发明名称 EAR-PROTECTION CUP FOR EAR MUFFS OR HEADPHONES
摘要 An ear-protection cup for ear muffs or headphones comprising a cup-shaped frame and a resilient sealing membe located at the peripheral edg thereof, by means of which the ear-protection cup can be brought into abutment with an annular shaped part of a user's head located around the ear. The frame is composed of a rigid, cup-shaped outer shell and an inner wall spaced from the outer shell and extending for a substantial way between the inner parts of the outer shell to which it is rigidly connected. The inner wall thus defines between itself and the outer shell an intermediate space in which a layer of elastomeric material is arranged compressed between the outer shell and the inner wall.
申请公布号 CA2054832(C) 申请公布日期 1996.07.23
申请号 CA19912054832 申请日期 1991.11.01
申请人 PELTOR AKTIEBOLAG 发明人 LUNDIN, RUNE
分类号 A42B3/16;A61F11/14;G10K11/22;H04R1/10;(IPC1-7):A42B3/16;H04R1/02 主分类号 A42B3/16
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