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:
Mar. 06, 2007
Filed:
Aug. 25, 2004
Christoph Widmer, Wernetshausen, CH;
Christian Berg, Uerikon, CH;
Christoph Widmer, Wernetshausen, CH;
Christian Berg, Uerikon, CH;
Phonak AG, Staefa, CH;
Abstract
The invention relates to a hearing protection earplug, comprising a shell for being worn at least in part in the ear canal of a user and a faceplate () at the outer end of the shell or within a cavity of the shell having an outer opening, wherein the faceplate is provided with adapter means () for acoustically connecting, in a detachable manner, a measuring hole () extending into the interior of the shell with an external measuring tube (). The adapter means () are adapted to detachably connect to a removable multi-function plug () comprising means () for closing the measurement hole (). The invention also relates to a use of such an earplug, a method for manufacturing such an earplug and to a multi-function plug to be used with such an earplug.