发明名称 Writing implement with two retractable cartridges
摘要 In a writing implement with two cartridges (12,22) the housing is divided in two parts connected together by a pivot. The cartridges are pressed by spring force against cams (14a,24a) which are arranged on the other housing. The cams have such a profile that the writing points (12a,22a) are driven out in the opened position of the housings but retracted in the closed position into the housings. The closing action retracts the writing points into the housings; the opening out action drives out the writing points.
申请公布号 US4549827(A) 申请公布日期 1985.10.29
申请号 US19840571474 申请日期 1984.01.17
申请人 MACK, WOLFGANG 发明人 MACK, WOLFGANG
分类号 B43K24/02;B43K24/10;B43K27/12;(IPC1-7):B43K27/12 主分类号 B43K24/02
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