Patents Examined by Nathan C Zollinger
  • Patent number: 10746162
    Abstract: The present application discloses a compressor including a crank shaft, a first reciprocation converter, a first cylinder body, a first pressurizing portion, a second reciprocation converter, which is connected to the crank shaft with a phase different by 180 degrees from the first reciprocation converter, a second cylinder body, a second pressurizing portion, and a connecting portion configured to interconnect the compression chambers. The compression chambers are arranged so that a timing at which the gas is discharged from a specific compression chamber among the compression chambers becomes the same as a timing at which the discharged gas is suctioned into another compression chamber at a higher side by one stage than the specific compression chamber.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: August 18, 2020
    Assignee: Kobe Steel, Ltd.
    Inventors: Kenji Nagura, Takayuki Fukuda, Ryosuke Yamasaki, Tomohiro Ootsuka
  • Patent number: 10731446
    Abstract: A diversion connector is used for a downhole pump having a plunger and a barrel in a well. The diversion connector is useful in a sandy well having particulates. The plunger has an interior and is reciprocated by a rod relative to the barrel. The connector includes one or more bodies, such as a mandrel, attaching the rod to the plunger. The mandrel has a first exterior surface and defines a fluid passage communicating with the interior of the plunger. A sleeve is disposed on the first exterior surface and has an interior surface floating relative to the first exterior surface. The floating sleeve at least partially prevents particulate uphole of the plunger from passing in a gap between the plunger and the barrel.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: August 4, 2020
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: John E. Stachowiak, Jason W. Bailey, Doug Hebert
  • Patent number: 10724512
    Abstract: It is disclosed a reciprocating compressor having a cylinder body that defines a cylinder; the cylinder may have a cylinder lateral wall and a cylinder axis A and inside it a piston is movable; at least one valve is provided to selectively open and close a valve opening formed in the cylinder lateral wall; cylinder heads at least partially protruding towards the piston inside the cylinder have a recessed surface at least partially facing the valve openings; an intersection between at least a plane containing the cylinder axis A and the recessed surface is a first curve having at least a convex part facing the valve opening.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: July 28, 2020
    Assignee: NUOVO PIGNONE TECNOLOGIE SRL
    Inventors: Federico Sorgona, Gianni Orsi, Alberto Babbini, Massimo Bargiacchi, Ricardo Maleci
  • Patent number: 10711784
    Abstract: Provided is an air compressor which exhibits improved reliability by resolving problems relating to drainage discharge defects, and exhibits improved energy efficiency. The air compressor comprises: a compressor body which compresses air; a compressed air flow path through which the compressed air from the compressor body flows; a heat exchanger which is provided to the compressor flow path so as to cool the compressed air from the compressor body; and a drainage pipe (62) which branches from the compressed air flow path so as to connect to the exterior, and through which drainage condensed from the compressed air cooled in the heat exchanger flows. A strainer (65) which removes foreign matter contaminating the drainage is provided to the drainage pipe (62). An on-off valve (66) at the downstream side of the strainer (65), and a pressure sensor (41) at the upstream side thereof, said sensor detecting pressure inside the drainage pipe (62), are each provided so as to resolve drainage discharge defects.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: July 14, 2020
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Hiroshi Ohta, Hideki Fujimoto
  • Patent number: 10711799
