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. 31, 2002
Filed:
Dec. 21, 1999
Ichiro Morimoto, Osaka, JP;
Kiyoto Shigematsu, Tokyo, JP;
Isao Shimada, Tokyo, JP;
Eiji Hishinuma, Tokyo, JP;
Isao Inagaki, Gifu, JP;
The Sailor Pen Co., Ltd., Tokyo, JP;
Abstract
A nozzle is formed on a distal end side of a cylinder The nozzle has an intermediate portion formed such that a tip is freely attachable thereto and detachable therefrom. The intermediate portion of the nozzle is formed with an annular projection for retaining the tip The tip has a thick portion provided in a root portion thereof and formed larger in diameter than a root portion of the nozzle to be abuttable against a tip releasing member Along an inner periphery of the root portion of the tip an annular projection is formed to contact with the annular projection of the nozzle thereby providing a seal with the nozzle Both the annular projections and of the nozzle and the tip are arranged to reach a position where a sound of abutment is produced between the root end surface of the tip and the shoulder of the nozzle at the completion of fitting of the tip onto the nozzle