Patents by Inventor Tomoaki Matsubara

Tomoaki Matsubara 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).

  • Cylinder head gasket
    Patent number: 9291121
    Abstract: A cylinder head gasket includes a plurality of seal plates 1 to 4 so that a combustion gas that leaks through a gap between the respective seal plates is reliably sealed. The cylinder head gasket includes the plurality of seal plates 1 to 4, which are held between a cylinder head and a cylinder block having a cylinder bore. The plurality of seal plates 1 to 4 are adhered to each other in a circumferentially continuous manner around combustion chamber holes 1a to 4a, and the combustion gas that leaks through the gap between the respective seal plates is reliably sealed within an adhered portion 5 of the respective seal plates.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: March 22, 2016
    Assignee: NIPPON GASKET CO., LTD.
    Inventors: Shingo Mori, Tomoaki Matsubara, Ryosuke Fujiki
  • CYLINDER HEAD GASKET
    Publication number: 20140062033
    Abstract: A cylinder head gasket includes a plurality of seal plates 1 to 4 so that a combustion gas that leaks through a gap between the respective seal plates is reliably sealed. The cylinder head gasket includes the plurality of seal plates 1 to 4, which are held between a cylinder head and a cylinder block having a cylinder bore. The plurality of seal plates 1 to 4 are adhered to each other in a circumferentially continuous manner around combustion chamber holes 1a to 4a, and the combustion gas that leaks through the gap between the respective seal plates is reliably sealed within an adhered portion 5 of the respective seal plates.
    Type: Application
    Filed: November 6, 2013
    Publication date: March 6, 2014
    Inventors: Shingo MORI, Tomoaki MATSUBARA, Ryosuke FUJIKI
  • Cylinder head gasket
    Patent number: 8608178
    Abstract: A cylinder head gasket includes a plurality of seal plates 1 to 4 so that a combustion gas that leaks through a gap between the respective seal plates is reliably sealed. The cylinder head gasket includes the plurality of seal plates 1 to 4, which are held between a cylinder head and a cylinder block having a cylinder bore. The plurality of seal plates 1 to 4 are adhered to each other in a circumferentially continuous manner around combustion chamber holes 1a to 4a, and the combustion gas that leaks through the gap between the respective seal plates is reliably sealed within an adhered portion 5 of the respective seal plates.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: December 17, 2013
    Assignee: Nippon Gasket Co., Ltd.
    Inventors: Shingo Mori, Tomoaki Matsubara, Ryosuke Fujiki
  • CYLINDER HEAD GASKET
    Publication number: 20100225071
    Abstract: In a cylinder head gasket including a plurality of seal plates 1 to 4, a combustion gas that is to leak through a gap between the respective seal plates is reliably sealed. The cylinder head gasket includes the plurality of seal plates 1 to 4, which are held between a cylinder head and a cylinder block having a cylinder bore. The plurality of seal plates 1 to 4 are adhered to each other in a circumferentially continuous manner around combustion chamber holes 1a to 4a, and the combustion gas that is to leak through the gap between the respective seal plates is reliably sealed within an adhered portion 5 of the respective seal plates.
    Type: Application
    Filed: September 2, 2008
    Publication date: September 9, 2010
    Inventors: Shingo Mori, Tomoaki Matsubara, Ryosuke Fujiki