Abstract: A rotary internal combustion engine has: a rotor; a housing circumscribing a rotor cavity, the rotor received within the rotor cavity, the housing having a peripheral wall and a side housing assembly secured to the peripheral wall, the side housing assembly having plates located at spaced apart ends of the peripheral wall, the plates defining seal running surfaces in sealing engagement with opposed end faces of the rotor, the plates made of silicon carbide.

Abstract: A rotor of a rotary internal combustion engine, with each of the end faces having at each of the apex portions a recess defined therein in communication with the at least one apex groove, an end seal received in the recess in sealing engagement with the apex seal of each of the at least one apex groove, a first seal member in sealing engagement with the end seal and with the face seal of the face groove defined between the apex portion and a first one of the adjacent apex portions, and a second seal member in sealing engagement with the end seal and with the face seal of the face groove defined between the apex portion and a second one of the adjacent apex portions.

Abstract: A compressor includes a screw rotor and a gate rotor. The screw rotor has a plurality of spirally extending groove portions disposed radially outwardly from the center axis of the screw rotor. The gate rotor has a plurality of tooth portions circumferentially arranged on an outer circumference to engage the groove portions. Preferably, an inclination angle of a groove portion side face contacting the tooth portions is inclined relative to a circumferential direction of the gate rotor varies. Alternatively a first plane contains the screw rotor center axis, a second plane orthogonally intersects the screw rotor center axis, a third plane orthogonally intersects the first and second planes, the gate rotor center axis is on the third plane, and the tooth portions do not overlap the first plane as viewed orthogonally relative to the third plane.

Abstract: A compressor includes a screw rotor and a gate rotor arranged to form a compression chamber. The screw rotor has an outer circumferential surface with at least one groove portion. The gate rotor has a plurality of tooth portions. Preferably, a first plane contains the screw rotor center axis, a second plane orthogonally intersects the screw rotor center axis, and a third plane orthogonally intersects the first plane and the second plane. The gate rotor center axis passes through an intersection point of the first, second and third planes. The gate rotor center axis is inclined relative to the second plane toward the same side as the groove portions of the screw rotor, as viewed in a direction perpendicular to the third plane.

Abstract: The aim of the invention is to improve the sealing possibilities between the elastic stator lining and corresponding connecting flanges of eccentric screw pumps. In order to increase the sealing surfaces, the stator lining comprises, at least at one of its ends, a conical sealing surface which may be provided with one or more prominent or recessed parts.

Abstract: A static-fluid-pressure-driven rotary motor includes a casing, which defines a chamber having a fluid inlet and a fluid outlet, and at least one rotor assembly rotatably mounted within the casing. The rotor assembly includes a rotor, a plurality of barrier elements associated with, and extending outwards from, the rotor, and a resilient seal associated with at least an outer edge of each of the barrier elements. As the rotor turns about its axis of rotation, the outer edges of the barrier elements passing in proximity to a facing wall of the casing chamber against which the resilient seals for a sliding seal while accommodating variations in clearance between the outer edge of the barrier element and the facing wall of the casing.

Abstract: A rotating fluid machine is provided with a rotor chamber, a rotor accommodated in the rotor chamber, and vanes guided by vane grooves formed in the rotor. A U-shaped vane seal is held by a seal holding groove formed in the end face of each of the vanes. The opposite ends of the vane seal are fitted into slits in seal ancillary members which are fitted into engaging holes formed in the end faces of each of the vanes. The seal ancillary members are pressed by springs toward the inner circumferential face of the rotor chamber. The pressure of a gaseous phase working medium introduced into the bottom parts of the seal holding grooves is restrained from leaking out of the ends of the vane seal by the seal ancillary members. Thus, sealing performance can be secured by pressing the vane seal against the inner circumferential face of the rotor chamber.

Abstract: A rotary device containing a housing having a curved inner surface with a profile equidistant form a trochoidal curve, an eccentric mounted on a shaft disposed within the housing, a rotor mounted on the eccentric shaft which contains at least three sides, a partial bore located at the intersection of adjacent sides, and at least three rollers rotatably mounted within the partial bores of the roller. The rotor is comprised of a front face, a back face, a first side, a second side, and a third side. On each front and back face, between adjacent sides, an opening is formed. The openings are on opposing front and back faces are offset from a centerline of the rotary device.

Abstract: An internal geared wheel pump that does not have a crescent shaped piece. The pump has an internal geared wheel that meshes with a pinion. The pinion and geared wheel are mounted in a rotatable manner in a housing that has a suction connection and a pressure connection. The geared wheel has passages that produce each time a conductive connection between the base of the tooth and the envelope surface of the geared wheel. Conductive connections are produced between the bearing flanks of the teeth of the geared wheel or the teeth of the pinion and the radial boreholes of the geared wheel.

Abstract: A rotary device containing a housing with a curved inner surface in the shape of a trochoid and an interior wall, an eccentric mounted on a shaft disposed within the housing, a rotor mounted on the eccentric shaft and several pins attached to the rotor and extending from the rotor to the interior wall of the housing. A continuously arcuate track is disposed within the interior wall of the housing, and the pins are disposed within the track.

Abstract: A sickleless internal gear pump with an internally toothed ring gear and a pinion meshing with the ring gear, the two fitted rotatably in a common casing. The ring gear includes radial conduits for the medium to be pumped and elements which are radially movably fitted in grooves in the tooth heads of the ring gear or pinion. The sealing elements slide on the opposing tooth head of the pinion or ring gear and include control spaces on which pressure is applied from the rear. For pressure application in the control spaces there is machined at least one control slot in the area of the pressure buildup zone, on at least one side of the part of the casing which laterally bounds the ring gear and pinion.

Abstract: The invention relates to a sickleless internal gear pump with an internally toothed ring gear and a pinion meshing with the ring gear. The pinion and ring gear are rotatably mounted in a housing having a suction port and a pressure port. The ring gear includes radial ports for the medium to be pumped. The tooth heads of the ring gear or the tooth heads of the pinion have a profile groove into which a plurality of sealing elements are respectively inserted. The sealing elements are able to slide on the radially opposite tooth of the pinion or ring gear. The invention is characterized by a profile groove, viewed in axially perpendicular section, which has no ports. The individual sealing elements are provided with a channel establishing a fluid connection between the interior of the profile groove and the sealing face of the sealing element. The channel, viewed in the direction of rotation of the pinion, is enveloped by the material of the sealing element.

Abstract: A Wankel-type engine has a housing with a chamber therein having parallel, axially spaced side surfaces joined by an end surface which has a semi-circular contour in an axially longitudinal plane. A rotor, eccentrically mounted on a shaft carried by the housing for rotation in the chamber, has a pair of side portions adjacent to the chamber side surfaces and a plurality of lobes, each having an end portion which has a semi-circular configuration corresponding to the semi-circular contour of the chamber end surface. Multi-layer, self-expanding seals engaging the chamber end surface are carried by each rotor end portion, and the rotor side portions carry seals engaging the chamber side surfaces. Lubrication is supplied to the seals. The semi-circular chamber end surface is provided on a separate member mounted between a pair of housing members, or alternatively is provided on complimentary portions of a pair of housing members.

Abstract: The improved rotor is for a rotary compressor or expansion engine of the type having a rotor supported for planetation in a multi-lobe housing cavity and comprises an endless band embracing the peripheral surface of the rotor, which band functions to continuously engage at the apex portions of the rotor, the peripheral surface of the housing cavity and thereby seal the working chambers from each other as the rotor rotates within the cavity.