Patents by Inventor Lye Tatt Cheah

Lye Tatt Cheah 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).

  • Publication number: 20240145187
    Abstract: To realize both toughness and size reduction of a safety switch. A safety switch is a safety switch into and from which a bolt of an actuator is inserted and pulled out. The safety switch includes a casing having a shape elongated along a first direction, a metal head having a receiving space for receiving the bolt of the actuator and provided on a first end side of the casing in the first direction, a detector for detecting a first state in which the bolt is received in the receiving space, a lock mechanism, a switching device and a first attachment portion provided in the head and having a first attachment hole into which a first attachment member is inserted.
    Type: Application
    Filed: January 9, 2024
    Publication date: May 2, 2024
    Applicant: Keyence Corporation
    Inventors: Choryon Oh, Yu Babasaki, Lye Tatt Cheah
  • Patent number: 11908654
    Abstract: To realize both toughness and size reduction of a safety switch. A safety switch is a safety switch into and from which a bolt of an actuator is inserted and pulled out. The safety switch includes a casing having a shape elongated along a first direction, a metal head having a receiving space for receiving the bolt of the actuator and provided on a first end side of the casing in the first direction, a detector for detecting a first state in which the bolt is received in the receiving space, a lock mechanism, a switching device and a first attachment portion provided in the head and having a first attachment hole into which a first attachment member is inserted.
    Type: Grant
    Filed: December 9, 2022
    Date of Patent: February 20, 2024
    Assignee: KEYENCE CORPORATION
    Inventors: Choryon Oh, Yu Babasaki, Lye Tatt Cheah
  • Publication number: 20230104627
    Abstract: To realize both toughness and size reduction of a safety switch. A safety switch is a safety switch into and from which a bolt of an actuator is inserted and pulled out. The safety switch includes a casing having a shape elongated along a first direction, a metal head having a receiving space for receiving the bolt of the actuator and provided on a first end side of the casing in the first direction, a detector for detecting a first state in which the bolt is received in the receiving space, a lock mechanism, a switching device and a first attachment portion provided in the head and having a first attachment hole into which a first attachment member is inserted.
    Type: Application
    Filed: December 9, 2022
    Publication date: April 6, 2023
    Applicant: Keyence Corporation
    Inventors: Choryon Oh, Yu Babasaki, Lye Tatt Cheah
  • Patent number: 11551884
    Abstract: To realize both toughness and size reduction of a safety switch. A safety switch is a safety switch into and from which a bolt of an actuator is inserted and pulled out. The safety switch includes a casing having a shape elongated along a first direction, a metal head having a receiving space for receiving the bolt of the actuator and provided on a first end side of the casing in the first direction, a detector for detecting a first state in which the bolt is received in the receiving space, a lock mechanism, a switching device and a first attachment portion provided in the head and having a first attachment hole into which a first attachment member is inserted.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: January 10, 2023
    Assignee: KEYENCE CORPORATION
    Inventors: Choryon Oh, Yu Babasaki, Lye Tatt Cheah
  • Patent number: 11220855
    Abstract: To improve toughness of a non-contact type safety door switch. A safety switch includes a metallic casing integrated as a first part of an enclosure, having an opening in a front side, a cover integrated as a front part of the enclosure, covering the opening, the cover having a surface as a front surface of the enclosure, a wireless means, a determination means, an output means, circuit substrates provided inside the metallic casing and the cover, on which the wireless means, the determination means and the output means are mounted, and attachment holes on a side surface of the metallic casing, the side surface being adjacent to the front surface of the enclosure for attaching the casing.
    Type: Grant
    Filed: April 6, 2021
    Date of Patent: January 11, 2022
    Assignee: KEYENCE CORPORATION
    Inventors: Hiroshi Kashima, Lye Tatt Cheah
  • Publication number: 20210222478
    Abstract: To improve toughness of a non-contact type safety door switch. A safety switch includes a metallic casing integrated as a first part of an enclosure, having an opening in a front side, a cover integrated as a front part of the enclosure, covering the opening, the cover having a surface as a front surface of the enclosure, a wireless means, a determination means, an output means, circuit substrates provided inside the metallic casing and the cover, on which the wireless means, the determination means and the output means are mounted, and attachment holes on a side surface of the metallic casing, the side surface being adjacent to the front surface of the enclosure for attaching the casing.
    Type: Application
    Filed: April 6, 2021
    Publication date: July 22, 2021
    Applicant: Keyence Corporation
    Inventors: Hiroshi Kashima, Lye Tatt Cheah
  • Patent number: 11008798
    Abstract: To improve toughness of a non-contact type safety door switch. A safety switch includes a metallic casing integrated as a first part of an enclosure, having an opening in a front side, a cover integrated as a front part of the enclosure, covering the opening, the cover having a surface as a front surface of the enclosure, a wireless means, a determination means, an output means, circuit substrates provided inside the metallic casing and the cover, on which the wireless means, the determination means and the output means are mounted, and attachment holes on a side surface of the metallic casing, the side surface being adjacent to the front surface of the enclosure for attaching the casing.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: May 18, 2021
    Assignee: KEYENCE CORPORATION
    Inventors: Hiroshi Kashima, Lye Tatt Cheah
  • Publication number: 20190316381
    Abstract: To realize both toughness and size reduction of a safety switch. A safety switch is a safety switch into and from which a bolt of an actuator is inserted and pulled out. The safety switch includes a casing having a shape elongated along a first direction, a metal head having a receiving space for receiving the bolt of the actuator and provided on a first end side of the casing in the first direction, a detector for detecting a first state in which the bolt is received in the receiving space, a lock mechanism, a switching device and a first attachment portion provided in the head and having a first attachment hole into which a first attachment member is inserted.
    Type: Application
    Filed: February 8, 2019
    Publication date: October 17, 2019
    Applicant: Keyence Corporation
    Inventors: Choryon Oh, Yu Babasaki, Lye Tatt Cheah
  • Publication number: 20190316405
    Abstract: To improve toughness of a non-contact type safety door switch. A safety switch includes a metallic casing integrated as a first part of an enclosure, having an opening in a front side, a cover integrated as a front part of the enclosure, covering the opening, the cover having a surface as a front surface of the enclosure, a wireless means, a determination means, an output means, circuit substrates provided inside the metallic casing and the cover, on which the wireless means, the determination means and the output means are mounted, and attachment holes on a side surface of the metallic casing, the side surface being adjacent to the front surface of the enclosure for attaching the casing.
    Type: Application
    Filed: February 8, 2019
    Publication date: October 17, 2019
    Applicant: Keyence Corporation
    Inventors: Hiroshi Kashima, Lye Tatt Cheah