Sonic emitter with foam stator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Jun 20, 2002
app pub date -
Oct 16, 2001
filing date -
Jan 7, 1998
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A speaker device comprising an electrostatic emitter film which is responsive to an applied variable voltage to emit sonic output based on a desired sonic signal, used in combination with at least a first foam member having a forward face, an intermediate core section and a rear face. The forward face is composed of a composition having sufficient stiffness to support the electrostatic film and includes conductive properties which enable application of a variable voltage to supply the desired sonic signal. The surface of the forward face includes small cavities having surrounding wall structure defining each cavity which terminates at contacting edges approximately coincident with the forward face of the foam member. The film is applied to the forward face of the foam member and biased in direct contact with the contacting edges of the forward face.
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