Device for sensing reciprocated armature position

Details Device for sensing reciprocated armature position Device for sensing reciprocated armature position

1991-03-01

1992-05-05

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

137554, 310 15, 3242072, 340551, 361179, H02K 3300, H01L 4306, G01R 3306, F16K 3106

Patent

active

051110920

ABSTRACT:
Two opposed poles of a permanently magnetized circuit establish a relatively large air gap. An armature element (15) is displaceably interposed in the gap between these poles. The armature element establishes a first relatively small gap to one of these poles when in a first position of adjacency to the other of these poles, and the armature element establishes a second relatively small gap to the other of said poles when in a second position of adjacency to said one pole. Pole-fringing flux is manifested laterally of that one of the relatively small gaps which uniquely identifies the instantaneous presence of the armature in one of its two positions, and a detector of fringe flux at one of the two gaps (18) provides an indication of the positional status of the armature with respect to the poles.

REFERENCES:
patent: 4086519 (1978-04-01), Persson
patent: 4267544 (1981-05-01), Wiblin
patent: 4310143 (1982-01-01), Determan
patent: 4319236 (1982-03-01), Brace et al.
patent: 4524932 (1985-06-01), Bodziak
patent: 4578956 (1986-04-01), Young
patent: 4673827 (1987-06-01), Sommer

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