Patents by Inventor Takeshi Yanagiya

Takeshi Yanagiya 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).

  • Fixing structure for a commutator, insulator for a motor core, and motor structure
    Patent number: 5710473
    Abstract: A motor has an armature that includes a motor core and a commutator. An insulator for insulating the motor core is composed of winding insulating portions and a shaft insulating portion integral with the winding insulating portions. A connecting portion is formed at the end of the shaft insulating portion. The connecting portion is inserted into an insertion groove of the commutator for integral connection. Specifically, the insulator is fixed to the armature shaft by the application of windings, and the commutator is connected and fixed to the insulator. Accordingly, a larger fixing force can be obtained compared to conventional structures, and the use of an adhesive and highly accurate machining become unnecessary, thereby decreasing costs.
    Type: Grant
    Filed: September 8, 1995
    Date of Patent: January 20, 1998
    Assignee: Asmo Co., Ltd.
    Inventors: Tadahisa Nobe, Takeshi Yanagiya, Katsuhiko Torii, Yuichi Terada