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:
Dec. 12, 1989
Filed:
Jun. 27, 1988
Samuel D Cappotto, Syracuse, NY (US);
Smith Corona Corporation, Cortland, NY (US);
Abstract
A ribbon or tape tensioning system for typewriter correction ribbons includes a brake for exerting a braking force on a supply or feed ribbon spool. The mounting capstan for the feed spool is provided with a toothed hub which can be engaged by a pawl rotatably mounted on an arm which in turn is rotatably mounted on the typewriter frame. The pawl and the arm are provided with abutments or projections which when brought into contact with the frame cause the pawl to disengage or engage the toothed hub, thus permitting the hub to rotate freely or be braked. A force applied by an element such as a spring biases the assembly in a direction to cause the capstan to exert a tension on the ribbon, except when the pawl is disengaged. When the tension on the ribbon exceeds a predetermined amount, the pawl is disengaged from the toothed hub, permitting its momentary rotation and relief of the tension.