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:
May. 22, 1990
Filed:
Oct. 17, 1988
Amel Hill, Carrelbury, FL (US);
Other;
Abstract
An acoustic transducer loudspeaker for converting variations of electrical energy into corresponding variations of acoustic energy is formed of one piece of foamed polymer material having different densities in different portions thereof. The one piece of foamed polymer material has a periphery portion of one density and a diaphragm portion formed in the center thereof and a resilient diaphragm suspension portion separating the periphery porition from the diaphragm portion and having a flexible polymer insert attached in a recess over the diaphragm suspension portion. A voice coil is fixedly attached to the diaphragm portion and a frame is mounted to the foamed polymer sheet periphery portion and extends over the diaphragm portion to support a permanent magnet thereon for alignment with the voice coil. A laminated cover panel can be laminated to the front of the foamed polymer sheet to provide a speaker and a ceiling tile or wall panel without a visible grill.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile