发明名称 Electrically powered device for opening and closing the visor of a crash helmet
摘要 The device comprises a small electric motor driving, through reduction gearing, a gear segment associated with the visor pivot point. The gear segment has a configuration which includes a quarter of a circle and a straight portion which imparts the visor with an initial forward movement followed by a pivotal movement during the opening phase, and vice versa during the closing phase.
申请公布号 US4546498(A) 申请公布日期 1985.10.15
申请号 US19830472437 申请日期 1983.03.07
申请人 FANTIN, LINO 发明人 FANTIN, LINO
分类号 A42B3/00;A42B1/18;A42B3/22;(IPC1-7):A42B3/02 主分类号 A42B3/00
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