Reciprocating Rigid Pumping Member Patents (Class 417/415)
  • Patent number: 10760558
    Abstract: A multistage compressor is disclosed that may include a wobbling member operationally coupled with an external power source. The external power source may drive a nutating motion of the wobbling member. The multistage compressor may further include a plurality of flexible chambers connected to the wobbling member, each flexible chamber including a respective intake passage and a respective discharge passage. The wobbling member may sequentially press down and pull up the plurality of flexible chambers. The multistage compressor may further include a one-way valve in each respective intake passage and gas may be drawn into each flexible chamber through the respective one-way valve of each flexible chamber as the wobbling member pulls up each flexible chamber. The gas may then be compressed to a higher pressure as the wobbling member presses down each flexible chamber and compressed gas may be discharged through the respective discharge passage of each flexible chamber.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: September 1, 2020
    Inventors: Abdolreza Fallah, Shapour Faridi
  • Patent number: 10722645
    Abstract: A method for discharging fluid from a syringe and for mitigating occlusion conditions includes actuating the plunger of a syringe into a barrel. The method monitors fluid pressure within the barrel of the syringe and determines that an occlusion exists when the fluid pressure exceeds a predetermined threshold. The method actuates the plunger out of the barrel by a predetermined amount in response to the detected occlusion and actuates the plunger of the syringe into the barrel until a measured fluid pressure within the barrel of the syringe exceeds another predetermined threshold.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: July 28, 2020
    Assignee: DEKA Products Limited Partnership
    Inventors: Dean Kamen, Larry B. Gray, Jesse T. Bodwell, John M. Kerwin, Michael J. Baier, Dirk A. van der Merwe, Stephen L. Fichera, Jonathan R. Thurber, Martin D. Desch
  • Patent number: 10718370
    Abstract: A connecting rod module (1) includes: a connecting rod (10), which is formed of a sintered metal; and bearing raceway rings (outer rings (21, 31)), which are press-fitted into a through-hole (11a, 12a), respectively. The connecting rod (10) has a Young's modulus of from 120 GPa or more to 180 GPa or less. The outer rings (21, 31) each have a Young's modulus of from more than 180 GPa to 240 Gpa or less. When T represents a radial thickness of each of the outer rings (21, 31), D represents an inner diameter dimension of each of the through-holes (11a, 12a), and I represents an interference between the outer ring (21) and a peripheral wall of the through-hole (11a) or between the outer ring (31) and a peripheral wall of the through-hole (12a), the following equations are established: T=(0.05˜0.15)×D; and I=(0.0004˜0.004)×D.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: July 21, 2020
    Assignee: NTN CORPORATION
    Inventors: Tomonori Yamashita, Takehiro Matsuzuki
  • Patent number: 10675055
    Abstract: An insertion device may include a device housing configured to be operatively engaged with and disengaged from a base, and engageable with an actuation device, the device housing having a carrier body supporting a piercing member. The carrier body moveable by a carrier body of the actuation device at least between a retracted position and an advanced position. The device housing having a section for supporting a portion of the carrier body of the device housing, the section moveable relative to the carrier body of the device housing to provide sufficient clearance to allow the carrier body of the device housing to be moved by the carrier body of the actuation device.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: June 9, 2020
    Assignee: Medtronic MiniMed, Inc.
    Inventors: Colin A. Chong, Eric M. Lorenzen, Rafael Bikovsky, Arsen Ibranyan
  • Patent number: 10641261
    Abstract: A pump with a motor includes a pump housing, a motor housing, and a connecting structure configured to connect the motor housing to the pump housing. The connecting structure includes a motor connecting portion provided at an end of the pump housing, and a pump connecting portion provided at an end of the motor housing. The motor connecting portion includes a bearing configured to rotatably support the other end of the rotating shaft whose one end supported by the motor housing, a plurality of through holes, and projections projecting to the side of the motor housing. The pump connecting portion includes a first hole in which the bearing is fitted, a plurality of connecting pieces inserted into the plurality of through holes, respectively, and caulked on the motor connecting portion, and second holes in which the projections are fitted.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: May 5, 2020
    Assignee: OKENSEIKO CO., LTD.
