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:
Jun. 18, 1996
Filed:
Sep. 17, 1993
Nippondenso Co., Ltd., Kariya, JP;
Abstract
A rotation angle sensor has a cylindrical rotating member attached to a cam shaft of an internal combustion engine for rotation therewith, and a pickup. The rotating member has a portion formed on its inner peripheral surface for detection of a crank angle. The pickup has a column-shaped support portion and is attached coaxially with the rotating member with the support portion rotatably inserted into a hole which is formed in a casing of the internal combustion engine. A detecting portion provided at a distal end of the support portion is positioned inside the rotating member to detect a position of the crank angle detection portion during rotation of the rotating member and output a signal. The pickup further has an arc-shaped elongate hole which is formed to extend about a central axis of the support portion, so that the pickup is fixed to the casing of the internal combustion engine with a bolt inserted through the elongate hole. The pickup, by loosening the bolt, is easily turned to change its angular position with respect to the rotating member. Thus, ignition timing of the internal combustion engine, which is controlled based on the signal from the rotation angle sensor, can be easily adjusted and the structure for the adjustment is simple and inexpensive.