. 1985.

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