Measuring and testing – Speed – velocity – or acceleration – Temperature compensator
Patent
1990-05-18
1992-05-05
Chapman, John E.
Measuring and testing
Speed, velocity, or acceleration
Temperature compensator
73517B, 335217, G01P 1513
Patent
active
051096935
ABSTRACT:
A pair of torquer magnets each comprising a cup-shaped yoke is provided with a disk-like permanent magnet and a pole piece. A through-hole provided through the center of the torquer magnet and a spool member made of a magnetic compensating metal is inserted into and fixed in the through-hole. The spool is shaped to have a central portion intermediate its end of a substantially smaller diameter.
REFERENCES:
patent: 3325757 (1967-06-01), Gang
patent: 3325758 (1967-06-01), Cook
patent: 3498138 (1970-03-01), Stewart
Fukano Michio
Hojo Takeshi
Kato Mitsuru
Chapman John E.
Tokyo Keiki Co. Ltd.
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