    Abstract: Systems and methods for maintaining a desired differential pressure between a cooling oil of an electric motor and a process gas working fluid of a compressor connected axially to the electric motor. The cooling oil acts as a coolant for the motor compartment of the electric motor and the gas working fluid acts as a coolant for the rotor compartment of the electric motor. At least one bellow is configured to provide two sealed compartments in a pressure equalizer and a spring means is configured to add a differential pressure to the cooling oil, assuring no leaks between the two fluids flows from the cooling oil to the process gas working fluid and no contact of the process gas working fluid with the electric motor stator, in particular electric motor laminations and electric motor windings.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: July 14, 2020
    Assignee: NUOVO PIGNONE SRL
    Inventors: Massimiliano Mariotti, Claudia Cagnarini, Francesco Del Medico
  • Patent number: 10711806
    Abstract: A nozzle module for an energy converter, in particular for a power plant, including a first nozzle for the introduction of a motive fluid into a mixing chamber and an introduction opening for the introduction of a suction fluid into the mixing chamber, the mixing chamber having a geometry for merging the motive fluid and the suction fluid in the mixing chamber in a flow-intensifying manner. To specify a nozzle module which effects an increase in efficiency of the power plant, a vapor pressure of the motive fluid upstream of the first nozzle is lower than a vapor pressure of the suction fluid upstream of the introduction opening, and a gas pressure in the mixing chamber in a region downstream of the first nozzle is lower than a gas pressure in the mixing chamber in a region downstream of the introduction opening.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: July 14, 2020
    Inventor: Matthias Boscher
  • Patent number: 10704715
    Abstract: A vacuum valve comprises a valve suction port flange; a valve exhaust port flange having a greater opening diameter than that of the valve suction port flange; a valve plate; a valve driver configured to slidably drive the valve plate between a closed position and an opening position; and a gas flow path region including an opening of the valve exhaust port flange and having a changing flow path sectional area. In the gas flow path region, a flow path sectional area of an upstream region end is set to an opening sectional area of the valve suction port flange, and increases toward the opening of the valve exhaust port flange.
    Type: Grant
    Filed: May 13, 2018
    Date of Patent: July 7, 2020
    Assignee: Shimadzu Corporation
    Inventor: Naoya Takeda
  • Patent number: 10697448
    Abstract: A miniature fluid control device includes a piezoelectric actuator, a gas collecting plate and a base. The piezoelectric actuator includes a suspension plate, an outer frame, at least one bracket and a piezoelectric ceramic plate. The suspension plate is a square plate. The outer frame is arranged around the suspension plate. A surface of the outer frame and a surface of the suspension plate are coplanar with each other. The gas collecting plate is a frame body with an accommodation space. The base includes a gas inlet plate and a resonance plate. The base is disposed within the accommodation space to seal the piezoelectric actuator. An adhesive layer is arranged between the second surface of the outer frame of the piezoelectric actuator and the resonance plate. Consequently, a depth of a compressible chamber between the piezoelectric actuator and the resonance plate is maintained.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: June 30, 2020
    Assignee: MICROJET TECHNOLOGY CO., LTD.
    Inventors: Yung-Lung Han, Chi-Feng Huang, Shih-Chang Chen, Jia-Yu Liao, Hung-Hsin Liao, Che-Wei Huang, Shou-Hung Chen
  • Patent number: 10683861
    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. Consequently, a pressure gradient is generated to continuously push the gas. The miniature valve device includes a valve film 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 film 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: November 9, 2017
    Date of Patent: June 16, 2020
    Assignee: MICROJET TECHNOLOGY CO., LTD.
