Patents by Inventor Takeshi Iitsuka

Takeshi Iitsuka 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: 5049773
    Abstract: A stator assembly for use in an electric motor includes a stator core, a coil wound in the stator core and having terminal ends connected to leads, two sheets of insulation paper interposed between the stator core and the coil, and two auxiliary insulation plates extending between ends of the sheets of insulation paper and pole tongue ends of the stator core. The auxiliary insulation plate has engaging portions held in abutting engagement with the pole tongue ends. The engaging portions comprise opposite edge portions cut and bent from opposite ends of the auxiliary insulation plate toward one side thereof.
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: September 17, 1991
    Assignee: Hitachi Koki Company, Limited
    Inventors: Kenji Shinagawa, Takeshi Iitsuka
  • Patent number: 4450323
    Abstract: A reversible switch comprises four fixed contact members mounted within a base, each having an arcuate contact jointly defining an interrupted circular wall. A cylindrical body rotatable within the wall includes a pair of contact members slidably engageable with the fixed contacts to reverse polarity of an electrical circuit when rotated 90.degree. between first and second positions. An eccentric pin projecting from the body through an arcuate slot formed in a cover mounted on the base rotates the body via engagement with a lever pivotably mounted on the cover. The rotatable body is selectively retained in first or second position by a spring-biased cap received in a pair of positioning holes in the cover.
    Type: Grant
    Filed: November 24, 1981
    Date of Patent: May 22, 1984
    Assignee: Hitachi Koki Company, Limited
    Inventor: Takeshi Iitsuka