Back lighted, full travel push button membrane keyboard

Details Back lighted, full travel push button membrane keyboard Back lighted, full travel push button membrane keyboard

1984-01-11

1984-12-18

Shepperd, John W.

Electricity: circuit makers and breakers

Electric switch details

Indicators

200159B, 200340, 200DIG47, H01H 918

Patent

active

044892276

ABSTRACT:
A keyboard having a side-lighted transparent support plane including a plurality of light-pipes vertically projecting therefrom through an overlying foam over-travel pad. A pair of patterned membrane switch layers, separated by a low density foam spacer, overly the over-travel pad and are positioned relative to a plurality of key-caps slidably mounted to the light-pipes. The sensation of key travel is achieved via the over-travel pad and/or a foam spring mounted beneath the key-caps with switch contact being made intermediate full key depression. An audible click is achieved via overlapping slidably abrasive projections.

REFERENCES:
patent: 3773997 (1973-11-01), Evans et al.
patent: 4302647 (1981-11-01), Kandler et al.
patent: 4362911 (1982-12-01), Sears et al.

Affiliated with

Also associated with

Rating

Back lighted, full travel push button membrane keyboard does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Back lighted, full travel push button membrane keyboard, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Back lighted, full travel push button membrane keyboard will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1989716