Variable volume chamber devices are disclosed. The chambers may be defined by the space between two complementary rotors. The volume of the chambers may vary as a function of the variation of relative rotational speeds of the two rotors.

A high pressure axial piston pump displaces high pressure, high volume fluid into a 1994-2003 7.3 liter power stroke or T444E International engine. A pump housing forms a central borehole, an intake port, and two discharge ports angled about 122 degrees from each other and in fluid communication with engine. A drive shaft rotates a cylinder block about an axis of rotation. A cam is tilted at an angle relative to axis of rotation. Multiple pistons, having a cam end and a block end, reciprocate through cylinder block. The cam end is constrained to follow surface of cam. When pistons move proximally to tilted cam, the block end restricts intake of fluid, and cam end enables discharge of fluid. When pistons move distally from tilted cam, the block end enables intake of fluid, and cam end restricts passage through discharge ports. The pump is fabricated from billet aluminum material.

A high pressure axial piston pump displaces high pressure, high volume fluid into a 1994-2003 7.3 liter power stroke or T444E International engine. A pump housing forms a central borehole, an intake port, and two discharge ports angled about 122 degrees from each other and in fluid communication with engine. A drive shaft rotates a cylinder block about an axis of rotation. A cam is tilted at an angle relative to axis of rotation. Multiple pistons, having a cam end and a block end, reciprocate through cylinder block. The cam end is constrained to follow surface of cam. When pistons move proximally to tilted cam, the block end restricts intake of fluid, and cam end enables discharge of fluid. When pistons move distally from tilted cam, the block end enables intake of fluid, and cam end restricts passage through discharge ports. The pump is fabricated from billet aluminum material.

Axially protruding and centrally cool able pistons rotate within a cylindrical main chamber. Each piston is individually kinetically linked to a flywheel. As the pistons are individually accelerated and decelerated along their continuous rotating path, rotating volumes between them angularly expand and contract. Such rotating piston mechanism may be part of compression and/or expansion stages of a combustions engine system that may further feature a combustion system and/or a particle fuel evaporator in between them in which solid fuel particles are heated such that their evaporable portion evaporates to be used as engine fuel. Absence of valves and self cleaning centrifugal effects in the rotating volumes of the compression and/or expansion stages are thereby advantageously utilized to combust solid particle fuel and/or their evaporating content with low risk of particle clogging or built up. Remaining carbon particles may be extracted from the combustion engine via a carbon particle extraction port.

Axially protruding and centrally cool able pistons rotate within a cylindrical main chamber. Each piston is individually kinetically linked to a flywheel. As the pistons are individually accelerated and decelerated along their continuous rotating path, rotating volumes between them angularly expand and contract. Such rotating piston mechanism may be part of compression and/or expansion stages of a combustions engine system that may further feature a combustion system and/or a particle fuel evaporator in between them in which solid fuel particles are heated such that their evaporable portion evaporates to be used as engine fuel. Absence of valves and self cleaning centrifugal effects in the rotating volumes of the compression and/or expansion stages are thereby advantageously utilized to combust solid particle fuel and/or their evaporating content with low risk of particle clogging or built up. Remaining carbon particles may be extracted from the combustion engine via a carbon particle extraction port.

A hydraulic machine comprising a rotary toroidal piston chamber with two or more stationary pistons, which are provided to operate in such chamber, and having input and output ports for each piston provides a bidirectional motor or pump operable with high constant torque and high efficiency. Radially movable gates provide closed sections of the piston chamber and open to allow continuous rotation in one direction without reciprocating pistons or cranking mechanism. Rotation of the chamber is achieved by reaction to the force of hydraulic pressure on the pistons. A rotary piston chamber with four stationary pistons, operating as a four piston hydraulic motor simultaneously driving itself as a two piston pump functions as a pressure multiplier providing output pressure higher than the input pressure. Uses include sump pump, pumped energy storage and hydroelectric power generation.

A hydraulic machine comprising a rotary toroidal piston chamber with two or more stationary pistons, which are provided to operate in such chamber, and having input and output ports for each piston provides a bidirectional motor or pump operable with high constant torque and high efficiency. Radially movable gates provide closed sections of the piston chamber and open to allow continuous rotation in one direction without reciprocating pistons or cranking mechanism. Rotation of the chamber is achieved by reaction to the force of hydraulic pressure on the pistons. A rotary piston chamber with four stationary pistons, operating as a four piston hydraulic motor simultaneously driving itself as a two piston pump functions as a pressure multiplier providing output pressure higher than the input pressure. Uses include sump pump, pumped energy storage and hydroelectric power generation.

A hydraulic device comprises a rotary toroidal piston chamber having a rectangular space with a bottom, two sidewalls, and an open top. Four stationary pistons and two retractable gates for each piston are within the toroidal chamber mounted on a chamber wheel fixed to an axle on which it rotates, wherein the pistons and the gates are evenly spaced around the toroidal chamber separating the chamber into four partitions. A piston support for each piston is configured to hold the piston stationary while the piston chamber rotates. A stationary cover encircles and seals the open top of the piston chamber wherein openings through the stationary cover allow each of the piston supports to pass through and be sealed. An input port opening and an output port opening are in the stationary cover for each partition. The piston chamber rotates by reacting directly to continuous hydraulic force on the stationary pistons.

A hydraulic device comprises a rotary toroidal piston chamber having a rectangular space with a bottom, two sidewalls, and an open top. Four stationary pistons and two retractable gates for each piston are within the toroidal chamber mounted on a chamber wheel fixed to an axle on which it rotates, wherein the pistons and the gates are evenly spaced around the toroidal chamber separating the chamber into four partitions. A piston support for each piston is configured to hold the piston stationary while the piston chamber rotates. A stationary cover encircles and seals the open top of the piston chamber wherein openings through the stationary cover allow each of the piston supports to pass through and be sealed. An input port opening and an output port opening are in the stationary cover for each partition. The piston chamber rotates by reacting directly to continuous hydraulic force on the stationary pistons.

The present invention relates to an apparatus for pumping or compressing a fluid, the apparatus characterized by a compression chamber including an inlet and outlet, opposed front and rear vane members disposed inside said compression chamber, each vane member including at least one axially extending vane segment and at least one radially disposed open segment adapted to receive a vane segment of the opposed vane member, wherein adjacent vane segments of mating vane members form radial compartments there between. The assembly further includes a swing arm assembly for effecting equal and opposite rotational oscillation of the front and rear vane members such that adjacent vane segments oscillate toward and away from one another simultaneously, thereby creating a bellowing effect which draws fluid into the chamber via the inlet and discharges fluid out of the chamber via the outlet. The invention further relates to an assembly for translating rotational motion of an input shaft to oscillatory motion of the vane members.