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:
Mar. 12, 1991
Filed:
Feb. 15, 1990
Georg Keil, Gross-Bieberau, DE;
Firma Merz & Krell GmbH & Co., Gross-Bierberau, DE;
Abstract
A writing utensil for three different leads is provided in which due to the use of a special front part and a pusher housing being easily insertable into the same, a conventional writing utensil with only one lead can be converted in a simple and robust fashion to a three-color writing utensil. The pusher housing loosely inserted into the shaft housing, which supports the leads, has a profiled contour and can tilt freely into one of several predetermined tilting positions under the effect of gravity and as a function of the rotary position of the shaft housing in order to bring a selected lead into a ready position from which it can be displaced into the writing position.