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:
Oct. 07, 1986
Filed:
Apr. 02, 1985
Applicant:
Inventor:
Stephen G Swinburne, Scarborough, ME (US);
Assignee:
Shape Inc., Biddeford, ME (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65H / ; B41J / ;
U.S. Cl.
CPC ...
400242 ; 400207 ; 4002081 ; 400232 ;
Abstract
A ribbon cartridge having a self-contained ratchet assembly and drive gear assembly. Three principal components are provided: a drive gear; a ratchet gear spool connected by a ring gear formed thereon to the drive gear; and a take-up spool having internal teeth which are rotatably mounted on a ratchet formed on the external diameter of the ratchet gear spool. The drive gear is driven by a simple printer motor at a constant speed, which, in turn, drives the ratchet gear spool at a constant speed. This action, in turn, drives the take-up spool through the flexible plastic ratchet at a speed that varies with the amount of ribbon accumulating on the take-up spool.