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9028227 Electromagnetic pump with oscillating piston  
An electromagnetic pump is provided, which includes a hollow tubular body extending along a longitudinal direction, a piston mounted so as to be able to move inside the hollow tubular body, a...
9011112 Fuel pump  
A fuel pump has a motor portion and a pump portion, wherein fuel is sucked from an inlet port into the pump portion when an impeller is rotated and the pressurized fuel is discharged out of the...
9004885 Reciprocating compressor  
The present invention relates to a reciprocating compressor in which a cylinder of a compression unit is tightly fixed to a hermetic shell, and a stator of a reciprocating motor is fixed to the...
9004883 Low noise high efficiency solenoid pump  
A low noise, high efficiency solenoid pump includes a housing containing a hollow electromagnetic coil. Within the coil resides a pump assembly defining a tubular body having a pair of opposed...
9004884 In-tank fluid transfer assembly  
A fluid transfer assembly includes a housing within which at least a portion of a pump element can be disposed. The housing includes a first surface and a second surface and defines a cavity...
8998589 Linear compressor  
The linear compressor comprises a shell (10) which affixes a cylinder (20) defining a compression chamber (21) housing a piston (30); a linear electric motor (40) having a fixed part (41) affixed...
8944785 Piston and cylinder combination driven by linear motor with cylinder position recognition system and linear motor compressor, and an inductive sensor  
A piston and cylinder combination driven by linear motor with cylinder position recognition system, including a support structure forming an air gap; a motor winding generating a variable magnetic...
8939737 Infusion device with a grooved piston channel wall  
An apparatus for delivering a fluid includes a housing, an inlet in the housing for receiving the fluid, and an outlet in the housing for discharging the fluid. A piston channel is provided within...
8926296 Linear motor, a linear compressor, a method of controlling a linear compressor, a cooling system, and a linear compressor controlling a system  
A linear compressor (100) applicable to a cooling system (20) includes a piston (1) driven by a linear motor (10), the piston (1) having displacement range controlled by means of a controlled...
8894380 Reciprocating compressor  
A reciprocating compressor is provided that reciprocates a piston inside a cylinder as a linear motor is driven, to compress a refrigerant by sucking the refrigerant into a compression space...
8876497 Linear compressor  
A linear compressor is provided that includes a cylinder having a compression space for refrigerant therein, a piston that linearly reciprocates inside the cylinder in an axis direction to...
8858186 Linear compressor  
The present invention relates to a linear compressor, and more particularly, to a linear compressor which supplies a necessary cooling capacity through a natural cooling capacity modulation and a...
8850845 Portable cooling unit  
A portable cooling unit comprising a magnetic spiral vapor pump that utilizes a magnetic pulse between two electromagnets and spiral drive slots to pull a piston back-and-forth 180-degrees and...
8834137 Primer bulb  
A pump includes a substantially tubular housing having an inlet end and an outlet end and defining a central axis and a chamber within the body portion, and a movable valve assembly slidably...
8807965 Control system for electromagnetic pumps  
A control system for controlling electromagnetic pumps, such as electromagnetic driven membrane pumps, has at least one microprocessor and at least one sensor, the microprocessor controlling the...
8794934 Linear compressor  
A linear compressor for producing a driving force by magnetic induction and naturally modulating a cooling capacity according to a load includes a fixed member provided with a compression space, a...
8784069 Method of detecting impact between cylinder and piston driven by a linear motor, detector of impact between a cylinder and piston driven by a linear motor, gas compressor, control system for a cylinder and a piston set driven by a linear motor gas compressor, control system for a cylinder and a piston set driven by a linear motor  
A method of detecting impact or collision between a cylinder (2) and piston (1) driven by a linear motor of a gas compressor includes the steps of: i) obtainment of a reference signal (Sr)...
8770951 Air pump  
An air pump structured to facilitate the installation of a pair of pistons includes a casing (17) having a pair of cylinder chambers (14) slidably accommodating a pair of pistons (16),...
8747081 Linear compressor  
A linear compressor is provided that includes a stationary member including a cylinder that provides a space to compress a refrigerant; a movable member linearly that reciprocates with respect to...
8734133 Fuel pump  
A fuel pump has a motor portion and a pump portion, wherein fuel is sucked from an inlet port into the pump portion when an impeller is rotated and the pressurized fuel is discharged out of the...
8714946 Linear compressor with an electro-magnetic spring  
A linear compressor is provided. The linear compressor includes an electro-magnetic spring and a casing that defines a chamber. A piston is received within the chamber of the casing. The...
8714945 Ultra-low friction air pump for creating oscillatory or pulsed jets  
An air pump positioned within a hollow space in an aerodynamic structure for controlling the flow over an aerodynamic surface thereof, includes a movable member linearly displaced by a very low...
8684706 Connecting rod for a linear compressor  
A linear compressor has a hollow piston with crown and sidewall. The piston reciprocates in a cylinder. A piston rod connects the piston to a spring. A connection between the piston rod and the...
8678788 Linear compressor  
A linear compressor is provided. Unnecessary parts of a motor cover of the compressor are bent toward a rear cover in an axis direction to form supporting ends of the motor cover, and the...