    Inventor: Akira Inoue
  • Patent number: 10578088
    Abstract: Natural frequencies of a front side support spring and a rear side support spring of a reciprocating compressor are formed to be different such that a natural frequency of one support spring is lower than an operating frequency and a natural frequency of the other support spring is higher than the operating frequency. Both support springs may resonate in mutually opposite directions to form an antiphase, and thus, compressor vibrations may be effectively reduced without reducing a stiffness of both support springs.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: March 3, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Sunghyun Ki, Sangmin Lee
  • Patent number: 10378529
    Abstract: A miniature pneumatic device includes a miniature fluid control device and a miniature valve device. The miniature fluid control device includes a gas inlet plate, a resonance plate, a piezoelectric actuator and a gas collecting plate. A first chamber is formed between the resonance plate and the piezoelectric actuator. After a gas is fed into the gas inlet plate, the gas is transferred to the first chamber through the resonance plate and then transferred downwardly. Consequently, a pressure gradient is generated to continuously push the gas. The miniature valve device includes a valve plate and a gas outlet plate. After the gas is transferred from the miniature fluid control device to the miniature valve device, the valve opening of the valve plate is correspondingly opened or closed and the gas is transferred in one direction. Consequently, a pressure-collecting operation or a pressure-releasing operation is selectively performed.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: August 13, 2019
    Assignee: MICROJET TECHNOLOGY CO., LTD.
    Inventors: Shih-Chang Chen, Chi-Feng Huang, Yung-Lung Han, Jia-Yu Liao, Shou-Hung Chen, Che-Wei Huang, Hung-Hsin Liao, Chao-Chih Chen, Jheng-Wei Chen, Ying-Lun Chang, Chia-Hao Chang, Wei-Ming Lee
  • Patent number: 10342589
    Abstract: A pump for use in low-profile applications comprises a barrel for holding fluid; and a piston that converts a rotational driving force into a longitudinal driving motion within the barrel. The pump provides space saving advantages by reducing the need for external equipment and mechanisms around the pump for providing actuation or moving the actuating mechanism.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: July 9, 2019
    Assignee: Oxford Nanopore Technologies Ltd.
    Inventors: Anthony Jones, Jonathan Upsdell
  • Patent number: 10294932
    Abstract: An improved air compressor includes a cylinder that is fitted with a piston body and defines at its top wall a plurality of exit holes having different diameters and communicating between the cylinder and an air storage container. The exit holes are sealed by plugs and compression springs. The exit holes allow the compressed air produced in the cylinder to enter the air storage container more quickly. When the piston body approaches the top wall of the cylinder, one exit hole, with a smaller diameter, allows the compressed air to enter the air storage container more easily. The exit holes with different diameters allow the piston body to move in the cylinder more smoothly, and thus the efficiency of inflating an object can be increased.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: May 21, 2019
    Inventor: Wen-San Chou
  • Patent number: 10280915
    Abstract: A fluid control device (10) having a flow passage passing through a pump chamber (45) and a valve chamber (40) includes a vibration unit (37) that vibrates to cause fluctuation of an internal pressure in the pump chamber (45), a valve bottom plate (23) facing the valve chamber (40) and having a communication hole (43) communicating with the pump chamber (45) at one end and communicating with the valve chamber (40) at the other end, and a valve top plate (21) facing the valve chamber (40) to be opposed to the valve bottom plate (23) and having a discharge hole (41) communicating with the valve chamber (40). The communication hole (43) and the discharge hole (41) are not opposed to each other, and the valve bottom plate (23) is elastically deformed by transmission of vibration of the vibration unit (37) thereto.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: May 7, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Daisuke Kondo, Kiyoshi Kurihara, Hiroyuki Yokoi, Hiroaki Wada
  • Patent number: 10190580
    Abstract: A system for supplementing the electric power needed by a pump jack electric motor, thereby reducing the electric power purchased from the local utility or power supplier. The system comprises a solar photovoltaic system, or other forms of renewable energy, and regenerated power from the electric motor or drive. The system can be both “on-grid” and “off-grid.” Battery banks and capacitor banks may be used to store energy.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: January 29, 2019
    Assignee: Raptor Lift Solutions, LLC
    Inventor: Kavan Graybill
  • Patent number: 10086138
    Abstract: An autonomous drug delivery system advantageously utilizes physiological monitor outputs so as to automatically give a bolus of a rescue drug or other necessary medication when certain criteria and confidence levels are met. An emergency button is provided to manually trigger administration of the rescue drug. The rescue drug may be an opioid antagonist in response to an analgesia overdose, a hypotensive drug to avert an excessive drop in blood pressure or an anti-arrhythmia drug to suppress abnormal heartbeats, to name a few.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: October 2, 2018
    Assignee: MASIMO CORPORATION
    Inventor: Jerome J. Novak, Jr.
