Abstract: A cylinder-rotation-type compressor includes a discharge valve that is disposed in a cylinder and configured by a reed valve, a valve body portion that closes a discharge hole provided in the cylinder, and a support portion that couples the valve body portion with a fixing portion fixed to the cylinder. A shape of the valve body portion and a shape of the support portion are substantially symmetrical with respect to a line segment extending in a radial direction of a rotating axis. The valve body portion is disposed on a radially outer side of a connection portion of the fixing portion and the support portion.

Abstract: A compressor includes a drive shaft, a housing, an annular rotor, and cradles. The rotor has cradle windows. The rotor can rotate within the rotor chamber together with the drive shaft while being in sliding contact with the housing at the circumferential surface. The cradles are provided in the cradle windows to be pivotable about pivot axes. When pivoting, the cradles maintain the compression chambers in an airtight state by being in contact with the housing at pivoting ends of the cradles, the pivoting ends extending along the direction parallel to the axis. The rotor chamber includes an outer operation chamber located on the outside of the rotor, and an inner operation chamber located on the inside of the rotor. The cradles, and the outer operation chamber and/or the inner operation chamber form the compression chambers, the volumes of which are varied by the rotation of the rotor.

Abstract: A rotary compressor includes a casing (1), a cylinder block (2), a rotor (3), a sliding plate (4), and a discharge valve (7). A suction port (6) and a discharge port (8) are provided on the casing (1). A rotating center axis of the cylinder block (2) deflects from a rotating center axis of the rotor (3), so that an outer circumference surface of the rotor (3) is inscribed with an inner circumference surface of the cylinder block (2). A head portion of the sliding plate (4) is embedded in a cylindrical body of the cylinder block (2), and a main body of the sliding plate (4) extends into a sliding plate slot of the rotor (3). The discharge valve (7) is provided on the outer circumference of the rotor (3) in front of a rotating direction of the sliding plate (4). A cylinder block inlet (12) is provided on the cylinder block (2) in rear of the rotating direction of the sliding plate (4).

Abstract: An artificial lift system provides a lifting mechanism located in a well. The lifting mechanism communicates with a remote intake that is located below in the well. A compressed gas source provides compressed gas to the well annulus at a pressure that is sufficient to move the well fluid from the remote intake up to the lifting mechanism. The well has an annulus and tubing. The well has isolation elements that isolate the producing formation from compressed gas in the annulus. Various sources of compressed gas can be used such as a compressor, an accumulator or a gas sales line. A controller is provided to control the intermittent application and removal of compressed gas in the annulus and also to control the operation of the lifting mechanism. The well could be a horizontal well or a vertical well. The well could be a cased hole or an open hole well.

Abstract: The invention relates to an oscillating slide machine working on an eccentric circulatory motion, whereby the oscillation guide grooves (19) on the inner rotor (5) are provided with groove front edges (20) and groove rear edges (21) of differing heights, such that the diameter of the imaginary circle (17), connecting all groove front edges (20), is smaller than the diameter of the circle connecting all the groove rear edges (21).

Abstract: A fluid rotary machine (10) includes an inner housing (12) provided with a manifold (68) for directing working fluid through the machine (10) and an outer housing (14) coupled to the inner housing (12) so that the outer housing (14) can rotate relative to the inner housing (12). A plurality of swinging gates (16) are supported along one longitudinal edge in corresponding sockets (38) formed along the inner circumferential surface (32) of outer housing (14). A plurality of elongated lobes (30) are supported on and evenly spaced about the inner housing (12). There is one intake port (24) and one exhaust port (26) between adjacent lobes (30). The gates (16) are biased so as to ordinarily seal against the inner housing (12). High pressure fluid enters through the inlet port (24) to a region between a lobe (30) and gate (16) causing the outer housing (14) to rotate. Eventually the gate (16) wipes across an exhaust port (26) venting the high pressure fluid through the exhaust port.

Abstract: Expansible chamber apparatus for a positive displacement, high volume, low friction, reversible rotary pump for gases and/or liquids. Two or more chambers are provided, defined in part by one or more small abutments that move radially in a slot to switch or redirect fluid flow with minimal loss of fluid mechanical energy. A complementary pair of chambers, formed by a single groove, is radially divided by a concentric land ring and is longitudinally segmented by the abutment, which seals the chambers against reverse leakage. The abutment is slightly smaller in radial dimension than the groove and is floated to avoid hard contact with the inner and outer land ring surfaces of the groove by a balancing of the Bernoulli effects that develop. The apparatus can also be operated as a fluid compressor, as a motor and in other applications, in single cycle or multiple cycle operation. The pump provides substantially non-pulsating fluid flow in one or more stages.

