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US 5,775,828 AGranted
Writing implement
AssigneeKabushiki Kaisha Pilot Corporation
InventorYasuo Ikeda
Life of this patent
Estimating the term…
Abstract
A writing implement of the present invention is capable of stably feeding ink to the tip of a writing member so that the writing member is able to draw lines in a fixed width and in a fixed ink density. The writing member is formed by superposing thin strips so as to form an ink passage of the shape of a minute gap therebetween. The ink is fed to the tip of the writing member by capillarity of the ink passage. Thus, the ink can be always stably fed to the tip of the writing member regardless of changes of the environment.
Claims10
A writing implement comprising:
- a barrel to receive therein an ink tank, said barrel having a front end;
- a feed tube mounted at said front end of said barrel, said feed tube having a feed groove extending therethrough;
- a writing member including strips superposed on each other and defining therebetween a minute gap forming an ink passage extending therethrough, said strips having rear parts fixedly secured to each other and remaining parts forwardly of said rear parts not secured to each other and resiliently movable relative to each other;
- said writing member being fitted in said feed groove of said feed tube with a front part of said writing member projecting forwardly from a front end of said feed tube and with said ink passage located to communicate with the ink tank to be received in said barrel;
- whereby when writing pressure is applied to said front part of said writing member, said remaining parts other than said fixedly secured rear parts of said strips are caused to slide relative to each other during writing, thereby to remove dry ingredients of ink sticking to said strips.
2 more elements
Dependencies are inferred from the claim text.