Patents by Inventor Katsushi Habu

Katsushi Habu 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: 10895222
    Abstract: A charge forming device includes a body with a main bore through which air flows and a fuel inlet through which fuel enters the main bore. A diaphragm defines part of a fuel chamber that leads to a fuel passage. The valve body is received in the fuel passage and has a first end, a second end, a sidewall, a valve passage having an inlet into which fuel from the fuel chamber enters and an outlet from which fuel exits for delivery to the main bore, and a cross passage extending through the sidewall between the first end and the second end and opening into the valve passage. A valve is carried by the body and has a valve head received in the cross passage and extending into the valve passage to at least partially inhibit fuel flow through the valve passage.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: January 19, 2021
    Assignee: Walbro LLC
    Inventors: Katsushi Habu, Tomoya Kawada, Kazuya Sasahara
  • Publication number: 20190360432
    Abstract: A charge forming device includes a body with a main bore through which air flows and a fuel inlet through which fuel enters the main bore. A diaphragm defines part of a fuel chamber that leads to a fuel passage. The valve body is received in the fuel passage and has a first end, a second end, a sidewall, a valve passage having an inlet into which fuel from the fuel chamber enters and an outlet from which fuel exits for delivery to the main bore, and a cross passage extending through the sidewall between the first end and the second end and opening into the valve passage. A valve is carried by the body and has a valve head received in the cross passage and extending into the valve passage to at least partially inhibit fuel flow through the valve passage.
    Type: Application
    Filed: April 26, 2019
    Publication date: November 28, 2019
    Inventors: Katsushi Habu, Tomoya Kawada, Kazuya Sasahara
  • Patent number: 7152852
    Abstract: A float bowl type carburetor has a fuel and air mixing passage extending therethrough, a float bowl assembly, a priming pump communicated with the float bowl assembly and a fuel supply pipe that is communicates fuel in the float bowl assembly with the fuel and air mixing passage. The priming pump is operable to deliver pressurized fluid into the float bowl assembly in the area of the fuel supply pipe. Preferably, the priming pump discharges fluid in line with the fuel supply pipe so that at least some of the fluid discharged from the priming pump flows directly into the fuel supply pipe to facilitate delivering a rich fuel and air mixture to the engine to facilitate starting the engine.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: December 26, 2006
    Assignee: Walbro Japan, Inc.
    Inventors: Katsushi Habu, Azuma Ohji, Hidenobu Takahashi, Toshimasa Takahashi, Takeshi Kobayashi
  • Patent number: 6945520
    Abstract: A starting device for a rotary throttle valve-type carburetor enables adjustment of the quantity of air and fuel delivered to an engine to facilitate the cold start of the engine. The starting device changes the position of the throttle valve prior to starting the engine to adjust the fuel and air mixture delivered to the engine as desired to facilitate starting and initial warming up of the engine.
    Type: Grant
    Filed: June 14, 2004
    Date of Patent: September 20, 2005
    Assignee: Walbro Japan, Inc.
    Inventors: Shinichi Ohgane, Takashi Horikawa, Katsushi Habu, Takeshi Sakaguchi, Hiraku Watanabe, Hiroaki Ishii
  • Publication number: 20050017379
    Abstract: A starting device for a rotary throttle valve-type carburetor enables adjustment of the quantity of air and fuel delivered to an engine to facilitate the cold start of the engine. The starting device changes the position of the throttle valve prior to starting the engine to adjust the fuel and air mixture delivered to the engine as desired to facilitate starting and initial warming up of the engine.
    Type: Application
    Filed: June 14, 2004
    Publication date: January 27, 2005
    Inventors: Shinichi Ohgane, Takashi Horikawa, Katsushi Habu, Takeshi Sakaguchi, Hiraku Watanabe, Hiroaki Ishii
  • Patent number: 6769670
    Abstract: A starting device for a rotary throttle valve-type carburetor enables adjustment of the quantity of air and fuel delivered to an engine to facilitate the cold start of the engine. The starting device changes the position of the throttle valve prior to starting the engine to adjust the fuel and air mixture delivered to the engine as desired to facilitate starting and initial warming up of the engine.
    Type: Grant
    Filed: December 5, 2002
    Date of Patent: August 3, 2004
    Assignee: Walbro Japan, Inc.
    Inventors: Shinichi Ohgane, Takashi Horikawa, Katsushi Habu, Takeshi Sakaguchi, Hiraku Watanabe, Hiroaki Ishii
  • Publication number: 20030111743
    Abstract: A starting device for a rotary throttle valve-type carburetor enables adjustment of the quantity of air and fuel delivered to an engine to facilitate the cold start of the engine. The starting device changes the position of the throttle valve prior to starting the engine to adjust the fuel and air mixture delivered to the engine as desired to facilitate starting and initial warming up of the engine.
    Type: Application
    Filed: December 5, 2002
    Publication date: June 19, 2003
    Inventors: Shinichi Ohgane, Takashi Horikawa, Katsushi Habu, Takeshi Sakaguchi, Hiraku Watanabe, Hiroaki Ishii