Patents by Inventor Takehiko OKUMURA

Takehiko OKUMURA 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 switch and hermetically sealed electric compressor
    Patent number: 10886084
    Abstract: A pressure switch includes an airtight metallic pressure vessel. A contact mechanism is normally in a closed state and assumes an open state when a pressing force acts thereon. An airtight terminal, provided through an end surface section of the pressure vessel, is connected to the contact mechanism. A metallic first diaphragm is secured to a surface section at one end of the pressure vessel, is moved by a first moving pressure, and is reset by a reset pressure that is lower than the first moving pressure. A first plunger causes the contact mechanism to switch the open state. A metallic second diaphragm is secured to pressure vessel, is moved by a second moving pressure that is higher than the first moving pressure, and is not reset under at least an atmospheric pressure. A second plunger causes the contact mechanism to switch to the open state.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: January 5, 2021
    Assignee: UBUKATA INDUSTRIES CO., LTD.
    Inventors: Hiroshi Murata, Hideki Okumura, Takehiko Okumura, Kanichiro Sugiura, Shinichi Takahashi
  • COMPRESSOR AND REFRIGERATION CYCLE DEVICE
    Publication number: 20200072212
    Abstract: A compressor includes a sealed container, a compression element installed inside the sealed container and configured to compress refrigerant, a motor element installed inside the sealed container as a drive source of the compression element, and a pressure switch installed inside the sealed container and configured to open a normally closed contact when pressure inside the sealed container reaches or exceeds a first set pressure, where the pressure switch is connected to all of connection parts of windings forming a part of the motor element.
    Type: Application
    Filed: February 14, 2017
    Publication date: March 5, 2020
    Inventors: Kanichiro SUGIURA, Shinichi TAKAHASHI, Hiroshi MURATA, Hideki OKUMURA, Takehiko OKUMURA
  • PRESSURE SWITCH AND HERMETICALLY SEALED ELECTRIC COMPRESSOR
    Publication number: 20190362919
    Abstract: A pressure switch includes an airtight metallic pressure vessel. A contact mechanism is normally in a closed state and assumes an open state when a pressing force acts thereon. An airtight terminal, provided through an end surface section of the pressure vessel, is connected to the contact mechanism. A metallic first diaphragm is secured to a surface section at one end of the pressure vessel, is moved by a first moving pressure, and is reset by a reset pressure that is lower than the first moving pressure. A first plunger causes the contact mechanism to switch the open state. A metallic second diaphragm is secured to pressure vessel, is moved by a second moving pressure that is higher than the first moving pressure, and is not reset under at least an atmospheric pressure. A second plunger causes the contact mechanism to switch to the open state.
    Type: Application
    Filed: August 7, 2019
    Publication date: November 28, 2019
    Inventors: Hiroshi MURATA, Hideki OKUMURA, Takehiko OKUMURA, Kanichiro SUGIURA, Shinichi TAKAHASHI