Marine propulsion – Screw propeller – With means effecting or facilitating movement of propulsion...
Patent
1999-11-15
2000-11-21
Swinehart, Ed
Marine propulsion
Screw propeller
With means effecting or facilitating movement of propulsion...
114357, B63H 5125
Patent
active
061494763
ABSTRACT:
An automatically adjustable trim system for a marine propulsion system provides automatic trimming of the propeller in response to increased loads on the propeller. A propulsion unit is attached to a boat transom through a tilt mechanism including a transom bracket and a swivel bracket. In a first embodiment, the transom bracket is clamped to a flexible transom which flexes in response to forces exerted on the transom during acceleration. In a second embodiment, the transom bracket is clamped to a transom bracket mounting platform that is generally parallel to and pivotally attached to the transom. A trim angle biasing mechanism is mounted between the transom and the transom bracket mounting platform for automatically adjusting the trim angle. A third embodiment includes a trim angle biasing mechanism incorporated into the transom bracket or swivel bracket. A fourth embodiment includes a spring-loaded pawl assembly between the swivel bracket and transom bracket.
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Brunswick Corporation
Swinehart Ed
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