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. 26, 1977
Filed:
Apr. 08, 1976
Applicant:
Inventor:
Richard E Busch, La Puente, CA (US);
Assignee:
Addmaster Corporation, San Gabriel, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
197161 ;
Abstract
A diameter sensing, reversible ribbon drive mechanism including disabling cams pivotal about the axes of the ribbon spools for disabling the drive and detent pawls for one spool and enabling similar pawls for the other spool. A first link connecting the drive pawls is oscillated during each printing cycle. A second link connecting the disabling cams carries a coupler which is moved into one coupling relation with the first link by a diameter sensing device which senses a depleted condition of one of the spools to cause the first link to transfer movement to the second link to reverse the conditions of the drive and detent previously enabled pawls.