Abstract: A positive-displacement piston mechanism includes a small rotor integrated with a main axis and biased against a cylindrical large rotor for holding a bearing-housing. Slant sliding slots are formed at facing places in equally divided space between the large rotor and the small rotor. Vanes having an angle are fitted into the slots as if they were bridges, and an inlet and an outlet are provided on side-housings.

Abstract: A fluid compressor includes a cylinder and a columnar rotary rod. The rod is arranged in the cylinder so as to extend in the axial direction thereof and be eccentric thereto, and orbitable relative to the cylinder without rotation with respect to the cylinder while part of the rod is in contact with the inner circumferential surface of the cylinder. A spiral groove is formed on the outer circumference of the rod and a spiral blade is fitted in the groove. The space between the outer circumference surface of the rod and the inner circumference surface of the cylinder is divided by the blade into a plurality of operating chambers. The groove has an overall length larger than that of the blade by a predetermined length so that the blade is displaceable relative to the rod in the radial and circumferential directions of the rod without sliding on the inner circumferential of the cylinder.

Abstract: The oil pump includes an air tight housing within which is rotatably fitted a circular ring and a driven shaft rotatably mounted in the housing, and within the ring, for rotation about an axis eccentric from, but substantially parallel to, the ring axis. An inner rotor in the circular ring is mounted to the driving shaft for rotation therewith and a plurality of circumferentially spaced vanes each have an inner end pivotally mounted to the rotor. Each of the vanes is oriented with respect to a radial direction such that the vanes are centrifugally swung radially outward and into contact with the ring in response to rotation of the driving shaft and the inner rotor, thereby providing airtight pump chambers between adjacent ones of the vanes. Intake and discharge ports are respectively communicated with the pump chambers at circumferential positions thereof where the pump chambers are expanding and contracting, so that oil from the intake port is pumped by the pump chambers to the discharge port.

Abstract: A rotary vane vacuum pump assembly is disclosed which is characterized by the absence of the discharge of lubricating oil with the exhaust airstream, and which includes an internal stator and a surrounding rotor. Pivotal vanes are mounted on the interior of the rotor, so as to define a plurality of air chambers which expand and contract as the rotor rotates about the stator. Also, a freely rotatably cylindrical sleeve is positioned between the stator and vanes, so that the relative sliding contact of the vanes on the surface of the sleeve is minimized, to thereby eliminate the need for internal oil lubrication. In one preferred embodiment, a hydraulic pump is joined to the vacuum pump to form a compact assembly, and wherein the hydraulic pump supplies oil to the bearings which mount the rotor.

Abstract: A fluid pump for pumping a fluid from an input conduit to an output conduit comprising a housing having a cup-shaped rotor assembly rotatably disposed within the housing. A vane ring assembly is slidably disposed within the rotor assembly. A protuberance on the vane ring engages a corresponding indentation disposed on an inner and outer cup to prevent the vane ring assembly from rotating within the rotor assembly. A hub assembly is disposed within the vane ring assembly such that the axis of the hub assembly is parallel and eccentric to the axis of rotation of the vane ring assembly. A wear plate is in juxtaposition with the open end of the rotor assembly and a plurality of band-shaped vanes interconnect the vane ring assembly and the hub assembly. The vanes are disposed in a spaced-apart relationship parallel to the axis of rotation of the vane ring assembly to form a plurality of pump chambers.

Abstract: A rotary engine having two opposite rotating rotors forming a substantial part of a toroidal chamber such that the toriodal chamber is parted into two lateral parts formed by an outer rotor having a disk-like part forming one side of the chamber and a lateral flange forming the outside and an inner rotor having a disk like part and a center hub forming the inside of the chamber, the rotors each having half cylinder shaped piston pockets which rotatably receive half cylinder shaped pistons that are rotatably supported on their rotors. The pistons are rotated in the same direction with respect to each other and are carried around the toroidal chamber by the rotors as they rotate in opposite directions on the rotors forming an expansion chamber between the pistons as they rotate. The pistons are rotated by stationary gears and the pistons pass each other in the expansion chamber twice on each rotation of the engine. The axis of rotation of the pistons is parallel to the axis of rotation of the rotors.