Abstract: The present disclosure provides a rotary device and a rotary system, to which a press-actuated gate valve mechanism is applied. In the rotary device and the rotary system, a pressure fluid chamber is disposed on an outside of a gate valve groove so that an action of a gate valve is controlled by means of a fluid pressure. Based on the rotary device and the rotary system, the present disclosure also provides a fluid motor, a compressor, a pump and a compressor corresponding to the rotary device and the rotary system.

Abstract: A compressor having a torque load reducing unit to move a center of weight to which a gas force is applied is provided. As the torque load reducing unit is formed at an oval-shaped roller, a distance between a rotation center of the roller and an operation point to which a gas force is applied is shortened. This may reduce a torque load to the roller, and may enhance a compression efficiency.

Abstract: Disclosed is a compressor. A lubrication surface, which has the same curvature as an inner circumferential surface curvature of a cylinder and which has a predetermined circumference length, is formed on an outer circumferential surface of a roller contacting an inner circumferential surface of the cylinder. With such a configuration, since the outer circumferential surface of the roller contacting the inner circumferential surface of the cylinder come in surface-contact with each other, an oil film is formed between the roller and the cylinder with a wide area. This can reduce a frictional loss.

Abstract: According to one embodiment, a rotary compressor accommodating an electric motor portion and a compression mechanism portion in a sealed case, wherein the compression mechanism portion comprises a cylinder, a roller, and a vane. The vane is disposed by stacking two divided vanes in a height direction of the cylinder, which is an axis direction of the rotation axis, and where a height dimension of one divided vane is H, and a minute gap between a height dimension of the cylinder and a height dimension of the two stacked divided vanes is L, a proportion of the minute gap L to the vane height dimension H per one divided vane is 0.001<L/number of divided vanes/H<0.0015.

Abstract: A rotary displacement pump of an undulatory disk type; with a pump housing (24) comprising a front end plate (56) and a rear end plate, the pump housing enclosing a stator (40, 48), a rotor (42), a scraper (44) and a scraper guide (46), a shaft (8) extending through at least the rear end plate; the stator including a generally semi-circular arc-formed first stator member (40) and a generally semi-circular arc-formed second stator member (48), the stator, the pump housing and the scraper together with the scraper guide defining an inlet and outlet chamber, wherein at least part of the end faces of the first and second stator members being situated in the outlet chamber are oblique so as to provide an obtuse-angled transition to the inner faces of the front end plate and the rear end plate.

Abstract: A supercharger has an inner wall defining an inner cavity for receiving lobed rotors for rotation therein, a low-pressure inlet and a high-pressure outlet. A sound attenuator is associated with the housing and located adjacent to the high-pressure outlet. The sound attenuator has a tuner chamber and circumferentially spaced tuner ports fluidly connecting the tuner chamber with the internal cavity of the housing to define a Helmholtz resonator. A land is defined between the circumferentially spaced tuner ports such that the high-pressure outlet and low-pressure inner chambers defined between the rotor lobes and the inner wall are fluidly connected when the rotor lobes are in alignment with the land to reduce the pressure differential between the high-pressure outlet and the low-pressure inner chambers.

Abstract: A fuel pump includes a housing having a cavity. The cavity has a rear surface, and a drive gear and driven gear are disposed in the cavity and in mesh with one another for pressurizing fluid. A floating wear plate and a fixed wear plate are disposed in the cavity and are in contact with the drive gear and the driven gear. A flow orifice is formed as part of the floating wear plate, and a portion of the pressurized fluid flows through the flow orifice to an area between the rear surface of the cavity and the floating wear plate, causing the floating wear plate to apply force to the drive gear and driven gear, and causing the drive gear and driven gear to apply force to the fixed wear plate, thereby compensating for any wear of the drive gear, driven gear, and wear plates.

Abstract: A vane pump comprising a case, a rotor disposed in the case, the rotor having a bore, a plurality of vanes radially moveable with respect to the rotor extend from the rotor, a drive shaft engaged with the bore, a second shaft fixedly connected to the case and extending from the case to slidingly engage the bore, a land extending from each end of the rotor, each land cooperating with the case to seal a fluid flow, and each land further axially controlling a rotor position within the case by a sliding engagement, and the drive shaft retainable in a predetermined position with respect to the case.

Abstract: The invention is to reduce flutter and wear and improve the serviceability and wear life of tip seals for roots blower and screw type compressor superchargers where used for improved supercharger output and efficiency. As the seals travel over the outlet opening, the seals move outward in their slots, leading to flutter which may shorten their useful lives. As each seal reaches the center of the outlet opening, it is forced back into its groove by engaging a valley of the mating rotor with the likelihood of increased wear. The invention provides longitudinally spaced support bars extending laterally across the opening in the directions of rotation of the rotors. The support bars have inner surfaces machined with the associated rotor cavity bores and thus smoothly support the seals as they ride over the support surfaces. The support reduces the flexing of the seals and the resultant wear.

