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:
Sep. 19, 2006
Filed:
Nov. 27, 2001
Koji Okazaki, Ichinomiya, JP;
Masayoshi Matsui, Ichinomiya, JP;
Keiichi Oozawa, Kakamigahara, JP;
Takahiro Suzuki, Nagoya, JP;
Koji Okazaki, Ichinomiya, JP;
Masayoshi Matsui, Ichinomiya, JP;
Keiichi Oozawa, Kakamigahara, JP;
Takahiro Suzuki, Nagoya, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
According to the present invention, there is provided a pressure sensor unit () having a ring-like pressure sensing element (), which is formed separately from a spark plug, in the state where a spark plug () has been attached a rear end of at least one of an inner cylinder member () and an outer cylinder member () in the direction of an axis (O) is located between the rear end of the pressure sensing element () and the rear end of a insulator () of the spark plug (standard section (SS)), while at the rear of the standard section (SS), no component of the pressure sensor unit () exists in an area inside the inner circumferential surface of the outer cylinder member () or its extended plate (EP).