Patents by Inventor Takumi Terazawa

Takumi Terazawa 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).

  • Liquid sensor and tube holding member of liquid sensor
    Patent number: 10859423
    Abstract: A liquid sensor is configured to detect presence or absence of a liquid in a tube having a light-transmitting property. The liquid sensor includes a main body case including an elastic piece configured to hold the tube such that the tube is allowed to be inserted therein and extracted therefrom in a direction perpendicular to a longitudinal direction of the tube, a light projecting unit configured to irradiate the tube with detection light, and a light receiving unit configured to receive the detection light that has passed through the tube. A holding member configured to cover the tube in an insertion and extraction direction of the tube is attachable to and detachable from the main body case only in a direction that is not identical with the insertion and extraction direction of the tube.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: December 8, 2020
    Assignee: PANASONIC INDUSTRIAL DEVICES SUNX CO., LTD.
    Inventors: Kazuhiko Hayashi, Takumi Terazawa, Hironao Kitanaka
  • LIQUID SENSOR AND TUBE HOLDING MEMBER OF LIQUID SENSOR
    Publication number: 20190120681
    Abstract: A liquid sensor is configured to detect presence or absence of a liquid in a tube having a light-transmitting property. The liquid sensor includes a main body case including an elastic piece configured to hold the tube such that the tube is allowed to be inserted therein and extracted therefrom in a direction perpendicular to a longitudinal direction of the tube, a light projecting unit configured to irradiate the tube with detection light, and a light receiving unit configured to receive the detection light that has passed through the tube. A holding member configured to cover the tube in an insertion and extraction direction of the tube is attachable to and detachable from the main body case only in a direction that is not identical with the insertion and extraction direction of the tube.
    Type: Application
    Filed: April 20, 2017
    Publication date: April 25, 2019
    Applicant: PANASONIC INDUSTRIAL DEVICES SUNX CO., LTD.
    Inventors: Kazuhiko HAYASHI, Takumi TERAZAWA, Hironao KITANAKA
  • Photoelectronic sensor
    Patent number: D753068
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: April 5, 2016
    Assignee: Panasonic Industrial Devices SUNX Co. Ltd.
    Inventor: Takumi Terazawa