Abstract: A pump for Whirlpool and Spa applications has a series wound universal motor which is directly coupled to a centrifugal impeller for operation in the range of 4000 to 9000 RPM. Variable speed of the pump is easily accomplished with a universal motor by varying the voltage to the motor.

Abstract: A compressed-air generator with adjustable pressure output and/or adjustable air throughput has a housing (11) and a fan motor arranged in the housing (11) below the top side (27) thereof. Further provided is an adjustment member which may be adjusted by way of a rotary knob (45) and which is provided for adjustment of the pressure output and/or the air throughput. In the compressed-air generator (8), a protective apparatus (47) at least partially covering the rotary knob (45) is provided, with the rotary knob (45) preferably being arranged on the top side (27) of the housing (11) (FIG. 1).

Abstract: Apparatus and method for pumping fluids from horizontal wells with a dip tube used without requiring a packer in the well. Gas is separated from the liquid phase ahead of the pump to avoid slug flow of gas into the pump. This increases the amount of oil that can be pumped from the well by avoiding shutdowns resulting from gas-locking of the pump.

Abstract: A concentrate supply assembly for a post-mix beverage dispenser includes a plurality of containers for concentrate with discharge openings through which concentrate may flow. A plurality of conduits are coupled to the discharge openings and are in fluid communication with concentrate disposed within the containers. A multi-channel linear pump is provided with a pump body or bodies, including bores disposed within the pump bodies, pistons operatively mounted within the bores for reciprocation and piston shafts connected to the pistons. An A.C. synchronous motor is connected to the piston shafts for imparting constant-speed reciprocal motion to the piston shafts and to the pistons disposed within the bores. Inlet ports are in fluid communication with the conduits and bores for supplying concentrate thereto during a reciprocal motion of the pistons in a first direction.

Abstract: A bulk getter-pump, consisting primarily of large beds of heated getter-material for use in pumping down a vacuum chamber to a rough vacuum. The pump is designed for applications now are served by turbo, cryo, diffusion, and ion pumps. The pump consists of a meshed cage filled with bulk getter-material pellets, which cage is housed in a housing coupled to a conduit of a vacuum chamber, so that the bulk getter-material is exposed to the interior of the vacuum chamber. In use, a roughing pump is first used to bring the chamber down to a pressure of about 2 torr, and then the bulk getter-pump of the invention is operatively coupled to the chamber for sorbing gases, in order to reach a desired vacuum.

Abstract: In a rotor of a pressure wave machine, rotor cells (2) are evenly distributed at its periphery, these rotor cells being intended to accept two gaseous media during operation for the purpose of compressing the first by means of pressure waves of the second medium. The rotor cells are arranged in such a way that they extend in a plane normal to the axis of rotation of the rotor (1).

Abstract: A fluid pumping assembly including a control valve mounted in a control valve boss having an inlet exposed to the elevated discharge pressure of the discharge chamber and an outlet exposed to the reduced pressure of the crank case. The control valve is responsive to pressure differentials between the crank case and the discharge chamber and provides a fluid path between the crank case and the discharge chamber to allow lubricating fluid from the discharge chamber to be injected into the crank case through the fluid path provided by the control valve under the influence of the pressure differential existing between the crank case and the discharge chamber. The control valve boss partially bifurcates the discharge chamber to form first and second reservoirs such that oil is disposed on either side of the control valve boss in the first and second reservoirs.

Abstract: A single acting, piston type pump comprises a pair of cylinders, and a pair of pistons mounted in respective cylinders for reciprocal movement within the cylinders. The pistons are interconnected with one another so that while one piston is moving upward in its cylinder, the opposing piston is moving downward. An inlet line and an outlet line is connected with the active end of each cylinder for drawing fluid into the active chamber when the piston moves upwardly, and expelling fluid through the outlet line when the piston moves downwardly in the cylinder. A cross-over channel is connected between the passive chambers of the cylinders so that the effective volume of the passive chambers remain constant as the pistons reciprocate within the cylinders. Because the volume of the passive chambers remain unchanged, there is less pressure on the seals surrounding the piston rods and a decreased likelihood of leakage.

Abstract: A transfusion pump includes a housing disposed to oppose a tube filled with a liquid to be supplied, a plurality of fingers mounted on the housing along a liquid supply direction to urge the tube, a drive shaft for pivotally reciprocally supporting the tube in a direction to urging the tube, cams engaged with the fingers rotatably supported by the drive shaft, a drive motor for sequentially driving the cams so that the fingers which are engaged with the corresponding cams sequentially urge the tube in the liquid supply direction, and a biasing member, arranged to be engaged with the fingers, for biasing the fingers to be in contact with the corresponding cams.

Abstract: A pump for sampling fluids from a pipe line has a very high volumetric efficiency. The pump has a plunger that substantially completely displaces the volume of the cavity within which it works. To prevent flow of the fluid from the pipe line to the sampling container when the pipe line pressure is higher than the sampling container, a floating plunger liner has a passage open to the pipe line pressure. The pipe line pressure will force the liner against the outlet valve if the pipe line pressure is higher than the collecting vessel pressure. When the plunger evacuates the cavity the pressure in the cavity will be greater than the pipe line pressure and the outlet pressure and will force the plunger liner downward to open the outlet valve to permit flow of the fluid from the cavity through the outlet to the collecting vessel. If the pressure is lower in the cavity than either the pipe line or the collecting vessel, there will be no flow from the collecting vessel but only flow from the pipe line.

