| 摘要 |
An earmuff ( 3 ) includes a disc-shaped elastomeric pressure-equalizing element ( 6 ) that lies between an inner end of a cup ( 4 ) and an outer face of an annular element ( 7 ). The elastomeric element ( 6 ) is found to provide a more consistent blocking of environmental sound. The cup inner end has a radial projection 15 that projects into a recess 19 , and the elastomeric element is bent to lie between the projection and the walls of the recess. |
