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:
Sep. 20, 1994
Filed:
Feb. 01, 1994
Kabushiki Kaisha Sakura Kurepasu, Osaka, JP;
Abstract
A writing implement includes a valve device provided at a specified position along a liquid passage along which liquid to be applied flows. The valve device has a ball valve member, a chamber portion in which the ball valve member is placed, the chamber portion having a cross-section in the form of a non-circular substantially circumscribing the ball valve member, a sealing portion operable to come to contact with the ball valve member entirely along a circumference of the ball valve member to interrupt the flow of liquid, and a restricting portion operable to come to contact with a circumferential portion of the ball valve member to restrict the movement of the ball valve member toward a leading end of the writing implement.