Abstract: A sealing system of rotary piston machines, the rotor excludes rotor discs which are arranged next to one another, and which are seated on the common rotor axle and are pressed apart from one another by acting spring and/or gas forces in the joints between the discs in such a way that the end sides of the discs which point towards the side walls of the housing bear sealingly against the latter and thus prevent the access of the medium to the axles. Assemblies comprising movable shaped lamellae which adapt to the changing joint widths and prevent an inner flow around the rotor are present in the part joints between the discs.
Abstract: A vane pump for an automatic transmission includes a housing which may be spaced from the axis of the transmission input shaft axis and driven by a chain or gear train driven by the torque converter hub or disposed on and about the axis of the transmission input shaft and driven at engine speed. The vane pump includes a pair of port plates which reside on the end faces of a pump body having a cylindrical chamber which receives an eccentrically disposed rotor that is coupled to a stub shaft. The rotor includes two halves that define a central chamber. The rotor also includes a plurality of radial slots which receive a like plurality of vanes. The outer ends of the vanes are in contact with the wall of the cylindrical chamber and the inner ends are in contact with a single vane ring received within the central chamber.
Abstract: A compressor includes a compression mechanism for suctioning gas through a suction path to compress the gas and discharging the compressed gas and a check valve for preventing backward-flow of the gas in the suction path. The check valve includes an accommodation hole (its one end is opened toward the suction path and its another end is functioned as a reservoir), a valving element accommodated within the accommodation hole movably, a valve seat provided at the opened end of the accommodation hole for closing the suction path while the valving element is pressed thereonto and an urging component for urging the valving element toward the valve seat. A release groove is grooved on an inner surface of the accommodation hole. The reservoir is communicated with the suction path through the release groove. The compressor can reduce machining cost, component count and weight in respect to the check valve.
Abstract: The high efficiency gear pump includes a pump housing which defines an internal pump chamber. The pump chamber includes opposed first and second elongate gear receiving sections spaced on opposite sides of a central chamber section. The first and second gear receiving sections each have an arcuate peripheral wall which extends between a low pressure inlet port and a high pressure outlet port positioned on opposite sides of the central chamber section between the first and second gear receiving sections. Coaxially mounted on a drive shaft for rotation therewith are first and second pump drive gears having teeth which rotate in minimal spaced relationship with the arcuate peripheral wall of the first gear receiving section. The first and second pump drive gears are mounted for floating axial movement relative to each other and the drive shaft.
Abstract: Hydraulic vane machine with a rotor having several radially movable vanes, and with a stator having a stator bore, in which the rotor is arranged rotatably, and whose internal wall is made as a guiding contour on which the vanes bear, and with a sideplate arrangement on each axial front side of rotor and stator, which define the vane cells together with the rotor, the vanes and the stator. In such a machine an improvement of the operation behaviour is desired. For this purpose, the sideplate arrangements are fixed on the rotor and rotate together with the rotor in relation to the stator.
January 29, 1998
Date of Patent:
June 6, 2000
Lars Martensen, Gunnar Lysh.o slashed.j Hansen, Henry Madsen M.o slashed.ller
Abstract: A high pressure vane pump has a two-piece rotor enclosed by a housing having an inlet and an outlet and an eccentric ring for controlling the reciprocation of vanes in a guide part of the rotor; the eccentric ring is closed by opposite end plates and a moveable crown part of the rotor is supported on the guide part to provide four degrees of freedom between the guide part and the crown part including movement of the crown part axially of the guide part; movement of the crown part clockwise and counterclockwise of the guide part; and yaw movement of the crown part with respect to the vertical axis of the guide part. Rotation of the rotor causes the crown part to be shifted axially of the guide part to increase the pressure output of the pump at high speed operation and to reduce the frictional losses between the rotor and the housing during start-up.
Abstract: A piston of a rotary piston engine of trochoidal type of construction, which is radially divided and the parts of which are connected shiftable axially against each other via axial guide bolts and among each other engaging against an elastomeric or resiliently deformable sealing ring, whereby the axial seals of the piston in the sidewalls thereof are structurally fixed or stationary sealing strips. The radial edges of these sealing strips coincide or cover themselves with the contours of the piston flanks or sides and they have cuts, notches or depressions in the piston corners for the radial seals of the piston which are in alignment with the grooves thereof.
Abstract: A rotary vane pump having a metallic rotor, rotatably positioned within an ellipsoidal cavity, a pair of stationary wear plates on the sides of the cavity, the rotor having a plurality of radial slots each of which contain a carbon composite vane riding against the ellipsoidal cavity in reciprocal motion to define variable volume pumping chambers and a pair of carbon composite rotor side plates each being positioned between one side of the rotor and the stationary wear plates, each of the rotor side plates having a similar pattern of congruent radial slots to that of the rotor, the vanes having sufficient width to extend into the slots of both side plates to drive the side plates with the rotor during operating.
Abstract: A rotary piston engine is disclosed of a novel, geometric construction whereby substantially pressure dependent operation is ensured along with continuous torque characteristics. In the preferred inventive embodiment, an elongated rotatable shaft having a disc plate intermediate thereof is provided with a pair of rotor assemblies disposed to either side of the disc plate and attached for rotation as a unit, each rotor assembly including an inner and an outer concentrically arranged ring of different diameters with a radially extending piston vane disposed therebetween in linking relationship therewith. A slotted intermediate ring is placed between the inner and outer rings of each respective rotor assembly, the intermediate ring being journalled off-center of its respective rotor assembly such that the intermediate ring effects a rolling contact seal with both the inner and outer rings of the rotor assembly during rotation thereof.
Abstract: A rotor is eccentrically journalled for rotation within a bore of a stationary housing formed with end walls and inlet and outlet ports. One or more blades are radially slidable within grooves in the rotor and biased into sealing engagement with the inner circumference of the housing. Rotation of the rotor and blades produces suction and pressure chambers within the housing to displace fluid from the inlet to the outlet. The rotor and blades are each formed in two sections with a resilient member inserted inbetween, the resilient members urging the respective sections longitudinally into sealing engagement with the end walls.