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. 06, 2026
Filed:
Nov. 16, 2023
Mitsubishi Pencil Company, Limited, Tokyo, JP;
Yoshiharu Namiki, Tokyo, JP;
Makoto Tamura, Tokyo, JP;
MITSUBISHI PENCIL COMPANY, LIMITED, Tokyo, JP;
Abstract
A click-action writing instrumentcomprises a rear shaft, an inner cylinderhaving on a side surface thereof an elastic deformation portionthat can elastically deform radially outward and inward, and a rotor. The elastic deformation portion has a first protrusionon the outer surface thereof. The elastic deformation portion has a second protrusionon the inner surface thereof. The first protrusionis configured to cause the elastic deformation portion to deform radially inward when the inner cylinder is inserted into the rear shaft. The second protrusion, in a state prior to insertion of the inner cylinder into the rear shaft, causes the elastic deformation portion to deform radially outward when the rotor is inserted into the inner cylinder. The deformed elastic deformation portion is configured to recover after the rotor is inserted.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile