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:
Sep. 16, 2003
Filed:
Oct. 05, 1998
Nokia Mobile Phones Ltd., Espoo, FI;
Abstract
The invention relates to an arrangement for improving leak tolerance in an earpiece ( ) of a radio device. The invention can be applied preferably in mobile stations. One idea of the invention is that an acoustic volume ( ) is arranged behind the earpiece by taking advantage of the RF shield casing ( ) of a radio frequency unit of the device. By means of the invention one can form behind the earpiece an acoustic volume which loads optimally the earpiece without therefore needing to enlarge the size of the device. In an embodiment of the invention one wall of the casing arranged behind the earpiece has been formed by means of an electronic circuit board ( ), to which circuit board radio frequency components ( ) of an electronic unit have been connected. Then between the casing and the external volume one can preferably form an acoustic path by means of through holes ( ) arranged in the circuit board.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile