Unitary Pump And Motor Working Member Patents (Class 417/417)
  • Patent number: 10533546
    Abstract: A linear compressor is provided. The linear compressor may include a cylinder including a cylinder body that defines a compression space for a refrigerant and a cylinder flange that extends from the cylinder body in a radial direction; a piston that reciprocates within the cylinder in an axial direction; and a frame coupled to the cylinder. The frame may include a frame body into which the cylinder body may be inserted and a first press-fitting portion press-fitted into the cylinder flange.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: January 14, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyunsoo Kim, Donghan Kang, Junghae Kim, Kwangwoon Ahn, Eonpyo Hong
  • Patent number: 10451191
    Abstract: A solenoid valve device for a motor vehicle includes a solenoid valve having an electromagnet, and a fastening device configured to fasten the solenoid valve to a motor vehicle body of the motor vehicle. The fastening device has a carrier element for attachment of the solenoid valve, and holding arms extending from the carrier element for mounting the carrier element to the motor vehicle body. The holding arms support the solenoid valve, at least in part, between them and are made elastic in a pulling direction of the electromagnet of the solenoid valve.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: October 22, 2019
    Assignee: AUDI AG
    Inventor: Harald Hagen
  • Patent number: 10422329
    Abstract: A method includes generating a first varying electromagnetic field using a first voice coil of a first actuator. The method also includes repeatedly attracting and repelling a first magnet of the first actuator based on the first varying electromagnetic field. The first voice coil is connected to a first piston of a compressor, and the first magnet is connected to an opposing second piston of the compressor. Attracting the first magnet narrows a space between the pistons, and repelling the first magnet enlarges the space between the pistons. The method may further include generating a second varying electromagnetic field using a second voice coil of a second actuator and repeatedly attracting and repelling a second magnet of the second actuator based on the second varying electromagnetic field. The second voice coil may be connected to the second piston, and the second magnet may be connected to the first piston.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: September 24, 2019
    Assignee: Raytheon Company
    Inventors: Andrew L. Bullard, Theodore J. Conrad
  • Patent number: 10221841
    Abstract: A fluid pump has a housing, a chamber having an inlet and an outlet, an inlet valve, an outlet valve, and a plunger. The plunger has a plunger tube extending into the chamber and supported for movement, on a suction stroke, to introduce a fluid into the chamber via the inlet, and, on a discharge stroke, to displace the fluid from the chamber via the outlet. An electromagnetic driving unit moves the plunger in two opposite directions. A magnetic core is located adjacent the plunger for establishing a magnetic path across the electromagnetic driving unit and the plunger. The core is located in the path of movement of the plunger on the suction stroke, and is protected or covered by a material against contact with the fluid in the housing.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: March 5, 2019
    Assignee: Ode (HK) Company Limited
    Inventor: Man Ting Ho
  • Patent number: 10125754
    Abstract: A reciprocating compressor is provided. Bearing holes of a fluid bearing of the compressor may be positioned to correspond to a full reciprocating region of a piston, to reduce/eliminate frictional loss and/or abrasion between a cylinder and the piston. The bearing holes may be concentrated at certain regions of the cylinder to stably support the piston through a full reciprocating range. Compression coil springs may maintain concentric alignment of the cylinder and the piston. Gas through holes may be radially formed at the piston to lower a pressure of a bearing space and allow refrigerant to be smoothly introduced into the bearing space through a gas pocket A casing of the compressor may include an outer shell and an inner shell to attenuate vibration generated due to friction generated by operation of the reciprocating compressor.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: November 13, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Kwangwoon Ahn, Kichul Choi, Donghan Kim, Sunghyun Ki, Kyeongbae Park
  • Patent number: 10122233
    Abstract: The present invention discloses a multi-series connection coil without a framework, including at least two potted coils, where the multi-series connection coil without a framework is formed by winding in the following steps: step 1, first winding an enameled wire to form a first potted coil; step 2, on the basis of the first potted coil, continuing to wind a second potted coil; and step 3, continuing to wind potted coils according to requirements. The present invention is applied to a mobile phone camera, a laser head, a motor, a driver, or a smart wearable device, such as a pedometer and a VR device, and can generate a greater driving force in a case of electric power input at a low voltage, and the coil has higher sensitivity.
