Abstract: A sliding vane compressor has a housing and a rotor mounted in the housing. The rotor has axial endfaces which are juxtaposed with respective housing surfaces from which they must be kept at a predetermined spacing. This spacing is obtained by mounting in open recesses of the axial rotor endfaces respective elements of a material having a higher coefficient of thermal expansion than the material of the rotor itself. As the compressor comes up to operating temperatures the resulting thermal expansion of these elements causes them to protrude beyond the axial rotor endfaces by a distance corresponding to the desired spacing.

Abstract: In a rotary compressor of the sliding vane type, the vanes maintain sliding contact with the inner wall of the housing while moving periodically inward and outward in generally radial slots in the cylindrical rotor, which is provided with conduits for injecting oil or other liquid into the working chambers formed by the rotor, the vanes and the housing's inner wall. The housing has inlet ports for a gas to be compressed in the working chambers and has outlet ports for the compressed gas. Valves are provided to open and close said rotor conduits in synchronism with said periodic moving of the vanes, whereby the liquid is injected into the working chambers only during such periods when these chambers are closed to the gas inlet and outlet ports.

Abstract: The eccentric disc pump has a series of stator discs defining a series of axially interconnected pump stages each having a rotor disc mounted eccentrically on a common shaft extending within central cavities of the stator discs and angularly offset relative to the rotor disc of a preceding pump stage, adjacent stator and rotor discs being angularly offset one relative to the other at given angles of displacement and coupling means, e.g. rods, wedges and grooves or studs and recesses, respectively engaging each stator disc with that of an adjacent pump stage and positively locating such adjacent stator discs in positions, offset by a second angle one half of the first mentioned angular displacement between corresponding adjacent rotor discs whereby in each pump stage the cavity of the stator disc forms an enveloping curve for the path of the rotor disc rotatable therein.

Abstract: This invention relates to a rotary internal combustion engine operating on the four-stroke cycle: intake, compression, combustion and exhaust and the utilization of a star-shaped eccentric for converting the rotation of the rotor to driving the mainshaft, and an associated carburetor.

Abstract: A rotary vane machine utilizing tapered vanes which are rotatably connected to a stationary center shaft and which extend through openings in the wall of an off-center hollow cylindrical rotor into sliding contact with an inner wall of the machine. Working chambers are formed between the vanes outside of the hollow rotor. Roller seals are provided in the rotor wall openings to isolate the inside of the rotor from the working chambers. Rollers which form the seals are disposed, with a close tolerance, in slots formed in the rotor wall openings on each side of the tapered vanes. A small opening, which communicates with one of the working chambers, is formed in the back of each roller slot to admit pressurized fluid from the working chamber to help bias the roller seals into contact with the tapered vanes. A check valve may be provided in the small opening to maintain pressure behind the roller seal.

Abstract: A reversible reduction gear motor which is driven by a pressurized fluid such as air or a liquid is provided having a hollow recoil rotor, which engages a drive motor and which is mounted rotatably on a shaft which extends through the recoil rotor. This shaft, which extends through the recoil rotor, has a reduction gear mounted on one end which engages a pinion mounted on one end of the shaft of the drive rotor. The other end of the shaft, which extends through the recoil motor, has a pinion mounted on it which engages a second reduction gear, the axis of rotation of which is coincident with the axis of rotation of the drive rotor. The driving fluid is supplied by conduits disposed within the motor and is controlled so that it can be supplied to drive the rotors in either a forward or reverse direction.

Abstract: A rotary piston internal combustion engine of the epitrochoidal type is provided with means whereby the cooling effect of a cooling liquid medium on a trailing chamber portion of the combustion chamber is reduced or eliminated. Thus a tendency that the mixture portion within the trailing chamber portion is discharged unburned with the exhaust is eliminated, thus improving the fuel economy and HC control in the exhaust.

Abstract: A radial engine with a rotating cylinder block is disclosed which is capable of high rates of rotation although operating on the two stroke cycle. An intake air compressor and an exhaust driven turbine are provided, both in driving connection with the same output shaft as the cylinder block. A peripheral manifold serves both to provide the stator of the exhaust turbine and to mask exhaust passages from the cylinders in the block so as to modify the two stroke cycle of the engine by effectively advancing the end of the scavenge phase. A system for recovering oil from the block is disclosed, and the block is reinforced by a peripheral tension band.

