Abstract: The invention relates to turbo molecular pumps enabling high pumping speed. The disclosure suggests using one or more cage-like rotor stages to optimize pumping speed on vacuum systems with low gas flows and low ultimate pressures. This allows for a smaller motor as well as smaller overall form factor and makes it well suited, in particular, for compact mass spectrometers and desk-top mass spectrometers.

Abstract: Methods and systems for controlling pressure washer devices are provided. Pressure washers comprising at least one control unit and the ability to regulate functions of at least an engine of a pressure washer are disclosed. A control unit receives inputs from a user or various sensors provided in communication with the control unit, and is further capable of outputting a signal based on the inputs, the output signal operative to maintain or control the operating functions of an engine, pump, or motor.

Abstract: A cam driven compressor includes a cam coupled to a plurality of cylinder and piston assemblies. Each cylinder and piston assembly comprises a piston located and movable within a respective cylinder. Each cylinder has a cylinder head. The compressor comprises a housing defining a cavity configured to receive a portion of a source gas from one or more of the cylinders in order to maintain a positive gas pressure within the cavity.

Abstract: A disclosure pertains to a reciprocating pump configured for pumping fillers or aggregates or cementitious material and the like.

Abstract: A linear compressor is provided that may include a cylinder which defines a compression space for a refrigerant and into which a piston that reciprocates in an axial direction may be inserted, a frame in which the cylinder may be accommodated, a discharge valve that selectively discharges the refrigerant compressed in the compression space for the refrigerant, a spring assembly coupled to the discharge valve, a discharge cover on which the spring assembly may be seated and having a discharge space through which the refrigerant discharged through the discharge valve may flow, and a first gasket seated inside of the discharge cover to support the spring assembly and attenuate vibration during an operation of the discharge valve.

Abstract: A compressor having a torque load reducing unit to move a center of weight to which a gas force is applied is provided. As the torque load reducing unit is formed at an oval-shaped roller, a distance between a rotation center of the roller and an operation point to which a gas force is applied is shortened. This may reduce a torque load to the roller, and may enhance a compression efficiency.

Abstract: A compressor may include a shell. A compression mechanism may be disposed within the shell. A drive shaft may be disposed within the shell and drivingly engaged with the compression mechanism. A motor assembly may be drivingly engaged with the drive shaft and may include a rotor and a stator. A plurality of magnets may be disposed within the rotor and may cooperate with the stator to create an electromagnetic field between the rotor and the stator. A counterweight assembly may be secured to the drive shaft and configured to dynamically balance the compression mechanism and secure the plurality of magnets within the rotor.

Abstract: An inner gear includes: sliding surface parts that are provided annularly at an outer peripheral part including a plurality of outer teeth on both sides of the inner gear in its axial direction and that slide on a pump housing; recessed parts that are respectively provided radially inward of the sliding surface parts to respectively form fuel chambers, into which fuel flows, between the recessed parts and the pump housing; and a communication hole that communicates between the recessed parts. The inner gear further includes an inclined surface part that is provided at an edge portion of a communicating edge portion on a rotation advance side of the inner gear, to avoid an adjacent part adjacent to an inner peripheral edge portion of each of the sliding surface parts and that is inclined further toward a rear side in a direction to a central part of the communication hole.

Abstract: A pump, including: inner gerotor; a crankshaft; an outer gerotor; an inlet assembly with inlet ports; an outlet assembly with outlet ports; and magnetic actuators. The inner gerotor includes lobes and a central opening. The crankshaft: passes through the central opening; is rotatable about an axis of rotation; and includes a first longitudinal axis not co-linear with the axis of rotation. The outer gerotor includes recesses. The magnetic actuators are sequentially energized to create magnetic fields to displace the inner gerotor with respect to the crankshaft to: displace a first lobe out of a first recess and draw fluid through an inlet port into the first recess; and displace a second lobe into a second recess and expel second fluid out of the second recess and through an outlet port.

Abstract: A magnet module is disclosed. The magnet module includes a sintered magnet structure, a magnetic permeable casing and a fixing member. The sintered magnet structure is disposed in the magnetic permeable casing. The fixing member has a plurality of locking units, and the sintered magnet structure and the magnetic permeable casing are fixed by the locking units of the fixing member.

Abstract: A cylinder head assembly for a compressor according to the present disclosure includes a valve plate and a cylinder head. The valve plate is configured to mount to a mounting surface of the compressor. The valve plate includes a suction chamber, a suction passage providing fluid communication between the suction chamber and a cylinder of the compressor, a suction valve seat through which the suction passage extends, and a discharge passage extending through the valve plate and defined by a discharge valve seat. The cylinder head at least partially covers the valve plate and defines a discharge chamber that is in selective fluid communication with the cylinder via the discharge passage. The cylinder head and the valve plate are formed together as a unitary body.

