Patents by Inventor Toshiya Usami

Toshiya Usami 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).

  • Plate type heat exchanger
    Patent number: 5988268
    Abstract: A plate type heat exchanger includes a plurality of laminated plates 11 each having a resin-covered gasket 15 mounted in a gasket groove 13 therein surrounding a heat transfer surface 12. The resin-covered gasket includes a core 15a of elastic material whose liquid-contacted side surface is covered with a corrosion-resistant resin cover 15b. In this plate type heat exchanger, the liquid-noncontacted side of the core 15a is integrally formed with a fixing element 16, while the outer peripheral surface of the plate 11 is formed with a recess 14 adapted to fit on the fixing element 16. Thus, the resin-covered gasket 15 can be mounted in the gasket groove 13 without using any adhesive agent.
    Type: Grant
    Filed: November 4, 1996
    Date of Patent: November 23, 1999
    Assignee: Hisaka Works Limited
    Inventors: Toshiya Usami, Kenji Kusunoki