Abstract: In a high volumetric efficiency compression machine that can be used as a compressor, pump, or actuator, a compression chamber is formed by a movable body and the inner wall of a casing. A discharge valve is formed in the casing, and communicates with the compression chamber. Two intake valves are formed in the casing, communicate with the compression chamber and are arranged symmetrically with respect to the axial direction of the discharge valve. A rod transmits reciprocation to the movable body.

Abstract: The invention pertains to an air pump for a natural mineral water bottle. The pump comprises a cover member, a bellows member disposed within the cover member and a stopper member fixed to the mouth of the bottle by screwing a locking nut so that the bottle may be stood up and the supply of water can be freely adjusted at user's option.

Abstract: A liquid pump is disclosed having a center block containing inlets and outlets for liquid to be pumped and air to operate the pump with associated valves for liquid and air. A pair of opposed cylinders are provided on opposite sides of the center block and each containing a collapsible bellows connected to a sleeve forming a piston with the liquid being pumped in the chamber within the bellows. Push rodes extend from one piston to the other so that the piston pumping liquid out pushes the other piston to fill with liquid. The bellows have conbolutions of selectively varying wall thickness, and tapered single or dual compression seals are provided where the bellows are joined to the center block. An inflow conical valve and an outflow shuttle valve are provided for each cylinder, and vent tubes are provided to cool the bellows and to actuate the air valve at the end of the piston stroke. An encapsulated sheet member is provided in each cylinder.

Abstract: A diaphragm pump with a flat diaphragm which is held between the face surface of a pump head and the corresponding face surface of a hydraulic block is improved in that the annular clamping region has an angling step such that the clamped-in diaphragm is bent in its outer annular border region. In this way, a sealed tightness is achieved over long time periods, as well as inducing a uniform diaphragm tension which effects performance of the pump advantageously. Inventive valve designs are provided which allow removal for cleaning from outside the assembled pump and also allows manual opening of the valves for unclogging. An efficient design is provided for a pump head.

Abstract: A material-feeding container is disclosed for two-cylinder thick-matter pumps having feeding cylinders that open into the container. Inside the container is arranged a switchable guide-tube linked to the feeding line and alternatively movable between the openings of the feeding cylinders. A cleaning and servicing opening that can be closed with a cap provided with an agitator is arranged in each side wall. When the closing cap hinged on the material-feeding container is opened, the agitator pivots out of the container through the servicing opening, making the switchable guide-tube and its wearing parts freely accessible from the outside.

Abstract: A pump assembly used in conjunction with a fluid delivery set is disclosed which includes a tube slot into which the outlet tube of the fluid delivery set is intended to be mounted. The invention includes a retention member which is pivotally attached to the pump adjacent the point at which the outlet tube exits the tube slot of the pump assembly. The retention member includes a pivoting flat elongate arm which is secured to the pump by a pin and designed to rotate from a first position wherein the tube can be placed into the tube slot, and a second position wherein the tube is secured in the tube slot by the arm. The arm also has formed thereon a tab member which includes a tapered guide edge for ensuring that the tubing is forced into a secured position within the tube slot when the arm is pivoted thereover.

Abstract: A refrigerant compressor is disclosed having pistons that reciprocate in radially arrayed cylinder bores of a cylinder block. A discharge chamber is formed in the compressor. A valving means including a timing plate is positioned within the discharge chamber, and alternately covers and uncovers the compressor outlet port. The timing plate includes spaced variable flow orifices to thereby attenuate the pressure pulsations that occur during the operating cycle. The timing plate is a circular disc rotatably connected to the end of the compressor drive shaft. Each flow orifice is pear-shaped and positioned with a constant radial and circumferential spacing for synchronization with the cylinders.

Abstract: A fluid compressor is provided which includes a closed case having a case body with an open end and cover for closing the open end of the case body to house drive compressor sections and therein. The compressor section has a cylinder having an axial line and both ends located on sucking and discharging sides thereof, rotated by the drive section, a rotating body provided with an axial line offset to the axial line and a spiral groove formed on the outer circumference thereof at such a pitch that becomes smaller and smaller as it comes from the sucking side end thereof nearer to the discharging side thereof, and arranged to contact a part of the outer circumference thereof with the inner circumference of the cylinder.

Abstract: A centrifugal pump comprising a housing having an open end covered by a rear cover and a front cover, overlapping each other. A fixed central shaft is disposed along a central rotation axis of the centrifugal pump with a driven magnet member disposed therearound to rotate with respect thereto. The driven member is enclosed by an enclosure which is an extension of an impeller disposed within an interior space defined between the rear and front covers. The driven member is driven by a driving magnet member in fluid isolation from the driven member. The driving member is mechanically connected to a motor and actuated thereby.

Abstract: The present invention has for its object to provide a swash plate type piston pump/motor which is simple in construction and small in size and which enables a swash plate to be tilted surely. The swash type piston pump/motor is arranged such that a swash plate receiving surface (1) formed in a housing (1) is inclined by a predetermined angle relative to the axis (2) of a rotating shaft (2) so that even when the angle of tilting of the swash plate is increased the distance from the axis of the rotation shaft to the center (12) of a ball (12) which serves as the center of swing of the swash plate can be reduced.

Abstract: An hydraulic centrifugal piston motor having mulitple piston circumferentially disposed at right angle to shaft axis, having a rotational power moment that occurs twice each revolution for each cylinder. The power stroke for each cylinder would occur for a duration of 90 degrees twice during each 360 degree operating cycle. Hydraulic input is applied to opposing pairs of cylinders and overlap of successive power strokes provide rotational balance and cancels net reaction forces applied to the bearings. Another feature of the motor would be the particular design of the power transfer device. The thrust of the power transfer device is applied axially to the drive shaft providing a smooth transfer between the hydraulic input power and the mechanical output power.

