Abstract: A control device comprising three mechanical elements, one of which is moe relatively to the two others and one of these elements being an electret, whereas the two others are control electrodes. The mechanical mobile element forms a portion partially cut out of a plate 3. Applications to electrical (particularly telephone exchanges and optical information display) switching.
Type:
Grant
Filed:
December 23, 1977
Date of Patent:
June 3, 1980
Assignees:
Agence Nationale de Valorisation de la Recherche and Etat Francais, Etat Francais
Inventors:
Jacques Lewiner, Gerard Dreyfus, Jean-Yves Le Traon