Automatable castellated roller bending machine
CA 2002334 C · Owner: Gravier, Michel · Inventors: Gravier, Michel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a roll bending machine used to bend sheet metal the castellated rollers are subject to the pressure of a series of three presser rollers whose axes are parallel to the axes of the castellated rollers namely a median presser roller exerting pressure simultaneously on each of the castellated rollers and so-called lateral rollers the line of contact between the lateral rollers being situated above the plane defined by the axes of the castellated rollers the axes of the rollers in the so-called mobile combination of the presser and castellated rollers being essentially fixed in relation to each other.
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 November 6, 1989 and granted April 20, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 6, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 6, 2011.
- 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.