Keyboard switch assembly with printed circuit board

Details Keyboard switch assembly with printed circuit board Keyboard switch assembly with printed circuit board

1979-01-25

1981-09-01

Scott, James R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

174 685, 200159B, 200267, 200292, 361416, H01H 1370, H05K 100, G11C 1100

Patent

active

042873940

ABSTRACT:
A circuit board and a method of making same having a plurality of conductor lines wherein at least one portion of at least one line is superimposed over a portion of at least one other line to define at least one intersection. A substrate is provided of insulating material and a first insulating coating is applied to at least one side of the substrate. A first set of conductive nonintersecting lines is applied to the varnished coating and a coating of insulating varnish is applied on and around the conductive lines only in the vicinity of the intersection. A second set of nonintersecting conductive lines define the intersection with the first set by being applied onto the substrate. The circuit board may be used in a multiple circuit keyboard switch assembly. A conventional type pushbutton bridging contact array selectively interconnects conductor lines at particular switch sites.

REFERENCES:
patent: 3560256 (1971-02-01), Abrams
patent: 3665126 (1972-05-01), Gabor
patent: 3699294 (1972-10-01), Sudduth
patent: 3732389 (1973-05-01), Kaelin et al.
patent: 3760137 (1973-09-01), Shimojo et al.
patent: 3796843 (1974-03-01), Durkee et al.
patent: 3932722 (1976-01-01), Obata et al.
patent: 3996430 (1976-12-01), Eberwein et al.
patent: 4180711 (1979-12-01), Hirata et al.
Webster's New World Dictionary of the American Language, College Edition, World Publishing Co., 1968, pp. 615 and 1612.

Affiliated with

Also associated with

Rating

Keyboard switch assembly with printed circuit board does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Keyboard switch assembly with printed circuit board, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Keyboard switch assembly with printed circuit board will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1677430