Steering and propulsion system for marine use
First Claim
1. A marine propulsion device comprising:
- prime mover drive means,marine propeller means, andmeans for supplying power to said propeller means in selectively variable amounts, including;
a differential gearing unit including a power input drive shaft drivingly connected to said drive means, oppositely extending output driven shafts, gear means for differentially driving said output shafts from said power input shaft, and means for drivingly connecting said propeller means to one of said output shafts; and
brake means for selectively applying braking pressure to the other of said output shafts,whereby power to said propeller means will be applied in direct proportion to the braking pressure applied by said brake means.
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Accused Products
Abstract
A universal steering and propulsion unit for marine craft utilizes a power train which includes a differential gearing unit with control of the power delivered being accomplished through selective braking of one side of the differential. Steering may be accomplished by a 360° rotating ability of the propeller without interruption of the power delivered to the propulsion unit. The power train also provides a special gearing arrangement whereby the propeller drive shaft may be driven so as to provide forward thrust regardless of the direction of rotation of the output drive shaft of the power unit, thus obviating the necessity for oppositely rotating output shafts when dual drive units are required. The oil pressure about the propeller shaft and gear transfer housing is used for feathering the propeller blades.
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Citations
10 Claims
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1. A marine propulsion device comprising:
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prime mover drive means, marine propeller means, and means for supplying power to said propeller means in selectively variable amounts, including;
a differential gearing unit including a power input drive shaft drivingly connected to said drive means, oppositely extending output driven shafts, gear means for differentially driving said output shafts from said power input shaft, and means for drivingly connecting said propeller means to one of said output shafts; andbrake means for selectively applying braking pressure to the other of said output shafts, whereby power to said propeller means will be applied in direct proportion to the braking pressure applied by said brake means. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An adjustable pitch propeller comprising:
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a rotatable propeller shaft; drive means to rotate the propeller shaft; means for lubricating the drive means with a lubricating fluid; propeller blade means; means for mounting said propeller blade means on said propeller shaft for rotation therewith, said mounting means including means forming a fluid pressure cylinder therein; said propeller blade means including piston means affixed thereto and located in said cylinder, a source of selectively variable fluid pressure acting on said piston means comprising a bore in the propeller shaft in fluid communication with the cylinder and with the lubricating means, and means to selectively pressurize the lubricating fluid; and cam and follower means acting between said piston means and said fluid pressure cylinder for rotating said piston relative to said cylinder during linear displacement thereof. - View Dependent Claims (9, 10)
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Specification