Patents by Inventor Shigekazu Hasegwa

Shigekazu Hasegwa 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).

  • Tractor with a traction load sensing device
    Patent number: 4315548
    Abstract: A tractor has a traction load sensing device needed for effecting regulation of the soil-engaging implement load. Sensor body of the traction load sensing device is accommodated in a casing establishing complete sealing or approximately establishing such state, and the casing is accommodated in and releasably secured to a transmission case of the tractor in an oil-tight manner.
    Type: Grant
    Filed: April 24, 1980
    Date of Patent: February 16, 1982
    Assignee: Kubota, Ltd.
    Inventors: Norimi Nakamura, Shigeaki Okuyama, Shigekazu Hasegwa, Yoshiyuki Katayama, Mituhiko Obe