The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 12, 2004
Filed:
Oct. 08, 2002
Claus Zimmermann, Westlake Village, CA (US);
Robert E. Evans, Cleveland, OH (US);
Other;
Abstract
An advanced design for an electrostatic and an electrolytic loudspeaker assembly ( ) that comprises a compound diaphragm ( ) sandwiched between a first metal stator ( ) and a second metal stator ( ), wherein each stator includes a multiplicity of perforations ( ). All the sides of the stators ( ) as well as the inside surface of the perforations ( ) are coated with an insulating material ( ) also known as ACOUSTAGUARD™ ( ) which includes a base coat ( ) and a sealing and pigmentation coat ( ). The coats ( ) and ( ) are applied by a unique process that allows ACOUSTAGUARD™ to be applied at room temperature by preferably a spraying technique. The application of ACOUSTAGUARD™ avoids any arcing or corona discharge between the two stators ( ) which can distort the audio output and damage the loudspeaker assembly ( ).