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:
Oct. 24, 2017
Filed:
Jun. 04, 2013
V Spark Co., Ltd., Saitama-shi, Saitama, JP;
Masayuki Kawasaki, Soka, JP;
V SPARK CO., LTD., Saitama-Shi, Saitama, JP;
Abstract
A writing instrumentincludes a pen tip mechanism, an ink tank, an ink induction mechanism, and a regulator mechanism. The ink tankincludes first and second ink tanksA andB. The pen tip mechanismincludes first and second pen tipsA andB. The ink induction mechanismincludes first and second induction coresA andB. A regulator flow path set around the first induction coreA and the second induction coreB is partitioned into first and second regulator flow paths by the regulator mechanism. The first and second regulator flow paths are temporary accommodation spaces of inks and circulation spaces for sending air from the induction coresA andB to the ink tanksA andB.