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:
May. 31, 1994
Filed:
Jan. 19, 1993
Applicant:
Inventors:
Takeshi Wakai, Tokyo, JP;
Masahiko Nagai, Tokyo, JP;
Assignee:
Tombow Pencil Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B43K / ;
U.S. Cl.
CPC ...
401202 ; 401213 ; 401243 ;
Abstract
To provide an air passage, exteriorly to a swallowed pen cap, a penholder cap is formed in one body. A groove is placed side by side to the direction of cap axis from closed end edge of a cap body toward the other open end. On the end of the groove, at least one rib is disposed. This rib has an end extended on the groove up to the open edge of the cap. This rib is projected from the surface of a cap body and a connection supporting part which holds a rib is provided away from the outside surface of the tightening part.