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. 04, 1977
Filed:
Feb. 06, 1976
Applicant:
Inventor:
Adriano Zaltieri, Ivrea (Turin), IT;
Assignee:
Ing. C. Olivetti & C., S.p.A., Ivrea (Turin), IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J / ; B41J / ; H02P / ;
U.S. Cl.
CPC ...
197151 ; 197161 ; 242 7551 ; 318-7 ;
Abstract
An arrangement for transferring a ribbon from a feed spool to a take-up spool comprises a pair of electric motors each one connected to a corresponding spool for the rotation thereof. The motor connected to the take-up spool is supplied by a constant current generator so as to wind-up said ribbon with a minimum and substantially constant torque. The motor connected to the feed spool is supplied by a constant voltage generator so as to keep said ribbon constantly taut during the transferring thereof. A changeover device alternates the function of the two spools when the ribbon is fully wound on the take-up spool.