Touch type contactless switch structure for electronic wristwatc

Details Touch type contactless switch structure for electronic wristwatc Touch type contactless switch structure for electronic wristwatc

1976-01-07

1977-11-29

Scott, James R.

Electricity: circuit makers and breakers

Multiple circuit control

Pivoted contact

58 50R, 200 52R, 200159R, 200DIG2, G04B 1930, H01H 3500

Patent

active

040599566

ABSTRACT:
An electronic wristwatch is provided with a touch type contactless switch structure for the purpose of altering the operational mode thereof, which comprises a pair of switch electrodes one being disposed on the viewing window in the engagement relationship with a portion of the operator body and the other being constituted of the enclosure thereof made of electrically conducting material. The one electrode is a film of transparent conductive material and, has an end area leading to the movement accommodated within the interior of the wristwatch. Both of the electrodes are isolated from each other via an electrically non-conducting member of low-melting point glass disposed therebetween which includes an extension overlaying the one electrode at the peripheral portion of the viewing window for allowing for moisture invasion.

REFERENCES:
patent: 3737670 (1973-06-01), Larson
patent: 3757322 (1974-09-01), Barkan et al.
patent: 3823550 (1974-07-01), Bergey
patent: 3983690 (1976-10-01), McClintock

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