Patents by Inventor Katsushi Manabe

Katsushi Manabe 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: 4108288
    Abstract: A current collector shoe suspension for sliding contact with an electric power line in an externally powered electric vehicle. Current collecting shoes are resiliently biased toward a power rail through a plurality of interconnected vibration absorbing units pivotally mounted to the vehicle. Each unit can vibrate independently of the others, and the units have different resonance points so displaced that their vibration characteristic curves overlap, whereby the shoes maintain contact with the rail over a wide range of vibration frequencies and amplitudes.
    Type: Grant
    Filed: July 6, 1977
    Date of Patent: August 22, 1978
    Assignees: Fuji Electric Co., Ltd., Japanese National Railways
    Inventors: Katsushi Manabe, Fumio Nakama, Kunio Shibayama