    Type: Grant
    Filed: May 7, 2017
    Date of Patent: November 6, 2018
    Assignee: Dongguan Li Yin Technology Limited
    Inventor: Huangtung Liao
  • Patent number: 10059116
    Abstract: A liquid discharge apparatus includes a head, a recovery tank, a supply tank connected to the recovery tank, and a pressure regulator. The pressure regulator includes a first cylinder connected to an upper portion of the recovery tank, a first piston movable in the first cylinder, a first valve configured to open and close a path between the recovery tank and the first cylinder, depending on a position of the first piston, a second cylinder connected to the first cylinder and an upper portion of the supply tank, a second piston movable in the second cylinder, a second valve configured to open and close a path between the supply tank and the second cylinder, depending on a position of the second piston, and a third valve configured to open and close a path between the second cylinder and an atmosphere, depending on a position of the second piston.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: August 28, 2018
    Assignee: Toshiba TEC Kabushiki Kaisha
    Inventor: Yasushi Kuribayashi
  • Patent number: 10012222
    Abstract: The compressor comprises a movable assembly carrying a suction muffler and formed by: a piston (10) having a skirt (11) with an open rear end (11a) and a closed front end (11b) which carries a suction valve (50); and an actuator. The suction muffler comprises: a first and a second tubular insert (61, 62) defining a first and a second chamber (C1, C2) and having confronting open ends (61a, 62a) spaced from each other, and closed opposite ends (61b, 62b) respectively affixed to a top wall (12) of the piston (10) and to the actuator; a third tubular insert (63) internally lining the skirt (11); and an annular passage (15), between the third and the second tubular inserts (63, 62), open to the first and second chambers (C1, C2), and communicating the open rear end (11a) of the skirt (11) with the suction valve (50).
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: July 3, 2018
    Assignee: Whirlpool S.A.
    Inventors: Dietmar Erich Bernhard Lilie, Talita Wajczyk
  • Patent number: 10006423
    Abstract: An automotive fuel pump having a body with an inlet, an outlet, and an elongated chamber therebetween. A relief valve, relief valve housing, and check valve are respectively disposed in the chamber between the inlet and the outlet. The relief valve housing has a portion which extends across the chamber so that a first axial end of the relief valve housing forms a valve seat for the check valve while the other axial end forms a valve seat for the relief valve. The check valve permits fluid flow from the body chamber to the outlet while the relief valve exhausts excess fluid pressure at the outlet back into the body chamber.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: June 26, 2018
    Assignee: Hitachi Automotive Systems Americas Inc.
    Inventor: Jason Abdulghani Abbas
  • Patent number: 9987425
    Abstract: A fluid infusion device includes a pump mechanism having a rotor and a stator. The rotor includes a reference surface and a cam element rising from the reference surface. The stator includes a cam element with a stator cam surface. The cam elements cooperate to axially displace the rotor as it rotates. A drive motor is coupled to actuate the rotor to pump medication fluid from a fluid cartridge module to a body, via a subcutaneous conduit. A sensor contact element resides on the reference surface in an area unoccupied by the rotor cam element. A sensing element terminates at the stator cam surface, and cooperates with a detection circuit to detect when the stator cam surface contacts the sensor contact element. The circuit monitors a detection signal obtained from the sensing element to determine an operating condition of the pump mechanism.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: June 5, 2018
    Assignee: Medtronic MiniMed, Inc.
    Inventors: Juan M. Alderete, Matthew William Yavorsky, Jacob E. Pananen
  • Patent number: 9896916
    Abstract: The present invention relates to an electric generation plant (110) of the type without connection to an distributed electric supply network for generating an alternating electric current destined for a plurality of utilities (105) comprising: a first generator (101) fed with fuel of a fossil origin for generating a first alternating electric current in continuous service, i.e.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: February 20, 2018
    Assignee: ENI S.P.A.
    Inventors: Marco Ferrari, Nicola Fiore, Valerio Brocco
  • Patent number: 9879668
    Abstract: A fluid infusion device includes a fluid pump mechanism having a rotor and a stator. The rotor includes an optically detectable feature, a reference surface, and a cam element rising from the reference surface. The stator includes a cam element having a stator cam surface. The cam elements cooperate to axially displace the rotor as a function of angular position of the rotor, wherein the detectable feature rotates and axially translates as a function of angular position of the rotor. A biasing element provides force to urge the rotor cam element toward the stator cam element and toward the reference surface. A drive motor actuates the rotor to pump medication fluid from a fluid cartridge module to a body, via a subcutaneous conduit. An optical detection circuit interrogates the detectable feature during operation of the fluid pump mechanism to determine an operating condition of the fluid pump mechanism.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: January 30, 2018
    Assignee: Medtronic MiniMed, Inc.
