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:
Apr. 15, 2014
Filed:
Sep. 07, 2010
Applicant:
Stefan Hornfeck, Geroldsgrün, DE;
Inventor:
Stefan Hornfeck, Geroldsgrün, DE;
Assignee:
Faber-Castell AG, Stein, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A45D 40/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A rotary pencil includes a sleeve-shaped shaft having a front end and a rear end, a threaded spindle mounted to be fixed against rotation and axially movable in said shaft and having an at least single-start external thread. At least one threaded element is fixed in axial and rotating directions relative to the shaft and engages into the external thread. The front end of the external thread is adjoined by a cylindrical spindle section which extends over the entire circumference of the spindle, namely a free-running section, and has an external diameter corresponding to a core diameter of the external thread.