Keyboard switch assembly having multilayer printed circuit structure
作者： Wolfgang Scherzer , Helmut Eberwein
DOI:
关键词:
摘要: An ultrasonic remote control device of the type having an integrated switching network formed in a multilayer printed circuit and mechanical means whereby at least some connection paths intersect cross matrix with manually operable to connect each intersecting path common potential, for example ground.
lens.org 参考文章(14)
Wayne V Leposavic, Multiple switch construction ,(1969)
Robert N Nanninga, Snap switch having a concavo-convex diaphragm ,(1961)
Morris Krakinowski, Electrical keyboard switch mechanism with improved resilient diaphragm contact actuator ,(1970)
W Leposavic, Keyboard switch assembly with improved movable contact ,(1971)
M Pobog, W Lien, Low profile keyboard switch assembly with snap action cantilever contact ,(1972)
Charles E. Braue, Pressure-operated layered electrical switch and switch array ,(1970)
William J Lynn, Richard E Seeger, Keyboard switch assembly with dome shaped actuator having associated underlying contactor means ,(1973)
Per G. Wareberg, Gilbert H. Durkee, Alan C. Yoder, Calculator keyboard switch with disc spring contact and printed circuit board ,(1973)
Marcotti Egidio, Rivetta Gianfranco, Switch pushbutton-type digit keyboard switch with leaf spring contract and actuator biasing means on common conductive frame ,(1973)
Laurence J Keough, Keyboard electronic apparatus and method of making ,(1972)