    Inventors: Hao-Jan Mou, Ta-Wei Hsueh, Yung-Lung Han, Chi-Feng Huang
  • Patent number: 10683874
    Abstract: A multi-stage electric centrifugal compressor including an electric motor free from risk of breakdown of an operation control part due to heat generated by low-pressure stage and high-pressure stage compressors. Includes an electric motor; a pair of centrifugal compressors comprising a low-pressure stage compressor and a high-pressure stage compressor connected in series; a heat-shielding plate configured to shield heat generated by the low-pressure stage compressor; and a bending portion disposed in middle of the heat-shielding plate, and extending along a rotational shaft of the electric motor so as to surround an outer periphery of the rotational shaft. An inner surface of the bending portion faces the rotational shaft via a clearance part, and the bending portion functions as a shaft sealing portion which prevents leakage of intake air from the low-pressure stage compressor.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: June 16, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Byeongil An, Hiroshi Suzuki
  • Patent number: 10677234
    Abstract: A reciprocating compressor and a method for manufacturing a reciprocating compressor are provided. The reciprocating compressor may include a damper provided at a cylinder block. The damper may include a damper base coupled to the cylinder block and formed of plastic, and a rubber damping portion provided on the damper base to prevent contact between the damper base and the shell, so that friction noise between a base and the shell of the compressor may be reduced.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: June 9, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Dowan Kim, Jongkeun Kim, Jaeho Cho
  • Patent number: 10677252
    Abstract: A fan structure includes a fan impeller, a fan seat and a hollow shaft rod. The fan impeller has a circumferential section and a top section. The circumferential section has multiple fan blades. The fan seat has a bearing cup. A light-emitting unit and a photoconductive component are received in the bearing cup. The hollow shaft rod has a first end, a second end and a through hole. The through hole axially passes through the hollow shaft rod between the first and second ends. A first end of the hollow shaft rod is inserted in the top section of the fan impeller. A second end of the hollow shaft rod is inserted in the bearing cup of the fan seat and assembled with the photoconductive component. The fan structure improves the shortcoming of the conventional light-emitting fan that the light can be hardly fully projected.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: June 9, 2020
    Assignee: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Shih-Cheng Chou, Chang-Yen Ho, Chung-Chien Su
  • Patent number: 10662939
    Abstract: A fluid management system includes a disposable cassette carrying inflow and outflow tubing sections that are configured for releasably mating with a console including a control unit and a pair of roller pump heads. The console may automatically identify the disposable cassette and weigh the fluid in an inflow source. During operation, the system can monitor pressure in the working space, and provide for inflow and outflow control to maintain any desired operating parameters.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: May 26, 2020
    Assignee: Cirrus Technologies Ltd.
    Inventors: Benedek Orczy-Timko, Csaba Truckai
  • Patent number: 10655620
    Abstract: A miniature fluid control device includes a gas inlet plate, a resonance plate and a piezoelectric actuator. The gas inlet plate includes an inlet, a convergence channel and a central cavity. A convergence chamber is defined by the central cavity. The resonance plate has a central aperture. The piezoelectric actuator includes a suspension plate, an outer frame and a piezoelectric ceramic plate. A gap is formed between the resonance plate and the piezoelectric actuator to define a first chamber. The gas is fed into the miniature fluid control device through the inlet of the gas inlet plate, converged to the central cavity through the convergence channel, transferred through the central aperture of the resonance plate, introduced into the first chamber, transferred downwardly through a vacant space between the bracket of the piezoelectric actuator, and exited from the miniature fluid control device.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: May 19, 2020
    Assignee: MICROJET TECHNOLOGY CO., LTD.
    Inventors: Hao-Jan Mou, Yung-Lung Han, Chi-Feng Huang
  • Patent number: 10641267
    Abstract: Disclosed is a component-replaceable water ring vacuum pump in which inner components within a head unit may be disassembled and replaced without separation of the head unit from a main body, thus shortening an operation time and improving operation efficiency through prevention of leakage of an inner liquid during a replacement process. The water ring vacuum pump includes a main body provided with a shaft, a rotor rotated together with the shaft within the main body, a head unit coupled to both sides of the main body, a guide bearing provided within the head unit, and a mechanical seal configured to block inner gas. A bearing bracket to support the guide bearing is detachably fastened to one side of the head unit by a bolt, and an inner cap and an outer cap are assembled to the inner and outer surfaces of the bearing bracket by fixing bolts.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: May 5, 2020
    Assignee: VACCOMP CO., LTD.
