Patents by Inventor Yuki Kuwamura

Yuki Kuwamura 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).

  • Metal gasket
    Patent number: 8485534
    Abstract: A metal gasket includes an outer ring that is formed in a substantially C-shaped cross-section having an opening in a circumferential direction and an inner ring that is disposed inside the outer ring, wherein the inner ring is configured in a polygonal shape of a cross section, and a pair of corner portions opposing to each other in the inner ring are disposed on inner circumferential faces on the both sides of the opening in the outer ring.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: July 16, 2013
    Assignees: Tohoku University, Nippon Valqua Industries, Ltd.
    Inventors: Tadahiro Ohmi, Yasuyuki Shirai, Koji Sato, Masayuki Noguchi, Tsutomu Yoshida, Akira Muramatsu, Satoshi Kumaki, Yuki Kuwamura
  • Reciprocating compressor and oxygen concentrator
    Patent number: 8435013
    Abstract: A reciprocating compressor includes a motor having a motor shaft, four cylinders provided in perpendicular directions relative to an axial direction of the motor shaft, and four pistons Each piston has a piston head part and a rod part formed integrally with the piston head part. Each piston head part is fitted into one of the four cylinders in a reciprocable fashion. Each rod part is rotatably mounted to an eccentric shaft that is fixed to the motor shaft.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: May 7, 2013
    Assignee: Daikin Industries, Ltd.
    Inventors: Keita Kondou, Satoshi Ueda, Yuki Kuwamura
  • Metal Gasket
    Publication number: 20110084456
    Abstract: A metal gasket includes an outer ring that is formed in a substantially C-shaped cross-section having an opening in a circumferential direction and an inner ring that is disposed inside the outer ring, wherein the inner ring is configured in a polygonal shape of a cross section, and a pair of corner portions opposing to each other in the inner ring are disposed on inner circumferential faces on the both sides of the opening in the outer ring.
    Type: Application
    Filed: May 7, 2009
    Publication date: April 14, 2011
    Applicants: TOHOKU UNIVERSITY, NIPPON VALQUA INDUSTRIES, LTD.
    Inventors: Tadahiro Ohmi, Yasuyuki Shirai, Koji Sato, Masayuki Noguchi, Tsutomu Yoshida, Akira Muramatsu, Satoshi Kumaki, Yuki Kuwamura
  • RECIPROCATING COMPRESSOR AND OXYGEN CONCENTRATOR
    Publication number: 20100319547
    Abstract: A reciprocating compressor includes a motor having a motor shaft, four cylinders provided in perpendicular directions relative to an axial direction of the motor shaft, and four pistons Each piston has a piston head part and a rod part formed integrally with the piston head part. Each piston head part is fitted into one of the four cylinders in a reciprocable fashion. Each rod part is rotatably mounted to an eccentric shaft that is fixed to the motor shaft.
    Type: Application
    Filed: February 8, 2008
    Publication date: December 23, 2010
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Keita Kondou, Satoshi Ueda, Yuki Kuwamura