Abstract: A liquid jet pump for moving a wide variety of material is described. The liquid jet pump is comprised of a nozzle assembly and a target tube, and defines a suction chamber. The nozzle assembly is configured to pull in gas, causing a gas bearing effect wherein a layer of gas surrounds the liquid jet flow exiting the nozzle assembly. The liquid jet passes through the suction chamber with minimal deflection, reducing cavitation and improving mixing as educted materials enter the suction chamber and combine with the liquid jet. The combined material is directed into the target tube, which preferably is designed to detach from the other components and is composed of abrasion-resistant material. The target tube absorbs the majority of wear, and provides ease of changing parts.

Abstract: A liquid discharging head which discharges a liquid through a discharging port utilizing an energy generated by producing air bubble including side walls which are to be brought into contact with a movable member to restrict upstream growth of a bubble, thereby stabilizing liquid discharge.

Abstract: A method for applying a lateral support load to a jet pump slip joint. The method includes positioning an ovalization device around the diffuser and actuating the ovalization device to apply a predetermined load to the slip joint which creates an oval deformation of the diffuser. The force applied by the ovalization device creates a plastic strain in the diffuser wall which permits the diffuser to maintain an oval shape, and an elastic strain in the wall of the inlet mixer. The elastic deflection of the inlet mixer which is restrained from its original shape applies a lateral preload force to the diffuser at the area where the diffuser has a reduced diameter due to the oval deformation. This lateral preload force maintains a rigid contact between the inlet mixer and the diffuser collar to prevent oscillating motion and suppress FIV.

Abstract: An oil pump includes an oil supply pump and an oil recovery pump disposed on an extension line of a crankshaft of an engine. One joint member is provided at an end portion of the crankshaft, and another joint member is provided at an end portion of a pump shaft. The two joint members are coupled to each other on the same axial line within a front cover of an engine. The two joint members have alternating concave portions and convex portions. The convex portions of the two joint members include inclined faces and opposing driving transmission faces. The inclined faces of the convex portions guide the convex portions into the concave portion of the opposing joint member, so that the two joint members are meshed with one another. The crankshaft side joint member is fastened together with an ACG rotor. An oil tank connected to the oil pump is disposed above and very close to the oil pump.

Abstract: A molecular drag vacuum pump configured for pumping a gas stream from an inlet to an outlet, the pump including a high-speed spinning disk having a channel formed in its edge, disposed within a housing. A passageway is formed on the inside of the housing adjacent the disk, and gas comes in contact with surfaces of the spinning disk in successive stages, conformable wipers being disposed adjacent the spinning disk to direct the gas stream to the successive stages. The disk can be powered by an integral motor, comprising permanent magnets associated with the disk and cooperating coils associated with the housing.

Abstract: In a blower in which an impeller (8), a motor yoke (11) and the like are attached to a shaft which is supported by bearings (4), (5), and a stator core (16) is arranged inside of the motor yoke (11), an annular groove (19) is provided at one end portion of the shaft (6) around its periphery and a central portion of the motor yoke (11) that is formed in a cup-shape is press-fitted and fixed to the annular groove (19). Since a zinc die-cast-made boss that has been conventionally needed may be dispensed with, the structure may be simplified and the assembling work may be performed without fail.

Abstract: A pumping apparatus for delivering water upwardly from a holding area and over a holding area bank includes a trailer having wheels and a trailer bed; a composite water drawing pipe including structure for telescoping from a shorter pipe transport length to a longer pipe deployment length to access water at lower levels in the holding area; a water drawing pipe movement mechanism including a mechanism for moving the drawing pipe between a transport position on top of the trailer bed and a deployed position substantially behind and angling downwardly from the trailer bed into water in the holding area. The composite water delivery pipe preferably includes a wider outer pipe and a narrower inner pipe, at least a portion of the narrower inner pipe being slidably retained within the wider outer pipe, the narrower inner pipe being mounted on an annular guiding carriage extending radially between the outer pipe and the inner pipe.

Abstract: A pump impeller having a central hub and circumferentially-spaced bottom vanes extending in a direction outwardly of the hub. An annular shroud surrounds the hub in outwardly-spaced relationship thereto and provides an impeller liquid inlet passage around the hub leading to the vanes. A permanent magnet motor rotor is mounted on the annular shroud. The rotor is used in a sump pump having an upper cylindrical filter that encloses a float switch for operating the pump motor.

Abstract: A fan assembly includes a shroud attached to a motor housing to prevent negative pressure from developing within the motor housing and prevent moisture from being drawn into drain openings. The assembly includes a fan, a motor, a motor housing, and a fan control. The motor and fan control are disposed within the motor housing. The motor housing includes drain openings to permit the motor housing to be assembled and to permit moisture to drain to the environment from the motor housing. The shroud is attached downstream from the fan such that the drain openings remain open to the environment.

Abstract: An electromagnetic control valve of a fast response compression volume control apparatus for a refrigeration cycle is provided which connects and blocks a pressure adjusting chamber of the compressor to and from a discharge chamber or a suction chamber such that the a differential pressure between at least one of a pressure in the pressure adjusting chamber and a pressure in the suction chamber and a pressure in the discharge chamber is maintained at a predetermined differential pressure value. The differential pressure is changed by changing the electromagnetic force of the electromagnetic control valve such that the discharge volume of the refrigerant is controlled and the compression volume becomes a predetermined one in a prompt action without a time delay when the electromagnetic force is varied.

