Abstract: In a jet pump, the suction pressure (Po) generated may be kept constant within predetermined limits and times by varying the pressure ratio f(p) providing a prescribed value for the pressure ratio f(p) is determined by computer-aided iterative changing of an existing value of the pressure ratio f(p) using an algorithm and a measured value for the pressure (Pe) of the delivery fluid.

Abstract: A compressor of a type in which a plurality of pistons reciprocate in cylinders, the improved compressor in which a mechanism is provided to reduce pulsating of suction pressure in a cylinder head. The inside of the cylinder head is partitioned into a first low pressure chamber and a second low pressure chamber and a high pressure chamber by means of a partitioning means. The first low pressure chamber is communicated with a suction opening formed on the cylinder head, and the second low pressure chamber is communicated with a plurality of suction holes formed on a low pressure chamber are communicated by means of the suction communication hole formed on the partitioning means, and each of the suction communicating holes is positioned at an equal distance from the two suction holes, and the phase difference is provided on the pulsating produced by the passing of the gas through the suction opening.

Abstract: A device for the automatic connection of a vehicle to the cable of a continuously moving cableway comprises a clamp which is constituted by two jaws, an inner one and an outer one, carried by the upper end of the vehicle suspension system, and which is arranged to close automatically to engage the cable under the action of resilient member and a cam located at each station for automatically and opening the clamp simultaneously loading the resilient member, so as to cause the temporary unhooking of the vehicle from the cable on its arrival at the station and the closure of the clamp on the departure of the vehicle from the station. The outer jaw is carried by an operating lever hinged at one end to a support member and having its other end subject directly to the action of the cam located at each station.

Abstract: Compressed air driven vacuum pump assembly wherein the energy contained in compressed air is used to create a vacuum flow within a housing unit. Preferably, the modular housing unit includes a series of axially aligned air nozzles to provide a substantially straight air flow path through the housing unit. A series of axially aligned vacuum structures provide a vacuum flow path that is substantially parallel to the air flow path. The capacity of the vacuum pump is increased by elongating and enlarging the air and vacuum flow paths by means of the addition of modular housing units. The vacuum pump assembly includes an external muffler to dampen the air flow as it exits the housing unit.

Abstract: Two golf practicing aids are disclosed, one for preventing the improper shift of a golfer's rear leg and the other for preventing the improper swaying of the golfer's hips. One of the aids includes a frame having a horizontal base, a pair of spaced apart standards at one end of the base, and an elongated arm extending from a central portion of the base and intermediate the standards. The arm is pivotably mounted on the base and may be adjustably attached to the standards at selected vertical locations. The free end of the arm has a yoke member against which the golfer may place his or her rear leg, and the base has gripping members for securely attaching to the ground. The other aid includes a belt having a U-shaped strip member projecting from the side thereof facing the forward direction in which the golfer is to hit the golf ball, the strip acting as a slideway along which a clip may slide.

Abstract: An air compressor pressure adjustment device designed such that any values between two set points are determined and used as first and second standard values. When the air pressure in the reservoir decreases to the first standard value the air compressor is driven at a low speed. When the air pressure increases in the reservoir and reaches an upper limit set point the compressor is turned off. When this air pressure decreases to less than the lower limit set point, the air compressor is started once more.

Abstract: This invention relates generally to the sensing of phenomena using heat sensitive devices. More particularly, the invention relates to an improved method and system wherein the ratio of the dissipation coefficients of a pair of electrically heated matched temperature sensitive devices is detected, which method and system are insensitive to variation in ambient temperature.

Abstract: In an inlet region or chamber of an end bell of a liquid-ring pump, an injection nozzle is provided for replenishing the liquid in the rotating ring of the machine.The injection nozzle is arranged in the vicinity of a suction slot provided in a control disc of the liquid-ring pump. The injection nozzle is disposed above a minimum liquid level extend when only gas is being transported by the pump and below a maximum liquid level extant when a mixture of both gas and working liquid is being pumped.

Abstract: The present disclosure is directed to a water/air pumping system comprising essentially a substantially flat primary reservoir, a header tank and a pump. At least one reciprocating piston is powered through the tank. Eccentric drive cams are directly connected to the motor driven shaft and are connected to drive the pistons to pump water or air from the reservoir into the tank. A water and or air supply connection is horizontally connected to the reservoir and is provided with a water/air control valve proximate the reservoir. A tank discharge connector is connected to a water or air service system through the side wall of the tank externally thereof, above the motor driven shaft and its direct drive connection with the pistons for lubricating the driving mechanism. An air inlet valve is situated in the external wall of the primary reservoir beneath the piston intake so that the pump may pump either air or water.

Abstract: A liquid ring machine, in particular, a liquid ring pump comprises a control disk having an opening for a vane wheel shaft and first and second partial ring slots spatially separated from each other and located between an inner edge of a suction slot and the vane wheel shaft opening and an inner edge of a pressure slot and the vane wheel shaft opening of the control disk respectively. An opening to the first partial ring slot from an end bell of the machine is provided at a narrow end of the suction slot for exclusive feeding in of a cold portion of operating liquid. An opening to the second partial ring slot from the end bell is provided between the wide end of the suction slot and the beginning of the pressure slot for exclusive feeding in of a warm portion of operating liquid. The condensation of liquid especially in the vicinity of the suction slot is improved while undesirable evaporation of operating liquid is reduced.