    Inventors: Matthew William Yavorsky, Pablo Vazquez, Anthony C. Ng
  • Patent number: 9841011
    Abstract: An linear compressor and a linear motor for a linear compressor is provided. The linear compressor may include a shell, in which a suction inlet may be provided, a cylinder disposed in the shell to define a compression space for a refrigerant, a frame coupled to an outer side of the cylinder, a piston reciprocated in an axial direction within the cylinder, a stator cover coupled to the frame, and a linear motor supported by the frame and the stator cover to provide power to the piston. The stator cover may include a body, and at least one frame coupling portion coupled to the frame. The at least one frame coupling portion may extend from the body toward the frame.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: December 12, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Junghae Kim, Changkyu Kim, Sunghyun Ki, Youngcheol Han, Kyeongweon Lee
  • Patent number: 9797388
    Abstract: An apparatus for connecting a resilient member 1 to a magnetic actuator 2 of a linear compressor. The apparatus includes at least one support member 6 cooperating with a resilient element 1, the support member 6 includes a substantially cylindrical part equipped with intermediate perimeter salient portion 61; at least one fastening element 7 cooperating with the support member 8 and the magnetic actuator 2, and enabling interconnection between a magnetic actuator 2 and a resilient member 1 of a detachable and electrically insulated linear compressor, the fastening element 7 being made in electrically insulating and non-magnetic material.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: October 24, 2017
    Assignee: Whirlpool S.A.
    Inventors: Fernando Luiz Biesek, Everton Magnabosco
  • Patent number: 9774181
    Abstract: A resettable switching apparatus, useful in a GFCI receptacle, has an auto-monitoring circuit for automatically testing various functions and structures of the device. The auto-monitoring circuit initiates an auto-monitoring routine which, among other things, establishes a test fault situation on either the positive or negative half-wave of the power cycle and determines whether the detection mechanisms within the device appropriately detect the test fault and whether the device would trip in the event of an actual fault. Additional functionality of the auto-monitoring circuit permits automatic verification that the device is properly wired, that is, not miswired, and determines whether the device has reached the end of its useful life.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: September 26, 2017
    Assignee: Hubbell Incorporated
    Inventors: Gaetano Bonasia, Kenny Padro
  • Patent number: 9695811
    Abstract: A linear compressor is provided. The linear compressor may include a shell having a refrigerant inlet, a cylinder arranged in the shell, a piston that reciprocates in the cylinder, a motor assembly that provides a drive force to the piston and having a permanent magnet, and a frame arranged on or at a side of the motor assembly. The cylinder may include a first outer circumference with which an inner stator of the motor assembly may be combined, and a second outer circumference that extends from the first outer circumference and forcibly press-fit into the frame.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: July 4, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Kyoungseok Kang, Wonhyun Jung, Chulgi Roh, Kiwook Song, Jookon Kim, Sangsub Jeong
  • Patent number: 9685847
    Abstract: Reluctance-based resonant linear motors and methods of operation are provided. An example linear motor includes a spring having a plurality of coils. The linear motor includes a stator coaxially surrounding at least a portion of the spring. The stator includes a plurality of teeth. The linear motor includes a plurality of windings respectively positioned within a plurality of winding cavities respectively formed by the plurality of teeth. The application of electrical energy to the plurality of windings generates a magnetic field that flows through one or more of the coils of the spring. The flow of the magnetic field through the one or more coils of the spring causes the spring to actuate towards a compressed position. An example method includes periodically applying electrical energy to the plurality of windings such that the spring oscillates at a resonance frequency associated with the linear motor.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: June 20, 2017
    Assignee: Haier US Appliance Solutions, Inc.
    Inventor: Mariano Pablo Filippa
  • Patent number: 9618076
    Abstract: The invention relates to a stationary vibration isolation system and to a method for controlling such a system which comprises a damper effective in a horizontal direction which includes a fluid of variable viscosity.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: April 11, 2017
    Assignee: Integrated Dynamics Engineering GmbH
    Inventors: Peter A. Kropp, Peter Kluth
  • Patent number: 9551339
    Abstract: An electromagnetic pump configured with an electromagnetic portion that generates an electromagnetic force for pressing the piston, and an urging member that urges the piston in a direction opposite to the electromagnetic force. A strainer member including a disk-shaped portion which has a disk shape and in which a strainer surface is formed, and a side portion that extends from an outer peripheral edge of the disk-shaped portion. A suction check valve being capable of sucking the working fluid via the strainer surface. The piston, the urging member, the suction check valve, and the strainer member are sequentially inserted into the cylinder from a side opposite to the electromagnetic portion, and the cover member is attached so as to press the strainer surface.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: January 24, 2017
    Assignee: AISIN AW CO., LTD.
