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:
Feb. 20, 1979
Filed:
Aug. 18, 1977
Applicant:
Inventors:
Richard F Porterfield, Cortland, NY (US);
Richard E Shattuck, Cortland, NY (US);
Assignee:
SCM Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
4002166 ; 400208 ; 400212 ; 400225 ; 400236 ; 400259 ; 400266 ; 400375 ;
Abstract
A ribbon feed mechanism for a typewriter has a linkage for incrementally feeding a ribbon, a power roll rotated by a motor and a control member actuated by a printing mechanism for connecting the power roll to the linkage to incrementally feed the ribbon. The control member is also actuated by a carriage shift mechanism when shifting a carriage from an upper case position to a lower case position for connecting the power roll to the linkage to incrementally feed the ribbon.
Porterfield, Richard. (1979). Ribbon feed mechanism responsive to case shaft mechanism and printing (U.S. Patent No. 4140407). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4140407
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile