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. 29, 2020
Filed:
Nov. 20, 2018
Zebra Co., Ltd., Tokyo, JP;
Eriko Soejima, Tokyo, JP;
Tomoaki Koide, Tokyo, JP;
ZEBRA CO., LTD., Tokyo, JP;
Abstract
In a writing utensil with a pressurizing mechanism, a cylinder is provided such that it comes into sliding contact with an outer peripheral part of a valve element and moves back and forth. An inner wall face of the cylinder is provided with a ventilating recess communicating with outside air, and an annular non-pressure contact face is positioned on the rear side of the ventilating recess. When the cylinder moves forwardly, the valve element is brought into pressure contact with the non-pressure contact face to seal the pressurizing chamber and when the cylinder moves backwardly, the valve element is moved forward and is separated from the non-pressure contact face, such that the ventilating recess communicates with the pressurized chamber.