Overlaying of weld metal onto metal plates
CA 2108274 C · Owner: Browne, George William · Inventors: Kostecki, Gene; Browne, George William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for applying weld metal for the purpose of hard-facing of metal plates (10) and a method of operation of the apparatus. A metal plate (10) is moved through an apparatus in which there are weld heads (43) including welding electrodes (49). The metal plate has a slight induced convexity in the region of the welding heads so that an accurate distance is maintained between the welding electrode and the surface of the metal plate. The convexity is formed by a wheel assembly (31) under the plate and the wheel assembly may also include cooling means (38). The advantage of the flat plate system is that long lengths of plate may be hard-faced.
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 April 15, 1992 and granted July 4, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 15, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 15, 2014.
- 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.