Encapsulated spark gap and method of manufacturing
CA 2108828 A1 · Owner: Siemens Aktiengesellschaft · Inventors: Boy, Juergen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In order to guarantee that the gas atmosphere of the structure of an encapsulated spark gap (9) is reliably protected from the effect of moisture two flat discharge surfaces of two dish-type electrodes (1,6) each designed, with a collar-shaped rim (2) abut on both sides of a thin insulating layer (4) having punched holes. A tubular glass insulator (3) is sealed on the front side into the collar-shaped rims of the two electrodes. During the course of their manufacturing, the electrodes are placed with their collar-shaped rim on the front sides of the glass insulator are inductively heated and, under the, action of an axially directed pressing force are driven toward one another, and pressed …
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 October 20, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 20, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 20, 2015.
- 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.