Patents by Inventor Ryozo Kuroiwa

Ryozo Kuroiwa 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).

  • Device for tightening an endless element trained over driving members
    Patent number: 4245518
    Abstract: A device for tightening an endless element which is trained over driving members and which is accommodated in a drive transmission housing. A regulation member is provided outside the housing for easy adjustment of the tautness or tension of the endless element.
    Type: Grant
    Filed: September 21, 1978
    Date of Patent: January 20, 1981
    Assignee: Kubota, Ltd.
    Inventors: Kazuo Toyokuni, Junji Miyata, Hiroshi Itatani, Ryozo Kuroiwa
  • Seated-operator type tractor
    Patent number: 4102537
    Abstract: A tractor with a seat for the operator. A robust safety frame upstanding in gate form is securely supported on chassis framing of the tractor forwardly of the seat. The safety frame has sufficient height that the space occupied by the operator on the seat is entirely underneath a plane circumscribed on top edge of the safety frame and upper rear edge of the tractor body.
    Type: Grant
    Filed: March 17, 1977
    Date of Patent: July 25, 1978
    Assignee: Kubota Ltd.
    Inventors: Teizo Takahashi, Toshiyuki Matsumoto, Tadashi Nakamura, Ryozo Kuroiwa