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US 5,196,755 AGranted
Piezoelectric panel speaker
OwnerF. Douglas Shieldsinventor
Life of this patent
Estimating the term…
Abstract
An acoustic transducer system includes a plurality of individual transflexural piezoelectric elements potted in a plastic or rubber compound. The panel is able to radiate broad-band, high intensity sound waves in a controllable radiation pattern.
Claims10
An acoustic transducer device, comprising:
- an array of piezoelectric driver elements, each of said piezoelectric driver elements including a support member, a pair of conductive plates loosely bonded to said support member to form a space between the plates, and a pair of piezoelectric layers on at least one surface of each of said pair of plates;
- means for electrically connecting said piezoelectric driver elements to a varying electrical signal source for causing said piezoelectric layers to expand and contract, causing said plates to vibrate with a transflexural motion at a frequency of expansion and contraction of said layers;
- and
- means including a panel made of a flexible material in which said piezoelectric driver elements and connecting means are potted.
1 more element
Dependencies are inferred from the claim text.