Apparatus for sensing the extent of turning of a rotatable part

Details Apparatus for sensing the extent of turning of a rotatable part Apparatus for sensing the extent of turning of a rotatable part

1981-05-12

1983-09-27

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Control by direction of rotation of shaft or spindle

H01H 316

Patent

active

044069340

ABSTRACT:
Apparatus for sensing the extent of rotation of a rotatable part relative to a fixed part, comprises a pair of rings one of which is fixed and the other is rotatable, which define between them an annular space. Disposed in the annular space is a third ring carried by the rotatable ring, whose rotated position is sensed by a device carried by the fixed ring, by any of a variety of mechanisms, in a manner and to an extent such as indicates the degree of rotation of the rotatable part. At least one switch actuator is carried by the third ring and a switch device is carried by the fixed ring. The switch actuator also detects the extent of relative movement between the third ring and the fixed ring.

REFERENCES:
patent: 2427453 (1947-09-01), Hadley
patent: 2816187 (1957-12-01), Smith
patent: 2913544 (1959-11-01), Goddard
patent: 2920156 (1960-01-01), Rice et al.
patent: 3233053 (1966-02-01), Parks
patent: 3248956 (1966-05-01), Kuhn

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