Marine propulsion – Screw propeller – With means effecting or facilitating movement of propulsion...
Patent
1988-08-10
1989-07-11
Basinger, Sherman D.
Marine propulsion
Screw propeller
With means effecting or facilitating movement of propulsion...
440 61, 440 63, 440 80, B63H 512, B63H 2542
Patent
active
048467413
ABSTRACT:
A boat steering mechanism contemplates the disposition of parallel side-by-side drive shafts outboard of the boat's fore and aft centerline. The shafts are supported for high speed rotation by drive sleeves which are in turn supported by members attached to the transom at effectively a single universal pivot point. Such attachment of the support members to the transom allows the props at the ends of the drive shafts to swing along a shared arc in response to being driven to port or starboard by steering pistons. This enables the props to be positioned, during a turn, so that their degree of immersion in the water through which the boat is being driven remains essentially constant despite the heeling of the boat in the turn.
REFERENCES:
patent: 4544362 (1985-10-01), Arneson
patent: 4565532 (1986-01-01), Connor
patent: 4645463 (1987-02-01), Arneson
patent: 4748929 (1988-06-01), Payne
Pre-Publication Copy of Advertisement and Short Notice, pp. 14 and 59 of Boatracing Magazine Series 2, vol. 45, published in the Jul. Time Frame of 1988, Exact Publication Date Unknown.
Basinger Sherman D.
Beres William J.
Brahan Thomas J.
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