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    • 4. 发明申请
    • SELF-SEALING RETRACTABLE WRITING INSTRUMENT
    • 自密封可折叠书写仪器
    • WO2003089253A1
    • 2003-10-30
    • PCT/US2003/011930
    • 2003-04-17
    • AVERY DENNISON CORPORATIONCARROLL, CraigLEWIS, Charles, Richard, Jr.VON ESSEN, Kevin, C.
    • CARROLL, CraigLEWIS, Charles, Richard, Jr.VON ESSEN, Kevin, C.
    • B43K24/02
    • B43K5/17B43K8/028
    • This invention provides a retractable writing instrument (100) that substantially prevents writing fluid from evaporating through the tip (102) when the tip (102) is in a retracted position to eliminate the need for a cap. Within the writing instrument (100) is an enclosure member (300) that has a vapor chamber (306). In the retracted position, the tip (102) of the writing instrument (100) is within the vapor chamber (306) to substantially seal the tip (102) from ambient air so that writing fluid does not evaporate through the tip (102) The enclosure member (300) has a lip (302) that opens to allow the tip (102) to move forward and extend from the writing instrumen (100) so that writing fluid can be delivered to the writing surface for writing. When the tip (102) is moved back into the retracted position the lip (302) closes to substantially seal the tip (102) from the ambient air. An external compression may be made of a material that is durable so that the lip (302) does not wear out after many cycles of moving the tip (102) between the retracted and protracted positions, such as silicone, butyl rubber, and thermoplastic vulcanizate (TPV) material including butyl rubber cross-linked with polypropylene.
    • 本发明提供一种可伸缩书写工具(100),当笔尖(102)处于缩回位置时,基本上防止书写液体通过尖端(102)蒸发,以消除对帽子的需要。 在书写工具(100)内是具有蒸气室(306)的封闭构件(300)。 在缩回位置,书写工具(100)的尖端(102)在蒸气室(306)内,以将尖端(102)与环境空气基本密封,使得书写流体不会通过尖端(102)蒸发。 封闭构件(300)具有开口以允许尖端(102)向前移动并从写入步骤(100)延伸的唇缘(302),使得书写流体可以被输送到书写表面以进行书写。 当尖端(102)移回到缩回位置时,唇缘(302)关闭,从而使尖端(102)与环境空气密封。 外部压缩可以由持久的材料制成,使得在缩回和延伸的位置(例如硅树脂,丁基橡胶和热塑性硫化橡胶)之后移动尖端(102)的许多循环之后,唇缘(302)不会磨损 (TPV)材料,包括与聚丙烯交联的丁基橡胶。