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:
Jun. 29, 1982
Filed:
Jul. 28, 1980
Samuel D Cappotto, Syracuse, NY (US);
SCM Corporation, New York, NY (US);
Abstract
A releasable ribbon locking device is used to keep a ribbon taut in a typewriter ribbon cartridge. The device includes a locking member carrying a blade or brake urged by a spring into abutting relationship with a rotatable ribbon supply support to prevent unwinding of fresh ribbon from the supply. A lock release member is movably coupled to the locking member and supports a ribbon tensioning element in engagement with a portion of the ribbon extending from the ribbon supply. In operation, a ribbon feed mechanism pulls on the ribbon which moves the lock release member through the tensioning element and correspondingly moves the locking member to rotatably free the ribbon supply support from abutment with the brake and allows the ribbon to unwind from the supply. Upon completion of the ribbon feed operation, the spring operates to move the brake against the supply support for preventing indiscriminate unwinding of the ribbon and to move the tensioning element so as to continually engage the ribbon in order to maintain it taut in the cartridge.