Process for making wire mesh screens
CA 1284358 C · Owner: Scheeler, James William · Inventors: Scheeler, James William; Collier, John Donald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is disclosed for making steel wire products having a high carbon content. High carbon steel wire is heated at the vicinity of its junction with at least one similar wire placed across the former. The heat is maintained for a sufficient period of time to allow heat to disperse to adjacent wire areas but insufficient to cause wire fusion. The wires are welded and the heat subsequently is raised in a post weld heating step to a temperature in the upper critical range. The resulting wire screen subsequently is quenched.
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
- Granted May 21, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 21, 2008.
- 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.