    Inventors: Masaya Nakai, Kota Fukao, Noriomi Fujii
  • Patent number: 9488165
    Abstract: Disclosed is a reciprocating compressor. A cylinder in which a piston makes a reciprocal movement is insertedly coupled to a cylinder part of a frame which fixes a stator of a reciprocating motor, and a collision preventing portion is formed in the cylinder to allow a piston connection portion to collide therewith. Thus, although the piston connection portion overstrokes, the piston connection portion prevent collision force from being transferred to the frame having the cylinder part, whereby a laminated state of the stator can be prevented from being distorted to prevent a degradation of efficiency of the motor, and thus, reliability and performance of the compressor can be enhanced.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: November 8, 2016
    Assignee: LG ELECTRONCS INC.
    Inventors: Sungman Cho, Jungsik Park, Jongchan Park, Sunghyun Ki
  • Patent number: 9353737
    Abstract: A reciprocating motor and reciprocating compressor having a reciprocating motor are provided. Making of the reciprocating motor is made easier, and therefore, manufacturing costs are reduced by configuring the stator such that an inner stator positioned inside a mover and an outer stator positioned outside of the mover are integrally formed, or by making inner and outer circumferential surfaces of the stator have a same curvature. Magnetic leakage is prevented as no gap is formed between the inner and outer stators, thereby improving performance of the reciprocating motor. The use of magnets may be reduced by omitting magnets between stator blocks, and therefore, manufacturing costs may be reduced, when compared to efficiency of the reciprocating motor.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: May 31, 2016
    Assignee: LG ELECTRONICS INC.
    Inventor: Eonpyo Hong
  • Patent number: 9341172
    Abstract: A positive displacement pump (1) with a pump head (3), in which (3) at least one pump space (6) is provided, with a pump diaphragm (7), which is associated with the at least one pump space (6) and which (7) separates the pump space (6) from a reciprocating drive.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: May 17, 2016
    Assignee: KNF Flodos AG
    Inventors: Daniel Kohli, Stephan Kaufmann
  • Patent number: 9186666
    Abstract: The invention relates to a metering device (10; 10a; 10b) comprising a guide tube (20; 20a; 20b), a piston (24; 24a; 24b) inserted displaceably in the guide tube (20; 20a; 20b), an actuating assembly (40; 40a; 42) for exerting a force on the piston (24; 24a; 24b) in order to displace the piston (24; 24a; 24b) in the guide tube (20; 20a; 20b), and a chamber (28, 30) for receiving a medium to be metered (34), said medium to be metered (34) can be aspirated or dispensed according to a displacement of the piston (24; 24a; 24b), the actuating assembly (40; 40a; 42) being equipped for a magnetic interaction with the piston (24; 24a; 24b).
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: November 17, 2015
    Assignee: HAMILTON BONADUZ AG
    Inventors: Meinrad Hofstetter, Vinzenz Kirste
  • Patent number: 9175679
    Abstract: A piston is slidably provided in a cylinder and partitions a first pump chamber, and a second pump chamber connected to an object to be operated. A first on-off valve is provided between the first pump chamber and the outside. A second on-off valve is provided in a connecting flow passage that connects the first pump chamber and the second pump chamber to each other. When the piston is moved forward by an electromagnetic force of a solenoid portion, a capacity of the first pump chamber decreases, and a capacity of the second pump chamber increases. When the piston is moved backward by a biasing force of a spring, the capacity of the first pump chamber increases, and the capacity of the second pump chamber decreases. A pressure receiving area of the front face of the piston is larger than that of the back face thereof.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: November 3, 2015
    Assignee: AISIN AW CO., LTD.