  • Patent number: 10072651
    Abstract: A system for supplementing the electric power needed by a pump jack electric motor, thereby reducing the electric power purchased from the local utility or power supplier. The system comprises a solar photovoltaic system, or other forms of renewable energy, and regenerated power from the electric motor or drive. The system can be both “on-grid” and “off-grid.” Battery banks and capacitor banks may be used to store energy.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: September 11, 2018
    Assignee: Raptor Lift Solutions, LLC
    Inventor: Kavan Graybill
  • Patent number: 9989105
    Abstract: An electric actuator (32) for a clutch arrangement (26, 28, 52) of a motor vehicle (10) has an electric drive unit (40) for providing mechanical driving force, an electric control unit (38) that is connected to the electric drive unit (40) to control the drive unit (40), and a cooling element (42) that is connected thermally to electric components of the drive unit (40) and/or the control unit (38). The cooling element (42) is assigned a coolant line (44), through which a coolant can be conducted to dissipate heat from the electric components.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: June 5, 2018
    Assignee: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
    Inventors: Holger Hinrich, Oliver Fischer
  • Patent number: 9989145
    Abstract: An exemplary drive selector includes a housing, a cam positioned in the housing, a follower coupled to a shaft and in contact with the cam, and a biasing member urging the cam toward the follower. One of the cam and the follower includes at least one protrusion, and the other of the cam and the follower includes a plurality of recesses configured to receive the protrusion. When the protrusion is received in the recess, the force provided by the biasing member resists relative rotation of the cam and the follower.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: June 5, 2018
    Assignee: Club Car, LLC
    Inventor: Richard Marcus Mansfield
  • Patent number: 9945369
    Abstract: An air compressor includes a rotating device pivotally connected to a piston body. The rotating device includes a gear body and a counterweight. The gear body is formed together with a counterweight, wherein the counterweight is provided with a crankshaft corresponding to the center of the gear body and a crankpin placed at a distance from the crankshaft. The counterweight is horizontally divided into two integrally formed halves, including a left half and a right half, with a common line connected between the center of the crankshaft and the center of the crankpin, wherein the left half has a weight different from the right half, so that the piston body gathers more rotational momentum from the counterweight at BDC to facilitate upstrokes, so that the piston body can conduct reciprocating motion more smoothly, and thus the service life of the air compressor can be increased.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: April 17, 2018
    Inventor: Wen-San Chou
  • Patent number: 9929610
    Abstract: A permanent magnet embedded electric motor includes a slit and a flux barrier. A hole defining portion of a magnet insertion hole includes an extended portion. The extended portion projects toward an interpolar core portion in a rotor core in an area positioned further on an outer side of a circumferential direction with respect to a width-direction end surface of a permanent magnet. (Lb) is larger than (La), and (Lc) is smaller than (Ld), where the (La) represents a distance between the slit and the core outer peripheral surface; the (Lb) represents a distance between the slit and an outer peripheral-side surface of the permanent magnet; the (Lc) represents a shortest distance between the extended portion and the interpolar core portion; and the (Ld) represents a thickness of the permanent magnet.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: March 27, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masahiro Nigo, Naohiro Oketani, Koji Yabe, Kazuhiko Baba
  • Patent number: 9915253
    Abstract: An improved air compressor includes a cylinder fitted with a piston body and an air storage container. The cylinder and the air storage container are detachably assembled to define an air chamber. A metal seat with a through hole is provided on top of the cylinder. A valve plug is spring-biased against the metal seat. The air storage container is provided with an elongated pressure indicator, which includes a transparent tube defining therein a first bore and a second bore, between which a tapered annular surface is formed. When the air pressure within the air storage container exceeds a predetermined pressure set for the air compressor, the elongated pressure indicator allows excess air to flow into the first bore of the transparent tube and pass through the tapered annular surface to be released to the ambient environment, so that objects can be prevented from damages due to excessive inflations.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: March 13, 2018
    Inventor: Wen-San Chou
  • Patent number: 9890775
    Abstract: A linear compressor may include a shell, a cylinder provided in the shell to define a compression space for a refrigerant, a frame to fix the cylinder to the shell, a piston reciprocated within the cylinder, a discharge valve disposed on or at one side of the cylinder, a discharge cover coupled to the frame and having at least one chamber to reduce pulsation of the refrigerant discharged through the discharge valve, and a valve spring disposed on the discharge cover to provide a restoring force to the discharge valve. The discharge cover may include a cover body having a discharge hole, through which the refrigerant discharged through the discharge valve may be discharged outside of the discharge cover, and a guide passage defined in the cover body to guide at least a portion of the refrigerant discharged through the discharge valve into the at least one chamber.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: February 13, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Junghae Kim, Kyoungkyu Lee, Kiwon Noh
  • Patent number: 9863412
    Abstract: Dual cylinder and single cylinder rocking piston compressors with sound attenuation are disclosed. Due to the tapered shape of the intake and exhaust chamber sides and tops, the gas flow is accelerated and decelerated through the compressors thereby allowing sound energy to be dissipated. Sound attenuation is further enhanced by the addition of baffles, which divide each chamber into a series of smaller attenuation chambers. The baffles also cause the gas flow to accelerate and decelerate as the gas flow passes the baffles. In the case of a dual cylinder rocking piston compressor, enlarging the crossover passageway diameters also creates additional sound attenuation chambers, which contribute to the overall reduction in sound. Further, by using dedicated seals for each intake in the exhaust chamber, flow leakage at higher pressures is decreased, thereby improving compressor efficiencies.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: January 9, 2018
    Assignee: GAST MANUFACTURING, INC.
