Patents Assigned to Sumitomo Heavy Industries, Ltd.
  • PULSE TUBE CRYOCOOLER AND METHOD OF MANUFACTURING PULSE TUBE CRYOCOOLER
    Publication number: 20210207853
    Abstract: A pulse tube cryocooler includes a pulse tube that includes a tube inner space, and an integral flow straightener that includes a flow straightening layer disposed to face the tube inner space so as to straighten a refrigerant gas flow from the tube inner space or into the tube inner space and a heat exchange layer formed integrally with the flow straightening layer outside the flow straightening layer with respect to the tube inner space so as to exchange heat with the refrigerant gas flow by contact with the refrigerant gas flow and is disposed at a low-temperature end and/or a high-temperature end of the pulse tube. The flow straightening layer includes a plurality of protrusions that protrude from the heat exchange layer toward the tube inner space.
    Type: Application
    Filed: March 4, 2021
    Publication date: July 8, 2021
    Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventor: Mingyao XU
  • Cryopump and gate valve
    Patent number: 11047374
    Abstract: A cryopump includes a cryopump flange for attachment to the flange on a gate valve, and an annular baffle that axially extends toward the gate valve from the cryopump flange such that the annular baffle forms an annular orifice in association with a valve plate component of the gate valve. The annular orifice may be defined between an upper surface of the annular baffle and the valve plate.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: June 29, 2021
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventor: Ken Oikawa
  • Bending meshing type gear device
    Patent number: 11041545
    Abstract: A bending meshing type gear device includes an internal gear, an external gear which meshes with the internal gear, a wave generator which bends and deforms the external gear, and a wave generator bearing which is disposed between the wave generator and the external gear, in which the wave generator bearing has a rolling body and an outer ring, and a minimum inner peripheral length of the external gear is larger than a maximum outer peripheral length of the outer ring.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: June 22, 2021
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Shinji Yoshida, Toshiya Nagumo, Masayuki Ishizuka
  • CRYOCOOLER
    Publication number: 20210180834
    Abstract: There is provided a cryocooler including a cylinder, a displacer disposed inside the cylinder and driven to reciprocate by a gas pressure, a collar rigidly connected to the displacer to reciprocate together with the displacer, a collar chamber divided into an upper section and a lower section by the collar, a second seal portion provided between the displacer and the cylinder to seal the lower section, a lower bumper provided in the lower section to mitigate interference between the displacer and the cylinder when the displacer is located at a bottom dead center, and a communication passage formed in the collar or in the collar chamber to ensure communication between the upper section and the lower section when the displacer is located at a bottom dead center.
    Type: Application
    Filed: February 26, 2021
    Publication date: June 17, 2021
    Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Mingyao XU, Qian BAO
  • Pulse tube cryocooler and rotary valve unit for pulse tube cryocooler
    Patent number: 11022353
    Abstract: A rotary valve unit includes a rotary valve and a reversible motor. The rotary valve operates according to a cooling valve timing for cooling a pulse tube cryocooler when the reversible motor rotates in a forward direction and is operated according to a heating valve timing for heating the pulse tube cryocooler when the reversible motor rotates in a backward direction. The cooling valve timing is designed to generate a working gas pressure oscillation in a pulse tube and apply a first phase delay to a working gas displacement oscillation in the pulse tube with respect to the working gas pressure oscillation. The heating valve timing is designed to generate the working gas pressure oscillation in the pulse tube and apply a second different phase delay to the working gas displacement oscillation in the pulse tube with respect to the working gas pressure oscillation.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: June 1, 2021
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Mingyao Xu, Qian Bao, Takaaki Morie
  • Brake drive circuit
    Patent number: 11005391
    Abstract: A drive circuit for an electromagnetic brake is used in a circuit including a motor, a converter converting a DC voltage into an AC voltage to be generated between a pair of DC link buses, and an inverter converting the DC voltage into an AC voltage and driving the motor. A full-bridge circuit has a pair of power supply terminals connected to the pair of DC link buses, and a pair of output terminals connected to the electromagnetic brake.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: May 11, 2021
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventor: Tomohiro Oki
  • Gear motor and assembling method thereof
    Patent number: 10989276
    Abstract: A gear motor includes a speed reducer and a motor. The speed reducer includes an internal gear, an external gear, an input shaft having an oscillating portion oscillating the external gear, an oscillating bearing which is disposed between the external gear and the oscillating portion, and an input bearing which supports the input shaft, the input shaft includes a protrusion portion which protrudes from the motor side such that a rotor of the motor is provided in the protrusion portion, and includes a bearing disposition section in which the input bearing is disposed and a rotor disposition section in which the rotor is disposed in this order from the speed reducer side toward the motor side, an outer diameter of the rotor disposition section is equal to or less than an outer diameter of the bearing disposition section, and a rotor magnet is directly fixed to the rotor disposition section.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: April 27, 2021
