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. 13, 1976
Filed:
Nov. 29, 1974
Applicant:
Inventors:
Assignee:
Tokyo Boshi Kabushiki Kaisha, Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B43K / ;
U.S. Cl.
CPC ...
401265 ; 401292 ;
Abstract
Pen point for writing instrument comprising a cylindrical article composed of united thermoplastic synthetic resin monofilaments, said cylindrical article being provided with an even number of more than 4 of radial curved narrow slots having capillary action and extending toward the center of the cylindrical article from the inside of the outer periphery, which are confined by triangular projected segments, top of which segment is circular and side walls of said radial curved narrow slot being formed by a plurality of semicircles, which are arranged so that the semicircles in the opposite side walls are engaged with each other under writing pressure.