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:
Mar. 17, 1998
Filed:
Sep. 12, 1995
Tatsuo Tamura, Kuwana, JP;
Kenji Yagi, Nagoya, JP;
Yasuaki Makino, Okazaki, JP;
Ichiro Izawa, Anjo, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
In a magnetism detecting apparatus, a magnetoresistance element is positioned adjacent to a gear with teeth to be responsive to magnetic field applied thereto. The gear is shaped such that each of the teeth satisfies SA/(SA+SB)<0.125, where SA denotes a cross-sectional area of a tip portion of each of the teeth, which tip portion is measured through 10% of a height of each of the teeth taken from a tip of each of the teeth, and SB denotes a cross-sectional area of a notch portion of each notch between the teeth, which notch portion has a height corresponding to the height of the teeth. As a result of this configuration, distortion contained in an output signal based upon high and low threshhold values from the magnetoresistance element can be eliminated. In addition, variations in intervals of a pulse signal obtained by performing a waveform shaping operation can be reduced, even when a distance between the gear teeth and the magnetoresistance element is varied.