    Inventor: Christopher Lee Blackburn
  • Patent number: 9775692
    Abstract: An oral irrigator including a fluid reservoir, a pumping assembly, a pressure control assembly, and a nozzle. The pumping assembly comprises a power source, a motor in electrical communication with the power source, and a pump in fluid communication with the reservoir. The pressure control assembly is in fluid communication with the pump; mechanically varies a pressure of a fluid exiting the nozzle to change the outlet pressure of the oral irrigator a high pressure to a low pressure and vice versa.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: October 3, 2017
    Assignee: WATER PIK, INC.
    Inventors: Brenda Lee Thomas, Kurt Michael Taylor
  • Patent number: 9638015
    Abstract: An electric submersible pump (ESP) inverted shroud assembly is described. An ESP assembly includes an inverted shroud separating an ESP pump from a well casing, the ESP pump rotatably coupled to an ESP motor, the inverted shroud having an opening on an upstream terminal side, at least a portion of the ESP motor extending through the opening, the portion of the ESP motor extending through the opening exposed to working fluid, and the opening sealed to the working fluid. An ESP assembly includes an inverted shroud, and an ESP motor including a head, housing and base, the head of the ESP motor at least partially inside the inverted shroud, and the housing and base of the ESP motor at least partially outside the inverted shroud.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: May 2, 2017
    Assignee: Summit ESP, LLC
    Inventors: Wesley John Nowitzki, Joseph Stewart, Randy S. Roberts, Michael Edward Sterling
  • Patent number: 9617985
    Abstract: A compressor having a simplified structure includes a rotation shaft having a spiral groove formed in an outer circumferential surface of the rotation shaft, and a cap member that accommodates a lower portion of the rotation shaft so that the rotation shaft can rotate in the cap member. The cap member may be fixed to one of a stator and a frame such that the cap member does not rotate together with the rotation shaft. Through the simplified structure, oil stored in a sealing case can ascend, and noise caused by rotation of the rotation shaft can be reduced.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: April 11, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Seong Jun Park
  • Patent number: 9571025
    Abstract: A motor apparatus includes a motor having a first active part and a second active part, the first active part having a plurality of separately controllable windings, a control unit comprising a processing unit and for each of one or more of the windings a motor module, wherein the motor module has a power converter.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: February 14, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Christian Müssenberger, Herbert Pommer, Georg Schlatterer, Carsten Spindler, Guido Stöppler
  • Patent number: 9562544
    Abstract: A hydraulic system (1) is provided comprising a supply port arrangement (P, T), a working port arrangement (A, B), and a booster section (7), said supply port arrangement having at least a supply port (P), said booster section (7) being arranged between said supply port arrangement (P, T) and said working port arrangement (A, B). The operational possibilities of such a hydraulic system should be extended. To this end said working port arrangement comprises at least two working ports (A, B), flow direction changing means (9) are provided changing a flow direction through said working port arrangement and inactivating means (16) are provided inactivating or activating said booster section (7) for each flow direction.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: February 7, 2017
    Assignee: miniBOOSTER HYDRAULICS A/S
    Inventors: Joergen Mads Clausen, Christen Espersen, Leif Hansen, Brian Petersen, Joergen P. Todsen, Poul Ennemark, Knud Meldgaard Jensen, Tom Tychsen
  • Patent number: 9362812
    Abstract: A shaft coupling apparatus, a rotary fluid damper, and a deployable device are provided herein. In an embodiment, the shaft coupling apparatus includes a chamber having a non-magnetic diaphragm delimiting at least a portion of the chamber. A first shaft is disposed in the chamber and is rotatable about a first axis. A second shaft is disposed outside of the chamber and is rotatable about the first axis. The diaphragm is disposed between the first and second shafts and separates the first and second shafts from direct physical contact. A magnetic coupling mechanism includes a first magnetic coupler attached to the first shaft and a second magnetic coupler attached to the second shaft, with the first and second magnetic couplers separated by the diaphragm. Magnetic coupling forces are generated between the first and second magnetic couplers to transfer rotational energy from the first magnetic coupler to the second magnetic coupler.
