A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 11/06 (2006.01) A61F 11/14 (2006.01)
Patent
CA 2718910
A semi-insert hearing protector includes a thin-walled enclosure sized substantially to that of the outer ear of a wearer, the enclosure being made from a rigid or semi-rigid material and secured to the head of said wearer by means of an adjustable headband. A short tube extends from the enclosure for communication with the ear canal, the short tube being made from a rigid or semi-rigid material and including a flexible cuff disposed over the tube made from a resilient material. The enclosure contains sound absorbing material configured to vary the frequency characteristic of sound attenuation by the semi-insert.
La présente invention concerne un dispositif de protection auditive à semi-insert qui comprend une enceinte à parois minces dont les dimensions correspondent sensiblement à celles de loreille externe dun utilisateur. Lenceinte est en matériau rigide ou semi-rigide et fixée à la tête dudit utilisateur au moyen dun serre-tête ajustable. Un tube court s'étend depuis lenceinte afin de communiquer avec le conduit auditif. Ledit tube est en matériau rigide ou semi-rigide et comprend un manchon souple disposé sur le tube et fait en matériau élastique. Lenceinte contient un matériau absorbant le son conçu pour modifier les caractéristiques de fréquences de latténuation du son par le semi-insert.
Blake Cassels & Graydon Llp
Syracuse University
LandOfFree
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