Patents by Inventor Kunitake Murai

Kunitake Murai 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: 5328108
    Abstract: A method for winding coils on a Y-connection armature for miniature motors, the motor typically including an armature iron core of a multi-pole construction, a commutator and a common terminal plate. Each of the commutator and the common terminal plate are disposed in a mutually insulated state on an insulating cylinder fixedly fitted to an armature shaft. A plurality of coils are wound on the armature iron core. Lead wires of the coils are connected to tongues of the commutator and the common terminal plate. Ends of the lead wires wound on the coils, other than the last coil, are extended across a predetermined commutator tongue and a tongue of the common terminal plate adjacent to the commutator tongue without being cut. The lead wire is connected to the tongues of the commutator tongue and the common terminal plate. Subsequently, the lead wire which is disposed across the commutator tongue and the common terminal plate tongue is cut.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: July 12, 1994
    Assignee: Mabuchi Motor Co., Ltd.
    Inventor: Kunitake Murai