Abstract: A rotary mechanism including a housing defining a chamber, a shaft journalled in the housing to extend through the chamber and having an eccentric within the chamber, a rotor within the chamber and journalled on the eccentric, the rotor having surfaces cooperating with the housing to vary the volume of at least one portion of the chamber upon rotation of the shaft, the rotor and the housing relative to each other, coolant receiving cavities in the rotor adjacent the surfaces, a source of coolant for the cavities, and agitators within the cavities and movable therein for cyclically displacing the coolant to enhance heat transfer.

Abstract: A rotary engine having a high surface to volume ratio including a housing having intake and exhaust ports and defining a chamber, a shaft journalled in the housing to extend therethrough and having an eccentric within the chamber, and a rotor on the eccentric within the chamber, the rotor having a body consisting essentially of a material having a low coefficient of thermal conductivity.

Abstract: Liquid-cooled rotary piston internal combustion engine with a housing consisting of at least one annular shell with interior guideway and two parallel end pieces, and bounding an interior space. The shell and end pieces containing cavities for circulation of two cooling circuits completely separate from each other. One of the circuits cools the region of the housing in the hot arc of the shell, where the ignition, expansion and exhaust strokes take place in the interior space. A liquid-cooled piston revolves in the housing. The cooling circuit of the piston and the shell cooling circuit traversing the region of the hot arc are connected in series.

Abstract: A rotary piston engine is provided which is suitable for working or conveying media in the form of hot deposit-forming gases or vapors. The engine comprises a housing and a rotor mounted rotatably within the housing. The clearance between the rotor and the housing increases as the engine temperature decreases and decreases as the engine temperature increases. This can be achieved by making the rotor of a material having a higher coefficient of expansion than the material of the housing, and/or by cooling the rotor to a lesser extent than the housing.

Abstract: The improved system for liquid cooling of a rotor of a rotary piston mechanism applies to those types having two housing walls spaced apart by a trochoidal shaped peripheral wall to define a multi-lobed cavity within which a multi-cornered rotor is eccentrically supported for planetary movement, and in which the rotor has a hub portion and peripheral wall portions defining therebetween cooling spaces which communicate with the area exteriorly of the rotor through an opening adjacent each end of the hub portion. The improved rotor cooling system comprises a cooling liquid discharge nozzle disposed in at least one of the housing walls and connecting the discharge nozzle to a source of pressurized cooling liquid. The discharge nozzle is positioned so as to direct emitted cooling liquid into the adjacent rotor opening and the cooling spaces in the rotor.

Abstract: A rotary internal combustion engine including a single shaft supporting two rotors recessed to form working chambers in adjacent sections of a housing with a cylindrical interior, one rotor performing the intake and compression functions and the other, the combustion and exhaust functions.

Abstract: An improved rotary mechanism having a housing defining an operating chamber, a shaft journalled in the housing and extending through the chamber, a rotor journalled on the shaft and within the operating chamber, at least one seal receiving groove in the rotor and a seal within the groove having a surface sealingly engaging the housing. An elastomeric O-ring is disposed within the groove and sealingly engages the sides of the groove. It is also disposed adjacent the seal oppositely from the sealing surface. A conduit is provided for directing fluid under pressure to the interior of the O-ring to cause the same to bias the seal against the housing.

Abstract: A new type of engine, which incorporates rotors each equipped with a plurality of vanes and has a volume of a portion necessary for constant pressure heating expansion turned into a volume of an air motor side, is composed by functionally combining vane rotary air compressors and vane rotary air motors. More particularly, there is an engine conception mainly intended for vehicles of solving, without reducing the engine efficiency, problems concerning complete combustion and prevention of nitric oxide production, which have been generally considered it difficult to realize by reciprocating engines.

