Electricity: circuit makers and breakers – Multiple circuit control – Multiple switch
Patent
1985-05-07
1987-01-27
Scott, J. R.
Electricity: circuit makers and breakers
Multiple circuit control
Multiple switch
200 86R, 200159B, H01H 1370
Patent
active
046395598
ABSTRACT:
A membrane keyboard containing a larger size key pad label and a smaller size key pad labels; a pair of laminate sheets carry confronting conductor electrodes, each of the conductor electrodes being shaped to exactly follow the corresponding key pad label; and spacer sheet disposed between the pair of laminate sheets for electrically separating the confronting conductor electrodes. The spacer sheet is provided with a plurality of openings formed at positions corresponding to each of the conductor electrodes. The openings corresponding to the larger size key pad labels are divided into at least two sections through the use of, for example, a bridge layer extending across the opening, thereby uniforming the key actuation condition.
REFERENCES:
patent: 3392247 (1968-07-01), Check
patent: 3591749 (1971-07-01), Comstock
patent: 3699294 (1972-10-01), Sudduth
patent: 3721778 (1973-03-01), Seeger Jr. et al.
patent: 3722086 (1973-03-01), Wikkerink et al.
patent: 3821500 (1974-06-01), Newman
patent: 4037069 (1977-07-01), Gonzalez et al.
patent: 4145584 (1979-03-01), Otterlei
patent: 4345119 (1982-08-01), Latasiewicz
patent: 4375585 (1983-03-01), Lee
patent: 4382165 (1983-05-01), Balash et al.
patent: 4400595 (1983-08-01), Ahumada
patent: 4471177 (1984-09-01), Doughty
patent: 4555601 (1985-11-01), Taguchi
Scott J. R.
Sharp Kabushiki Kaisha
LandOfFree
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 Membrane keyboard, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Membrane keyboard will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-859063