Patents Assigned to SMC Corporation
  • Publication number: 20220018341
    Abstract: In a cylinder drive device, a throttle valve and a second check valve are provided between a switch valve and a first cylinder chamber of a fluid pressure cylinder. The cylinder drive device has a flow channel unit which is interposed between a manifold and the switch valve, which allows communication between the throttle valve and the second check valve and switch valve, and which communicates with a plurality of holes in the manifold to allow a fluid to flow to the switch valve.
    Type: Application
    Filed: October 10, 2019
    Publication date: January 20, 2022
    Applicant: SMC CORPORATION
    Inventors: Hiroyuki ASAHARA, Kazutaka SOMEYA
  • Patent number: 11225889
    Abstract: A silencer is equipped with a hollow tubular portion in which a discharge flow passage is formed that communicates on one end side thereof with a discharge port of a fluid pressure device (ejector) through which a pressure fluid is discharged, a cap member attached to another end part of the tubular portion, a sound absorbing member attached to an inner wall surface of the tubular portion, and a plurality of discharge ports adapted to discharge the pressure fluid, which has passed through the discharge flow passage in an axial direction of the tubular portion, in radial directions perpendicular to the axial direction.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: January 18, 2022
    Assignee: SMC CORPORATION
    Inventors: Toru Nakayama, Koji Sugano, Masayuki Enomoto, Masayoshi Yamamoto
  • Publication number: 20220003464
    Abstract: There are a first coolant circuit that supplies a first coolant in a first tank to a first load, a second coolant circuit that supplies a second coolant in a second tank to a second load, and a refrigeration circuit that adjusts temperatures of the first and second coolants to set temperatures by heat exchange between the first and second coolants and refrigerants by using heat exchangers. The set temperature of the second coolant is equal to the set temperature of the first coolant or higher than the set temperature of the second coolant, and the set flow rate of the first coolant is higher than the set flow rate of the second coolant, and the volume of the first tank is larger than the volume of the second tank.
    Type: Application
    Filed: March 26, 2019
    Publication date: January 6, 2022
    Applicant: SMC CORPORATION
    Inventor: Tetsuo SAKAGUCHI
  • Patent number: 11215204
    Abstract: A piston unit is provided with a piston body; a packing mounted on an outer circumferential portion of the piston body; a holding member having a plurality of magnet holding portions that are arranged along a circumferential direction; a plurality of magnets which are held at intervals in the circumferential direction; a first annular yoke disposed on one side in an axial direction of the plurality of magnets; and a second annular yoke disposed on the other side in the axial direction of the plurality of magnets.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: January 4, 2022
    Assignee: SMC CORPORATION
    Inventor: Ken Tamura
  • Publication number: 20210404486
    Abstract: A main flow path that introduces high-pressure air to an air cylinder, or discharges exhaust air therefrom, includes a sub flow path provided alongside the main flow path; an exhaust flow rate adjustment unit that suppresses the operation speed of the air cylinder by adjusting the flow rate of the exhaust air flowing through the sub flow path; and a switching valve that is connected between the air cylinder, the main flow path and the sub flow path, and that connects the main flow path and the sub flow path to the air cylinder in a switching manner. The switching valve is constituted by a spool valve.
    Type: Application
    Filed: October 30, 2019
    Publication date: December 30, 2021
    Applicant: SMC CORPORATION
    Inventors: Youji TAKAKUWA, Akihiro KAZAMA, Hiroyuki ASAHARA, Kengo MONDEN
  • Publication number: 20210396329
    Abstract: Latch protrusions of an upper surface wall are latched into latch recesses of a first front-surface half wall and an upper end portion of a second front-surface half wall of a magnetic cover, and latch protrusions of the upper surface wall are latched into latch recesses of a first rear-surface half wall and an upper end portion of a second rear-surface half wall of the magnetic cover. Hook portions of the first front-surface half wall and a lower end portion of the second front-surface half wall are folded into a coupling groove of the valve body, and hook portions of the first rear-surface half wall and a lower end portion of the second rear-surface half wall are folded into a coupling groove of the valve body.
