Surge arrester
CA 1318346 C · Owner: Asea Brown Boveri Ab · Inventors: Stengard, Peter; Johnnerfelt, Bengt; Thors, Bengt
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An open surge arrester comprises on the one hand, an active, part with a number of surge arrester elements of a metal oxide varistor material, arranged between two end fittings and, on, the other hand, a retaining part with a number of rods of an insulating material for mechanically holding the surge arrester together. Both the active part and the retaining part are exposed to the environment surrounding the surge arrester and are individually profiled to provide an extended creep distance between the end fittings.
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 25, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 25, 2010.
- 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.