Patents by Inventor Yasuhisa Matsushita

Yasuhisa Matsushita 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 transmission structure
    Patent number: 4463623
    Abstract: A tractor transmission structure including a first and a second gear transmissions operatively connected in series, each gear transmission providing two speeds. The invention provides a single change-speed lever to operate the two gear transmissions. The change-speed lever is guided along a U-shaped opening to obtain three speeds from the gear transmissions, a low speed, an intermediate speed and a high speed.
    Type: Grant
    Filed: October 29, 1981
    Date of Patent: August 7, 1984
    Assignee: Kubota, Ltd.
    Inventors: Junji Miyata, Yasuhisa Matsushita
  • Tractor power take-off system
    Patent number: 4304141
    Abstract: In a tractor power take-off system in which first and second PTO shafts are disposed in the transmission case, the transmission case has at the bottom wall thereof an opening for taking off power to the second PTO shaft and there is disposed a PTO gear speed-change mechanism commonly used for both the first and second PTO shafts. The PTO gear speed-change mechanism has a PTO speed-change shift gear meshed all the times with a large-width speed-change gear for transmitting power to the second PTO shaft.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: December 8, 1981
    Assignee: Kubota, Ltd.
    Inventors: Masatsugu Tone, Yasuhisa Matsushita