Abstract: An aspirator fan is disclosed, which comprises a rotating shaft press-fitted in an impeller, a support member having an urging means and receiving one end of the rotating shaft for supporting the rotating shaft as a cantilever, and a shaft abutment member disposed in a casing and having a shaft abutment portion against which the opposite end of the rotating shaft is urged by the force of the resilient means. The aspirator fan is free of an alignment adjustment between the rotating shaft and bearings which is required in the casing of conventional aspirator fans. The shaft abutment member is structurally separated from the casing, so that even when the casing is deformed, a deformation of the casing has no effect on the rotation of the rotating shaft. The aspirator fan can, therefore, be operable with an improved reliability.

Abstract: There is disclosed an improved two-piece enclosure for a refrigerant compressor which is very simple in design and which effectively attenuates the sound produced by that compressor and, at the same time, requires a minimum amount of additional space and provides easy access to the compressor for service and the like. Two embodiments are shown, one with sound insulation on the walls of the container and another with sound insulation on the compressor.

Abstract: A pumping device controlling an amount of liquid passing through a length of tubing accommodated in the pumping device. The pumping device includes inlet and outlet valves located adjacent opposed sides of a tube deforming device. The valves are controllable for restricting the flow of liquid through the tubing, and the deforming device is such that the tubing is first deformed in one direction and then in another direction which tends to restore the original cross-sectional shape of the tubing.

Abstract: The novel controlled-flow lubricating system utilizes a casing that forms, in use, an enclosed oil well. At least one bearing is disposed inside the well. A shaft is journaled in the bearing. A pumping member is pressed onto the shaft adjacent to the bearing for rotation therewith. Upon rotation with the shaft, the pumping member forcefully injects lubricant from one side to the opposite side of the bearing, thereby flushing, cleaning and lubricating the bearing's engaging surfaces. The preferred pumping member is a circular impeller having a plurality of vanes facing an eccentric cavity in an opposite portion of the wall in the well. This eccentric cavity and the impeller intensify the flow of the recirculating lubricant between the well and the reservoir.

Abstract: A liquid pump apparatus is disclosed for pumping groundwater samples, contaminants or other fluids from a well, monitoring site, tank, vessel, or the like. The pump apparatus is applicable in systems including dedicated wellhead assemblies permanently installed at such wells or monitoring sites in order to minimize cross-contamination from site to site. Another application of the pump apparatus for recovery, collection and control system for cleanup of leachate or other liquid material or contaminated groundwater from a landsite is also disclosed. The pump apparatus according to the invention includes check valve means adapted to accommodate vertical, horizontal, non-vertical, or even inverted pump orientations, without requiring a high level of static head in order to function properly.

Abstract: A maximum-pressure plunger plump has, coaxial with its longitudinal axis, a compression valve and a suction valve. It has a sleeve that floats on a plunger. The sleeve rests on the end facing the head of the pump on an inset. the inset is provided with a seat area for the body of the suction valve and with suction channels. The sleeve has a bushing. The suction valve is in a form of a disk. It has a spring-loaded annular body that rests on the valve-seat area that the suction channels open out of in the insert in the pump head.The plunger's bushing (9) extends to th eend of the sleeve (7) that faces the head (2) of the pump with its face against the insert (12) and in that a sealing sleeve (15) that overlaps the area or seam of impact between the insert and the sleeve is accommodated in the flow channel between the bushing and the insert.

Abstract: A deep well water pump system has a temperature probe (17) in the air space above the top bearing (12), preferably in the oil inlet chamber (26), and provides means for signalling abnormal temperatures to warning and system shutdown means. A method of detecting bearing overheating indirectly by sensing the shaft temperature and/or the temperature in the enclosed air space above the bearing is disclosed.

Abstract: A packing is disclosed for piston and valve machine, an annular metal body (20) intended to be immobilized in the first recess by a clamping nut and, in its internal pheripheral face (24), an annular second recess (25), a gasket holding and stress ring (27) disposed in the second recess while being immobilized against the bottom thereof, a gasket (28) formed by at least two packing rings (29) split over the whole of their axial length and over their thickness, side by side, deformable radially and not axially and whose radial thickness is greater than the measurement complementary to the thickness of the ring to equalize the depth of the second recess, and a stop ring (35) in abutment againt the bottom of the second recess, on which the gasket bears.

Abstract: A diaphragm pump wherein the marginal portion of a contoured diaphragm is clamped between the cover and the case of the pump housing and the reinforced central portion of the diaphragm is reciprocated toward and away from the inner side of the cover by the connecting rod of a crank drive. The front side of the diaphragm and the inner side of the cover define a variable-volume pumping chamber which receives a fluid medium by way of an inlet and discharges the aspirated fluid medium by way of an outlet in the cover. The diaphragm has an intermediate portion which connects the central and marginal portions and is provided with an annular flexure zone including an annular protuberance at the rear side of the diaphragm.

Abstract: A homoplanar brushless electric gerotor (10) includes a housing assembly (32) defining a substantially closed cavity (52), a fluid inlet port (88). Inner and outer gerotor pump gears (72,74), are eccentrically disposed for relative rotation within the cavity whereupon a working fluid received at the inlet port at a low pressure is discharged from the outlet port at a high pressure. A plurality of alternatingly radially polarized circumferentially aligned permanent magnets (76) are carried by one of the pump gears for rotation therewith. A stator including windings (44) circumferentially distributed and axially spaced from the permanent magnets (76) electromagnetically interact therewith to effect their rotation upon the electrical energization of the windings (44) by a drive circuit (26).