Abstract: A control device includes a plurality of sound reducing parts that is operated individually, when a predetermined condition for operation is met, at each of a plurality of timings when an operating sound is generated as a result of a movement of a valve body, in one open-and-close period, and that reduces the operating sound, at each of the plurality of the timings, by changing a period of energizing an electromagnetic part to an increase side relative to a normal time, an upper limit determination part that determines whether a required period of energizing the electromagnetic part in the one open-and-close period exceeds a predetermined upper limit value, when all the plurality of the sound reducing parts are operated, and a selectively operating part that selects and operates one or more of the plurality of the sound reducing parts to an extent that the required period of energizing does not exceed the upper limit value, when the upper limit determination part has determined that the required period of ene

Abstract: Provided is a linear compressor comprising a cylinder, a piston, a cylinder shell, a linear motor stator, a magnetic levitation bearing and a mover. One end of the cylinder shell is sleeved on the cylinder, and another end of the cylinder shell is provided with a mounting cavity communicating with the cylinder cavity. A cavity wall of the mounting cavity is respectively provided with a stator mounting groove and a protrusion in a circumferential direction thereof. The linear motor stator is mounted in the stator mounting groove. The magnetic levitation bearing is disposed on the cavity wall of the mounting cavity. The mover includes a mover rod and a magnetic member disposed on the mover rod, and the mover rod is connected with the piston. The use of magnetic levitation bearing can avoid mechanical friction caused by direct contact of the mover with the linear motor stator.

Abstract: A fuel pump includes a fuel pump housing with a pumping chamber; a pumping plunger which reciprocates within a plunger bore; and an inlet valve. The inlet valve includes a valve body having a valve body bore; an inlet passage; and an outlet passage. The inlet valve also includes a check valve which moves between a seated position and an unseated position, wherein the seated position prevents flow through the outlet passage into the valve body bore and the unseated position permits flow through the outlet passage such that the valve body bore is in fluid communication with the pumping chamber. The inlet valve also includes a valve spool which moves between a first position where the valve spool maintains the check valve member in the unseated position and a second position where the check valve member is able to move to the seated position.

Abstract: An apparatus and method for orienting a guide vane carrier relative to a turbine casing. The apparatus has a guide device with a first region and a second region, wherein the first region is arranged in a recess of the guide vane carrier and the second region is arranged in a recess of the casing. The second region of the guide device has a guide channel with a first internal thread, wherein a first adjusting element with a first external thread is arranged in the guide channel. The first external thread can be screwed together with the first internal thread. The first adjusting element can be arranged in the guide channel such that, when the guide device is supported against a support surface of the recess, a force flow runs through the first adjusting element from the recess to the guide device.

Abstract: A scroll compressor includes a compression mechanism having fixed and movable scrolls forming a compression chamber, a motor to drive the movable scroll, a drive shaft, a casing, a housing accommodated inside the casing, and a floating member supported by the housing. The casing accommodates the compression mechanism, the motor, and the drive shaft. The floating member can be pushed toward the movable scroll by a pressure in a back pressure space formed between the floating member and the housing. The floating member may include a plurality of supported portions arranged circumferentially at three or more locations, and the housing may include a supporting portion supporting the supported portions. Alternatively, the floating member may include a body member and an outer peripheral member separate from the body member, the outer peripheral member mounted to an outer periphery of the body member, and the housing supports the outer peripheral member.

Abstract: A diaphragm pump has: a housing; a piston; a shaft; a rolling diaphragm, which is configured so that a lid portion reciprocally moves integrally with the piston; a driving device, which can convert rotational movement of a motor section to linear movement, and output the linear movement from an output axle to the shaft; a guiding member; and a restricting mechanism. The guiding member is placed on another axial end side of an interior of the housing with respect to the piston, attached to the housing, and able to guide the shaft movably in the axial direction. The restricting member is disposed in the housing and between the guiding member and the shaft, and able to restrict rotation of the shaft about the axis while allowing reciprocal movement in the axial direction.

Abstract: A circulation pump assembly, with a wet-running electrical drive motor (4), includes a pump casing (6) as well as a motor housing (22) which is connected to the pump casing (6). The motor housing (22) is a combined stator and electronics housing that accommodates a stator (18) of the drive motor (4) as well as motor electronics (34). The motor housing (22), at a first axial end (24) facing the pump casing (6), is closed by an air gap sleeve (16) of the drive motor. The motor housing (22), at a second axial end (26) which is away from the pump casing (6), includes an opening (42) closed by a cover (28). An interior of the motor housing (22), in a region adjacent the first axial end (24), is filled with a potting mass (40) surrounding the stator (18) and the motor electronics (34).

Abstract: A compressor (20) has a case (22) and a crankshaft (38). The case has a number of cylinders (30-32). For each of the cylinders, the compressor includes a piston (34) mounted for reciprocal movement at least partially within the cylinder. A connecting rod (36) couples each piston to the crankshaft. A pin (44) couples each connecting rod to the associated piston. Each pin has first (52) and second (53) end portions mounted to first (56) and second (57) receiving portions of the associated piston and a central portion (48) engaging the associated connecting rod. For each of the pistons a pair of first and second at least partially non-metallic plugs have respective stems received in the pin first and second end portions and respective heads facing a wall surface of the associated cylinder.

Abstract: A compressor (20) has a case (22) and a crankshaft (38). The case has a number of cylinders (30-32). For each of the cylinders, the compressor includes a piston (34) mounted for reciprocal movement at least partially within the cylinder. A connecting rod (36) couples each piston to the crankshaft. A pin (44) couples each connecting rod to the associated piston. Each pin has first (52) and second (53) end portions mounted to first (56) and second (57) receiving portions of the associated piston and a central portion (48) engaging the associated connecting rod. For each of the pistons a pair of first and second at least partially non-metallic plugs have respective stems received in the pin first and second end portions and respective heads facing a wall surface of the associated cylinder.