Abstract: First pivot bodies are received for rotation in first recesses in the housing member. A piston member is mounted in a eccentric portion of the drive shaft such to orbit in operation. Second pivot bodies are received for rotation in second recesses in the piston member. Dividing vanes are inserted at their ends in slots, formed in the first and second pivot bodies in a free floating manner such to reciprocate in operation of the engine. These vanes define a number of combustion chambers. The ends of the vanes received in the first pivot bodies of the housing member perform pivoting movements and the ends received in the second pivot bodies of the piston members perform orbiting movements. Thus, only small frictions and wear at the vanes in and the pivot bodies occur and the engine can be designed with small dimensions.

Abstract: A rotary piston internal combustion engine comprises a substantially circular-cylindrical compression space (3) and a substantially circular-cylindrical working space (4), rotary pistons (7, 8) which can rotate together about an axis of the compression space (3) and the working space (4), being disposed in the compression space (3) and the working space (4) are slides (19) which are arranged so as to be movable in the radial direction in order to abut sealingly the surface of the respective rotary piston (7, 8). The periphery of the working space has a first exhaust aperture (26). The working space has further exhaust apertures (27) which can be closed by exhaust valves (15) which can be closed and opened successively by means of an adjusting arrangement (17).

Abstract: Disclosed is a rotary combustion unit for a rotary internal combustion engine usually cooperated with a cooperative compressor unit having a two-blade cam piston with a main shaft rotated in a cylinder, two spring-loaded reciprocating gate members reciprocated by the cam piston formed a power stroke and a reset stroke being alternatively repeated while the spark plugs ignite the compressed mixed gas delivered by the cooperative compressor unit repeatedly for a certain instant; and a series of sealing devices disposed to all moving contact surfaces to seal the leakages in all condition even if the contact surfaces were worn out due to a long period of engine running.

Abstract: A fluid conveying device in accordance with the invention includes a housing having an inlet forming a suction side and an outlet forming a pressure side, a cylindrical pumping chamber with intake and discharge openings at opposite sides which respectively are in fluid communication with the suction side and the pressure side and a rotor contained in the chamber having a hollow rotor body mounted for eccentric rotation relative to an axis of the chamber.

Abstract: A swash plate pump having a pump housing comprises a swash plate shaft and a swash plate being disposed in a pump chamber. The pump chamber has an intake and a delivery opening. The pump chamber is formed by two lateral surfaces and by a spherical inner surface and a spherical outer surface. The swash plate performs a wobbling motion. The swash plate is provided with a circular ring that is mounted on the spherical inner surface. A partition, which divides the circular ring of the swash plate, is disposed in the housing with at least one first lateral space disposed on a side that is remote from a drive of the swash plate and a second lateral space disposed on a side that is adjacent to the drive of the swash plate. The shaft passes through a plurality of dynamic seals in the housing. The section of the shaft, disposed within the housing, is in fluid communication with the pump chamber by the medium to be pumped.

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 vane and seal assemblies and opposite side walls of the housing.

Abstract: A rotary piston type fluid machine comprises one or more rotary piston type fluid machine units, each comprising a doughnut type ring-shaped cylinder with an annular slit being provided in the wall at the inward periphery lying in a plane containing the annular central line of the cylinder, a rotor rotatively supported by the cylinder with the peripheral portion being shiftably received within the slit, one or more rotary pistons secured to the peripheral surface of the rotor and adapted to be shifted within the cylinder, and one or more gate valves mounted to the cylinder so as to cross the cylinder and adapted to periodically protrude into the cylinder in synchronization with the movement of the rotary pistons. The rotary piston type fluid machine unit can be utilized as a compressor, an internal combustion engine, a pump, etc. by using it singly, or as a number of the units in combination.

Abstract: A housing has a cylindrical interior which has a peripheral seal chamber parallel to the cylinder axis. Inlet and exhaust ports are formed in the housing, preferably in or near the seal chamber. These ports are sealed from each other by a freely rolling cylinder which rolls on a rolling piston cylinder mounted on a shaft with an eccentric and with a bearing between the eccentric and the piston. The rolling seal also engages the seal chamber, and to reduce friction a rotatable support on a fixed axis is disposed in the seal chamber and in turn is sealed by a rubbing seal to the seal chamber wall. The rolling seal cylinder retreats into the seal chamber when the piston cylinder reaches the region of the seal chamber. This structure eliminates prior art rubbing seals which engaged the rolling piston.

