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:
Jul. 16, 1985
Filed:
Jun. 09, 1983
Applicant:
Inventors:
Masao Hirabayashi, Kawagoe, JP;
Takeshi Mizutani, Kuwana, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B43K / ; B43K / ;
U.S. Cl.
CPC ...
401209 ; 401199 ; 401216 ;
Abstract
A writing instrument with a ballpoint pen comprising a metallic fine rod having a plurality of capillary holes for flowing ink from one end thereof through the other end in the interior thereof, a short cylindrical portion extending from one end thereof, and an annular narrowed portion on the peripheral edge of the front end of the short cylindrical portion; a hard ball rotatably fitted to and held inside the annular narrowed portion and the short cylindrical portion and being in contact with one end of the metallic fine rod inside the short cylindrical portion; and means for introducing aqueous ink connected to the other end of the metallic fine rod.