发明名称 Reelable ear plugs for construction helmets
摘要 A construction helmet is disclosed having a housing detachably mounted thereon which supports a ratcheted take-up reel having a pair of ear plugs attached to a hub by flexible cords wound about the hub. The reel is rotatably carried on the housing and a manually operable plunger releases the reel for automatic withdrawal of the ear plugs into a storage receptacle on the housing. Strain relief elements are attached to each cord and the receptacle includes shoulder straps engageable with the strain relief elements. The plunger is releasably connected to ratchet teeth carried on the reel hub.
申请公布号 US5581821(A) 申请公布日期 1996.12.10
申请号 US19950494346 申请日期 1995.06.26
申请人 NAKANO, STEVEN A. 发明人 NAKANO, STEVEN A.
分类号 A42B3/16;A61F11/12;B65H75/40;B65H75/44;(IPC1-7):A42B3/16 主分类号 A42B3/16
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