Abstract: A continuously variable hydrostatic transmission includes an input shaft connected to drive a hydraulic pump unit, a grounded hydraulic motor unit, and an output shaft. A wedge-shaped swashplate is pivotally mounted to the output shaft in driving connection to receive output torque resulting from the exchange of pressurized hydraulic fluid between the pump and motor units through specially configured ports in the swashplate. A hydraulically actuated ratio controller is pivotally linked to the swashplate to selectively adjust the swashplate angle relative to the output shaft axis and thereby change transmission ratio.

Abstract: A continuously variable hydrostatic transmission includes an input shaft connected to drive a hydraulic pump unit, a grounded hydraulic motor unit, and an output shaft. A wedge-shaped swashplate is pivotally mounted to the output shaft in driving connection to receive output torque resulting from the exchange of pressurized hydraulic fluid between the pump and motor units through specially configured ports in the swashplate. A hydraulically actuated ratio controller shifts the axial positions of spherical bearings mounting a pump cylinder block in the hydraulic pump unit and a motor cylinder block in the hydraulic motor unit to adjust the swashplate angle relative to the output shaft axis and thereby change transmission ratio.

Abstract: A continuously variable transmission includes a pump (258) driven by an input shaft (256) against a wedge-shaped swashplate (260). Hydraulic fluid pressurized in the pump flows through ports (402) in a pump cylinder block (422) into kidney-shaped slots (406) in the swashplate (260), and from there flows into and pressurizes a series of cylinders (394) in a motor cylinder block (366). The pump and motor exert first and second components of torque on a swashplate (260) in the rotational direction on the input shaft (256), and the hydraulic system pressure in the swashplate slots exerts a third component of torque in the same direction on the swashplate (260). The third torque component is a product of the hydraulic system pressure and the differential area of the two ends of the high pressure slot (406P) at the narrow and thick sides of the wedge-shaped swashplate (260).

Abstract: A blower having a stationary casing for rotatably supporting a rotor assembly having a series of open ended chambers arranged to close against the surrounding walls of the casing. Pistons are slidably mounted within each chamber with the center of rotation of the pistons being offset in regard to the center of rotation of the rotor assembly whereby the pistons reciprocate in the chambers as the rotor assembly turns. As inlet port communicates with the rotor assembly to deliver a working substance into the chamber as the pistons approach a top dead center position in the chamber while an outlet port also communicates with the rotor to exhaust the working substance as the pistons approach a bottom dead center position. The displacement of the blower is varied by adjusting the amount of eccentricity between the center of rotation of the pistons and the center of rotation of the rotor assembly.

Abstract: A free piston Stirling engine inertial cancellation system includes a displacer reciprocating in a hermetic vessel enclosing a working space to circulate working gas through a heater, regenerator, and cooler to create a pressure wave in the working space. A power piston, mechanically unconnected to the displacer, is reciprocally driven by the pressure wave to produce a power output stroke in one direction and a working gas compression stroke in the other direction. The displacer and the power piston form substantially a first mass in the working space. A second mass, outside the working space and preferably including an alternator plunger, is mounted in the vessel and is coupled to the first mass momentum exchange relationship.

Abstract: A free piston Stirling engine having a hermetically sealed vessel enclosing a working space which can be charged with a working gas under pressure. A displacer, mounted in the working space at the cold end by a spring diaphragm member, to circulate the working gas through a heater, a regenerator, and a cooler to create a pressure wave in the working gas which acts against a power piston to produce output power. The spring diaphragm member provides an effective decrease in the area of the cold end of the displacer which causes the thermodynamic system to provide motive power for maintaining the oscillation of the displacer, supports and centers the displacer in the working space, and functions as a spring to return the displacer towards its center position when it is displaced toward the cold or hot end.

Abstract: A free-piston Stirling engine usable as a heat pump has a closed vessel filled with helium working gas which is heated at the bottom end and cooled at the top end. The vessel contains a displacer supported for axial reciprocal oscillation on a gas spring post mounted on the vessel. The displacer shuttles the working gas from end to end in the vessel, alternately heating and cooling the gas. The vessel is sealed with a flexible diaphragm which flexes in response to the pressure wave generated in the vessel as the working gas is alternately heated and cooled. When the diaphragm flexes, it displaces hydraulic fluid in a hydraulic chamber and drives a power piston for driving a linear alternator and a gas compressor. A gas spring operating on a second hydraulic cylinder on the other side of the power piston stores part of the energy of the piston stroke and returns it for the return stroke.

Abstract: A single barrel gun has a rotary operating mechanism which is symmetrical about the longitudinal axis of the gun barrel and a feeder for ammunition.

Abstract: The disclosure describes a drive system including an engine with a rotor which has oscillatory motion. The engine may be of either an internal or external combustion type. The drive system further includes a conversion device coupled to the engine rotor and adapted to convert the oscillatory motion of the engine rotor to unidirectional energy. The power output of the system may be controlled by controlling the speed and length of stroke of the engine.

Abstract: A gun is described having a feeder, for a gun bolt, accomodating two independent trains of ammunition, and having two sets of sprockets and articulated feed arms for positively advancing each round in sequence transversely onto the face of the gun bolt.

Abstract: A gun drive system is provided wherein recoil motion is used to pump hydraulic liquid into an accumulator, which in turn, on demand, drives a hydraulic motor and the thereto coupled gun, discharging into a low pressure reservoir, which in turn, resupplies the pump chamber upon counter-recoil motion.

Abstract: A gun bolt is shown which has retractable stop means projecting from the face of the bolt to locate a round of ammunition thereon.