Patents by Inventor Masayuki Shibuta

Masayuki Shibuta 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).

  • Electrical contact for relay and method of manufacturing therefor
    Patent number: 9105412
    Abstract: A rivet-shaped electrical contact for relay is used as a movable contact for the relay. The rivet-shaped electrical contact includes a heavy-load contact portion formed of a first silver-oxide type contact material; and a light-load contact portion formed of a second silver-oxide type contact material. The hardness of the first silver-oxide type contact material is set to be higher than that of the second silver-oxide type contact material.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: August 11, 2015
    Assignee: MITSUBISHI MATERIALS C.M.I. CORPORATION
    Inventors: Akihiko Inaba, Noriaki Murahashi, Masayuki Shibuta, Yasuhiro Sekino, Takahiro Yamada
  • Electrical Contact for Relay and Method of Manufacturing Therefor (as amended)
    Publication number: 20120175148
    Abstract: A rivet-shaped electrical contact for relay is used as a movable contact for the relay. The rivet-shaped electrical contact includes a heavy-load contact portion formed of a first silver-oxide type contact material; and a light-load contact portion formed of a second silver-oxide type contact material. The hardness of the first silver-oxide type contact material is set to be higher than that of the second silver-oxide type contact material.
    Type: Application
    Filed: October 15, 2010
    Publication date: July 12, 2012
    Applicant: Mitsubishi Materials C.M.I. Corporation
    Inventors: Akihiko Inaba, Noriaki Murahashi, Masayuki Shibuta, Yasuhiro Sekino, Takahiro Yamada
  • Motor shaft caulked within groove of eccentric load
    Patent number: 6608413
    Abstract: There is provided a vibrator which is integrally coupled to a rotating shaft of a motor. A groove portion in which the rotating shaft is fitted is formed in an eccentric load portion, and side walls extending from the eccentric load portion and forming both side edge portions of the groove portion are provided. A portion of a tip portion end surface of each side wall, except at an outer peripheral portion of the side wall and at a side of the groove portion, is caulked from an opening side of the groove portion toward a bottom side thereof, so that the vibrator is integrally coupled to the rotating shaft.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: August 19, 2003
    Assignee: Mitsubishi Materials C.M.I. Corporation
    Inventor: Masayuki Shibuta
  • Vibration generating device of small wireless machine
    Publication number: 20020047368
    Abstract: There is provided a vibrator 10 which is integrally coupled to a rotating shaft 12 of a motor. A groove portion 13 in which the rotating shaft 12 is fitted is formed in an eccentric load portion 11, and side walls 14 bulging from the eccentric load portion 11 and forming both side edge portions of the groove portion 13 are formed. A portion 14c of a tip portion end surface 14a of the side wall 14 except an outer peripheral portion 14b of the side wall 14 and at a side of the groove portion is caulked from an opening side of the groove portion to a bottom side, so that the vibrator 10 is integrally coupled to the rotating shaft.
    Type: Application
    Filed: December 13, 2000
    Publication date: April 25, 2002
    Inventor: Masayuki Shibuta