Patent ID: 7512243
Filing Date: 2009-03-31
Classification: A61F,B33Y,H04R

Abstract:
1. Hearing protection earplug comprising a shell for being worn at least in part in an ear canal of a user, said shell having a sound passage extending from an outer sound inlet opening of said shell to an inner sound output opening adapted to acoustically connect to said user's ear canal, and a noise attenuation button which is provided at an outer end of said shell, wherein said button is manually movable relative to said shell axially between a resting position in which said outer sound inlet opening of said shell is closed by said button and at least one communication position in which said outer sound inlet opening of said shell is at least partially opened by said button for sound communication between an environment and said sound passage of said shell, further comprising means for axially biasing said button towards said resting position, said biasing means comprising a spring seated at said shell and at said button.