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Koji Moritani, Mitsuhiro Tamura
  • Pulse tube cryocooler and method of manufacturing pulse tube cryocooler
    Patent number: 10976080
    Abstract: A pulse tube cryocooler is furnished with a second-stage cooling stage and an insert. The second-stage cooling stage has a lateral-surface opening, and a first heat-exchange surface extending in a sideways direction from the lateral-surface opening into the second-stage cooling stage. The insert includes a base-end portion fixedly fitted into the second-stage cooling stage to plug the lateral-surface opening, and a second heat-exchange surface that extends in the sideways direction from the base-end portion and is disposed inside the second-stage cooling stage, opposing the first heat-exchange surface. Between the first heat-exchange surface and the second heat-exchange surface the insert forms a clearance that flows a working gas, bringing both the first heat-exchange surface and the second heat-exchange surface into contact with the working gas.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: April 13, 2021
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Mingyao Xu, Takashi Hirayama
  • CRYOCOOLER AND FLOW PATH SWITCHING MECHANISM OF CRYOCOOLER
    Publication number: 20210102734
    Abstract: A cryocooler includes a cold head including a displacer movable in an axial direction, a drive piston connected to the displacer to move the displacer in the axial direction, an expansion chamber formed with the displacer, a piston drive chamber formed with the drive piston, a spool valve including a valve drive chamber, a spool that moves between a first position and a second position in response to a pressure of the valve drive chamber, and a pressure control mechanism configured to control a pressure of the valve drive chamber so that the spool reciprocates between the first position and the second position, and to generate a pressure fluctuation having an opposite phase to the pressure fluctuation in the expansion chamber in the piston drive chamber in synchronization with the reciprocation of the spool.
    Type: Application
    Filed: December 16, 2020
    Publication date: April 8, 2021
    Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Mingyao XU, Qian BAO
  • Forming device
    Patent number: 10967414
    Abstract: A forming device that expands a metal pipe material to form a metal pipe includes a die that has an upper die and a lower die, at least one of which is movable, and that form the metal pipe, an electrode that energizes the metal pipe material to heat the metal pipe material, a gas supply part that supplies a gas into the heated metal pipe material to expand the metal pipe material, and a die movement suppressing part that suppresses the movement of the die by an electromagnetic force at least when the energization to the metal pipe material is performed by the electrode.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: April 6, 2021
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Masayuki Saika, Masayuki Ishizuka, Norieda Ueno, Shuji Miyazaki, Koji Moritani, Taizo Yamamoto
  • Forming device
    Patent number: 10967413
    Abstract: A forming device that forms a metal pipe by heating and expanding a metal pipe material includes: a pair of an upper die and a lower die between which the metal pipe material is heated and expanded; upper electrodes and lower electrodes that sandwich both end parts of the metal pipe material therebetween from upper and lower sides to heat the metal pipe material; and a busbar that is connected only to either the upper electrodes or the lower electrodes to supply electric power from a power supply.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: April 6, 2021
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Masayuki Saika, Masayuki Ishizuka, Norieda Ueno
  • Shovel and control method thereof
    Patent number: 10968597
    Abstract: A shovel may include a lower travelling body, an upper swinging body mounted on the lower travelling body, an excavation attachment attached to the upper swinging body, an orientation detecting device configured to detect an orientation of the excavation attachment, and a controller. The controller may have a ground surface shape information obtaining part that obtains information relating to a current shape of an excavation target ground surface based on a transition of the orientation of the excavation attachment detected by the orientation detecting device, and an excavation controlling part that controls the excavation attachment based on the information relating to the current shape of the excavation target ground surface obtained by the ground surface shape information obtaining part.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: April 6, 2021
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventor: Chunnan Wu
  • ROTARY VALVE OF CRYOCOOLER AND CRYOCOOLER
    Publication number: 20210071767
    Abstract: A rotary valve of a cryocooler includes a valve stator, a valve rotor, a rotation member that rotates the valve rotor around an axis with respect to the valve stator, and a rotor holder connected to the valve rotor so as to rotate around an axis together with the valve rotor, and forming a low pressure section having a pressure lower than an ambient pressure between the valve rotor and the rotor holder so as to reduce an axial force of pressing the valve rotor against the valve stator. The rotation member is connected to the rotor holder so as to rotate the valve rotor around the axis via the rotor holder. The rotor holder is disposed between the rotation member and the valve rotor in an axial direction, and is movable in the axial direction with respect to the rotation member.
