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:
Sep. 11, 2001
Filed:
Jun. 09, 2000
Tadashi Keda, Kawagoe, JP;
Yoshihide Mitsuya, Kawagoe, JP;
Kotobuki & Co., Ltd., Kyoto, JP;
Abstract
A knocking writing utensil for use with a writing medium includes an external cylinder for receiving the writing medium located inside the external cylinder, the medium being urged rearwardly, a rotational cam mechanism including a cam cylinder capable of rotating and moving rearwardly and forwardly inside the external cylinder and regulating rearwardly movement of the writing medium, a cam body for rotating the cam cylinder at a predetermined angle each time the cam cylinder is propelled forwardly so that the cam cylinder moves alternately to a forward position and a withdrawal position, and a cam bar capable of pushing the cam cylinder forward. A knock body is connected with the cam bar so that a knock operation is feasible, the knock body undergoing a knock operation so that the cam cylinder rotates as well as moves rearwardly and forwardly in the axial direction to drive the writing medium. A window, from which an interior of said external cylinder is visible, is provided at a portion of a circumferential surface of the external cylinder. A rotational drum, rotating in an interlocking fashion with rotation of the cam cylinder and including indications on an outer circumferential surface thereof, is located inside the external cylinder so that the indications are visible from the window.