Horology: time measuring systems or devices – Chronological – With manually actuated display
Patent
1977-05-09
1982-03-30
Miska, Vit W.
Horology: time measuring systems or devices
Chronological
With manually actuated display
368321, 307116, G04C 1700, G04C 1900
Patent
active
043228330
ABSTRACT:
An electronic timepiece including timekeeping means, an electro-optical time display, and a circuit for setting the display is disposed within an electrically conductive case and an electrically conductive, optically transmissive face cover. A battery is coupled to energize the timekeeping means continuously and the display setting circuit selectively. The electrically conductive face cover and the electrically conductive case are insulated from one another and constitute electrodes of a switching circuit for selectively connecting the battery to energize the display circuit. The battery is electrically connected in series with the conductive case and display circuit, and the display circuit is electrically connected in series with the conductive face cover and battery, whereby the display circuit may be selectively energized by simultaneously contacting the exterior conductive surfaces of the face cover and case with a conductive body disposed outside of the case. The display circuit is operably responsive to a predetermined current range corresponding generally to the magnitude of the current conducted by the battery through the body of a person wearing the timepiece. A person wearing the timepiece with the conductive case disposed in electrical contact with the skin of his wrist or some other part of his body can actuate the display circuit by touching an accessible exterior conductive surface portion of the face cover with his finger or with some other part of his body.
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Micro Display Systems, Inc.
Miska Vit W.
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