8674652 Motor control device  
A motor control device includes an inverter circuit including a plurality of switching elements connected into a three-phase bridge configuration and converting a direct current into a three-phase...
8651834 Linear compressor  
A linear compressor comprises: a fixed member including a cylinder for providing a refrigerant compression space; a movable member, which includes a piston for compressing refrigerant inside the...
8628308 Actuator with grooved piston for a fluid infusion device  
An apparatus for delivering a fluid includes a housing, an inlet in the housing for receiving the fluid, and an outlet in the housing for discharging the fluid. A piston channel is provided within...
8628307 Proximity-sensor support, a compressor, a valve plate and a cooler  
One describes a support for a proximity sensor to sense the proximity of a piston of a compressor, a compressor proper, a valve plate of a compressor and a cooler provided with these pieces of...
8613603 Armature for a solenoid actuator  
An armature for a solenoid actuator is disclosed. The armature comprises a first face comprising a recess suitable for receiving a biasing spring in use of the armature; a second face opposite the...
8608461 Fluid pump  
A pump for pumping a fluid comprises an inlet, an outlet, an internal volume disposed between the inlet and the outlet, a first pumping arrangement operable to pump a first volume of fluid from...
8587163 Electric motors and related systems for deployment in a downhole well environment  
Electric motors configured for deployment in a downhole well environment are provided. Downhole well pumping systems including an electric motor are also provided. In one example, an electric...
8562311 Compressor improvements  
A linear compressor has a hollow piston with crown and sidewall. The piston reciprocates in a cylinder. A piston rod connects the piston to a spring. A connection between the piston rod and the...
8562312 Linear motor and reciprocating compressor employing the same  
A linear motor for generating a linear reciprocating motion force, and a reciprocating compressor for compressing a refrigerant by employing the linear motor. The linear motor and the...
8556599 Linear compressor  
A linear compressor is provided. The linear compressor includes a cylinder having a refrigerant compression space inside; a piston, linearly reciprocating inside the cylinder to compress a...
8535023 Linear compressor  
A linear compressor includes a fixed member provided with a compression space, a movable member which linearly reciprocates inside the fixed member to compress refrigerant, one or more springs...
8529224 Hermetic compressor having auxiliary communication tube  
A hermetic compressor for adjusting the length and cross sectional area of a communication path as a refrigerant flow passage, so as to attenuate a discharge pulsation and consequently, a...
8496453 Linear compressor  
A linear compressor is provided, which has a reduced number of front main springs among springs continuously transmitting a force so that a piston can move in a resonance condition. The linear...
8480383 Solenoid pump  
A solenoid pump is equipped with a housing formed therein with a fluid passage through which a fluid flows from an inlet port to an outlet port, and a movable member, which is displaced based on...
8465263 Dynamic control of an electric drive  
A fluid delivery system includes a pump operably coupleable to a source of fluid. A reciprocating electromagnetic actuator is coupled to the pump and has a coil that when energized causes the...
8465266 Vacuum pressure systems  
Vacuum pressure systems are provided. In this regard, a representative vacuum pressure system includes: an inlet; and a linear actuator having a permanent magnet, a coil, an inner ferromagnetic...
8449274 Magnetic reciprocating pump  
A magnetic reciprocating pump includes a tube having ends defining intake and discharge ports, first and second magnetic plungers axially aligned within the tube of corresponding cross section for...
8430651 Multi-material single-piece actuator member for miniature reciprocating piston pump in medical applications  
An implantable medical device including a two piece actuator member which comprises a monocrystaline piston and a magnetizable pole. The monocrystalline piston is positioned within a piston...
8419389 Reciprocating compressor  
A reciprocating compressor in which a piston is linearly reciprocated inside a cylinder, for sucking a refrigerant into a compression space, and compressing and discharging the refrigerant. More...
8415839 Apparatus and methods for mitigating electromagnetic emissions  
Apparatus, methods, and other embodiments associated with mitigation of magnetic fields are described herein. In an embodiment, a method for mitigating an electromagnetic field includes...
8388323 Reagent dosing pump  
A pump is provided for pumping a liquid. The pump includes an inlet, an outlet, and a pumping chamber for receiving the liquid from the inlet. An actuator arrangement is also included and is...
8382455 Stator for linear compressor  
A stator for a linear compressor is provided that includes a coil winding, in which a coil is wound in a circumferential direction and current flows; a bobbin set, which is wound with the coil...
8371824 Apparatus and method for controlling linear compressor with inverter unit  
An apparatus and method for controlling a linear compressor with an inverter unit. In the apparatus and method, a capacitor is connected between a driving motor and an inverter unit that applies a...
8366415 Linear compressor  
A linear compressor is provided that includes a shell; a fixed member installed inside the shell, and including a cylinder that provides a compression space for a refrigerant introduced into the...
8347918 Solenoid valve apparatus  
A solenoid valve apparatus includes a solenoid valve and a switching device that switches between a first state in which the working fluid in the pump chamber is discharged when the solenoid valve...
8342078 Reciprocating-piston pump for feeding a liquid  
A reciprocating-piston pump having an electromagnetically driveable reciprocating piston, which is mounted with a restoring spring, for feeding a liquid, an impact damper composed of an elastomer...