Abstract: A variable-displacement rotary fluid compressor comprising first and second rotary compressor assemblies including respective rotor units rotatable about axes aligned with each other and first and second drive shafts respectively carrying and rotatable with the rotor units, each of the compressor assemblies having fluid inlet and outlet ports; a fluid inlet chamber communicating with the fluid inlet ports of the two compressor assemblies and a fluid outlet chamber communicating with the fluid outlet ports of the compressor assemblies; a first clutch assembly comprising a drive member which is rotatable about an axis aligned with the axes of rotation of the rotor units and which is to be driven by a drive source, a driven member rotatable with the first drive shaft and coupling means to couple the drive and driven members together when actuated; and a second clutch assembly comprising a driven member rotatable with the second drive shaft and coupling means to couple the respective driven members of the first a

Abstract: A water pump includes a pump stand and a spout mounted on the stand for communication with its interior. A rotary drive shaft supported by the pump stand extends downwardly to an underground water supply. A pump rotor supported by the drive shaft is positioned within a stator communicating with the water supply, for cooperating to pump water to the pump stand and the spout. An input shaft applies a rotary driving motion to a gear box mounted on the pump stand, which in turn applies a rotary driving motion to the drive shaft. The gear box includes first and second bevel gears mounted on the input shaft in a spaced apart relation. A first clutch permits relative rotary motion in a first direction between the input shaft and the first gear while prohibiting relative rotary motion in a second direction. A second clutch permits relative rotary motion between the input shaft and the second bevel gear in the second direction, while prohibiting relative rotary motion in the first direction.

Abstract: An air compressor has a front side block through which extends a rotor shaft, and a front head is attached to the front side block and has a cylindrical portion spaced from the rotor shaft. A sealing device is interposed between the inner periphery of the cylindrical portion and the rotor shaft. A pulley is rotatably mounted on the outer periphery of the cylindrical portion by means of a ball bearing assembly. A ring-shaped interference plate is attached to the inner periphery of the pulley front end and the plate projects inwardly in axially-spaced relation from the ball bearing assembly to define a collection space along the inner periphery of the pulley front end in the region between the ball bearing assembly and the plate for collecting oil which leaks from the air compressor.

Abstract: An apparatus for controlling a driving force transmitted from a vehicle engine, via an electromagnetic clutch, to a compressor for a vehicle air conditioning equipment being provided with at least a sensor detecting the revolving rate of the compressor, and a clutch controller for providing a signal to disengage the electromagnetic clutch when the revolving rate of the compressor detected by the sensor is reduced below a prescribed reference revolving rate.

Abstract: A fluid pressure pump having a cylinder housing which contains a reciprocating position. A crankshaft housing attached to the cylinder housing and having a rotary drive shaft which turns an eccentric. A slide shoe pivotally connected to the reciprocating piston and normally held in frictional engagement with the eccentric by a split-ring spring. The split-ring spring ungirds the frictional engagement with the eccentric during a seizure of the piston.

Abstract: A hydraulic pump for attachment to a motor vehicle has a shaft extending freely through an attached hub on which an electro magnet is fixed and a pulley rotatably mounted. A clutch disc is fixed on the outer end of the pump shaft and is coupled to the pulley when the electro magnet is energized. The pump shaft is supported by an internal bearing and a bearing adjacent the clutch disc and fitted within the hub.

Abstract: The invention concerns a system for successively producing fluid flows at staggered values. This system includes for example an epicycloidal differential of which a shaft is coupled to an engine, and the other two shafts to two pumps respectively producing the maximum necessary flow and producing the minimum flow; to each pump is connected a brake; when the circuit, for example a jack, fed by this system becomes saturated, the pressure of the fluid sent by the high flow pump increases and reaches a threshold detected by a pressure detector-switch, the latter applies the brake which stops the pump and releases the brake of the other pump. The invention is applicable for example to feeding hydraulic jacks, in particular for turboshaft engines.

Abstract: A combination airless paint pump and air compressor wherein a prime mover drives an eccentric cam wheel within an oil reservoir housing. A piston, movably received within a housing bore is engageable with a periphery of the cam wheel to load an hydraulic column open to the piston cylinder for oscillating a paint spray pump diaphragm. A second piston member, received in a bore open to the housing, is engageable with the periphery of the cam wheel spaced circumferentially of the paint pump piston. The second piston is operatively connected with an air pump diaphragm. Selector means are provided to disengage, selectively, either one of the pistons from contact with the cam wheel whereby the unit can operate in a paint only mode, an air only mode or a combination air and paint mode.

Abstract: A scotch yoke radial compressor especially adapted for use in automotive airconditioners having a cast aluminum crankcase which is split along a plane axially passing through the center lines of the radially oriented cylinders. Each of the crankcase halves has a plurality of radially extending semicylindrical recesses which, when assembled, form the cylinders. Cylindrical cylinder liners are preassembled to the pistons and this assembly is then placed in one of the crankcase halves with the liners being received in their respective semicylindrical recesses. The second crankcase half is then secured to the first, again with the semi-cylindrical recesses overlying the cylinder liners. The distal ends of the liners are sealed by means of annular flanges which are clamped between the crankcase and the valve plate assemblies located at the ends of the cylinders.

Abstract: A hydraulic pressure producing system including clutch means located between an output shaft of a motor and a rotary pump arranged in a liquid and operated from outside. The rotary pump is driven only when the clutch means is engaged to obtain a discharge pressure.