    Inventors: Tetsuya Shimizu, Kazuhiko Kato, Noriomi Fujii, Kazunori Ishikawa
  • Patent number: 9115013
    Abstract: A method of filtering a fluid, including flowing a fluid from a first side of a filter member to a second side of the filter member, the fluid containing dissolved impurities. In addition, the method includes inducing fluid cavitation within the fluid to precipitate out at least a portion of the dissolved impurities. Further, the method includes controlling a pressure differential across the filter member. Still further, the method includes, maintaining or further inducing the fluid cavitation within the fluid in response to controlling the pressure differential. Related systems are also disclosed.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: August 25, 2015
    Assignee: GREEN AGE TECHNOLOGIES LLC
    Inventors: Arthur Johnson, Brandon Johnson, Martin Margulies
  • Patent number: 9103332
    Abstract: A refrigerator may include a compressor with a reciprocating member to compress or expand a working gas by undergoing reciprocating movement, and a leaf spring unit to support the reciprocating member. The leaf spring unit includes a leaf spring having a first rim fixed to a compressor body, a first hub arranged on an inner side of the first rim and mounted on the reciprocating member and a resilient arm part movably supporting the first hub with respect to the first rim, and an auxiliary spring having a second rim fixed to the compressor body, a second hub arranged on an inner side of the second rim and mounted on the reciprocating member and a pair of auxiliary spring parts supported in a form of cantilever on the second rim and the second hub. The leaf spring is arranged between the pair of auxiliary spring parts, and the pair of auxiliary spring parts opposes the resilient arm part.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: August 11, 2015
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventor: Yoshikatsu Hiratsuka
  • Patent number: 9062669
    Abstract: A reciprocating compressor is provided, a size of which may be reduced by closely attaching and securing a reciprocating motor and a cylinder of a compression device to a sealed receptacle to reduce a gap between a main body of the compressor and the sealed receptacle. In addition, an assembling process for the compressor may be simplified by separating a mover of the reciprocating motor and a piston of the compression device from each other. In addition, vibration of the sealed receptacle may be minimized by properly adjusting a mass of components in the reciprocating motor and the compression device, and elasticity of a spring that supports the reciprocating motor and the compression device to offset a force applied to the sealed receptacle. In addition, efficiency of the reciprocating motor may be enhanced by increasing a relative velocity of the reciprocating motor in comparison with a relative velocity of the compression device.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: June 23, 2015
    Assignee: LG ELECTRONICS INC.
    Inventors: Eonpyo Hong, Hyuk Lee, Sunghyun Ki
  • Publication number: 20150139819
    Abstract: A compressor includes a piston disposed in a housing and configured to be reciprocatably driven in the housing by an electromagnetic drive. A conventional linear motor drive assembly reciprocatably drives the piston in an embodiment. A magnetically-geared drive assembly reciprocatably drives the piston in another embodiment. A solenoid drive assembly reciprocatably drives the piston in another embodiment. A control system is coupled to the drive for varying piston displacement, and an accumulator conserves force by decelerating a translating assembly at the end of one stroke and accelerating the assembly in a subsequent stroke.
    Type: Application
    Filed: May 10, 2013
    Publication date: May 21, 2015
    Inventors: Riccardo Bagagli, Leonardo Tognarelli, Massimo Bargiacchi, Alessio Capanni
  • Publication number: 20150132161
    Abstract: In one aspect of the present invention, a stator of a linear compressor comprises first stator pieces that are circumferentially and sequentially arranged about an axial direction and are radially disposed, second stator pieces that are provided between outer parts of the adjacent first stator pieces, and an outer side, away from a motor axis, of the second stator pieces assembled at an outer circumference of the stator. The stator can reduce the magnetic losses of the stator caused by the gap, and improve the efficiency of the motor. It can also improve the performance, stability, durability and reliability of the linear compressor. It can also reduce the bulk of the linear compressor.
    Type: Application
    Filed: January 22, 2015
    Publication date: May 14, 2015
    Inventors: Bin Song, Hyeomgkook Lee, Saina Yan, Zhiqiang Zhao, Sheng Xu, Biao Li
  • Patent number: 9028227
    Abstract: 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 solenoid, supplied with alternating current and assembled around at least a portion of the body and a magnetic envelope surrounding at least a portion of the body. The presence of a magnet magnetized longitudinally in a predetermined direction and a magnetic envelope orienting and channeling flux lines created by the magnet either around the solenoid or directly inside themselves creates an oscillating magnetic force on the piston.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: May 12, 2015
    Assignee: Sauermann Industrie SA
    Inventor: François Sardet
  • Publication number: 20150125323
    Abstract: A linear motor compressor including a compressor housing and a cylinder housing having a plurality of opposing compression chambers. A piston freely reciprocates within the cylinder housing using a linear electric motor.