Abstract: A magnetic pump comprises a front casing (1) for forming an interior pump space (2) and having an inlet (3) for drawing in a fluid to be pumped and an outlet (4) for discharging the fluid, a rear casing (6) for forming a cylindrical space (5) extending from the pump space (2), a supporting shaft (7) having a rear end supported by a rear end of the rear casing (6) and a front end facing to the pump space (2), and a rotator (10) rotatably supported by the supporting shaft (7). The rotator (10) includes a totally cylindrical magnetic can (13) having an inner circumference on which a cylindrical rotary bearing mounted and an outer circumference on which a driven magnet is mounted, and an impeller (14) secured on a front end of the magnetic can (13) and accommodated in the pump space (2) so as to rotate integrally with the magnetic can (13). A rear bearing (19) is located at a rear end of the rotary bearing (11) via a cushion member (18).

Abstract: A motor and fan structure 10 includes direct current motor assembly 18 having a stator assembly 20 including a flux plate 22 and permanent magnet structure 24 mounted on the flux plate 22. The flux plate 22 defines one end of the motor assembly and define a magnetic flux path of the motor assembly. The motor assembly also includes a generally cylindrical armature assembly 32 defining another end of the motor assembly. The armature assembly is radially wound with windings 40, and an outermost part of the armature assembly and at least a portion of the windings is exposed to the environment. The structure includes a fan 12 having a generally cylindrical hub 14 receiving and covering the outermost part and the portion of the windings of the armature assembly. The hub 14 has a plurality of blades 16 extending therefrom. Thus, the weight and axial length of the motor assembly can be reduced since no case is required to cover the armature assembly yet the armature assembly is protected by the fan hub.

Abstract: A head cover assembly for a two cylinder compressor is described. The head cover assembly is mounted over the compressor cylinders and includes a one piece valve plate with a pair of removable heads. The valve plate includes two substantially identical cylinder covers disposed over a pair of plate sections, thereby enclosing a volume above each plate section with a head installed. Each cylinder cover includes a divider wall which divides the enclosed volume of the cover into an intake volume and an exhaust volume. A pair of passageways provides communication between the cylinder covers connecting the exhaust volumes and the intake volumes.

Abstract: A method of ensuring adequate oil thickness for the bearings in a sealed compressor includes the step of monitoring the viscosity of a lubricant for the bearings. If the monitored viscosity drops below a minimum, then some control is effected to reduce the necessary bearing film thickness. In a preferred embodiment, an unloader valve is opened to reduce the load on the bearings.

Abstract: In the case of a reciprocating pump for a high pressure cleaning appliance including a pump housing in which there is disposed at least one pumping chamber having an inlet valve, an outlet valve and a reciprocating piston that projects thereinto in sealed manner, said pump housing comprising a pump block and a pump head which abut closely together at a interface, wherein the pumping chambers and/or the connecting conduits penetrate the interface in sealed manner and, in the region of the interface, accommodate inserts that are insertable into the pumping chambers and/or the connecting conduits from the interface, said inserts being fixed between the pump block and the pump head when in their inserted position, it is proposed that the whole construction be simplified by making the inserts themselves and the region of the pumping chambers and the connecting conduits in which the inserts are accommodated out of a thermally softenable synthetic material, and by connecting the inserts to the wall of the pumping ch

Abstract: An automated pump including a pulse generator capable of altering the output volume of fluid flow produced by the pump. The present invention is a vibratory pump including a pulse generator connected to a vibratory generator on the pump that is used to selectively control the amount of vibration created by the vibration generator. By increasing or decreasing the amount of vibrations created by the vibration generator, an operator can control the fluid flow output of the pump to fit the desired use for the pump.

Abstract: A reciprocating fluid pump includes a drive section and a pump section. The drive section has a pair of coils which may be energized to cause displacement of a reciprocating assembly. Each coil is a reluctance gap arrangement in which a magnetic circuit is interrupted by a gap towards which an armature of the reciprocating assembly is drawn when energizing current is applied to the coil. The reciprocating assembly includes an element which is extended into and retracted from a pump chamber during its reciprocating motion, causing fluid to be drawn into and expelled from the pump chamber. The pump is particularly well suited for use in cyclic pumping applications, such as internal combustion engine fuel injection. Cycle times in such applications may be reduced by appropriate control of the current waveforms applied to the coils.

Abstract: A pump having both a short stroke pumping mode and a long stroke pumping mode. The pump has two material cylinders, each with an attached hydraulic cylinder for operating a piston rod extending through both the material and hydraulic cylinders. The piston rods are driven by hydraulic fluid supplied to the hydraulic cylinders and are synchronized so that as one piston rod extends, the other piston rod retracts. The piston rods draw material into the material cylinders when retracting, and pump material out of the material cylinders when extending. To pump in a short stroke mode, a diverter valve is placed between the hydraulic pump and the hydraulic cylinders which diverts an amount of hydraulic fluid to the cylinders, causing the hydraulic pistons to only be extended about half the length of the hydraulic cylinder.

Abstract: The invention relates to a friction vacuum pump (1) containing at least one turbomolecular pump stage (6, 7), a screw pump stage (11, 12) connected to the delivery side of the pump, and a filling stage (24) arranged between the turbomolecular pump stage (6, 7) and the screw pump stage (11, 12). According to the invention it is proposed that said filling stage (24) be configured as a centrifugal stage in order to simplify the construction thereof.

Abstract: A peristaltic pump for pumping a liquid, such as a juice concentrate, includes a rotor assembly attached to a housing, a band attached to the housing and surrounding at least a portion of the rotor assembly A tube is positionable between the band and the rotor assembly. The position of the band can be adjusted relative to the rotor assembly to adjust the pressure applied to the tube by the band and the rotor assembly. The rotor assembly includes rollers therein for pumping concentrate from a reservoir by drawing a vacuum.