    Type: Application
    Filed: November 9, 2020
    Publication date: March 11, 2021
    Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Mingyao XU, Qian BAO
  • EXCAVATOR AND METHOD OF CONTROLLING THE SAME
    Publication number: 20210054593
    Abstract: An attachment is attached to an upper turning body. During a normal operation, a drive means drives the attachment according to an input of an operator to a manipulation device. A sensor detects a motion of an excavator. Based on an output of the sensor, the slip suppression unit detects slip of a traveling body in an extension direction of the attachment and corrects an operation of the attachment performed by the drive means.
    Type: Application
    Filed: November 10, 2020
    Publication date: February 25, 2021
    Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventor: Junichi OKADA
  • Forming apparatus
    Patent number: 10926313
    Abstract: A forming apparatus includes: an upper die and a lower die having forming surfaces corresponding to outer surfaces of a pipe with protrusions; a moving mechanism that moves the upper die and the lower die such that a forming space for forming the pipe with protrusions is defined between the forming surfaces of the upper die and the lower die; and a gas supply unit that supplies gas to a forming material to expand the forming material. A control unit controls the movement of the upper die and the lower die by the moving mechanism and the supply of gas to the forming material by the gas supply unit such that the forming material is formed into the pipe with protrusions in the forming space.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: February 23, 2021
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Masayuki Ishizuka, Norieda Ueno, Masayuki Saika
  • Simulation method, simulation unit, and program
    Patent number: 10922378
    Abstract: A change in a current flowing through a current path when a voltage applied to the path is changed is simulated in a system including the path and a member that is acted upon by the current flowing through the path and affects the current flowing through the path. First, the path and the member are represented by aggregates of a plurality of particles. Electromagnetic action from the other particles to each of the plurality of particles configuring the path is calculated based on a current value at a present time of the current flowing through the path and a voltage value of an external voltage applied to the path. The current flowing through the path is calculated based on a calculation result of the electromagnetic action to update the current value flowing through the path from the value at the present time to a value obtained by a calculation.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: February 16, 2021
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventor: Shuji Miyazaki
  • Capacitive actuator motor, capacitive actuator, and capacitive actuator unit
    Patent number: 10924038
    Abstract: A capacitive actuator motor according to an embodiment of the present invention includes a capacitive actuator having six actuator units and a motor output cam having a periodic shape portion. Each of the six actuator units includes a buckling displacement expansion mechanism configured to convert an output of a piezoelectric element and urge an output joint in a predetermined output direction and a preload adjustment spring configured to urge an output joint with a certain characteristic in a direction in which the periodic shape portion and the output joint come into contact with each other.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: February 16, 2021
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventor: Shinichiro Tsukahara
  • Movable platen cooling apparatus and movable platen cooling system
    Patent number: 10921041
    Abstract: A movable platen cooling apparatus includes: a compressor; a cold head that includes a cooling part; a refrigerator gas supply line that supplies a refrigerant gas from the compressor to the cold head; a refrigerator gas exhaust line that exhausts the refrigerant gas from the cold head to the compressor; a first gas inflow line that is connected to a first movable platen flow path and includes a heat exchange part thermally coupled to the cooling part; a first gas outflow line connected to the first movable platen flow path and merged with the refrigerator gas exhaust line; a second gas inflow line connected to a second movable platen flow path and disposed to be thermally non-coupled with the cooling part; and a second gas outflow line connected to the second movable platen flow path and merged with the refrigerator gas exhaust line.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: February 16, 2021
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventor: Ken Oikawa
  • Cryocooler
    Patent number: 10876769
    Abstract: A cryocooler includes: a housing furnished with a housing bottom surface; a displacer furnished with a displacer upper surface between the housing bottom surface and which an upper gas chamber is formed, and being enabled to reciprocate axially with respect to the housing; a housing gas flow path formed in the housing and opening onto the upper gas chamber; a displacer upper gas flow path formed in the displacer and opening onto the upper gas chamber; and a gas-guiding flow channel formed in at least either the housing bottom surface or the displacer upper surface constituting a portion of the upper gas chamber, and interconnecting the housing gas flow path and the displacer upper gas flow path when the displacer is positioned at top-dead center in its axial reciprocation.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: December 29, 2020
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventor: Koji Yamada
  • CRYOCOOLER AND CRYOCOOLER PIPE SYSTEM
    Publication number: 20200393168
    Abstract: There is provided a cryocooler including a first compressor, a second compressor, a cold head that has a high pressure port and a low pressure port, a high pressure line that is configured such that a refrigerant gas is able to flow from the first compressor and the second compressor to the high pressure port of the cold head via a merging portion, the high pressure line including a first high pressure sub-line and a second high pressure sub-line, and a low pressure line that is configured such that the refrigerant gas is able to flow from the low pressure port of the cold head to the first compressor and the second compressor via a diverting portion, the low pressure line including a first low pressure sub-line and a second low pressure sub-line.
    Type: Application
    Filed: August 27, 2020
    Publication date: December 17, 2020
    Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventor: Toru MARUYAMA