    Type: Application
    Filed: November 7, 2014
    Publication date: May 7, 2015
    Applicants: Gas Research Institute, Board of Regents, The University of Texas System
    Inventors: Jason STAIR, Anthony LINDSAY, Michael LEWIS, Raymond ZOWARKA, Siddharth PRATAP, Clay HEARN, Charles PENNEY, Michael WORTHINGTON, Hsing-Pang LIU
  • Patent number: 9011112
    Abstract: 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 fuel pump from an outlet port. A stator has multiple stator cores on which respective stator coils are wound to form a star-connection winding. A terminal sub-assembly is provided hi an axial side portion of the stator. The terminal sub-assembly has multiple conductive members and each end portion of the stator coils is respectively connected to connecting portions of the conductive members, which are arranged at equal intervals in a circumferential direction of the terminal sub-assembly.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: April 21, 2015
    Assignee: Denso Corporation
    Inventors: Jyunki Tanahashi, Kiyoshi Nagata
  • Patent number: 9004885
    Abstract: 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 hermetic shell by a support spring consisting of a leaf spring, so as to reduce the gap between a compressor body and the hermetic shell and thus reduce the size of the compressor. In addition, the masses of the members of the reciprocating motor and of the compression unit, as well as the elasticity of the spring supporting the members, are properly adjusted to offset the force being applied to the hermetic shell, thereby minimizing the vibrations of the hermetic shell. Further, the relative velocity of the reciprocating motor increases such that the relative velocity of the reciprocating motor is faster than the relative velocity of the compression unit, thereby improving the efficiency of the motor.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: April 14, 2015
    Assignee: LG Electronics Inc.
    Inventors: Sunghyun Ki, Hyuk Lee, Eonpyo Hong
  • Patent number: 9004884
    Abstract: 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 therethrough. The housing is configured to be coupled to a reservoir such that the first surface is disposed within an interior volume of the reservoir and the second surface is disposed outside the interior volume of the reservoir. The housing includes a seal portion configured to fluidically isolate the first surface from the second surface. The cavity is configured to receive at least a portion of the pump element such that movement of the pump element produces a fluid flow from an inlet opening defined by the first surface and an outlet opening defined by the second surface.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: April 14, 2015
    Assignee: Synerject LLC
    Inventors: Kevin L. Leppert, Jason D. Keown
  • Patent number: 9004883
    Abstract: 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 ends which respectively include an inlet or suction port and an outlet or pressure port and within which a plunger or piston resides. The piston is biased in opposite directions by a pair of opposed compression springs. A first compression spring limits and arrests travel of the piston during the suction or return stroke and a second compression spring limits travel of the piston during the pumping stroke and returns the piston after the pumping stroke. The piston includes a first check valve that opens to allow hydraulic fluid into a pumping chamber during the suction stroke and closes during the pumping stroke to cause fluid to be pumped out of the pumping chamber.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: April 14, 2015
    Assignee: GM Global Technology Operations, LLC
    Inventors: Vijay A. Neelakantan, Paul G. Otanez, Shushan Bai
  • Patent number: 8998589
    Abstract: 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 to the shell (10) and a reciprocating movable part (42); an actuating means (50) driven by the movable part (42); an elastic means (60a) coupling the actuating means (50) to the piston (30), so that they are reciprocated in phase opposition. A supporting elastic means (70) connects the actuating means (50) to the shell (10) and presents a radial rigidity for supporting the lateral loads actuating on said movable part (42) and actuating means (50), and for minimizing the axial misalignments between the movable part (42) and the fixed part (41) of the linear electric motor (40), the supporting elastic means (70) presenting a minimum axial rigidity for allowing the displacement of both the piston (30) and the actuating means (50).
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: April 7, 2015
    Assignee: Whirlpool S.A.
    Inventors: Dietmar Erich Bernhard Lilie, Paulo Rogerio Carrara Couto, Celso Kenzo Takemori, Egidio Berwanger
  • Publication number: 20150082775
    Abstract: The present invention relates to a dosing valve and to a dosing device (15) for introducing a liquid medium into an exhaust-gas stream of an internal combustion engine (1) of a motor vehicle. The dosing device (15) has a pump (23) for delivering the liquid medium. The medium is injected into the exhaust-gas stream by means of a dosing valve (13) which can be controlled by way of an electromagnet (65). The dosing device (13) comprises a housing (33) with a stepped bore (34, 34.1, 34.2, 34.3, 34.4), wherein a pump sleeve (47) is guided sealingly in one portion (34.4) of the stepped bore (34). A hollow-bored piston (49) is guided sealingly in a central bore (48) of the pump sleeve (47). In a low-pressure chamber (61), an armature (69) is fastened to the piston (49), and furthermore a magnet sleeve (67) is fastened to the housing (33).
