Patents by Inventor Masaya Takata

Masaya Takata 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).

  • Titanium alloy valve lifter
    Patent number: 7600499
    Abstract: A lightweight and high-strength valve lifter is excellent in wear resistance and sliding properties. The valve lifter is made of a titanium alloy having a hardened layer on the top surface thereof, on which a cam is caused to slide. The hardened layer is composed of an ?-case and an oxygen diffusion layer under the ?-case. The ?-case 22 is formed in a thickness of not less than 3 ?m and not more than 15 ?m. The oxygen diffusion layer has a thickness of not less than 10 ?m. The hardened layer on the top surface of the valve lifter is formed by oxidation treatment in a furnace at a temperature of not less than 600° C. An outermost oxide layer 21 formed on the ?-case as a result of the oxidation treatment is removed.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: October 13, 2009
    Assignees: Honda Motor Co., Ltd., Tanaka Seimitsu Kogyo Co., Ltd.
    Inventors: Hiroyuki Horimura, Kosuke Doi, Masaya Takata
  • Titanium alloy valve lifter and method of manufacturing same
    Publication number: 20060219200
    Abstract: A lightweight and high-strength valve lifter is excellent in wear resistance and sliding properties. The valve lifter is made of a titanium alloy having a hardened layer on the top surface thereof, on which a cam is caused to slide. The hardened layer is composed of an ?-case and an oxygen diffusion layer under the ?-case. The ?-case 22 is formed in a thickness of not less than 3 ?m and not more than 15 ?m. The oxygen diffusion layer has a thickness of not less than 10 ?m. The hardened layer on the top surface of the valve lifter is formed by oxidation treatment in a furnace at a temperature of not less than 600° C. An outermost oxide layer 21 formed on the ?-case as a result of the oxidation treatment I s removed.
    Type: Application
    Filed: March 29, 2006
    Publication date: October 5, 2006
    Inventors: Hiroyuki Horimura, Kosuke Doi, Masaya Takata