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:
Jan. 19, 2010
Filed:
May. 10, 2006
Applicant:
Rainer Kaufmann, Delmenhorst, DE;
Inventor:
Rainer Kaufmann, Delmenhorst, DE;
Assignee:
edding AG, Ahrensburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B43K 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A writing utensil for a free-flowing writing fluid, comprising a closed reservoir with the writing fluid therein that has an outlet aperture for the writing fluid and a further aperture, an elongate writing tip which communicates with the outlet aperture of the reservoir and is slidably supported, and a valve which is disposed inside a communicating path between the writing tip and reservoir and interacts with the writing tip so as to cause the valve to open the communicating path if a force acts onto the writing tip, wherein the further aperture connects the reservoir to the surroundings via an air line.