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. 03, 1991
Filed:
Aug. 30, 1989
Applicant:
Inventor:
Markus Burgin, Uster, CH;
Assignee:
Pelikan, Inc., Franklin, TN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
400234 ; 400208 ; 400242 ;
Abstract
The spring (6) has two radially aligned legs (7, 8) and a circular-segment-shaped web (9) connecting the legs. The web (9) is inserted with initial stress in a circumferential groove (10) of an unwinding core (3). The free end of the leg rests against a stop (11). The free end of the leg (8) is bent at a right angle. The right-angle bend forms a deflecting organ (12), around which the ribbon (5) is fed. The surface of the spring (6) is roughened and abrasive at least in the area of the web (9). The spring (6) is preferably phosphatized for this purpose. By means of this design, a uniform ribbon tension over the entire running time of the ribbon is achieved.