    Type: Grant
    Filed: September 18, 2012
    Date of Patent: June 7, 2016
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventor: David Osterberg
  • Patent number: 9145878
    Abstract: An oscillating linear compressor includes a cylindrical chassis defining a chamber and comprising a plurality of elongated chassis frame members extending between either end of the chassis. The chassis houses a compression cylinder that receives a linearly-driven piston that is connected to a voice coil. A power distribution assembly couples current to the voice coil providing oscillating magnetic field and comprises a plurality of electrically conductive linear bearings coupled to a power supply that are configured to facilitate substantially frictionless, bi-directional travel of the piston. One or more permanent magnets mounted to the elongated chassis frame members providing a permanent magnetic field with which the voice coil's oscillating magnetic field interacts.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: September 29, 2015
    Inventors: Marvin Ray McKenzie, McKinley L. Chaney
  • Patent number: 9144177
    Abstract: A heat dissipation apparatus for effective dissipation of heat comprises an air flow module and a heat sink. The air flow module comprises a casing, a piston module slidably mounted in the casing, an airflow outlet module attached to a first side of the casing, and an electromagnet module attached to a second side of the casing that is opposite to the first side. The airflow outlet module comprises a plurality of airflow outlet grooves. The piston module comprises a magnet. The heat sink is aligned with the plurality of airflow outlet grooves. The electromagnet module is capable of moving the magnet and the piston module back and forth in the casing. The air flow module is capable of blowing air to the heat sink via the plurality of airflow outlet grooves.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: September 22, 2015
    Assignees: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Chih-Hao Yang, Xiang-Kun Zeng, Bao-Quan Shi
  • Publication number: 20150144821
    Abstract: A rear electromagnet suitable for vibrating pumps and electrical valves. The rear electromagnet for vibrating pump and electrical valves, which is the subject of this invention, has features intended to increase the efficiency of the magnetic system due the particular position of the electromagnet in order to exert a direct attractive force over the ferritic core and to obtain the same performances with less copper, iron and consume less electricity.
    Type: Application
    Filed: November 27, 2014
    Publication date: May 28, 2015
    Applicant: TEYLOR INTELLIGENT PROCESSES SL
    Inventor: ADRIAN ALBERTO TEYLOR
  • Publication number: 20150147207
    Abstract: A linear compressor employing a piezoelectric actuator operating in resonance at a frequency substantially below its natural resonant frequency, which is usually of the order of 10 kHz. Low frequency resonance operation of the actuator, of the order of 100 Hz., is achieved by incorporating the actuator and its housing with the moving compression piston, such that the moving mass is substantially increased, and by reduction of the effective piezoelectric stiffness using hydraulic amplification of the actuator displacement. Both these procedures result in a reduction of the actuator resonant frequency. The hydraulic amplification is achieved by using a hydraulic chamber with different sized pistons, linking the actuator motion with motion of the actuator housing, to which the compressor piston is attached. The high efficiency achieved and the lack of moving parts or the need for lubricating oil makes the compressor ideal for use in high reliability and high purity applications.
    Type: Application
    Filed: July 7, 2013
    Publication date: May 28, 2015
    Inventors: Sergey Sobol, Gershon Grossman
  • Publication number: 20150125322
    Abstract: A rotary compressor includes a motor, an eccentric shaft and a cylinder installed in a casing. The motor includes a rotor and a stator. The eccentric shaft rotates with the rotor and turns around in the cylinder. The cylinder divides the casing into a high pressure chamber and a low pressure chamber, and the high pressure chamber is disposed between the motor and cylinder, and the low pressure chamber is disposed at the bottom of the cylinder. An isolating element is installed between the cylinder and the casing for isolating the high pressure chamber and the low pressure chamber. The isolating element includes at least one reflowing hole penetrated through the isolating element and interconnected between the high pressure chamber and the low pressure chamber for isolating high and low pressures effectively.
