Measuring instrument cam-actuated microswitch unit

Details Measuring instrument cam-actuated microswitch unit Measuring instrument cam-actuated microswitch unit

1986-12-30

1988-02-23

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Indicating instrument

200153T, G01D 1326, H01H 332

Patent

active

047272279

ABSTRACT:
A cam-actuated microswitch unit has cams the positions of which can be varied relative to a drive shaft to vary the switch-actuating point. The unit includes a plurality of microswitches rigidly connected to a support while the cams are frictionally retained in a selected angular orientation on the drive shaft which can be connected to a measuring instrument so that its angular orientation is representative of the magnitude of a physical quantity to which the instrument is sensitive. The cams are connected to index pointers which can be moved over a movable scale fixed for rotation with the drive shaft to determine and to display the switch point settings.

REFERENCES:
patent: 3090397 (1963-05-01), Spencer
patent: 3451026 (1969-06-01), Siri et al.
patent: 3678758 (1972-07-01), Lawrence
patent: 3914770 (1975-10-01), Reis

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