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:
Mar. 23, 1976
Filed:
Dec. 30, 1974
Applicant:
Inventors:
Assignee:
The Sailor Pen Co., Ltd., Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B43k / ;
U.S. Cl.
CPC ...
401216 ;
Abstract
A socket for holding the writing ball of a ball point pen comprising an outer tubular member having a circular cross section and an inner tubular member having an elliptic or circular cross section, wherein an ink-conducting chamber or chambers are defined between the inner peripheral wall of the outer tubular member and the outer peripheral wall of the inner tubular member, thereby enabling ink to be conducted smoothly from an ink cartridge provided in the ball point pen through the chambers to the writing ball.