Patents Assigned to Giken Co., Ltd.
  • Patent number: 12344491
    Abstract: In a work assisting apparatus helping workers to lift heavy objects with hands, their work is assisted with a light-weight and simply configured winding device, contributing to cost and load reduction while refraining a belt as a support wire rope from hindering their normal working behavior, or another objects from being caught in or wound around the belt, the work assisting apparatus including: a fitting portion fitted on a torso, a wearing portion worn on an arm or a hand of a worker, a belt with one end portion combined to the wearing portion, and a winding device coupled to the fitting portion and winding another end side of the belt. The winding device includes a lock mechanism locking a draw-out position of the belt so as to restrict further drawing out when drawing the one end portion.
    Type: Grant
    Filed: June 16, 2023
    Date of Patent: July 1, 2025
    Assignee: Yutaka Giken Co., Ltd.
    Inventors: Yoichi Nozawa, Hiroharu Nakahara, Kentaro Watanabe, Koki Hirakawa
  • Patent number: 12257758
    Abstract: A die has an inner die that has a straight portion of circular columnar outer shape and a convergent tapered portion provided closer to an extrusion port side than the straight portion and an outer die that houses the inner die. A first supply passage connecting a first valve and a flow passage, a second supply passage connecting a second valve and the flow passage, and a third supply passage connecting a third valve and the flow passage are provided inside the die. Downstream side end portions of the first supply passage and the second supply passage are connected to a portion of the flow passage formed between the straight portion and the outer die and a downstream side end portion of the third supply passage is connected to a portion of the flow passage formed between the tapered portion and the outer die.
    Type: Grant
    Filed: January 30, 2023
    Date of Patent: March 25, 2025
    Assignee: PLA GIKEN CO., LTD.
    Inventor: Yoshiharu Kikuzawa
  • Patent number: 12138844
    Abstract: Provided is a flexible tube production apparatus capable of shortening the length of a resin layer in which the mixing ratio between two kinds of resins changes. The flexible tube production apparatus includes: two extruders extruding resins different from each other; two valves provided corresponding to the two extruders, respectively; a kneading mechanism kneading the resins supplied from the two extruders via the two valves; a die extruding the resins kneaded by the kneading mechanism; and a control device controlling the two valves to switch from a first state where one extruder and the kneading mechanism communicate with each other and communication between the other extruder and the kneading mechanism is cut off, to a second state where the other extruder and the kneading mechanism communicate with each other and communication between the one extruder and the kneading mechanism is cut off, when the flexible tube is extruded.
    Type: Grant
    Filed: August 3, 2021
    Date of Patent: November 12, 2024
    Assignee: PLA GIKEN CO., LTD.
    Inventor: Yoshiharu Kikuzawa
  • Patent number: 12078262
    Abstract: An operation valve includes a valve formed into a rod shape and including a barrel portion in which a flow path for a fluid is provided, a head portion in which an inlet of the flow path is provided, and a leg portion in which an outlet of the flow path is provided, a housing body housing the barrel portion, and an operation dial screw coupled to the housing body and moving the valve in an extension direction of the valve.
    Type: Grant
    Filed: December 19, 2022
    Date of Patent: September 3, 2024
    Assignee: FUMOTO GIKEN CO., LTD.
    Inventor: Ryohei Yamamoto
  • Patent number: 12070835
    Abstract: Provided is an optical fiber ferrule polishing jig capable of fixing an optical fiber ferrule and releasing the optical fiber ferrule. An optical fiber ferrule polishing jig 10A has; a base 12a having insertion holes 20 into which optical fiber ferrules 51 can be detachably inserted; pivoting rods 13 which are adjacent to the insertion holes 20 of the base 12a and rotatable around lower end portions 36; fixing pieces 14a installed in installation recesses 19a formed in the base 12a to fix the optical fiber ferrules 51 with respect to the insertion holes 20 by being moved as the rods are pivoted; and a plurality of coil springs 15a installed in the installation recesses 19a to bias the fixing pieces 14a so as to release fixing of the optical fiber ferrules 51 with respect to the insertion holes 20.
    Type: Grant
    Filed: June 17, 2022
    Date of Patent: August 27, 2024
    Assignee: SEIKOH GIKEN Co., Ltd.
    Inventor: Yuji Shibutani
  • Patent number: 12023625
    Abstract: An absorption type carbon dioxide removal and concentration device can remove or concentrate a carbon dioxide throughout four seasons and can be manufactured with a relatively simple structure. The device includes a carbon dioxide removal rotor that holds a carbon dioxide absorbent. The rotor is divided into at least a treatment zone and a regeneration zone. Air to be treated is ventilated through the treatment zone, so that carbon dioxide contained in the air to be treated is absorbed by a holding absorbent of the rotor portion, so that the CO2 can be separated and removed from the air to be treated. In the regeneration zone, regeneration air is ventilated, so that the carbon dioxide absorbed by the holding absorbent in the treatment zone is desorbed with the regeneration air to regenerate the holding absorbent. A total heat exchanger recovers latent heat and sensible heat from the regeneration exhaust.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: July 2, 2024
    Assignee: SEIBU GIKEN CO., LTD.
