Patents by Inventor Yoshifumi Ohtsu

Yoshifumi Ohtsu 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).

  • Patent number: 11266280
    Abstract: A needle screw fitted to a compressed fluid supply part that is provided on a nozzle main body of a dust removing device adjusts the jet flow rate of a first compressed fluid from a jet nozzle by adjusting the flow path area of a first fluid supply path. Meanwhile, the suction flow rate of a second compressed fluid to be discharged into a discharge flow path is adjusted by adjusting the flow path area of a second fluid supply path by turning a nozzle main body-side adjustment screw that is provided on the nozzle main body and a suction nozzle-side adjustment screw that is provided on a suction nozzle.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: March 8, 2022
    Assignee: SMC CORPORATION
    Inventors: Yoshifumi Ohtsu, Toru Nakayama, Shigeyuki Eguchi, Koichi Konno, Junichi Inaba, Akio Saitoh, Koji Sugano, Yosuke Shirai, Masayoshi Yamamoto
  • Publication number: 20200069123
    Abstract: A needle screw fitted to a compressed fluid supply part that is provided on a nozzle main body of a dust removing device adjusts the jet flow rate of a first compressed fluid from a jet nozzle by adjusting the flow path area of a first fluid supply path. Meanwhile, the suction flow rate of a second compressed fluid to be discharged into a discharge flow path is adjusted by adjusting the flow path area of a second fluid supply path by turning a nozzle main body-side adjustment screw that is provided on the nozzle main body and a suction nozzle-side adjustment screw that is provided on a suction nozzle.
    Type: Application
    Filed: April 6, 2017
    Publication date: March 5, 2020
    Applicant: SMC CORPORATION
    Inventors: Yoshifumi OHTSU, Toru NAKAYAMA, Shigeyuki EGUCHI, Koichi KONNO, Junichi INABA, Akio SAITOH, Koji SUGANO, Yosuke SHIRAI, Masayoshi YAMAMOTO
  • Patent number: 6409575
    Abstract: An apparatus main body has a surface plate, a vertical shaft and an arm coupled to the vertical shaft such that it can move in the vertical direction. A spline shaft is attached to the arm such that it can move in the vertical direction. A keeper for holding a workpiece is attached to the lower end of the spline shaft. A reference position sensor for detecting the position of the top surface of a reference base as a reference position and a workpiece dimension sensor for detecting the position of the top surface of the keeper as a position associated with a dimension of the workpiece are attached to the arm. During a process on the workpiece, the absolute dimension of the workpiece is recognized based on information detected by the sensors, and the processing operation is controlled such that the dimension will become a desired value.
    Type: Grant
    Filed: December 12, 2000
    Date of Patent: June 25, 2002
    Assignee: TDK Corporation
    Inventors: Kazuo Ishizaki, Tatsuo Joji, Yoshifumi Ohtsu, Hiroyuki Itoh
  • Publication number: 20010041509
    Abstract: An apparatus main body has a surface plate, a vertical shaft and an arm coupled to the vertical shaft such that it can move in the vertical direction. A spline shaft is attached to the arm such that it can move in the vertical direction. A keeper for holding a workpiece is attached to the lower end of the spline shaft. A reference position sensor for detecting the position of the top surface of a reference base as a reference position and a workpiece dimension sensor for detecting the position of the top surface of the keeper as a position associated with a dimension of the workpiece are attached to the arm. During a process on the workpiece, the absolute dimension of the workpiece is recognized based on information detected by the sensors, and the processing operation is controlled such that the dimension will become a desired value.
    Type: Application
    Filed: December 12, 2000
    Publication date: November 15, 2001
    Applicant: TDK Corporation
    Inventors: Kazuo Ishizaki, Tatsuo Joji, Yoshifumi Ohtsu, Hiroyuki Itoh