Patents by Inventor Masao Tsujino

Masao Tsujino 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).

  • Noise reducer for construction equipment
    Patent number: 6332509
    Abstract: A noise reducer for construction machinery, which efficiently reduces noise at low cost with durability, is provided. For this purpose, lamination plates (8) which are the plates being laminated are bonded, discretely at a predetermined interval (a1), to a part of or the entire of a noise generating element. Lamination plates (8A, 8E) may be bonded discretely at a plurality of kinds of bonding intervals (a1, a2). The lamination plates (8) with the different number of laminations may be bonded according to a noise generating element.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: December 25, 2001
    Assignee: Komatsu Ltd.
    Inventors: Kenji Nishikawa, Haruhiro Tsubota, Masao Tsujino