Vacuum switching tube
CA 1296038 C · Owner: Oberndorfer, Klaus · Inventors: Bialkowski, Gunther; Mick, Burkhard; Oberndorfer, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vacuum switching tube comprises a simplyconstructed housing which is established in that cap-like metal portions are soldered blunt to the end faces of a ceramic portion, in that the metal parts comprise a cylindrical region of reduced wall thickness in the region of the ceramic parts, in that a step is formed in the inner wall at the transition to the thick-wall region to the thinwall region, in that a vapor shield comprises an expanded edge region, and in that the edge region lies against the thin-wall cylindrical region and against the step and is soldered thereto. The tube is suitable for vacuum switching tubes in which the temperature coefficient of the metal portions is not matched …
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 February 18, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 18, 2009.
- 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.