专利汇可以提供Method of joining a hearing protector and a protective helmet and device for applying same专利检索,专利查询,专利分析的服务。并且Method of joining a hearing protector and a protective helmet wherein the yoke part between the earcup and the helmet has been made of a leaf spring, which has been attached to the helmet or to an intermediate part on same either integrally or turnably in a longitudinal vertical plane for the purpose of turning the earcups up into a position at rest, and which comprises an arrangement for spring force adjustment, characterized in that the upper end of the leaf spring has been shaped to be a spiral resembilng a watch spring and that adjustment of the spring tension has been arranged to take place by turning the centre shaft of the spiral or the device serving this function.,下面是Method of joining a hearing protector and a protective helmet and device for applying same专利的具体信息内容。
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