Patents by Inventor Isamu Sekizawa

Isamu Sekizawa 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).

  • Patent number: 5904345
    Abstract: To provide a vibration-damping assembly sufficiently functions in wide range of vibration with improved durability, and effective spring constant thereof can easily be changed as occasion demands. The vibration-damping assembly comprises a leaf spring (20) and a vibration-damping rubber (23) which are connected to each other in series, and a base end portion of the leaf spring (20) is secured to stand portions (3B, 3C) of a support (3), and another end of the vibration-damping rubber (23), which is not connected to the leaf spring (20), is connected to the prime mover (10).
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: May 18, 1999
    Assignee: Kioritz Corporation
    Inventors: Tatsuhiko Matsubayashi, Satoru Kikuchi, Isamu Sekizawa
  • Patent number: 5894833
    Abstract: The object of the present invention is to provide an internal combustion engine for solving the problem of fuel leakage through an air vent of an carburetor.An internal combustion engine comprises a fuel tank; a carburetor having an air vent at a location above the fuel tank; a fuel circulation passage for supplying fuel from the fuel tank to the carburetor on a upstream side thereof and returns oversupplied fuel to the fuel tank on a downstream side thereof; and a fuel capturing chamber communicated with the air vent, the fuel capturing chamber having an air bleeder so that the fuel which flows backward from the fuel tank through the downstream side of the fuel circulation passage and leaks through the air vent is captured in the fuel capturing chamber.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: April 20, 1999
    Assignee: Kioritz Corporation
    Inventors: Satoru Kikuchi, Isamu Sekizawa