Patents by Inventor Hisakazu Yamada

Hisakazu Yamada 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: 7824204
    Abstract: A connector includes a plug and a socket that are connected and integrated to each other. The plug and socket each have an end to which a connection line may be respectively connected. The plug of the connector includes a plug body for connecting to the connection line and having a fitting recess on one end, a plug holder configured to be freely rotatably fitted over the plug body without slipping, and a stopper fitting configured to be freely rotatably fitted over the plug body and slidable in the shaft center direction. The socket of the connector includes a socket body for connecting to the connection line at one end and a socket holder. The socket body has an insertion portion configured so as to fit into the fitting recess of the plug body. The socket holder is configured to be freely rotatably fitted over the socket body without slipping.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: November 2, 2010
    Assignee: OMRON Corporation
    Inventors: Taijiro Fujiwara, Ryoichi Takeuchi, Hisakazu Yamada, Atsushi Yokoigawa
  • Publication number: 20090269958
    Abstract: A connector includes a plug and a socket that are connected and integrated to each other at one end. The plug and socket each have another end to which a connection line may be respectively connected, whereby the connection lines connected respectively to the plug and socket are connected to each other. The plug of the connector includes a plug body for connecting to the connection line on one end thereof and having a fitting recess on the other end thereof, a plug holder shaped in a substantially cylindrical form and configured to be freely rotatably fitted over the plug body without slipping off an outer peripheral surface of the plug body, and a stopper fitting biased outward along a shaft center direction and configured to be freely rotatably fitted over the plug body and separately slidable in the shaft center direction. The socket of the connector includes a socket body for connecting to the connection line at one end thereof and a socket holder shaped in a substantially cylindrical form.
    Type: Application
    Filed: September 7, 2006
    Publication date: October 29, 2009
    Applicant: OMRON CORPORATION
    Inventors: Taijiro Fujiwara, Ryoichi Takeuchi, Hisakazu Yamada, Atsushi Yokoigawa
  • Patent number: 6994579
    Abstract: A plug includes a plug main body, a connection sleeve, and a connection ring. A socket includes a socket main body and a socket holder. An insertion member of the socket main body is fitted to an engagement concave of the plug main body. An engaging projection of the socket holder is fitted to one end of a circular-arc slit of the connection ring. The connection ring is rotated to relatively shift the engaging projection along the circular-arc slit, and the engaging projection is positioned and locked at the other end of the circular-arc slit.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: February 7, 2006
    Assignee: OMRON Corporation
    Inventors: Atsushi Yokoigawa, Hisakazu Yamada, Makoto Sato, Masayuki Okamoto
  • Publication number: 20050239311
    Abstract: A plug includes a plug main body, a connection sleeve, and a connection ring. A socket includes a socket main body and a socket holder. An insertion member of the socket main body is fitted to an engagement concave of the plug main body. An engaging projection of the socket holder is fitted to one end of a circular-arc slit of the connection ring. The connection ring is rotated to relatively shift the engaging projection along the circular-arc slit, and the engaging projection is positioned and locked at the other end of the circular-arc slit.
    Type: Application
    Filed: April 21, 2005
    Publication date: October 27, 2005
    Applicant: OMRON Corporation
    Inventors: Atsushi Yokoigawa, Hisakazu Yamada, Makoto Sato, Masayuki Okamoto
  • Patent number: 6851967
    Abstract: In a wire connector, when a manipulation button 40 is pushed into a casing 10, a manipulation portion 43 of the manipulation button 40 pushes down one side of a leaf spring 30, whereas by pressing and locking an upper surface of the manipulation button 40 to a corner portion 11 of the casing 10 due to a reaction of the leaf spring 30. Accordingly, it is possible to provide the small wire connector which is simple in structure, high in reliability of contact, and easy in assembly and connecting operation.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: February 8, 2005
    Assignee: Omron Corporation
    Inventors: Kazuaki Miyoshi, Junichiro Kumagai, Hisakazu Yamada, Motoyuki Tomizu
  • Publication number: 20040102078
    Abstract: In a wire connector, when a manipulation button 40 is pushed into a casing 10, a manipulation portion 43 of the manipulation button 40 pushes down one side of a leaf spring 30, whereas by pressing and locking an upper surface of the manipulation button 40 to a corner portion 11 of the casing 10 due to a reaction of the leaf spring 30. Accordingly, it is possible to provide the small wire connector which is simple in structure, high in reliability of contact, and easy in assembly and connecting operation.
    Type: Application
    Filed: July 23, 2003
    Publication date: May 27, 2004
    Inventors: Kazuaki Miyoshi, Junichiro Kumagai, Hisakazu Yamada, Motoyuki Tomizu