Patents by Inventor Kazufumi Waki

Kazufumi Waki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Pressure-booster output stabilizer
    Patent number: 11661960
    Abstract: A pressure-booster output stabilizer includes: a first cylinder having therein a first chamber and a second chamber separated by a first piston; a second cylinder having therein a third chamber and a fourth chamber separated by a second piston; and a piston rod configured to couple the first piston and the second piston. The primary pressure of a pressure booster is supplied to the first chamber, the secondary pressure of the pressure booster is supplied to the fourth chamber, and the pressurized fluid is taken out from the fourth chamber.
    Type: Grant
    Filed: March 24, 2021
    Date of Patent: May 30, 2023
    Assignee: SMC CORPORATION
    Inventors: Youji Takakuwa, Kazufumi Waki
  • PRESSURE-BOOSTER OUTPUT STABILIZER
    Publication number: 20210301839
    Abstract: A pressure-booster output stabilizer includes: a first cylinder having therein a first chamber and a second chamber separated by a first piston; a second cylinder having therein a third chamber and a fourth chamber separated by a second piston; and a piston rod configured to couple the first piston and the second piston. The primary pressure of a pressure booster is supplied to the first chamber, the secondary pressure of the pressure booster is supplied to the fourth chamber, and the pressurized fluid is taken out from the fourth chamber.
    Type: Application
    Filed: March 24, 2021
    Publication date: September 30, 2021
    Applicant: SMC CORPORATION
    Inventors: Youji TAKAKUWA, Kazufumi WAKI
  • GUIDE UNIT FOR ACTUATOR
    Publication number: 20170152872
    Abstract: A guide unit for an actuator includes a slide part and a guide part. The actuator includes a drive rod extending from a cylinder main body. The slide part includes: a slider detachably connected to the drive rod; and a guide rod fixed to the slider. The guide part includes: a guide plate fixed to the cylinder main body; and a guide tube fixed to the guide plate. The guide rod is slidably inserted into the guide tube.
    Type: Application
    Filed: May 22, 2015
    Publication date: June 1, 2017
    Applicant: SMC CORPORATION
    Inventor: Kazufumi WAKI
  • Cylinder apparatus
    Patent number: 7021192
    Abstract: A pair of throttle valves are installed to first and second installation holes of a cylinder tube, respectively. The throttle valve comprises a rotatable member, a needle which is engaged with the rotatable member and which controls the flow rate of a pressure fluid flowing through first and second bypass passages formed in each of the first and second installation holes, a covering member which covers each of said first and second installation holes, and a stopper ring which prevents the displacement of the rotatable member.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: April 4, 2006
    Assignee: SMC Kabushiki Kaisha
    Inventors: Kazushi Kita, Jun Yamada, Kazufumi Waki, Kouhei Toyohara, Yuuya Osamura
  • Cylinder apparatus
    Publication number: 20040237774
    Abstract: A pair of throttle valves are installed to first and second installation holes of a cylinder tube, respectively. The throttle valve comprises a rotatable member, a needle which is engaged with the rotatable member and which controls the flow rate of a pressure fluid flowing through first and second bypass passages formed in each of the first and second installation holes, a covering member which covers each of said first and second installation holes, and a stopper ring which prevents the displacement of the rotatable member.
    Type: Application
    Filed: February 25, 2004
    Publication date: December 2, 2004
    Applicant: SMC Kabushiki Kaisha
    Inventors: Kazushi Kita, Jun Yamada, Kazufumi Waki, Kouhei Toyohara, Yuuya Osamura
  • Air cylinder
    Patent number: D540349
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: April 10, 2007
    Assignee: SMC Corporation
    Inventor: Kazufumi Waki
  • Fluid pressure cylinder
    Patent number: D542682
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: May 15, 2007
    Assignee: SMC Corporation
    Inventor: Kazufumi Waki
  • Fluid pressure cylinder
    Patent number: D500258
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: December 28, 2004
    Assignee: SMC Kabushiki Kaisha
    Inventors: Kazushi Kita, Jun Yamada, Kazufumi Waki, Kouhei Toyohara, Yuuya Osamura
  • Fluid pressure cylinder
    Patent number: D500259
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: December 28, 2004
    Assignee: SMC Kabushiki Kaisha
    Inventors: Kazushi Kita, Jun Yamada, Kazufumi Waki, Kouhei Toyohara, Yuuya Osamura
  • Fluid pressure cylinder
    Patent number: D888775
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: June 30, 2020
    Assignee: SMC CORPORATION
    Inventors: Soichi Sato, Ken Tamura, Makoto Yaegashi, Kazufumi Waki, Naoki Shinjo, Seiichi Nagura, Kenta Onuki
  • Fluid pressure cylinder
    Patent number: D890213
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: July 14, 2020
    Assignee: SMC CORPORATION
    Inventors: Soichi Sato, Ken Tamura, Makoto Yaegashi, Kazufumi Waki, Naoki Shinjo, Seiichi Nagura, Kenta Onuki
  • Fluid pressure cylinder
    Patent number: D890214
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: July 14, 2020
    Assignee: SMC CORPORATION
    Inventors: Soichi Sato, Ken Tamura, Makoto Yaegashi, Kazufumi Waki, Naoki Shinjo, Seiichi Nagura, Kenta Onuki
  • Fluid pressure cylinder
    Patent number: D890215
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: July 14, 2020
    Assignee: SMC CORPORATION
    Inventors: Soichi Sato, Ken Tamura, Makoto Yaegashi, Kazufumi Waki, Naoki Shinjo, Seiichi Nagura, Kenta Onuki