    Inventor: Seok Won Lee
  • Patent number: 10644221
    Abstract: The actuator includes a suspension plate, an outer frame, at least one bracket and a piezoelectric plate. The suspension plate includes a first surface and a second surface and is capable of bending and vibrating. The outer frame surrounds a periphery of the suspension plate. The at least one bracket is connected between the suspension plate and the outer frame for supporting the suspension plate. The piezoelectric plate includes a first electrode and a second electrode made of silver palladium alloy doped with graphene. The first electrode is coated with a conducting layer made of graphene-doped paint, and the second electrode is coated with an adhesive layer made of graphene-doped epoxy glue. The adhesive layer is configured to attach and in adhesion with the first surface of the suspension plate. A voltage is applied to the first electrode and the second electrode to make the suspension plate bend and vibrate.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: May 5, 2020
    Assignee: MICROJET TECHNOLOGY CO., LTD.
    Inventors: Hao-Jan Mou, Ta-Wei Hsueh, Li-Pang Mo, Shih-Chang Chen, Ching-Sung Lin, Yung-Lung Han, Chi-Feng Huang, Chang-Yen Tsai
  • Patent number: 10617807
    Abstract: The invention relates to a rotary piston pump, in particular for pumping blood, comprising a piston rotor (1) which has particularly two or three faces when seen in cross-section, which is mounted in a piston chamber (2) and eccentrically rotates, the piston rotor (1) having in its interior a plurality of magnetically interacting elements (4, 4a, 4b), in particular permanent magnets and/or coils, and being driven by the magnetic interaction of these elements (4, 4a, 4b) with at least one moving magnetic field.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: April 14, 2020
    Assignee: RHEINISCH-WESTFAELISCHE-TECHNISCHE HOCHSCHULE AACHEN
    Inventors: Johannes Wappenschmidt, Andreas Goetzenich, Ruediger Autschbach, Ulrich Steinseifer
  • Patent number: 10612550
    Abstract: An electric fuel pump includes a housing having an oil inlet and an oil outlet, an impeller, a stator unit mounted in the housing and including a stator and a starter terminal set connected to the stator, a packaging adhesive encapsulating the stator and the starter terminal set to create an oil guide passage in communication between the oil inlet and the oil outlet, and a rotor unit mounted in the housing and including a rotor rotatably mounted in the stator and a rotating shaft mounted in the rotor and connected with the impeller. When the stator unit is electrically conducted, the rotor unit drives the impeller to draw a fuel oil into the oil guide passage. When the fuel oil goes through the oil guide passage, the stator and the starter terminal set are well protected by the packaging adhesive and prohibited from contacting the fuel oil.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: April 7, 2020
    Assignee: TRICORE CORPORATION
    Inventor: Po-Liang Lin
  • Patent number: 10605239
    Abstract: The pump unit comprises a pump including a piezoelectric element and a discharge mechanism for discharging fluid according to operation of the piezoelectric element, and a valve mechanism attached to the pump. The discharge mechanism and the valve mechanism are separately formed by joining a plurality of metal layer pieces stacked in a predetermined stacking direction by diffusion welding, and are secured to each other by diffusion welding.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: March 31, 2020
    Assignee: DAIKEN MEDICAL CO., LTD.
    Inventors: Masayuki Uruma, Yasunari Kabasawa, Eulhyun Kim
  • Patent number: 10578086
    Abstract: A connector (24) and method of connecting a compressor assembly (10) that increases the pressure of a fluid are described. The compressor assembly (10) includes cylinders (12a,b), crank shaft housings (18a,b), and a motor housing (22). The connector (24) is disposed between the cylinders (12a,b) and the crank shaft housing (18a,b) and configured to engage the cylinders (12a,b) such that vibration during operation of the compressor assembly is reduced through the placement of the connector (24) corresponding to a center of gravity of the compressor assembly (10). The connector may also be used by the compressor assembly as a heat sink, inlet, mount, filter, and/or to provide other functions that improve the operation of compressor assembly.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: March 3, 2020
    Assignee: Koninklijke Philips N.V.
    Inventor: Varaprasad Ventrapragada