Pinch roll and shear combination
CA 2108400 C · Owner: Thomas, John E. · Inventors: Thomas, John E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pinch roll and shear combination for use in a mill such as a reversing hot strip mill. The pinch roll and shear combination includes a stationary frame provided with a rotatably mounted lower roll and stationary lower blade adjacent the lower roll. A rectilinearly movable carriage is mounted on the frame with a piston for moving the carriage. An upper roll is rotatably mounted on the carriage and cooperates with the lower roll to form a pinch roll. An upper blade assembly is mounted on the carriage and cooperates with the lower blade to form a shear.
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 14, 1993 and granted January 14, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 14, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 14, 2015.
- 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.