Ribbon storage mechanism
CA 1107772 A · Owner: International Business Machines Corporation · Inventors: Helinski, Edward F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, Apparatus for packing ribbon into a storage compartment in regular, uniform pleats. A pair of eccentric rotating feed rolls form a nip gripping the ribbon and alternately extend peripheral portions into the storage compartment beyond fixed stripping elements on opposite sides of the nip to form the ribbon in corresponding folds. The regular folding provides efficient storage and uniform compaction pressures, and permits reliable ribbon withdrawal when the storage compartment is used for an endless ribbon.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted August 25, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.