    Type: Application
    Filed: February 19, 2013
    Publication date: March 26, 2015
    Inventor: Matthias Burger
  • Publication number: 20150033767
    Abstract: A cryocooler is described that can include a pressure wave generator, and a refrigeration device (for example, a coldhead), which can be used to liquefy a gas when the gas is exposed to a surface of the refrigeration device. The pressure wave generator can include one or more motors. Each motor can include a stator, and at least one electrical coil wound around a portion of the stator. The electrical coil can generate a reversing magnetic field when alternating electric current is passed through the electrical coil. The motor can further include a pressurized container that can be placed within the space enclosed by the stator, and a piston that can be placed inside the pressurized container. The stators can be placed external to the pressurized container. The piston is made by combining magnets that have opposite and transverse polarities, and are combined adjacently on a common reciprocating axis.
    Type: Application
    Filed: August 1, 2014
    Publication date: February 5, 2015
    Inventors: John A. Corey, Douglas Alan Wilcox, II
  • Patent number: 8944785
    Abstract: 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 flow along part of the air gap; a cylinder having a head at one end; a piston connected to a magnet, the magnet driven by the magnetic flow of the motor winding to move inside a displacement path including at least partially the air gap; the displacement of the magnet making the piston reciprocatingly move inside the cylinder; and an inductive sensor disposed at a point of the displacement path of the magnet, such that when the piston reaches a position of closest approach to the cylinder head, the inductive sensor detects a variation in the magnetic field resulting from the corresponding position of the magnet, and generates a voltage signal arising from this magnetic field variation.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: February 3, 2015
    Assignee: Whirlpool S.A.
    Inventors: Dietmar Erich Bernhard Lilie, Paulo Sergio Dainez, Nerian Fernando Ferreira, Marcelo Knies
  • Patent number: 8939737
    Abstract: 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 the housing through which the fluid flows from the inlet to the outlet. An actuator is positioned within the housing and is moveable between a retracted position and a forward position, the actuator defining a piston chamber for storing fluid received through the inlet when the actuator is in the retracted position and for driving the fluid stored in the piston chamber toward the outlet when the actuator transitions from the retracted position to the forward position. The actuator includes an armature and a piston coupled to the armature and moveable within the piston channel. The piston channel wall is provided with a groove for conducting fluid from the inlet to the outlet.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: January 27, 2015
    Assignee: Medtronic MiniMed, Inc.
    Inventor: John Gray
  • Patent number: 8926296
    Abstract: 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 voltage (VM), the controlled voltage (VM) having a voltage frequency (?P) applied to the linear motor (10) and adjusted by a processing unit (22), the range of piston (1) displacement being dynamically controlled in function of a variable demand of the cooling system (20), the linear compressor (100) having a resonance frequency, the processing unit (22) adjusting the range of piston (1) displacement, so that the linear compressor (100) will be dynamically kept on resonance throughout the variations in demand of the cooling system (20).
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: January 6, 2015
    Assignee: Whirlpool, S.A.
    Inventors: Paulo Sergio Dainez, Dietmar Erich Bernhard Lilie, Márcio Roberto Thiessen
  • Publication number: 20150004028
    Abstract: A linear compressor is provided. The linear compressor may include a shell having a refrigerant inlet, a cylinder provided within the shell, a piston that reciprocates within the cylinder to compress a refrigerant, a motor assembly that provides a drive force to the piston, a support provided for the magnet assembly, to support an end of a permanent magnet, and a frame engaged with the cylinder to support the motor assembly, and that includes a contact to absorb impact when the piston collides against the support.
    Type: Application
    Filed: June 27, 2014
    Publication date: January 1, 2015
    Applicant: LG ELECTRONICS INC.
    Inventors: Kyoungseok Kang, Wonhyun Jung, Chulgi Roh, Jungwan Heo, Sangsub Jeong
  • Publication number: 20150004027
    Abstract: A linear compressor is provided. The linear compressor may include a shell having a refrigerant inlet, a cylinder arranged in the shell, a piston that reciprocates in the cylinder, a motor assembly that provides a drive force to the piston and having a permanent magnet, and a frame arranged on or at a side of the motor assembly. The cylinder may include a first outer circumference with which an inner stator of the motor assembly may be combined, and a second outer circumference that extends from the first outer circumference and forcibly press-fit into the frame.
    Type: Application
    Filed: June 27, 2014
    Publication date: January 1, 2015
    Applicant: LG Electronics Inc.
    Inventors: Kyoungseok KANG, Wonhyun JUNG, Chulgi ROH, Kiwook SONG, Jookon KIM, Sangsub JEONG
  • Publication number: 20150004029
    Abstract: A linear motor includes a stator having a core and an armature including coils respectively attached to the cores. A mover includes a shaft-like member having an opposed surface opposed to the armature and a field magneton made of a plurality of permanent magnets arrayed along the shaft-like member and fixed to the opposed surface. A frame member is configured to support the stator. A retaining member is attached to the frame member and configured to retain the shaft-like member movably in the longitudinal direction thereof such that the mover is movable in the first direction with respect to the stator.
