Device for mounting and dismounting shaft-furnace tymps
CA 2045915 C · Owner: Sand, Edouard · Inventors: Mainz, Edmond; Bonani, Nicolas; Hutmacher, Victor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The device comprises a gripper with retractable claws which can engage through the tymp, and control means which pass through the gripper and can be controlled from outside in order to, spread or retract the claws radially with respect to the axis of the tymp. The gripper and its control, means are carried by a yoke designed to be fitted onto the outer edge of the tuyere arch and to be, associated with a conventional pneumatic explosive-actuated tool which can be fitted to the outside, of the yoke, either onto extensions of the claws or onto the control means in , order to exert by its, rotation and its bearing on the yoke a tractive force on the claws of the gripper.
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 June 28, 1991 and granted March 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 28, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 28, 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.