Patents by Inventor Takeyoshi Okawa

Takeyoshi Okawa 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: 7563510
    Abstract: In a scroll compressor, a thrust ring is mounted between a movable-side flat plate part of a movable scroll and a housing. An upper surface of the thrust ring slides relative to a lower surface of the movable-side flat plate part and supports a thrust load from the movable scroll. A resinous coating is formed on the upper surface of the thrust ring which slides relative to the movable-side flat plate part. The resinous coating is composed primarily of fluorocarbon resin and polyamide-imide resin. The component percentage of the polyamide-imide resin in the primary component of the resinous coating is set, such that it is not less than 65% by mass nor more than 85% by mass.
    Type: Grant
    Filed: January 12, 2005
    Date of Patent: July 21, 2009
    Assignee: Daikin Industries, Ltd.
    Inventors: Tomoko Nogawa, Keiji Yoshimura, Tomihiko Yanagiguchi, Takeyoshi Okawa
  • Publication number: 20080025861
    Abstract: A lubrication part serving as a bearing metal is provided in a scroll compressor at a sliding part between a cylindrical part of a slide busing and an extension of a movable scroll. An inner periphery of the lubrication part is formed so that its iron substrate is given a surface roughness Ra of 3.7 ?m and a resin layer containing FEP and PTFE is then provided on the roughened substrate surface.
    Type: Application
    Filed: September 22, 2005
    Publication date: January 31, 2008
    Inventors: Takeyoshi Okawa, Nobuaki Takeda, Shunji Kasai, Takuya Kinoshita, Manabu Asai, Norihiko Miki
  • Publication number: 20070031275
    Abstract: In a scroll compressor, a thrust ring is mounted between a movable-side flat plate part of a movable scroll and a housing. An upper surface of the thrust ring slides relative to a lower surface of the movable-side flat plate part and supports a thrust load from the movable scroll. A resinous coating is formed on the upper surface of the thrust ring which slides relative to the movable-side flat plate part. The resinous coating is composed primarily of fluorocarbon resin and polyamide-imide resin. The component percentage of the polyamide-imide resin in the primary component of the resinous coating is set, such that it is not less than 65% by mass nor more than 85% by mass.
    Type: Application
    Filed: January 12, 2005
    Publication date: February 8, 2007
    Applicant: Daikin Industries, Ltd
    Inventors: Tomoko Nogawa, Keiji Yoshimura, Tomihiko Yanagiguchi, Takeyoshi Okawa