    Inventor: Koji Inoue
  • Patent number: 11988537
    Abstract: A powder supply device that continuously supply a fixed amount of powder, including a powder accommodation container including a powder delivery hole in an circular outer shape bottom plate, and a disk that continuously rotates and conveys the powder by a groove facing the powder delivery hole and provided on circumference, wherein the disk is disposed to be slidably rotatable with respect to the circular outer shape bottom plate in a state in which a part of a region where the groove is located is covered with the circular outer shape bottom plate of the powder accommodation container.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: May 21, 2024
    Assignee: Plasma Giken Co., Ltd.
    Inventor: Hirotaka Fukanuma
  • Patent number: 11892684
    Abstract: A tool for a plug, including a plug body fitted to an adapter and a slider supported on the plug body, includes an insertion portion and a handle. The insertion portion is configured to catch the slider. The handle extends in a direction opposite to the insertion portion. The handle includes a fragile part having a locally small cross-sectional area perpendicular to the direction in which the handle extends.
    Type: Grant
    Filed: January 12, 2023
    Date of Patent: February 6, 2024
    Assignee: SEIKOH GIKEN CO., LTD.
    Inventors: Junji Taira, Masayuki Jibiki, Naotoshi Shiokawa
  • Patent number: 11806906
    Abstract: In a parting locking device for an injection molding mold assembly, a first engagement element and a first spring are mounted in the base holder. With a locking plate inserted in a plate insertion hole, the first engagement element moves to a locking position where the base holder and a locking member are coupled together. When a locking bar is pulled out of a bar insertion hole, the first engagement element is pushed and moved to an unlocking position where the base holder and the locking member are uncoupled from each other.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: November 7, 2023
    Assignee: AIYUKI GIKEN CO., LTD.
    Inventor: Masatoshi Nishimura
  • Publication number: 20230345608
    Abstract: An electronic device of the present invention is an electronic device used around a neutralization target object, the electronic device includes: an electric part; an interconnection portion that transmits electric power of a high voltage power supply to the electric part; and a housing that accommodates the electric part and the interconnection portion, in which the electronic device includes at least one of a cover portion, which covers at least a part of the electric part and has a surface resistivity of equal to or higher than 104 ?/? and equal to or lower than 1011 ?/?, and the housing, which has a surface resistivity of equal to or higher than 104 ?/? and equal to or lower than 1011 ?/?.
    Type: Application
    Filed: June 16, 2021
    Publication date: October 26, 2023
    Applicants: MATSUMOTO GIKEN CO., LTD., SHISHIDO ELECTROSTATIC, LTD.
    Inventors: Yorioki MATSUMOTO, Nobuhiro MATSUMOTO, Shinichi YAMAGUCHI, Ryuichi TAKEUCHI
  • Patent number: 11796744
    Abstract: An optical fiber ferrule polishing holder for suppressing difference of protruded lengths of optical fiber ferrules protruded from the optical fiber ferrule polishing holder and difference of angles of the optical fiber ferrules. Even when force is applied to cables connected to the optical fiber ferrules, polishing performance of connectors is less affected. An optical fiber ferrule polishing holder for holding an optical fiber ferrule incorporated in a connector, including: a holder body having a plate shape; and an adapter fixed to the holder body so that the connector is locked to the adapter, wherein the holder body includes an insertion hole into which the optical fiber ferrule is inserted, and an upper surface of the holder body presses the optical fiber ferrule at a peripheral position of the insertion hole to contract a spring built in the connector when the connector is locked to the adapter.
    Type: Grant
    Filed: May 23, 2022
    Date of Patent: October 24, 2023
    Assignee: SEIKOH GIKEN Co., Ltd.
    Inventor: Naoto Furuta
  • Patent number: 11794144
    Abstract: A CO2 concentration device has an adsorbent body formed from sheet material. Solid adsorbent particles are adhered onto at least a single surface of the sheet material and then the sheet material is wound onto itself or laminated in layers. The adsorbent body is divided into at least into a processing zone and a regeneration zone. CO2 is adsorbed in the processing zone when the processing zone is wet with water and a CO2 containing gas is passed through. The regeneration zone desorbs CO2 when saturated steam is passed through. Condensation heat from the steam condensing causes CO2 desorption. The solid adsorbent particles may be aligned in a linear or a staggered arrangement when the solid adsorbent particles are adhered to the sheet material to follow a gas flow and form gas introduction paths between adjacent layers of the sheet material.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: October 24, 2023
    Assignee: SEIBU GIKEN CO., LTD.