    Type: Application
    Filed: October 11, 2019
    Publication date: December 23, 2021
    Applicant: SMC CORPORATION
    Inventors: Minehiko MITA, Masaki MORIMOTO
  • Nut
    Patent number: 11204056
    Abstract: A layered nut (10) comprises a plurality of thin nuts (12) formed with through-holes (16) having almost the same diameter. On the inner peripheral surface of each thin nut (12), a plurality of screw threads (18, 38) are formed at predetermined angular spacing so as to protrude toward the inside of the through-hole (16). In this case, the thin nuts (12) are layered along the direction of the central axis (14) so that the through-holes (16) become approximately coaxial. The outer peripheral surfaces of the layered thin nuts (12) are subjected to laser welding or the like, thereby joining the thin nuts (12) and completing the layered nut (10).
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: December 21, 2021
    Assignee: SMC CORPORATION
    Inventors: Toru Nakayama, Ryuichi Masui, Naohiro Ishizawa
  • Publication number: 20210388855
    Abstract: A gas cylinder includes supply passages for supplying, to an accommodation chamber, a part of gas supplied to a second port. When the pressure in a first pressure chamber is equal to or lower than a prescribed pressure, a valve element closes a discharge flow passage by the biasing force of a spring member and the pressure in the accommodation chamber. When the pressure in the first pressure chamber exceeds the prescribed pressure, the valve element is moved by the pressure in the first pressure chamber, against the biasing force and the pressure in the accommodation chamber, to thereby open the discharge flow passage.
    Type: Application
    Filed: June 8, 2021
    Publication date: December 16, 2021
    Applicant: SMC CORPORATION
    Inventors: Youji TAKAKUWA, Naoki SHINJO, Akihiro KAZAMA
  • Publication number: 20210388907
    Abstract: [Object] To provide a gate valve in which a valve plate can be detached from a valve rod easily and reliably even if the valve rod is tightly inserted in a valve-plate mounting hole. [Solution] In a gate valve in which a valve plate 3 and a valve rod 4 are detachably connected along a rod axis L by screwing a connecting screw 14 in a screw hole 21 formed at an end of a valve rod 4 along the rod axis L through a screw insertion hole 18 formed in a valve plate 3, the valve plate 3 includes a contact portion 25 that is in contact with the connecting screw 14, and when the connecting screw 14 is loosened to detach the valve plate 3 from the valve rod 4, the valve plate 3 is displaced along the rod axis L together with the connecting screw 14 by an impellent force of the connecting screw 14 via the contact portion 25 to move to a valve-plate detaching position at which the connecting screw 14 comes out of the screw hole 21 of the valve rod 4 completely.
    Type: Application
    Filed: June 8, 2021
    Publication date: December 16, 2021
    Applicant: SMC CORPORATION
    Inventors: Hiroshi OGAWA, Takashi NAGAO
  • Publication number: 20210379735
    Abstract: A clamping device includes a body, a clamp arm and a drive mechanism that includes a displacement body displaced linearly, wherein the clamp arm is rotated based on the displacement of the displacement body. The displacement body includes a guide surface for guiding the rotation of the clamp arm, and also for controlling the rotation of the clamp arm while the clamp arm is in a clamping state. The clamping device further includes a push mechanism disposed at a position facing a lever arm and elastically pushing the displacement body toward the lever arm.
    Type: Application
    Filed: September 30, 2019
    Publication date: December 9, 2021
    Applicant: SMC CORPORATION
    Inventor: Takeshi SEO
  • Patent number: 11193607
    Abstract: In a fluid control valve, a cylinder chamber includes a first pilot chamber extending from a piston in one of sliding directions. An opening of a first pilot port allowing supply and discharge of fluid is formed in the inner wall of the first pilot chamber. The fluid is accommodated in the first pilot chamber when the piston is in a valve open position, and discharged via the opening when the piston is displaced toward a valve closed position. At least one of the piston and a valve body includes a throttle portion forming, between the piston and the valve body, a throttle path having a cross-sectional area smaller than the area of the opening, after the piston starts being displaced from the valve open position toward the valve closed position.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: December 7, 2021
    Assignee: SMC CORPORATION
    Inventors: Yoshitada Doi, Yuzuru Okita, Yoji Niimi, Hirofumi Ueda, Tsugumichi Fujiwara
  • Patent number: 11181127
    Abstract: The present invention allows the number of components to be reduced and assembly work to be easily performed. A cylinder drive manifold device that constitutes a cylinder drive apparatus is provided with a block-shaped manifold in which a plurality of holes are formed for circulating a fluid used for driving a plurality of fluid pressure cylinders. The manifold is configured such that a plurality of switching valves for supplying a fluid alternately to a first cylinder chamber and a second cylinder chamber of each of the fluid pressure cylinders are attachable. A plurality of check valves and a plurality of throttle valves are incorporated into the plurality of holes of the manifold.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: November 23, 2021
    Assignee: SMC CORPORATION
    Inventors: Hiroyuki Asahara, Kazutaka Someya
  • Publication number: 20210355993
    Abstract: An actuator is equipped with a body and a slider. Body side rail grooves are formed in side wall portions that constitute the body. On the other hand, slider side rail grooves are formed in the slider. Body side guide rails and slider side guide rails are provided in the body side rail grooves and the slider side rail grooves, respectively. Circular arc grooves serving as ball grooves are formed by body side ball receiving portions of the body side guide rails, and slider side ball receiving portions of the slider side guide rails.
