Calibration system for magnetic switches used in wrist instrumen

Details Calibration system for magnetic switches used in wrist instrumen Calibration system for magnetic switches used in wrist instrumen

1976-04-26

1977-04-19

Swisher, S. Clement

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

G01P 2100

Patent

active

040180786

ABSTRACT:
A method and apparatus for calibrating inertia operated magnetic switches of the type used in wrist watches is provided. The system involves moving the magnet in the switch along an upper bore of the switch body towards a conducting member normally bridging switch contacts at the opposite end of the body until a point of travel is reached at which the conducting member is lifted from the switch contacts to the magnet. The magnet is then sealed at this point of travel and is properly positioned for correct operation of the inertia switch.

REFERENCES:
patent: 3132220 (1964-05-01), Uri et al.
patent: 3636622 (1972-01-01), Schmitt

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