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:
Oct. 27, 1998
Filed:
Jan. 11, 1996
Shuhei Kageyama, Kawagoe, JP;
Kotobuki & Co., Ltd., Kyoto, JP;
Abstract
A mechanical pencil providing a cushioning action by the action of a sleeve disposed inside of an outer barrel. The mechanical pencil comprises an outer barrel, and a lead pipe disposed inside the outer barrel. The lead pipe has a chuck mounted in the end thereof. The pencil further comprises a chuck ring mounted on the outside of the chuck, a sleeve contacting a rear end of the chuck ring slidable relative to the outer barrel, and a spring interposed between the sleeve and the lead pipe. The sleeve has a plurality of flexible pieces that spread outwardly in a radial direction. A part of each flexible piece 24a is inserted into a stopper hole formed on an inner wall of the outer barrel. An inclined portion contacting the rear end of the stopper hole is formed on an outer surface of each of the flexible pieces.