Abstract: A sealing arrangement in a rotary machine between the eccentric rotary piston and the separating slide engaging a recess in the piston. A spring-loaded strip is guided in a lengthwise slot of the rotary piston, and is in contact with each side wall of the separating slide throughout the entire length. The vertex formed by an obtuse angle of the front sides of the strip in the region of the center line of the strip, is in sliding-motion connection with the side wall of the separating slide. The center line of the strip forms an angle of substantially 55.degree. with the center line of the separating slide, at dead center. Compression springs associated with the rear side of the strip are held in blind holes which are spaced by a predetermined distance. The recess of the rotary piston which accommodates the separating slide, has a trapezoidal cross-section.

Abstract: A rotary compressor, more particularly, a positive cam type compressor wherein a movable isolator plate is driven by a positive cam. The positive cam has a helically twisted disk portion, and is fitted in a cylinder slidably. The cylinder cavity is divided into operating compartments in which suction and compression processes are performed alternately, when the positive cam is rotated by a driver shaft. The positive cam and the isolator plate form a sliding pair, so that the plate can be reciprocatively moved when the cam rotates. The circulation of lubricating oil is positively effected by the reciprocating motion of the isolator plate.Thus, there can be provided a considerably small and light compressor that is constructed with relatively smaller number of parts. Furthermore, the compressor of the present invention may have good characteristics of vibration and noise. The above compressor is suitable to an air conditioner for vehicle.

Abstract: Rotary engine construction wherein a lobed rotor cooperates with unique retractable separators to divide the bore into work chambers, the rotor lobes or pistons performing the intake, compression, power and exhaust functions rapidly, efficiently and smoothly, and wherein the simplicity of construction allows the number of firings per rotor revolution, their sequence and the compression ratio to be readily selected for a particular end use. The engine further embodies novel intake and exhaust valves and actuating structure therefor, work chamber inactivation mechanism, and positive oil pumping means.

Abstract: A rotary compressor is provided in which the space between the rotor and the encompassing housing wall is separated into suction and discharge spaces by reciprocating vane assemblies, each of which includes a blade portion having a distal end portion carrying a pivotal shoe, the joint between the shoe and blade being of cylinder and socket character with the blade end forming the cylinder part of the joint and the shoe having a socket cavity for receiving the cylinder. In other forms, the shoe has a generally channel shape in transverse cross section with the leg of the channel facing the compression side having vent holes which reduces the turning movement applied to the shoe under conditions of high differential pressures between one side of the shoe and the other. This arrangement promotes stability and reduces the possibility of loss of equilibrium of the shoe against the moving surface.

Abstract: A vane assembly for a rotary compressor is provided having a shoe for sliding against a relatively moving surface and carried on a blade edge in a cylindrical pivot type joint. The shoe is generally channel-shaped in transverse cross-section and has openings in both of the opposite legs of the shoe. The cylindrical-shaped edge of the blade upon which the shoe is mounted is dimensioned relative to the socket of the shoe receiving the edge to permit movement of the cylindrical edge in a direction away from the web of the shoe under a condition of high differential pressure across the shoe so that a relief passage from the high pressure space on the one side of the shoe to the low pressure space on the other side of the shoe is provided by the openings in the legs of the shoe and the cylindrical edge moved apart from the web of the shoe.

Abstract: A rotary internal combustion engine comprising an elongated rotor having an oval shaped cross-section secured to a compartmentalized shaft rotatably disposed in an elongated cylindrical shaped bore in a stationary engine block. A plurality of vanes, having a curved wedge-shaped cross-section, are pivotally secured to the block and arranged to move into the cylindrical shaped bore into sealing engagement with the outer surface of the rotor. Fuel and air are delivered through the compartmentalized shaft into chambers between adjacent vanes where fuel is compressed, ignited, and allowed to expand applying torque to the oval shaped rotor. The oval shaped cross-section of the rotor has long sides which are substantially straight and first and second arcuate ends.

Abstract: A vane type engine having a housing, a shaft journalled therein with a piston member mounted on the shaft and a plurality of vanes forming with the housing a piston member a plurality of chambers. A seal member supported in each opposite axial end face of the piston member and engaging the end walls of the housing, an insert supported in each vane and extending therethrough to engage at one end the seal member in the piston member and at the other end the base of the slot in which the vane is disposed, the fit between the insert and the vane extension being such as to prevent the passage of gas between the insert and the vane extension but to permit movement therebetween in the axial direction resulting from different expansion of the piston, vane and housing during operation.