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:
Nov. 18, 2008
Filed:
Mar. 10, 2005
Applicants:
Takeo Fukumoto, Yokohama, JP;
Kyo Nakayama, Yokohama, JP;
Hitoshi Suzuki, Yokohama, JP;
Inventors:
Assignee:
Mitsubishi Pencil Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B43K 21/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A lead holding structure of a mechanical pencil where a predetermined lead holding force is maintained so that a lead does not move even if a writing pressure is repeatedly applied to the lead and where a so-called biting-off of a lead (break) is prevented without damaging the lead in repeatedly sending forward and backward operations.