Electricity: measuring and testing – Electrical speed measuring – Including speed-related frequency generator
Patent
1998-06-12
2000-12-05
Patidar, Jay
Electricity: measuring and testing
Electrical speed measuring
Including speed-related frequency generator
32420725, 3242072, 32420712, G01P 348
Patent
active
061571865
ABSTRACT:
A rotation detecting apparatus comprises a casing body including a head portion, an installation bracket portion and a connector portion. A recess portion is formed at a side surface of the head portion. A magnet, a Hall-effect device and a circuit base plate are installed in the recess portion and are then covered with a sealing member. Further, a clearance groove is formed in the vicinity of a wall defining the recess portion. Therefore, the number of parts and the production cost of the apparatus are reduced, and the waterproof performance thereof is improved.
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Patents Abstracts of Japan, Ref. No. 60-82918, Rotation Detector, Sep. 10, 1985, vol. 9, No. 224.
Aoki Yuhide
Nakazawa Hirotsugu
Patidar Jay
Unisia Jecs Corporation
Zaveri Subhash
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