Abstract: Provided is a rotary blade engine including: an outer cylinder; an inner cylinder; an output shaft; an operation chamber; and a blade, wherein the inner cylinder is provided inside the outer cylinder, and rotates about a second center axis as a center of rotation, the second center axis being provided at a position eccentric from a first center axis of an inner peripheral surface of the outer cylinder; the output shaft is inserted into the inner cylinder, and rotates about the first center axis as a center of rotation; the operation chamber is formed between the outer cylinder and the inner cylinder; and the blade is fixed to the output shaft, rotates together with the output shaft, and defines the operation chamber by floatably penetrating the inner cylinder from an inside of the inner cylinder and slidably contacting the inner peripheral surface of the outer cylinder.

Abstract: A rotary drive includes a housing; a shaft rotatably mounted within the housing and rotatable about a drive axis; a passage internal the housing and extending circumferentially about the shaft; a stator vane within the passage; and a rotor vane within the passage. The stator and rotor vanes are movable between respective closed positions in which the stator and rotor vanes separate the passage into a circumferentially expanding chamber in fluid communication with an inlet in the housing and a circumferentially collapsing chamber in fluid communication with an outlet in the housing, and respective open positions in which the rotor vane is movable circumferentially past the stator vane during rotation of the shaft.

Abstract: A rotary compressor (102) has a shaft (4), a cylinder (5), a piston (8), a first vane (32), a second vane (33), a first suction port (19), and a second suction port (20). The first vane (32) divides a space between the cylinder (5) and the piston (8) along a circumferential direction of the piston (8). The second vane (33) further divides the space divided by the first vane (32) along the circumferential direction of the piston (8) so that a first compression chamber (25) and a second compression chamber (26) having a smaller volume than the first compression chamber (25) are formed within the cylinder (5). The first suction port (19) introduces a working fluid into the first compression chamber (25). The second suction port (20) introduces a working fluid into the second compression chamber (26). The second suction port (20) is provided with a suction check valve (50).

Abstract: A rotary compressor (102) has a shaft (4), a cylinder (5), a piston (8), a first vane (32), and a second vane (33). The first vane (32) divides a space between the cylinder (5) and the piston (8) along a circumferential direction of the piston (8). The second vane (33) further divides the space divided by the first vane (32) along the circumferential direction of the piston (8) so that a first compression chamber (25) and a second compression chamber (26) having a smaller volume than the first compression chamber (25) are formed within the cylinder (5). The piston (8) and the second vane (33) are integrated together, or the piston (8) and the second vane (33) are coupled together.

Abstract: A rotary and linear motion device includes a magnetic stator assembly, opposed electromagnetic actuators, and a linear-to-rotary converter (e.g., cam). Each electromagnetic actuator includes a coil that is configured to reciprocate relative to the magnetic stator assembly or to linearly translate in a common direction relative to the magnetic stator assembly. The electromagnetic actuators are coupled to the linear-to-rotary converter and upon reciprocation or linear translation, drive the linear-to-rotary converter in rotary or linear motion. The device may be located inside a wheel, which may be part of a vehicle. If part of a wheel of a vehicle, the device can be used to provide propulsion, steering, braking, and suspension for the vehicle.

Abstract: An eccentric gearing type clutch includes a housing connected to, and for rotation with, a drive shaft; at least one set of rotors, each set of rotors having two parallelly arranged rotors concentric with the housing and being connected to, and for rotation with, a driven shaft; at least one set of cylinder rings cooperating with respective rotors, each set of cylinder rings having two cylinder rings arranged in parallel and located between the housing and respective rotors, and being capable of upward and downward displacement inside the housing, the two cylinder rings being separated by a separator plate; a vane movably arranged in a slot in each rotor; and a joint control mechanism for controlling upward and downward displacement of the two cylinder rings, wherein space inside the housing is filled with an operation oil and sealed. Reduced frictional wear provides improved clutch performance, enhanced lifespan and braking accuracy.

Abstract: A propeller blade assembly having mounting arrangements for composite aircraft propeller blades.

Abstract: An improved high torque rotary abutment motor is provided that is capable of producing ultra high pressures, while still remaining light weight and reliably efficient. The rotary abutment motor is provided with a body and rotor are sealed in the axial direction with two face spring seals compensating for tolerance and wearing gap. In such a configuration, increasing pressures create increasing force of sealing, thereby allowing operational pressures in excess of what is currently available today.

Abstract: A rotary engine having end plates attached to a rotor and moving therewith. A rotor has a plurality of blades reciprocally mounted therein and placed within a housing. A chamber is formed between the blades, the rotor, the end plates, and a cylindrical stator. The end plates move with the rotor, thereby improving sealing. The structure permits easy assembly and manufacture and substantially reduces sealing problems associated with rotary engines. The rotary engine may be applied to many applications where rotational motion is needed.

Abstract: A fluid power converter, such as a vane-type hydraulic motor comprising a rotor circumferentially surrounded by a stator, the opposing peripheral surfaces thereof creating an annular space therebetween. The opposing surfaces of the rotor and stator each exhibit a plurality of spaced apart radially extending slots for receiving a vane assembly therein. The vane assembly comprises a vane protruding from the slot, a spring located beneath the vane in the slot for forcing an outer edge of the vane against the opposing stator or rotor peripheral surface, respectively. A spring button is placed between the spring and the vane to prevent wear between the vane and the spring by allowing the oscillating vane to wear on the spring button instead of the spring. A notch may be formed in the edge of the vane which contacts the spring button to prevent the spring and spring button from rubbing against the endplate or housing.