    Type: Application
    Filed: October 20, 2014
    Publication date: May 7, 2015
    Inventor: WEN-FU CHIANG
  • Publication number: 20150125321
    Abstract: A permanent magnet linear piston pump comprises a piston body, a cylinder body, a permanent magnet assembly and an electromagnetic coil. The piston body is arranged in a piston cavity by a liquid sealing movable fit mode. An inner magnetic body and an outer magnetic body are disposed on at least one side surface of the cylinder body. An electromagnetic coil is axially and distributively wound around a coil supporting member which is disposed at an outside surface of the cylinder body. The electromagnetic coil is disposed between the inner magnetic body and the outer magnetic body. By the above structure, the pump needs not subject the electromagnetic coil to a sealing treatment, thereby attaining a simple structure, more convenient manufacture, lower costs, a reliable operation and convenient maintenance.
    Type: Application
    Filed: October 15, 2012
    Publication date: May 7, 2015
    Inventor: Ronglan Xu
  • Patent number: 9017044
    Abstract: An electromagnetic pump including a reciprocating piston in a cylinder; an electromagnetic portion that moves the piston forward; a first biasing member that moves the piston backward; a support member that supports the first biasing member and defines a pump chamber together with the cylinder and the piston; an intake valve that is incorporated into the support member, is connected to an intake port and prohibits hydraulic fluid from moving in reverse; and a discharge valve that is connected to a discharge port and prohibits the hydraulic fluid from moving in reverse. The intake valve includes a ball, an opening portion of the intake port, and a second biasing member that presses the ball against the opening portion from a side opposite to a direction in which the hydraulic fluid moves. In the opening member, an inner peripheral surface that receives the ball is formed in a taper shape.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: April 28, 2015
    Assignee: Aisin AW Co., Ltd.
    Inventors: Masaya Nakai, Kota Fukao, Takahiro Kokubu
  • Patent number: 9011114
    Abstract: This disclosure relates to medical fluid delivery sets and related systems and methods. In some aspects of the invention, a medical fluid cassette includes a plunger slidably disposed within a recess of a base of the cassette such that a substantially liquid-tight seal is maintained between the plunger and the base as the plunger slides axially within the recess. The plunger and the base cooperate to at least partially define a fluid pump chamber. When the plunger is displaced in a first direction, fluid is forced out of the fluid pump chamber, and when the plunger is displaced in a second direction, fluid is drawn into the fluid pump chamber.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: April 21, 2015
    Assignee: Fresenius Medical Care Holdings, Inc.
    Inventors: Sean Farrell, Joseph Michael Fallon
  • Patent number: 9004879
    Abstract: A discrete, heat-insulating exhaust muffler device (8) and a refrigeration compressor using the exhaust muffler device are provided. The exhaust muffler device (8) includes a metal cavity body defining cavities (9, 10), and intake pipe and exhaust pipe installation holes respectively arranged on the cavities (9, 10). Non-metallic shell bodies (17, 18) are further arranged outside the cavities (9, 10), and the exhaust muffler device (8) is disposed outside cylinder blocks (14) and is separated from the cylinder blocks (14). By disposing a layer of the non-metal shell bodies (17, 18) outside the metal cavity body (9, 10), thermal contact between exhaust gas and gas inside a compressor can be reduced owing to a better heat-insulating effect of the non-metallic material, thereby reducing heat transfer from the metal cavity body (9, 10) to the outside. The gas inside the compressor can have a relatively lower temperature, and the efficiency of the compressor is improved.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: April 14, 2015
    Assignee: Huangshi Dongbei Electrical Appliance Co., Ltd.
    Inventors: Baichang Yang, Lijian Cao, Jingxiong Dai, Renshu He, Younan Wang
  • 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
  • Patent number: 8985968
    Abstract: A cylinder is configured into a bottomed tubular form and includes an inner peripheral wall, an inner bottom wall, an outer peripheral wall and an intake hole and a discharge hole. The inner peripheral wall slidably guides the plunger. The intake hole and the discharge hole communicate between the inner peripheral wall and the outer peripheral wall. A pump housing includes a cylinder receiving hole that includes an inner peripheral wall, into which the cylinder is inserted. A pressurizing chamber is formed by the inner peripheral wall and the inner bottom wall of the cylinder and a distal end outer wall of the plunger.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: March 24, 2015
    Assignees: Denso Corporation, Nippon Soken, Inc.
