Electricity: measuring and testing – Electrical speed measuring – Including speed-related frequency generator
Patent
1995-03-21
1997-06-10
O'Shea, Sandra L.
Electricity: measuring and testing
Electrical speed measuring
Including speed-related frequency generator
32420721, 32420725, G01P 3487, G01R 3309, G01B 714
Patent
active
056379951
ABSTRACT:
A magnetic detection device including a biasing magnet for generating a bias magnetic field directed to an object of detection having a magnetic material; a magnetoresistance effective element disposed at an inclination of about 45.degree. to the direction of the bias magnetic field to provide a change in resistance caused by the bias magnetic field in accordance with movement of the object of detection, so as to detect a change in state of the bias magnetic field via the change in resistance of the magnetoresistance effective element; and the biasing magnet having a hollow portion containing a holder for holding the magnetoresistance effective element in a position between a surface of the biasing magnet and the object of detection and close to the surface of the biasing element.
REFERENCES:
patent: 4296376 (1981-10-01), Bartol, Jr.
patent: 4492922 (1985-01-01), Ohkubo
patent: 4922197 (1990-05-01), Juds et al.
patent: 5115194 (1992-05-01), Luetzow et al.
patent: 5134371 (1992-07-01), Watanabe et al.
patent: 5321355 (1994-06-01), Luetzow
patent: 5325056 (1994-06-01), Shonowaki et al.
Aoyama Seiki
Izawa Ichiro
Kajimoto Kazuo
Kasumi Shigehiro
Konda Shinichi
Nippondenso Co. Ltd.
O'Shea Sandra L.
Phillips Roger
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