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:
Jan. 05, 2010
Filed:
Feb. 16, 2005
Koichi Hirano, Yokohama, JP;
Koichi Hirano, Yokohama, JP;
Mitsubishi Pencil Co., Ltd., Tokyo, JP;
Abstract
A ball-point pen, wherein a cover member () is fitted to a joint member () connecting a writing tip () rotatably supporting a writing ball () at the tip thereof to an ink storage tube. When the cover member () is fitted to the joint member () along the outer peripheral surface thereof, a part of the cover member does not come within 0.2 mm (within the range of the chain double-dashed line) from around the writing tip. Thus, even if the accuracies of parts and assembly machines are dispersed, a problem with an existing ball-point pen wherein a cover member is brought into contact with a writing tip and the writing tip is damaged in an assembly step can be avoided.