发明名称 Sharpener for creating a frusto-conical tip
摘要 A razor-blade type sharpener for sharpening a writing instrument to provide a frusto-conical tip. The sharpener has a blade carrier that includes a first cutting blade for sharpening the writing instrument to provide a longitudinally tapered portion, and a second cutting blade having a cutting edge extending transversely to the first cutting blade for cutting a distal end of the writing instrument to provide a blunt end portion. Accordingly, the blade carrier is capable of providing a frusto-conical tip having a broad point on a writing instrument, which has been found particularly desirable for crayons. A container for a writing instrument, each including such a blade carrier, are also provided.
申请公布号 US2004261275(A1) 申请公布日期 2004.12.30
申请号 US20030654079 申请日期 2003.09.03
申请人 HUNT HOLDINGS, INC. 发明人 FREGEOLLE GERALD PAUL;WONG WING FAI
分类号 B43K23/00;B43L23/00;B43L23/02;B43L23/08;B43M99/00;(IPC1-7):B43L23/00 主分类号 B43K23/00
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