Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1987-04-16
1988-09-13
Luebke, Renee S.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200 5A, H01H 1370
Patent
active
047711434
ABSTRACT:
The diaphragm keyboard comprises a baseboard from the bottom of which pins (11) project in vertical direction. These pins (11) pass through apertures (22) in an encoding plate (20) and extend beyond the surface thereof, thus presenting spacers for a diaphragm (30). In addition, they serve for retaining and aligning the encoding plate (20).
REFERENCES:
patent: 3600528 (1971-08-01), Leposavic
patent: 4128744 (1978-12-01), Seeger
patent: 4375585 (1983-03-01), Lee
patent: 4489227 (1984-12-01), Lamarche
patent: 4580018 (1986-04-01), Yoshihara
Luebke Renee S.
Wilhelm Ruf K.G.
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