    Inventors: Teppei Matsumoto, Masatoshi Kuroyanagi, Osamu Hishinuma
  • Publication number: 20150078935
    Abstract: In an air compressor, inner blades of a cooling fan are formed into a centrifugal type, and outer blades are formed into an axial flow type. Exterior air is sucked through a ventilating window by the outer blades, and an air stream (CA1) is generated. A part of the generated air stream flows towards a stator coil, like an air stream (CA2). By a negative pressure generated by the inner blades, the air in the vicinity of the stator coil is sucked to the inner blades, like an air stream (CA3). The sucked air flows out from a motor-side opening towards a non-motor-side opening by a negative pressure generated by the outer blades, is sucked to the outer blades like an air stream (CA4) and flows out together with the air stream (CA1).
    Type: Application
    Filed: August 17, 2014
    Publication date: March 19, 2015
    Inventor: Naoto Ichihashi
  • Publication number: 20150071798
    Abstract: An air compressor device includes a cylinder housing and a supporting plate, a piston engaged in the cylinder housing and having a piston rod, a gear and an eccentric member attached to the supporting plate with a shaft, the eccentric member includes an eccentric pin coupled to the piston rod, and a motor includes a protrusion engaged into an orifice of the supporting plate and includes a spindle extended out of the protrusion and extended through the orifice of the supporting plate, and includes a pinion attached to the spindle and engaged with the gear, and the pinion includes an outer diameter (D) greater than an outer diameter (d) of the protrusion of the motor.
    Type: Application
    Filed: September 6, 2013
    Publication date: March 12, 2015
    Inventor: Wen San Chou
  • Patent number: 8974202
    Abstract: The invention relates to a device for processing an edible product in the form of a viscous to pasty mass, in particular, an edible product based on a fatty mass, such as chocolate, or based on water, such as ice cream. Said device comprises dosing units (D1, D2) for the dosed supply of a specific volume of the mass to a bearing surface. Said dosing units (D1, D2) comprise, respectively, a dosing piston (4) which is mounted in a piston chamber, whereby the dosing piston (4) moves at least in a rotational manner about the piston axis thereof (A1). A first plurality of dosing units (D1) are arranged on a first plane, and a second plurality of dosing units (D2) are arranged on a second plane. The dosing piston (4) of the dosing units (D1), which are arranged on the first plane (D1), are rotationally driven by means of a first drive element (7; 16), and the dosing piston (4) of the dosing units (D2), which are arranged on the second plane, are rotationally driven by means of a second drive element (8; 16).
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: March 10, 2015
    Assignee: Bühler AG
    Inventors: Heinz Gasser, Günter Schenk, Michael Paul
  • Patent number: 8955582
    Abstract: A beamless mechanic-reversing long stroke pumping unit is provided for petroleum production in diverse types of oil fields. Its mechanic-reversing system consists of differentials, brakes, etc. With two differentials assembled together, taper gears inside them perform revolution and rotation, enabling the pumping unit to achieve direction change and speed change mechanically. The stroke length of the pumping unit can reach 8 meters or longer, and the adjustment process is more convenient than most, by merely tuning the position of the proximity switches. Abrasion of the chains typically caused due to resetting of a motor frequently during operation, is eliminated in this pumping unit. The pumping unit has more reliable operation performance, more convenient maintenance, lower costs, better energy saving effects, and can be applied in land oil fields, offshore oil fields, oil wells with low permeability, etc.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: February 17, 2015
    Inventors: Yi Wang, Zijiang Yang, Jin Wang
  • Publication number: 20150030478
    Abstract: A sealed compressor comprises a sealed container (101) which accommodates an electric component (105) and a compression component (106); wherein the compression component (106) includes a shaft (110) including a main shaft section (111) and an eccentric shaft section (112), a cylinder block (114), a piston (126), and a main bearing unit (120) mounted to the cylinder block (114) and supporting the main shaft section (112) such that the main shaft section (112) is rotatable, a thrust ball bearing (132) mounted to a thrust surface (130) of the main bearing unit (120); and the thrust ball bearing (132) includes a plurality of balls (134) held in a cage (133), an upper race (135) having main surfaces one of which is in contact with upper portions of the balls (134); and a lower race (136) having main surfaces one of which is in contact with lower portions of the balls (134) and; a restricting means for restricting a displacement of the upper race (135) with respect to the shaft (110).
