Exhaust coupling assembly for a marine stern drive

Details Exhaust coupling assembly for a marine stern drive Exhaust coupling assembly for a marine stern drive

1978-02-06

1979-12-18

Sotello, Jesus D.

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

115 35, 180296, F01N 300

Patent

active

041788737

ABSTRACT:
A marine stern drive includes an inboard engine having an exhaust passageway connected to an outboard drive unit having an exhaust passageway. A transom bracket assembly positioned between the engine and the drive unit permits vertical pivoting of the drive unit for steering and horizontal pivoting of the drive unit for steering and horizontal pivoting of the drive unit for trimming. The improvement includes a first exhaust pipe connected to the inboard engine and a second exhaust pipe connecting to the drive unit. The first exhaust pipe extends outward through the transom of the boat and has an open end position centered on and adjacent the vertical pivot axis and below the vertical pivot axis. The second exhaust pipe extends towards and ends in alignment with the end position of the first exhaust pipe to form an interface which includes an opening between the pipe ends.

REFERENCES:
patent: 3183880 (1965-05-01), Shimanckas
patent: 3190254 (1965-06-01), Meibauer
patent: 3396693 (1968-08-01), Bergstedt
patent: 3908368 (1975-09-01), Witt

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