Abstract: A motor/pump includes a cylindrically shaped rotor journaled within a similarly shaped housing to define an annular fluid passageway therebetween. The annular passageway is divided into a plurality of discrete fluid chambers by mobile blocking members which are mounted on the rotor near its periphery and stationary blocking members which extend outwardly from the housing to block fluid passage. Both types of blocking members are preferably free to rotate in place. Fluid inlets and outlets positioned around the annular chamber alternately pressurize and depressurize the chambers formed by the blocking members. The stationary blocking members are coupled to the rotor for synchronous rotation to allow passage of the mobile blocking members thereby. One preferred embodiment includes dampeners in the fluid inlets and outlets so that rotation of motor/pump can be controlled to provide the desired motor/pump characteristics.

Abstract: A rotary piston engine having a pear-shaped piston with convex sides is mounted for rotation within a housing whose internal cross-section presents a symmetrical oval shape which is slightly constricted in the middle. The annulus between the piston and the housing is subdivided into intake, compression, expansion and exhaust chambers by four spring loaded vanes. A compression vane and a counter-piston vane are mounted on opposite sides of an external combustion chamber and their movements are coordinated to seal the combustion chamber with respect to the exhaust chamber and the intake chamber during compression and combustion. An engine separation vane, mounted for reciprocal movement and sliding engagement against the piston, separates the intake and exhaust chambers. A vane carried by the piston bears against the housing bore and subdivides each chamber in turn as the piston rotates.

Abstract: In a fluid power converter, such as a hydraulic pump or motor, having a rotor and stator with vanes in both the rotor and stator, the improvement in the vane slots on one or both of the rotor and stator in which a ramp is provided on both sides of the open ends of each slot. The ramps are directed outwardly towards the annular space between the rotor and stator for allowing a crossing vane to cam out of the opposing slot thereby preventing the crossing vane from catching in the opposing slot.

Abstract: A rotary device has a housing with an elliptical inside surface surrounding an elliptical rotor. Vane and seal assemblies on the rotor and housing are controlled with cam and linkages to provide positive effective gas seals between the housing and rotor. A slack adjuster maintains lateral sealing relationships between the housing vale and seal assemblies and opposite side walls of the housing.

Abstract: An internal combustion engine of the rotary type having an elliptical housing within which charge-carrying pistons move. The engine includes a stationary central portion having an elliptical outer surface about which the pistons move. A pair of gate valves slide longitudinally of the central portion, dividing the working chamber into separate compression and expansion zones. A gear system maintains a particular orientation of the pistons. The valves are interconnected to open and close at the proper time to allow the pistons, with the trapped, compressed fuel-air charge carried therein, to pass from the compression zone to the expansion zone.

Abstract: A machine for energy conversion includes a working chamber defined by two relatively movable parts and provided with inlets and outlets for the working medium, both parts having members serving as pistons and abutments which sealingly engage with the walls of the working chamber. The members serving as pistons and abutments may pass through each other and consist of a number of juxtaposed elements which laterally seal against each other and against adjacent portions of the wall of the working compartment and have variable surface area to permit passage.

Abstract: A displacement pump of the blade or vane type comprising a rotor with two blades, said rotor being eccentrically mounted in the casing of the pump. The rotor with its blades provides for a first pumping effect so as to transport material in first partial volumes with a first pulsating characteristic having two maxima and two minima for every full rotation of the rotor. The rotor is constructed with circumferential sections between the blades, said sections being located inside the smallest circumscribed circle of the cross-section of the pump and uniformly merging with remaining circumferences of the rotor. Between the outlet and the inlet of the pump a pivotable flap is arranged. The flap with its front edge slidingly abuts against said circumferential sections of the rotor for thereby inducing a second pumping effect. This second pumping effect has a second pulsating characteristic also having two maxima and minima for every full rotation of the rotor.

Abstract: A fluid power converter having a rotor and stator rotatable with respect to one another about a common axis and having coacting sides in which an annular seal is positioned between the coacting sides for limiting fluid flow therethrough thereby providing increased efficiency and maintaining rotor vane fluid loading. Preferably, the center of the annular seal is eccentrically positioned relative to the common axis whereby the seal continuously and periodically changes its radial sealing contact with the side of at least one of the members for providing a long life side seal. An annular retaining ring connected to one of the members and positioned inside of said seal and including a second seal between the inner ring and the annular seal. Resilient means acting between said one member and the annular seal for resiliently urging the annular seal towards the second member.

Abstract: In a fluid power converter, such as a hydraulic pump or motor, having a rotor and stator with vanes in both the rotor and stator, the improvement in the vanes which are generally rectangular in cross section in which the outer edges of the vanes have a convex curvature of an extent to prevent the sides of the vanes of the rotor and stator from locking on one another upon rotation. However, the curvature is limited to avoid undesirable detenting as the rotor vanes cross the stator vanes. In addition, the maximum slope of the convex curvature is equal to or exceeds the maximum slope of the peripheral surface on the rotor or stator with which the vanes coact to prevent having sharp corners on the vanes which would engage the stator and rotor peripheries and produce rapid wearing of the vanes as well as the peripheries of the stator and rotor which they contact.