Abstract: Described is a bent axis type variable displacement hydraulic machine which is provided with a hydrostatic radial bearing 23 and/or a hydrostatic thrust bearing 28 to support hydraulic reaction forces exerted on a cylinder block 8. The hydraulic machine is arranged to draw out a high oil pressure corresponding to the tilt angle of the cylinder block 8 through a variable throttle means 34, 37, 51 or 54 or through a control valve 77 or 78, and to supply the pressure to the hydrostatic radial or thrust bearing 23 or 28 thereby imparting to a hydrostatic supporting capacity commensurate with the tilt angle of the cylinder block 8 to support a rotational shaft stably while holding oil leaks to a minimum.

Abstract: A rotary type of peristaltic pump having the rotor member mounted on one side thereof and including a swing arm rotatably mounted along the side of the peristaltic pump such that the swing arm is movable between a fluid delivery set loading open position and a pair of closed positions which automatically align and stretch a portion of the fluid delivery set around the rotor member to allow for the convenient loading of the fluid delivery set on the peristaltic pump and to ensure that the fluid delivery set is properly aligned about the rotor member of the peristaltic pump. A latch member on the swing arm provides a secondary position wherein the flow of fluid through the fluid delivery set is prevented.

Abstract: A fuel injection pumping apparatus for supplying fuel to a compression ignition engine has a low pressure pump which supplies fuel to a high pressure pump by way of a throttle. The high pressure pump has a piston for varying the timing of delivery of fuel. A first fixed orifice connects the outlet of the low pressure pump to the cylinder containing the piston and a second fixed orifice connects the cylinder with a drain by way of a variable orifice. In parallel with the second fixed orifice is a bypass valve including a valve member responsive to the pressure applied to the piston and which with increasing pressure opens to allow fuel to escape through a further fixed orifice from downstream of the second fixed orifice.

Abstract: A radial compressor for a vehicle air conditioning system includes a cylinder block having an array of radially arranged cylinders. Each cylinder defines a piston receiving bore that is closed by a discharge valve assembly. A piston assembly is received for reciprocation in each bore by a drive assembly that is operatively connected to the engine of the vehicle. The compressor also includes an annular discharge chamber defined between the periphery of the cylinder block and an outer cylindrical shell. Dams extend into the discharge chamber adjacent the side of the bores closest to a single discharge port; that is downstream of the bores. The dams act as baffles to reflect incident pressure waves to reduce gas pulsations, vibrations and noise.

Abstract: A radial piston engine is provided having recesses in the area of movement of the rollers, adapted to receive roller sections on both roller end faces. For guiding the roller end faces, oppositely located guide surfaces are milled in the cylinder block for said rollers.

Abstract: An axial piston pump apparatus includes a rotary cylinder barrel with plural cylinder bores in each of which a slidable piston is arranged. Each piston is rotatably held at one end with a piston support synchronously rotatable with the cylinder barrel. The piston support rotates in a plane inclined to the cylinder barrel, while each piston reciprocally moves in the corresponding cylinder bore to perform suction/discharging of a fluid. Two of the pistons come into surface contact with the corresponding cylinder bores; and the end of these pistons are held respectively in the piston support for radial movement to serve as drive pins for transmitting torque between the cylinder barrel and the piston support. During operation of the pump apparatus, the one end of each drive piston radially moves in accordance with rotation of the piston support, thereby preventing the drive pistons from inclining to the corresponding cylinder bores and appropriately maintaining surface contact between them.

Abstract: Disclosed is a two cylinder water well pumping system which uses the wind as a primary driving force with an alternate electric motor drive for use when the wind force is not adequate. The wind drives a square wheel turbine which in turn drives a swash plate which provides a cam surface which then drives a semaphore assembly directly or indirectly connected to sucker cables in turn connected to two pistons carried, respectively, in two cylinder sleeves. The inclined angle of the swash plate alternately drives the pistons to pump water from a well into a storage tank also serving as a mainmast supporting said turbine. In an alterenative embodiment, an electric motor is connected to drive an osillatable bar on a mechancial relay. The oscillatable bar is connected by cables to the semaphore assembly, and may be disconnected from the semaphore assembly by a solenoid. In this embodiment, the sucker cables are connected to the rockable bar in the mechanical relay rather than to the semaphore assembly.

Abstract: A method and an apparatus for control of the movement of a control piston an air control valve for a compressed air-operated double diaphragm pump, wherein the control piston is moved between the end positions in a control cylinder having inlet bores and outlet bores for the compressed air. The control piston is adjusted by a control medium. The method includes initially maintaining the control piston in an end position by a holding device against the pressure of the control medium for a predetermined period of time or until a counterpressure reaches a predetermined pressure level. Subsequently, the control piston is moved with a pushing force which is always greater than the maximum frictional forces. The holding device operates independently of the movement of the pump diaphragm, preferably using elastically, magnetically, or electromagnetically operating structural elements. The control cylinder includes separate connections for a control medium for moving the control piston.

Abstract: A slant plate type compressor including a compressor housing having a cylinder block is disclosed. A plurality of cylinders are formed around the periphery of the cylinder block and a piston is slidably fitted within each of the cylinders and is reciprocated by a drive mechanism. A crank chamber is formed between the cylinder block and a front end plate of the compressor housing. The drive mechanism includes a drive shaft rotatably supported in the compressor housing, a rotor coupled to the drive shaft and rotatable therewith, and a coupling mechanism for drivingly coupling the rotor to the pistons such that they rotary motion of the rotor is converted into reciprocating motion of the pistons. The coupling mechanism includes a plate having a surface disposed at a slant angle relative to the drive shaft. The slant angle changes in response to a change in pressure in the crank chamber to change the capacity of the compressor.