Tilt cylinder unit for outboard engine

Details Tilt cylinder unit for outboard engine Tilt cylinder unit for outboard engine

1993-04-27

1995-02-14

Sotelo, Jesus D.

Marine propulsion

Screw propeller

With means effecting or facilitating movement of propulsion...

188300, B63H 512

Patent

active

053890183

ABSTRACT:
A tilt cylinder unit for use with an outboard engine on a boat hull has a cylinder, a piston slidably disposed in the cylinder, and a rod having an end coupled to the piston. The cylinder may be coupled to the outboard engine or the boat hull, and the rod may be coupled to the boat hull or the outboard engine. The cylinder has a first chamber which is expanded when the tilt cylinder unit is extended and a second chamber which is compressed when the tilt cylinder unit is contracted, the first and second chambers being defined in the cylinder by the piston. A third chamber, which may be defined in the cylinder or an auxiliary tank separate from the cylinder has a portion filled with a gas. The second and third chambers are interconnected by an orifice, and the first, second, and third chambers are interconnected by a plurality of communication passages. A manually operable valve is coupled between the communication passages for selectively opening and closing the communication passages simultaneously.

REFERENCES:
patent: 3599594 (1971-08-01), Taipale
patent: 4091897 (1978-05-01), Andrepont
patent: 4493659 (1985-01-01), Iwashita
patent: 4521202 (1985-06-01), Nakahama
patent: 4545769 (1985-10-01), Nakahama et al.
patent: 4551104 (1985-11-01), Iwashita et al.
patent: 4575342 (1986-03-01), Nakahama et al.
patent: 4605377 (1986-08-01), Wenstadt
patent: 4784625 (1988-11-01), Nakahama
patent: 4925411 (1990-05-01), Burmeister et al.

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