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. 08, 2013
Filed:
Mar. 28, 2007
Masatoshi Okada, Mito, JP;
Iwao Taira, Nihonmatsu, JP;
Tadashi Abiko, Nihonmatsu, JP;
Yosuke Kondo, Nihonmatsu, JP;
Kazuki Takeno, Fukushima, JP;
Ichiro Yamane, Fukushima, JP;
Masatoshi Okada, Mito, JP;
Iwao Taira, Nihonmatsu, JP;
Tadashi Abiko, Nihonmatsu, JP;
Yosuke Kondo, Nihonmatsu, JP;
Kazuki Takeno, Fukushima, JP;
Ichiro Yamane, Fukushima, JP;
NOK Corporation, Tokyo, JP;
Abstract
A high performance sealing device having an excellent pressure resistance and realizing a prevention of damage. The sealing device usable at a working pressure of 0 to 2 MPa, and not damaged even if the pressure of high-pressure fuel of 5 MPa or higher is applied thereto, wherein high pressure fuel on the high pressure side is sealed by a first seal part, oil from a cam side on a low pressure side is sealed by a second seal part, and the fuel slightly leaked due to failure of scraping at the first seal part is sealed by the second seal part to form a dual seal structure. A resin ring coming into slidable sealing contact with a shaft is used in the first seal part, whereby abnormal abrasion does not occur even when fuel having less lubricity is used, and the durability of the seal is increased.