H - Electricity – 04 – R
Patent
H - Electricity
04
R
349/65
H04R 17/00 (2006.01)
Patent
CA 1129540
ABSTRACT OF THE DISCLOSURE The construction and method of operating a signal generator which provides an electrical output in response to an input mechanism such as a loading by finger are dis- closed. The generator has the appearance of a plate and includes a sandwich structure comprising a conductive substrate, a coating of piezoelectric material and usually a plurality of discrete electrodes joined to the exposed surface thereof. The coating is deposited on the substrate as a slurry and is chemically bonded to the substrate. In order to produce an electrical output signal, prescribed locations on the plate are subjected to a force such as can be applied by the touch of a finger and a voltage is generated across the piezoelectric coating between the point of contact on the substrate and the adjacent electrode. The output signal is used either directly or after being amplified to drive various functionally responsive devices.
323595
Essex Transducers Corporation
Swabey Ogilvy Renault
LandOfFree
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