    Type: Application
    Filed: December 17, 2012
    Publication date: January 1, 2015
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Tomoyoshi Utsumi
  • Publication number: 20140369855
    Abstract: A pump for exchange of fluid between an apparatus reservoir and a reserve reservoir. The pump may have an elongated tubular body with a central bore with a reservoir end portion, an inlet end portion and an intermediate barrel portion. A piston assembly with a driving piston with a stem member with nonmagnetic properties attached and the stem member has a tubular extension member attached with all in longitudinal axis alignment slidably positioned in the central bore to position the driving piston adjacent to an electromagnetic coil assembly that is positioned around the intermediate barrel portion and to position the tubular extension member for a reservoir end to extend outwardly at the reservoir end portion opening. An output tubular member with a pressure relief valve is attached to an output port in a side wall of the reservoir end portion positioned for release of fluid through an output port.
    Type: Application
    Filed: June 14, 2013
    Publication date: December 18, 2014
    Inventors: Richard Nelson, Robert M. Nelson, Robert K. Dyas
  • Patent number: 8894380
    Abstract: 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 between the cylinder and the piston, and then discharge the same. The piston is operated at a top dead center position and in a resonance state by symmetrically applying a voltage even if a load varies. An elastic coefficient of mechanical spring is set in consideration of a degree of shift of the piston influenced by gas springs varied by the load, and an initial value of the piston to maintain stroke of the piston is set so as to correspond to a required cooling capacity condition.
    Type: Grant
    Filed: October 20, 2008
    Date of Patent: November 25, 2014
    Assignee: LG Electronics Inc.
    Inventors: Yang-Jun Kang, Chan-Gab Park, Young-Hoan Jeon, Kyoung-Seok Kang
  • Patent number: 8876497
    Abstract: 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 compress the refrigerant, and a frame having a mounting hole so that one end of the cylinder may be mounted thereon and a deformation prevention portion in some section around the mounting hole brought into contact with the one end of the cylinder. Even if a size of the cylinder is increased and a size of the frame limited, the frame is provided with enough strength to support the cylinder, thereby reducing fastening deformations and improving operation reliability.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: November 4, 2014
    Assignee: LG Electronics Inc.
    Inventor: Jung-Hae Kim
  • Patent number: 8858186
    Abstract: 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 forcible cooling capacity modulation, and a cooling system using the same. The linear compressor according to the present invention includes a compression space into which refrigerant is sucked, a movable member which linearly reciprocates to compress the refrigerant sucked into the compression space, one or more springs which are installed to elastically support the movable member in a motion direction of the movable member, a motor unit which includes a motor and a capacitor connected in series to the motor so as to make the movable member linearly reciprocate, and a motor control unit which performs a natural cooling capacity modulation according to a load by reciprocation of the movable member.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: October 14, 2014
    Assignee: LG Electronics Inc.
    Inventors: Jong-Kwon Kim, Shin-Hyun Park, Kye-Lyong Kang, Hee-Dong Kang, Jeong-Uk Lee, Hyun Kim
  • Patent number: 8850845
    Abstract: 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 thereby alternately align compression slots on the piston's opposing ends with vapor suction ports and highly-compressed vapor discharge ports. Electromagnet use lowers the amount of battery power required for piston rotation. A condenser in a mounting pan under the pump achieves refrigerant condensation, while a fan blowing air through an evaporator positioned within a flexible hose causes cool air discharge through openings in the hose's terminal end fitting. The condenser utilizes surplus condensation from the evaporator to aid its vapor-to-liquid conversion, and batteries only provide power for the magnetic control module and fan.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: October 7, 2014
    Inventor: David Wayne Tucker
  • Patent number: 8834137
    Abstract: 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 received within the housing for movement in the direction of the central axis. The pump also includes a handle assembly slidably disposed at least partially around an outer circumference of the housing for movement in the direction of the central axis, the handle assembly being substantially annular ring-shaped, and the handle assembly including a grip engageable by a hand of an operator for manually sliding the handle assembly, the handle assembly being coupled to the movable valve assembly, manual movement of the handle assembly along the central axis causing corresponding movement on the movable valve assembly along the central axis.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: September 16, 2014
    Assignee: Bemis Manufacturing Company
    Inventors: Paul Andrew Sworske, Michael Joseph Holz