The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 01, 2013
Filed:
Mar. 19, 2008
Takuya Nishio, Tokyo, JP;
Kunihiko Goto, Tokyo, JP;
Kazunori Aoki, Tokyo, JP;
Osamu Yamamoto, Toyota, JP;
Kazuyoshi Tashiro, Toyota, JP;
Goro Suzuki, Toyota, JP;
Shinichi Nomura, Toyota, JP;
Kosei Yoshida, Toyota, JP;
Takuya Nishio, Tokyo, JP;
Kunihiko Goto, Tokyo, JP;
Kazunori Aoki, Tokyo, JP;
Osamu Yamamoto, Toyota, JP;
Kazuyoshi Tashiro, Toyota, JP;
Goro Suzuki, Toyota, JP;
Shinichi Nomura, Toyota, JP;
Kosei Yoshida, Toyota, JP;
Nitto Kohki Co., Ltd., Tokyo, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
A pipe coupling member for high-pressure fluid such as liquefied hydrogen includes a seal ring having a highly effective sealing function to prevent leakage of the fluid. The seal ring () is set in a seal ring setting space () defined by a second radial surface () and a seal ring setting surface () of a first tubular member (), a forward end surface of a second tubular member (), and the outer peripheral surface of a valve seat member (). A forward end portion of the second tubular member () is provided with a communication hole () radially penetrating the forward end portion. The pressure of the high-pressure fluid on the downstream side of a valve seat surface () causes a fluid path in the second tubular member to be communicated with the sealing ring setting space () via the communication hole () and via a gap between the seal ring setting surface () and the outer peripheral surface of the forward end portion of the second tubular member.