Patents by Inventor Masamitsu Kamimura

Masamitsu Kamimura 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).

  • Synchronous resolver, resolver cable and direct drive motor system
    Patent number: 6856061
    Abstract: A synchronous resolver has: a stator including a plurality of stator poles disposed at regular intervals along the circumferential direction of a ring-shaped stator base portion, the stator poles comprise a plurality of phases; coil bobbins former-wounded stator coils therearound are respectively fitted with and mounted on their associated ones of the stator poles; and, a rotor shiftable in angle with respect to the stator to thereby vary a reluctance component in a gap existing between the stator and the rotor, wherein the coil bobbins are set the positions of the stator coils freely in such a manner that the resolver signals of the respective phases balance well.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: February 15, 2005
    Assignee: NSK Ltd.
    Inventors: Masatoshi Nishizawa, Masaki Kuwahara, Masamitsu Kamimura
  • Synchronous resolver, resolver cable and direct drive motor system
    Publication number: 20030090223
    Abstract: A synchronous resolver has: a stator including a plurality of stator poles disposed at regular intervals along the circumferential direction of a ring-shaped stator base portion, the stator poles comprise a plurality of phases; coil bobbins former-wounded stator coils therearound are respectively fitted with and mounted on their associated ones of the stator poles; and, a rotor shiftable in angle with respect to the stator to thereby vary a reluctance component in a gap existing between the stator and the rotor, wherein the coil bobbins are set the positions of the stator coils freely in such a manner that the resolver signals of the respective phases balance well.
    Type: Application
    Filed: November 12, 2002
    Publication date: May 15, 2003
    Applicant: NSK LTD.
    Inventors: Masatoshi Nishizawa, Masaki Kuwahara, Masamitsu Kamimura