Grip of writing material
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United States of America Patent
Stats
-
Jul 10, 2007
Grant Date -
Jun 8, 2006
app pub date -
Nov 15, 2005
filing date -
Apr 12, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A grip of a writing material is formed by providing a plurality of flange-like on a surface of a middle shaft portion of a shaft cylinder and in parallel across an axis of the shaft cylinder, the plurality of flange-like projections projecting in a radial direction of the shaft cylinder, and integrally covering the flange-like projections with a cylindrical cover in a closable manner so that spaces are formed inside the cover. When a user grips the grip of the writing material with his or her fingers, the pressure allows the cover to be borne by the adjacent flange-like projections, while moving air inside the spaces to deform the cover. The deformation absorbs the pressure from the fingers. Further, the adjacent flange-like projections limits the deformation of the cover, thus enabling the initial positional relationship of the fingers to be maintained. The user can thus use the writing material for a long time.
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