Programmable switch

Details Programmable switch Programmable switch

1978-03-27

1980-10-21

Moy, Joseph Man-Fu

Electricity: circuit makers and breakers

Liquid contact

Time delay

200292, 200 5A, 340365R, H01H 1352, H01H 1306

Patent

active

042296331

ABSTRACT:
A programmable switch in the form of an output display similar to those generally known in the art as a seven-segment display used for digital display of output. This programmable switch provides a plurality of segments that can operate as a switch to generate a numerical or alphabetical program for entry into an electronic program circuit. The plurality of segments are recessed into the face of the switch body so that a stylus instrument can be inserted into the recess of individual segments to generate in each switch body the desired number, letter or other symbol. A plurality of switch bodies may be positioned adjacent one another to increase the number of digits or indicia to be entered into an electronic program circuit. For all segments there is one conductive layer which acts as the "common" side of the electric circuit. Beneath the conductive layer is a segmented printed circuit which is contacted by the "common" side conductive layer when a stylus instrument is inserted into a recess of a switch segment. One common can serve all the switch segments. One version has an open-cell foam layer between the "common" conductive layer and the printed circuit board for electrical isolation between the common and printed circuit prior to actuation of a switch by insertion of the stylus into the segment.

REFERENCES:
patent: 3503031 (1970-03-01), Nyhus et al.
patent: 3584162 (1971-06-01), Krakinowski
patent: 3745287 (1973-07-01), Walker
patent: 3760137 (1973-09-01), Shimojo et al.
patent: 3968336 (1976-07-01), Johnson

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