    Type: Application
    Filed: May 10, 2021
    Publication date: November 18, 2021
    Applicant: SMC CORPORATION
    Inventors: Toshio SATO, Naoki KOUTA, Masaki MIYAHARA, Masaki IMAMURA, Tsuyoshi MITA
  • Patent number: 11174950
    Abstract: A spacer having a wedge-shaped flat plate portion and an engagement protrusion is interposed between a hole end surface of mounting hole of a valve plate and a rod end surface of mounting portion of a valve rod, which thereby forms a wedge-shaped gap between the spacer and the hole end surface so as to open frontward. A fastening force of a valve-plate fixation screw generates a moment M that deforms the valve plate in a direction of narrowing the gap. At the same time, the engagement protrusion of the spacer is pressed into a wedge-shaped space between the inclined surface portion of the rod end surface and the rear hole-wall surface of the mounting hole, which causes the front hole-wall surface of mounting hole of the valve plate to press the rod front surface of mounting portion of the valve rod.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: November 16, 2021
    Assignee: SMC CORPORATION
    Inventors: Hiromi Shimoda, Hiroshi Ogawa, Takashi Nagao, Tsuyoshi Ochi
  • Patent number: 11174972
    Abstract: A pipe joint includes a joint body formed with a through hole therein along an axial direction, and having male threads and an extending shaft portion formed on one end side thereof; and a nut member formed with an insertion hole through which a tube member is inserted, and having female threads formed therein that screw-engage with the male threads. Annular projections are formed on an outer circumferential surface of the extending shaft portion, and the tube member, which is expanded in diameter, is gripped between the annular projections and an inner circumferential surface of the nut member.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: November 16, 2021
    Assignee: SMC Corporation
    Inventors: Yuzuru Okita, Keisuke Ikeda
  • Patent number: 11168715
    Abstract: In a hydrostatic pressure cylinder, a holding member which holds a magnet is mounted on a piston unit to rotate together with a cylinder tube. The cylinder tube is capable of rotating with respect to a rod cover and a head cover. It is thereby possible to change an attachment position of a magnetic sensor by rotating the cylinder tube.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: November 9, 2021
    Assignee: SMC CORPORATION
    Inventor: Yumiko Ichikawa
  • Patent number: 11167385
    Abstract: When pressurized fluid is not supplied into or discharged from the first channel 28a of the piston rod 28, that is, when the first channel 28a is isolated from the outside, the cylinder tube 22 is in a stopped state. At this time, fluid inside the first cylinder chamber 36a is compressed, and the pressure is increased accordingly to match the sum of the weights of the cylinder tube 22, the table 18, and the workpiece W.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: November 9, 2021
    Assignee: SMC CORPORATION
    Inventors: Hiroshi Uota, Takanori Nishi
  • Patent number: D935560
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: November 9, 2021
    Assignee: SMC CORPORATION
    Inventors: Minehiko Mita, Seietsu Sumiyoshi, Naoyuki Maeda
  • Patent number: D938357
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: December 14, 2021
    Assignee: SMC CORPORATION
    Inventors: Tomohiko Aki, Yuko Kochi, Norimasa Ozaki
  • Patent number: D941449
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: January 18, 2022
    Assignee: SMC CORPORATION
    Inventors: Takashi Yasuoka, Suguru Konno