Importance

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Abstract

At the time of gripping a writing instrument, a certain degree of gripping force is required for the thumb and other fingers gripping the grip section so that the grip section will not slip. The normal way for supporting the writing instrument only at three points by the thumb, the index finger and the middle finger is not enough for reducing the loads to the thumb and other fingers because excessively large force is unconsciously exerted to the thumb and other fingers. It is also difficult to put the writing instrument in a pocket, a pencil case, etc. When gripping the writing instrument, the direction for gripping the barrel is forcibly determined. The present invention provides a writing instrument including a barrel, the barrel comprising an enlarged-diameter section formed generally at a lengthwise central area thereof, a grip section disposed at a front part of the enlarged-diameter section and an interdigital abutment section disposed at a rear part of the enlarged-diameter section, the interdigital abutment section having a reduced-diameter.

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First Claim