Abstract: A compressor system which may be mounted for mobile use including dual power systems for driving the compressor. An electric motor is located in driving relationship to the compressor so that air is compressed when the rotor shaft of the motor is rotated. Rotation of the rotor shaft may be accomplished either by energizing the stator of the motor or by driving the rotor directly from an associated engine, coupled thereto by means of an electromagnetic clutch. If desired, the engine may also be utilized to drive a generator in order to provide electrical power to other devices. The control circuit may include safety interlocks which prevent energization of both the electric motor and the electromagnetic clutch simultaneously. Other safety devices may also be employed to disconnect power from the motor and the clutch, as necessary, if certain contaminants are sensed in the compressed air, to shut off the engine for over-limit conditions of temperature, air pressure, and the like.

Abstract: Disclosed is an apparatus for swabbing wells. A cup type swab and dump valve are carried on the same mandrel. The dump valve protects the apparatus from excessive fluid load and drag.

Abstract: An apparatus for protecting a compressor from breakdown, in the case where the compressor is arranged so as to be connected to a drive source by means of an electromagnetic clutch having therein an excitation circuit connected, at its one end, to electric power source, and at its other end, to a body of the compressor via a grounding lead wire, which is characterized in that the grounding lead wire is connected to the body of the compressor by means of an electrically conductive connecting member made of a material which is capable of melting under a thermal effect of the compressor when the compressor is overheated.

Abstract: The pump drive mechanism is driven by a wiper drive motor having a drive pin adapted to revolve in a circular path, while driving the wipers, and which is displaced along a generally radially directed path outwardly of the circular path, at a prescribed point thereon, when the wipers are moved to the park position. The mechanism has a rotatable drive cam, which is connected, via a cam follower, to reciprocate the piston rod of the pump. To facilitate installation, the drive cam carries a drive pin engaging portion designed to automatically engage the drive pin, after the first actuation of the wiper motor, regardless of the initial relative positions of the drive pin and drive cam. As a result, the necessity for positioning the drive cam with respect to the drive pin in a prescribed position during installation is eliminated.

Abstract: A refrigerant compressor for use in an automotive air conditioning refrigerating system is provided with an electromagnetic clutch and an AC electric generator assembled on the compressor. The electromagnetic clutch comprises a pulley rotatably mounted on the compressor housing to be driven by the engine of the car, a magnetic attracting surface, and a magnetic armature connected to a drive shaft of the compressor to be magnetically attracted to the magnetic attracting surface to selectively drive the compressor by the engine. The AC electric generator comprises a stator statically mounted on the compressor housing and a rotor mounted on the pulley. One of the stator and the rotor includes concentric magnetic pole pieces of permanent magnets or of electromagnets, and the other of the stator and rotor includes a coil member to which AC current is induced upon the rotation of the rotor together with the pulley.

Abstract: A pump such as a vehicle air conditioner compressor has a compressor shaft, a continuously engine-driven flywheel and means such as an electromagnetic clutch for selectively coupling the flywheel to the shaft to operate the pump. The flywheel also provides a permanent magnet field which field rotates with the flywheel and induces in the windings of a relatively stationary annular stator assembly an electric voltage in response to the rotating magnetic field. The pump shaft, annular clutch actuating coil, annular stator assembly, and permanent magnet flywheel are all generally concentrically disposed and in the order stated. The flywheel is driven any time that the engine is running thereby inducing a voltage in the stator windings and that flywheel also drives the exemplary compressor when the clutch is actuated.

Abstract: A turbomachine plant comprises a gas turbine, a synchronous electrical machine operable as a motor or generator, and a compressor all mounted on the same shafting and adapted to be coupled together for two optional operating modes. In a first operating mode, the gas turbine serves to drive the synchronous electrical machine for generation of electrical power and the compressor is not utilized. In the second operating mode, the synchronous electrical machine operating as a motor serves to drive the compressor for gas compression and the gas turbine is not utilized. When in the first operating mode the compressor is not disconnected by conventional clutch means from the gas turbine-synchronous electrical machine group but rather always remains connected to that group and is arranged by suitable valving so as to rotate in a vacuum type of operation with a power loss which is slight in relation to the gas turbine.

Abstract: The pump comprises a casing containing the pump shaft. The casing includes a lateral housing containing an axially slidable shaft. The slidable shaft carries a first pinion, while the pump shaft carries a second pinion which is firmly connected thereto. The slidable shaft is held in a first extreme position by a spring and can be axially displaced, against the force of the spring, to a second extreme position by pneumatic control means. The control means include a piston portion which forms part of the slidable shaft. One of the said positions is a working or pumping position in which there is a driving contact, e.g. between the sliding shaft and a driving shaft, between the first pinion and a driving pinion, or between a first and second pinion.

Abstract: A device for the adjustment of the injection timing of the injection pump of an automotive diesel engine, wherein the injection pump is actuated by the diesel engine via a clutch comprising two coaxially arranged clutch halves relatively rotatably by means of a vane about an angle determined by end stops.

Abstract: Pumping unit for extracorporeal haematic circulation, in artificial kidneys, comprising an adjustable speed motor arranged to drive a pair of pumps of the peristaltic type by way of a transmission system. The pumps are able to be coupled alternately to the transmission system by means of two respective electromagnetic couplings.

Abstract: A radial piston pump wherein the crank pin of a crankshaft engages with arcuate shoes at inner ends of radially extending pistons which are reciprocable in discrete cylinders. The outer end of each cylinder normally bears against the convex sealing surface of a discrete back support having in the sealing surface a pressure port for evacuation of pressurized fluid in response to outward movement of the respective piston. The cylinders are caused to move their outer ends away from full engagement with the respective sealing surfaces in response to inward movements of the respective pistons so that the chambers of the cylinders can draw fluid from the interior of the pump housing. The cylinders are caused to move substantially radially and away from the respective sealing surfaces due to frictional engagement between their internal surfaces and the external surfaces of the respective pistons.