Paper sheets binder with dual post orientation
CA 2093328 C · Owner: Taurus Holdings, Inc. · Inventors: Groswith, Charles T. Iii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A paper sheets binder has a pair of elongated strips (40 50), one strip (40) mounting a spaced integral hinged pawls and the second strip (50) mounting matching spaced integral bifurcated ratcheted posts (51 52. 53). The strips forming legs (54. 55) are mounted on front and back margin edges of a paper sheets stack (7). The post legs are oriented so that the end posts (51 52), have a major axis parallel to the longitudinal axis of the strip. Breakage at the root of the end post legs is essentially prevented upon bowing of the document and strips and resultant shear forces. The intermediate posts (53) are oriented so that the legs major axis is transverse to the strip longitudinal axis to …
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
- Filed October 1, 1991 and granted December 23, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 1, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 1, 2013.
- 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.