Patents by Inventor Katsumi Umezawa

Katsumi Umezawa 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).

  • Fuel vapor arresting means for motorcycle engine fuel system
    Patent number: 4312649
    Abstract: Motorcycle has a fuel tank formed with a fueling port which is closed by a filler cap. The filler cap comprises an outer and inner cap discs which are adapted to be engaged respectively with an outer and inner cap seats so as to define a buffer chamber between the cap discs. A vent hole is formed to open the inside of the tank to the buffer chamber which is in turn connected with a canister containing activated carbon particles. The buffer chamber functions to receive liquid fuel when the motorcycle is turned over and prevent the liquid fuel from passing to the canister.
    Type: Grant
    Filed: January 7, 1980
    Date of Patent: January 26, 1982
    Assignee: Kawaski Jukogyo Kabushiki Kaisha
    Inventors: Hisashi Fujii, Mikio Kamitake, Ryohei Mimura, Katsumi Umezawa