The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 1998
Filed:
Aug. 03, 1995
Naoto Kudo, Tokyo, JP;
Zebra Co. Ltd., Tokyo, JP;
Abstract
A writing tool including: a cylindrical shell containing ink of a solid-liquid separation type and a stirring piece; an ink flow-out control mechanism disposed in the cylindrical shell, which includes a valve main body having an ink introducing port around the peripheral surface thereof, and a valve which is contained in the valve main body in such a manner as to freely advance and retreat and which is biased in the valve closing direction by a coil spring; and a writing tool mounted to the cylindrical shell through the ink flow-out control mechanism; wherein an enclosed ink containing cylindrical body having a suitable length and diameter is disposed in the cylindrical shell; the ink and the stirring piece are contained in the ink containing cylindrical body; and an ink flow-out port for supplying the ink from the ink containing cylindrical body into an ink introducing port of the valve main body is formed at a suitable portion of the ink containing cylindrical body.