Title:
BISTABLE ELECTRET DEVICE
Document Type and Number:
Japanese Patent JPS53111464
Kind Code:
A
Abstract:
The invention relates to electret bistable systems comprising two fixed electrodes forming a capacitor. A sheet of electret material is inserted for creating holding forces in two rest positions of a moving element located in the capacitor gap. In accordance with the invention, the electret sheet is separated from the corresponding fixed electrode by a layer of dielectric which can be an air gap. As a variant, the charge density of the electret sheet may be concentrated in islands for reducing the holding forces.
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Inventors:
FURANSOWA MISHIERON
JIYAN RIYUKU BURUNEERU
PIEERU RUKURUKU
JIYAN RIYUKU BURUNEERU
PIEERU RUKURUKU
Application Number:
JP11678A
Publication Date:
September 29, 1978
Filing Date:
January 04, 1978
Export Citation:
Assignee:
THOMSON CSF
International Classes:
G09F9/37; G09G3/34; H01G7/02; H01H59/00; H01H36/00; H02N1/00; (IPC1-7): G06K15/18; G11B11/08; H01G7/02; H01H36/00