Patents by Inventor Eiishi Ishida

Eiishi Ishida 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).

  • Vibration and noise proofing system for a hydrostatic stepless transmission attached to a transmission case
    Patent number: 5295414
    Abstract: A vibration and sound proofing system for a working vehicle such as a tractor or a lawn mower having a hydrostatic stepless transmission (HST) included in a propelling transmission system for transmitting engine output to wheels. The HST is mounted in a case secured to intermediate mounting plates attached to a gear transmission case through vibration and sound absorbers. Output shafts of the HST are connected to input shafts of a gear transmission through vibration absorbing shaft couplings.Each of the vibration absorbers includes a metallic outer tube, a metallic inner tube disposed concentrically with the outer tube, and a rubber element filled tight in an annular space defined between the outer and inner tubes.
    Type: Grant
    Filed: December 26, 1991
    Date of Patent: March 22, 1994
    Assignee: Kubota Corporation
    Inventors: Tadashi Nakamura, Kenzo Ushiro, Hirofumi Iritani, Eiishi Ishida