Abstract: A pumping apparatus is formed by a flexible, metal wall structure surrounding and defining a hollow interior chamber and with a mechanism to compress and expand the structure to create a pumping action through an opening to the chamber. The pumping apparatus forms part of an overall system particularly adapted for pumping abrasive liquids.

Abstract: A jet pump system including a pump body having a nozzle carrier, a pump housing, and a cross-over housing connected in axially alignment. A flow discharge housing extends from the cross-over housing up to near the nozzle carrier. An injector nozzle having a cylindrical injection bore is axially directed into the discharge housing. A mixing tube is carried by the discharge housing which has a mixing bore in alignment with the injector bore. A funnel shaped flow intake throat merges through a mixing throat into the mixing bore. The cross-over housing is formed with large flow windows for discharge of the pumped mixed fluid through equally large windows, formed in a tubing seating sub into the annulus between the tubing and casing of a well. The assembly is equipped to be pumped down into operating position and pumped back to the earth's surface.

Abstract: A rotating drum pump having a plurality of fluid driven pistons includes a pump housing with an enclosed rotating drum, and connection openings for a supplied and discharged driving fluid and for a supplied and discharged pump flow located in end walls of the housing. The drum comprises several cylinder spaces arranged axially in pairs and concentrically arranged inside the envelope surface thereof. In the cylinder spaces, which are arranged axially in pairs and are separated by a partition, there are arranged a drive piston and a pump piston interconnected by a piston rod passing in a sealed manner through the partition.

Abstract: A probe is mounted on a water submersible pump housed within a transformer vault. The probe will extend into any water which accumulates in the bottom of the transformer vault enabling a conductive path to be established through an appropriate electric circuit to the pump motor to permit operation of the pump so that the water which is on the bottom of the vault can be safely pumped from the vault. As the water level falls as it is pumped, oily fluids, which are immiscible in the water and will normally rise to a level above the water level in the vault, will come in contact with the probe to form an electrical insulator to inactivate the circuit to disconnect a power source from the pump motor.

Abstract: The invention relates to a pump assembly having a pump with reversible and adjustable controls, the pump controls having a neutral nonflow position and varying positions in opposite directions for effecting corresponding varying rates of flow in the opposite directions. The pump controls include a control valve for the adjusting function which is cooperable with resetting apparatus.

Abstract: A piston type compressor having a cylinder block in which a plurality of compression chambers permit a plurality of pistons to be reciprocated so as to compress a refrigerant sucked from a suction chamber formed in an end housing into the compression chambers through suction ports of a valve plate openably closed by a plurality of suction reed valves. The compressor also has a valve stop construction for stopping the movement of the suction reed valves when the valves reach the opening position thereof apart from the valve plate. The valve stop construction includes recessed seats formed in an axial end face of the cylinder block so as to permit a portion of the free end of respective suction reed valves to be first seated on the recessed seats, and to permit the remaining portion of the free end of the suction reed valves to be stably seated on the recessed seats. The gradual stoppage of the suction reed valves suppresses vibration of the valves and prevents noise.

Abstract: The former art provides multi-stroke hydrostatic motors, which perform at a single revolution of the rotor multiple inward and outward strokes of the pistons. A high torque was thereby obtained. The invention discovers, that the know multi-stroke motors have still relatively short piston strokes in relation to the diameter of the rotor.The invention increases the efficiency of multiple stroke motors by the provision of control communications to control the flow of fluid pressure into pockets open to the piston faces and cylinder walls, whereby the torque of the rotor is transferred from the pistons to the cylinder walls by high pressure fluid in the pockets. The invention also provides radial guide extensions to enlarge the stroke of the pistons in a given size and weight of the device combined with the partial movement of the pockets along the guide extensions.

Abstract: An improved variable displacement mechanism for a slant plate type compressor, such as a wobble plate type compressor, which increases the cooling efficiency of the compressor is disclosed. The variable displacement mechanism includes a passageway to allow communication between the suction chamber and the crank chamber, and a valve control mechanism for controlling the opening and closing of the passageway. The valve control mechanism includes a first valve control device with a first valve element which opens and closes a hole linking the suction chamber and the crank chamber. The first valve control device acts in accordance with the pressure within its interior space. The valve control mechanism also includes a second valve control device which controls the interior pressure of the first valve control device. The second valve control device is responsive to the actual operating conditions of the compressor.

Abstract: In a rotary compressor for refrigeration and heat pump systems with an integrated drive motor on the high-pressure side, the operating medium will flow over the drive motor. During operating of the rotary compressor gas pulsations/pressure pulses will occur on both low-pressure and high-pressure sides. In order to suppress these pressure pulses on the high-pressure side one or more chambers with different volumes are provided, joined by channels between the discharge opening and the drive motor.

Abstract: A downhole pump of the jet type is placed below the fluid level in a wellbore and is used to produce fluid from the wellbore by employment of a power fluid source located above the surface of the ground. The power fluid flows downhole to the pump and through the jet pump assembly to cause a pumping action. The jet pump includes a suction chamber formed about a nozzle assembly. The nozzle assembly is spaced from a venturi throat. The venturi throat diverges in a direction away from the nozzle. The nozzle is located close to the bottom of the pump adjacent the formation fluid inlet at a position which precludes contamination thereof with debris which may otherwise fall downhole into the nozzle. The power fluid exits from the nozzle and enters the inlet of the venturi, causing produced fluid to be pulled into the throat entrance and mixed with the power fluid.