Abstract: A rotary vane compressor in which the pressure difference between inlet and outlet passages is utilized to accomplish lubrication without a supplementary oil pump comprises a housing with a cylindrical bore, a hollow rotor eccentrically rotatable on a shaft in the bore and at least one vane radially slidable in a slot in the rotor and sealingly engaging with the inner surfaces of the bore to define fluid chambers of varying volume. The compressor further has inlet and outlet passages communicating with the bore and an oil sump disposed below the bore. A first passageway connects the outlet passage with the sump, and the hollow of the rotor constitutes a second passageway. A third passageway connects the sump with one end of the hollow and a fourth passageway connects the other end of the hollow with the inlet passage.

Abstract: Cooling means are provided for the stationary and orbiting scroll members of scroll-type apparatus. These cooling means comprise fluid coolant channels in the end plates and in the involute wraps of the scroll members and means to circulate a fluid coolant therethrough. In the case of the stationary scroll member the coolant may be water, oil or the like; while in the case of the orbiting scroll member the coolant is the lubricating oil used to lubricate a thrust bearing and the coupling means. The resulting effective cooling of the scroll members makes it possible to form scroll apparatus in large sizes.

Abstract: An oil seal protector for rotary engines is provided to prevent deleterious combustion gases from damaging the oil sealing assemblies provided on each side of the engine rotor. The sealing assemblies include an O-ring and the protective device comprises annular grooves which extend completely about the sealing assembly on each side of the rotor and which are located radially outwardly from such sealing assemblies. A seal ring is fitted within each of the annular grooves of the protective device and spring means are provided for urging the ring against the sides of the engine housing.

Abstract: An improved oil seal arrangement for a rotary engine in which one side of the rotor has an adapter ring attached thereto with the ring having circumferentially-spaced ribs aligned with the internal partitions of the rotor and in which the outer periphery of the adapter ring has an annular notch to provide an annular recess between the ring and rotor to receive therein an oil seal assembly, and in which the other side of the rotor has a gear ring attached to the rotor with the gear ring having circumferentially-spaced ribs aligned with the internal partitions of the rotor and in which the outer periphery of the rotor gear ring has an annular notch to provide an annular recess between the gear ring and rotor to receive an oil seal assembly.

Abstract: An improved sealing structure for rotary engines of the type having a housing with a rotor therein, the latter having at least two apices. The rotor includes a plurality of grooves corresponding to the number of apices and each groove is located at a respective one of the apices. A plurality of apex seals is provided with one disposed in each of the grooves so as to extend partially out of the groove to engage the housing. Each seal includes an internal closed cavity and the cavity, in turn, is only partially filled with a body of vaporizable material. The material has the characteristic of undergoing a phase change to the vapor phase when subjected to the relatively high temperatures present within the housing due to combustion gasses and frictional contact with the housing and from the vapor phase when subjected to the relatively lower temperature of the rotor. The material circulates within the seal while undergoing phase changes to continuously cool the seals to preclude distortion of the same.

Abstract: A method and a device for injecting liquid into a screw compressor is disclosed which allow the injected cooling liquid to move through the compressor in a pure axial movement. Through this a more even distribution of the liquid in the compression chambers is achieved resulting in improved cooling of the working medium.

Abstract: A rotary piston of a rotary piston internal combustion engine has radially and inner and outer annular seals carried within grooves of the rotary piston thrust surface axially facing the engine casing sidewall with the axial end face of the oil seal tapering radially outwards relative to the engine sidewall and forming lip angles between the tapered end wall of the seal such that the lip angle for the outer seal is between 1.degree. and 3.degree., the lip angle for the inner seal is between 3.degree. and 5.degree., and the spring biasing force acting on the radially outer seal is less than that acting on the radially inner seal. Preferably, an oil removal bore is formed in the land portion between the grooves for return of the oil delivered thereto by action of the oil seal to the oil pan of the engine.

Abstract: A screw rotor machine is disclosed which comprises a screw cam rotor provided with gudgeons and a screw thread rotor enclosing the screw cam rotor. The screw cam rotor is made as single-thread-screw which is generated in relation to an inner base cylinder. The profile of the single-thread-screw is such that it in each cross section encloses both the inner base cylinder and the cylindrical extensions of the gudgeons. Furthermore the single-thread-screw comprises two parts having different lead angles.