    Type: Application
    Filed: April 12, 2013
    Publication date: January 29, 2015
    Applicant: Panasonic Corporation
    Inventors: Kousuke Tsuboi, Kiwamu Watanabe, Akihiko Kubota, Hironari Akashi, Terumasa Ide
  • 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: 8932269
    Abstract: A coupling system for receiving a push rod includes a housing defining an internal channel having a sloped wall, and a piston received within the internal channel. The piston includes at least one flexible member arranged within the channel to be acted upon by the sloped wall to engage the push rod. The only external force required to couple the push rod is an axial force on the piston in a direction. The only external force required to de-couple the push rod is an axial force on the piston in an opposite direction.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: January 13, 2015
    Assignee: Smith & Nephew, Inc.
    Inventors: Ernest A. Dion, Ed McLean, Fred Boussu, Manny J. Salinas, Sean J. Albert
  • Patent number: 8926333
    Abstract: A device for simulating blood flow including an anatomical unit and a waveform generator for generating waveforms. The waveform generator includes a pump capable of pumping a fluid through at least one fluid line and thereby transmitting the waveform from the waveform generator through the fluid line. The waveform generator further includes a bifurcation point capable of splitting the fluid line into additional fluid lines, where the fluid lines include a main line and a parallel line. Additionally, the waveform generator includes valves capable of at least partially occluding fluid flow. The device further includes a reservoir capable of housing the fluid, where the waveforms enter and exit the anatomical unit and the waveform generator through the fluid lines simulating blood flow.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 6, 2015
    Assignee: SIMNEXT, LLC
    Inventors: John Vozenilek, Thomas Cusack, Sabeen Admani, Eliot Bethke, Michael Regan
  • Publication number: 20150004026
    Abstract: A linear compressor is provided. The linear compressor may include a shell having a refrigerant inlet, a cylinder provided inside the shell, a piston that reciprocates inside the cylinder to compress a refrigerant, a motor assembly that provides a drive force to the piston, and a magnet assembly that delivers the drive force to the piston. The magnet assembly may include a magnet frame having a cylindrical shape. A permanent magnet may be installed in or on the magnet frame. A coupling plate may be coupled to a side of the magnet frame and may include a flange coupled to an end portion of the permanent magnet.
    Type: Application
    Filed: June 27, 2014
    Publication date: January 1, 2015
    Applicant: LG ELECTRONICS INC.
    Inventors: Sangsub JEONG, Kyoungseok KANG, Wonhyun JUNG, Chulgi ROH, Jeonguk BYUN, Jookon KIM, Sunki YOON
  • Publication number: 20150004025
    Abstract: A linear compressor is provided that may include a shell provided with a refrigerant inlet; a cylinder provided inside of the shell to form a compression space; a piston that reciprocates inside of the cylinder to compress a refrigerant in the compression space; and a motor assembly that provides a drive force to the piston and provided with a permanent magnet. The piston may include a piston body having a cylindrical outer circumferential surface and a surface-treated area, which may be processed with a material having a predetermined hardness value, and a valve support provided at an end of the piston body and having a suctioning hole be in communication with the compression space. The valve support may form a first non-surface-treated area, which is not surface-treated.
    Type: Application
    Filed: June 27, 2014
    Publication date: January 1, 2015
    Applicant: LG ELECTRONICS INC.
    Inventors: Kyoungseok KANG, Wonhyun JUNG, Chulgi ROH, Sangsub JEONG, Kiwook SONG, Jookon KIM
  • Patent number: 8920146
    Abstract: A pump system configured to deliver drilling fluid in at least one of a driving well and a drilling well includes a pump unit, a rotary drive device configured to drive the pump unit, and a gearbox comprising a driving gear and an driven gear. The rotary drive device is operatively connected to the pump unit by the gearbox.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: December 30, 2014
    Assignee: MHwirth GmbH
    Inventor: Albrecht Heinrichs
  • Publication number: 20140341763
    Abstract: A sealed compressor (100) comprises an electric component (110), a compression component (112), and a sealed container (102), the compression component includes a shaft (118), a cylinder block (124), a piston (130), and a ball bearing (176), the ball bearing includes a cage (168), a plurality of rolling elements (166); a first race (164), a second race (170), and a support member (172), and when a mass of a shaft assembly (118a) including the rotor (116) and the shaft is M, a spring constant of the support member is K, and a maximum rotational frequency of the shaft assembly is F, a relationship of F<1/4?)*(K/M)?0.5 is satisfied.
    Type: Application
    Filed: December 26, 2012
    Publication date: November 20, 2014
    Inventors: Masanori Kobayashi, Ko Inagaki, Terumasa Ide