Electronic beam welding method for screen cylinder
CA 1266889 C · Owner: Izuwa, Akio · Inventors: Izuwa, Akio; Yamaguchi, Tadanobu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electronic beam welding method for a screen cylinder for welding junctions between both ends of rod-like pieces arranged at regular intervals and flanges with an electronic beam is disclosed in which the welding is effected so that the irradiation direction of the beam is directed in the same surface as said junction surface and inclined with respect to a welding direction and the beam penetrates the flanges.
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 March 20, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 20, 2007.
- 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.