发明名称 Structure for reduced ink evaporation
摘要 There is disclosed a writing unit better known as a refill for writing instruments, comprising a cap housing a cartridge composed of an ink accumulating capillary body, and a smaller diameter, greater capillary capacity ink feed member connected between the writing tip and the adjacent end of the capillary body. Air enters the case through a hole axially between the writing tip and the adjacent end of the capillary body and the forward end of a tubular cap sealingly engages the case, the tubular cap covers the portion of the feed member otherwise in contact with the atmosphere and the adjacent end of the capillary body so as to reduce evaporation of ink from capillary parts.
申请公布号 US4209263(A) 申请公布日期 1980.06.24
申请号 US19780872103 申请日期 1978.01.25
申请人 WATERMAN SA 发明人 DROUBAY, MICHEL
分类号 B43K7/00;B43K7/10;B43K8/02;(IPC1-7):B43K5/00 主分类号 B43K7/00
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