USA as Represented by Secretary of the Navy

Richard W Uhrich

Ronald S Reich

An omnidirectional variable thrust propeller for a vehicle includes a hub, plurality of blades, and a plurality of shafts. Each shaft is coaxially rotatably connected to a respective blade and extends through the hub at an acute angle to a hub longitudinal axis. Each shaft has a lever arm and an inner end portion which terminates inside the hub. A reciprocably moveable device engages the inner end portions of the blade shafts to uniformly rotate the blades in one direction when the device moves longitudinally in one direction and uniformly rotate the blades in an opposite direction when the device moves in an opposite direction to enable a change of thrust. Another device pivotally supports the reciprocably movable device at a variable acute angle to the longitudinal axis. Another device selectively move the reciprocably movable device about the pivot point to nonuniformly change the rotation or pitch of the blade that alters the propeller's thrust direction.

Omnidirectional variable thrust propeller

An underwater hydraulic pressure regulator includes an ambient pressure ronsive cylinder and a regulator cylinder which are each fitted with integrally coupled pistons. The ambient pressure cylinder, as the name implies, is opened to ambient pressure by suitable ducting. The ambient pressure works against a volume of low pressure gas on the other side of a piston contained in the ambient pressure cylinder which in turn displaces the piston within the regulator cylinder. The back of the regulator cylinder is in communication with a conventional gas accumulator such that the restortative force on the back face of the second piston is influenced by both the ambient pressure and the gas accumulator pressure.

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San Diego, CA, United States of America

Richard W Uhrich