Cap for writing tool
First Claim
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1. A writing tool comprising:
- a cylindrical shell having a pen point side and a grippable portion which is gripped by the user of said tool for writing therewith;
a cap which is removably fitted on said pen point side of said cylindrical shell, said cap having a plurality of longitudinal ribs disposed on its inner peripheral surface, wherein said cap is made from a hard resin; and
an elastic member, having a uniform lengthwise diameter, wherein said elastic member is disposed on said grippable portion, and wherein said elastic member is capable of contacting said ribs when said cap is mounted or removed, thereby reducing the contact area and hence the contact force between said cap and said elastic member.
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Abstract
A cap, for a writing tool having on the outside of a cylindrical shell an elastic member made of a material different from that of the cap, including a plurality of longitudinal ribs formed on the inner peripheral surface of the cap in such a manner as to extend along the longitudinal direction of the cylindrical shell. The end portions of the plurality of the longitudinal ribs on the opening edge side of the cap are each formed in the shape of an arch.
19 Citations
8 Claims
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1. A writing tool comprising:
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a cylindrical shell having a pen point side and a grippable portion which is gripped by the user of said tool for writing therewith; a cap which is removably fitted on said pen point side of said cylindrical shell, said cap having a plurality of longitudinal ribs disposed on its inner peripheral surface, wherein said cap is made from a hard resin; and an elastic member, having a uniform lengthwise diameter, wherein said elastic member is disposed on said grippable portion, and wherein said elastic member is capable of contacting said ribs when said cap is mounted or removed, thereby reducing the contact area and hence the contact force between said cap and said elastic member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification