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:
May. 28, 1991
Filed:
May. 02, 1990
Sergio Uggetti, Ivrea, IT;
Ing. C. Olivetti & C., S.p.A., Ivrea, IT;
Abstract
A cassette for a printing ribbon comprises a casing accommodating a supply spool which has a tube on which the printing ribbon is wound. An anti-unrolling element of plastics material comprises two portions of elongate shape, which are connected by means of an integral elastic hinge. The first portion performs a guiding and positioning function and is accommodated by means of a slot within the casing. The second portion has a blocking function with regard to the tube, and is movable on the outside of the casing, by means of the elastic hinge, from an inoperative position in which it is aligned with the first portion to an operative position in which it is rotated through 180.degree. and is substantially in superposed relationship with the first portion. The second portion is provided with a hook element which, in its operative position, engages the tube through an opening in the casing for positively blocking the supply spool both during storage and during transportation of the cassette to inhibit unrolling in a simple and reliable manner.