Marine propulsion – Screw propeller – With means effecting or facilitating movement of propulsion...
Patent
1993-12-06
1994-10-25
Huppert, Michael S.
Marine propulsion
Screw propeller
With means effecting or facilitating movement of propulsion...
440 55, B63H 2126
Patent
active
053584368
ABSTRACT:
An outboard engine assembly has a stern bracket adapted to be fixed to a boat body, a swivel case vertically swingably supported on the stern bracket, an engine body laterally swingably supported on the swivel case, and a tilt cylinder device disposed between the stern bracket and the swivel case. The outboard engine assembly has a corrosion-resistant mechanism comprising a first anodic metal element attached to a lower portion of the engine body, a second anodic metal element attached to a submersible portion of the stern bracket, a first electric connecting circuit by which the first and second anodic metal elements are electrically connected to each other, and a second electric connecting circuit branched from the first electric connecting circuit and connecting the first electric connecting circuit to the tilt cylinder device. The tilt cylinder device comprises a cylinder unit actuatable by a pressurized fluid supplied from a pressure fluid supply. The cylinder unit is disposed substantially centrally in a planar region defined by the swivel case and lying parallel to a tilt shaft pivotally connecting the case and the swivel bracket. The pressure fluid supply is divided and disposed on both sides of the cylinder unit. The tilt cylinder device comprises a cylinder coupled to the swivel case, a piston rod coupled to the stern bracket. The outboard engine assembly has a damage preventing mechanism for allowing relative movement of the cylinder and the piston rod when the engine body is subjected to an excessive external force.
REFERENCES:
patent: 4687449 (1987-08-01), Fenrich
patent: 4784625 (1988-11-01), Nakahama
patent: 5000707 (1991-03-01), Saitoh et al.
patent: 5030148 (1991-07-01), Funami et al.
patent: 5032094 (1991-07-01), Katogi
Soda Chiharu
Ueno Kimiaki
Brahan Thomas J.
Burt Pamela S.
Carrier Joseph P.
Honda Giken Kogyo Kabushiki Kaisha
Huppert Michael S.
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