Communications: electrical – Digital comparator systems
Patent
1974-11-18
1977-01-25
Caldwell, John W.
Communications: electrical
Digital comparator systems
323 53, 324 34PS, 336119, 336120, 336129, 340204, 360123, G08C 904, G08C 1928
Patent
active
040053962
ABSTRACT:
A digital displacement sensor includes a plurality of zigzag coils provided with projecting or convex portions having different pitches and arranged on the surface of a flat plate. A magnetic head consisting of a magnetic body and a coil is wound around part of the magnetic body, the magnetic head being supported so as to be moved, while maintaining a given gap from the surface of the flat plate, whereby a digital signal corresponding to the displacement of the magnetic head is sensed by means of a plurality of zigzag coils.
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Fujiwara Hideo
Ichino Kazuo
Ichinose Yukio
Itoh Michiyasu
Orita Isamu
Caldwell John W.
Groody James J.
Hitachi , Ltd.
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