Patents by Inventor Yuichi Auchi

Yuichi Auchi 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 level sensor switch
    Patent number: 7414209
    Abstract: A liquid level sensor switch comprising a case, a rod type guide vertically extending from an inside bottom center of the case, a float having a center bore fitted on the guide with a clearance allowing the float to freely move up and down along the guide inside the case, an electrode plate attached to a circumferential bottom surface of the float and a pair of fixed contacts disposed opposite to each other across the guide on the inside bottom surface of the case, wherein the float moves down with the drop of oil in the case along the guide to reach a lowest position at which the electrode plate makes contact with both the fixed contacts to turn on a circuit formed by the electrode plate bridging between the contacts for producing an electrical signal indicating that oil surface is lowered to or below a specified level, which is featured by using the guide having a body tapering upward from its bottom end or the float having the center bore tapered to be gradually larger in diameter upward from its bottom en
    Type: Grant
    Filed: June 13, 2006
    Date of Patent: August 19, 2008
    Assignee: Toyo Denso Kabushiki Kaisha
    Inventors: Hiroyuki Tsuruoka, Sadayoshi Oshima, Yuichi Auchi
  • Liquid level sensor switch
    Publication number: 20060283694
    Abstract: A liquid level sensor switch comprising a case, a rod type guide vertically extending from an inside bottom center of the case, a float having a center bore fitted on the guide with a clearance allowing the float to freely move up and down along the guide inside the case, an electrode plate attached to a circumferential bottom surface of the float and a pair of fixed contacts disposed opposite to each other across the guide on the inside bottom surface of the case, wherein the float moves down with the drop of oil in the case along the guide to reach a lowest position at which the electrode plate makes contact with both the fixed contacts to turn on a circuit formed by the electrode plate bridging between the contacts for producing an electrical signal indicating that oil surface is lowered to or below a specified level, which is featured by using the guide having a body tapering upward from its bottom end or the float having the center bore tapered to be gradually larger in diameter upward from its bottom en
    Type: Application
    Filed: June 13, 2006
    Publication date: December 21, 2006
    Inventors: Hiroyuki Tsuruoka, Sadayoshi Oshima, Yuichi Auchi