    Inventor: Hiroshi Okano
  • Patent number: 11789213
    Abstract: An end face polishing device for optical fiber ferrule for polishing an end face of an optical fiber ferrule by applying a polishing pressure between a polishing plate driven by a polishing drive shaft and an optical fiber ferrule held by a holding portion. The end face polishing device has: a bearing portion for allowing the polishing plate to rotate relatively around the polishing drive shaft and to move relatively to the polishing drive shaft in an axial direction; a polishing plate guide supporting portion for movably supporting the polishing plate on a base portion to apply the polishing pressure to the holding portion by allowing the polishing plate to move in the axial direction; a pressing drive source for outputting a driving force to apply the polishing pressure; and a pressing force transmission mechanism for transmitting the driving force output from the pressing drive source as a pressing force in the axial movement direction of the polishing plate.
    Type: Grant
    Filed: September 8, 2022
    Date of Patent: October 17, 2023
    Assignee: SEIKOH GIKEN Co., Ltd.
    Inventors: Atsushi Yamada, Yuji Shibutani
  • Patent number: 11781849
    Abstract: An inspection master can perform three- and five-axis measurements wherein measurement in a rotation axis or/and turning axis direction for a five-axis processing machine is added. In one aspect, peripheral-surface spherical reference portions protrudes laterally on a peripheral surface of a master main body having a tubular shape, including the peripheral surface and an upper surface, and an upper reference ball for detection of an inclination angle of the body protrudes upward on the upper surface. The reference portions are provided at two or more portions of the peripheral surface in a circumferential direction thereof. In another aspect, an upper reference ball protrudes upward on the upper surface, and upper-surface spherical reference portions protrudes upward at one or more portions of the upper surface on an outer side with respect to the ball. In another aspect, both the peripheral-surface and upper-surface spherical reference portions are on the master main body.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: October 10, 2023
    Assignee: ASANUMA GIKEN CO., LTD.
    Inventor: Susumu Asanuma
  • Patent number: 11767899
    Abstract: In a power transmission device, a dynamic damper is provided in a power transmission path having at least one damper disposed therein, and has an inertial rotating body that can rotate relative to a transmission rotating member forming part of the power transmission path, and a dynamic damper spring that can provide connection between the transmission rotating member and the inertial rotating body. A preset load is applied to the dynamic damper spring in a non-transmitting state of the power transmission path. The dynamic damper spring is supported on either one of the transmission rotating member and the inertial rotating body so as to apply the preset load to the dynamic damper spring in the non-transmitting state, and a gap is set in a rotational direction in the non-transmitting state between the dynamic damper spring and an other one of the transmission rotating member and the inertial rotating body.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: September 26, 2023
    Assignee: Yutaka Giken Co., Ltd.
    Inventors: Kentaro Watanabe, Kazuto Nagaishi, Makoto Hiruta, Tatsuya Muramatsu
  • Publication number: 20230220927
    Abstract: An operation valve includes a valve formed into a rod shape and including a barrel portion in which a flow path for a fluid is provided, a head portion in which an inlet of the flow path is provided, and a leg portion in which an outlet of the flow path is provided, a housing body housing the barrel portion, and an operation dial screw coupled to the housing body and moving the valve in an extension direction of the valve.
    Type: Application
    Filed: December 19, 2022
    Publication date: July 13, 2023
    Applicant: FUMOTO GIKEN CO., LTD.
    Inventor: Ryohei YAMAMOTO
  • Patent number: 11629800
    Abstract: A double pipe includes an outer pipe in which an inner pipe is placed, and a spacer that maintains a clearance between the inner pipe and the outer pipe. At least a part of the spacer is press-fitted by an inner circumferential surface of the outer pipe and an outer circumferential surface of the inner pipe. More specifically, the outer pipe includes a diameter-reduced portion having undergone diameter reduction by plasticity processing. An inner circumferential surface of the diameter-reduced portion is present across the entire circumference other than the opening of the spacer, and presses an outer circumferential surface of the spacer inwardly in the radial direction.
    Type: Grant
    Filed: July 21, 2021
    Date of Patent: April 18, 2023
    Assignee: YUTAKA GIKEN CO., LTD.
    Inventors: Koji Yamamoto, Takashi Wagatsuma, Ryoji Noda
  • Patent number: 11597132
    Abstract: A flexible tube production apparatus includes a die composed of: a cylindrical inner die having an outer face in which a groove is formed; a tubular member that is housed inside the inner die, and has a through-hole that allows a blade wire to be inserted from one end to the other end thereof; and an outer die that surrounds the inner die such that a predetermined gap is generated between itself and the outer face of the inner die, and has an extrusion hole that extrudes the resins having been supplied to the gap, onto the outer face of the blade wire that is fed from the other end of the tubular member. A resin supply portion supplies a first resin and a second resin to the die while the motor rotates the inner die about a center axis.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: March 7, 2023
    Assignee: PLA GIKEN CO., LTD.
    Inventor: Yoshiharu Kikuzawa
  • Patent number: D980167
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: March 7, 2023
    Assignee: SEIKOH GIKEN CO., LTD.
    Inventor: Junji Taira
  • Patent number: D1010696
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: January 9, 2024
    Assignee: GIKEN CO., LTD
    Inventor: Yoshikazu Ishikawa