Gas insulated electrical apparatus having insulating supports made of bisphenol a-cycloaliphatic epoxy resins resistant to arced sf.sub.6
CA 1211806 A · Owner: Westinghouse Electric Corporation · Inventors: Hofmann, Charles F.; Bolin, Philip C.; Dale, Steinar J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
51,047, 12, ABSTRACT OF THE DISCLOSURE Gas insulated electrical apparatus includes an outer housing, an inner conductor disposed within the outer housing, and sulfur hexafluoride insulating gas electrically insulating the inner conductor from the outer housing. An insulating spacer is utilized to support the inner conductor within the outer housing and is made from an epoxy resin consisting of bisphenol A and cycloaliphatic resins, an anhydride curing agent, an accelerator and a, filler combination of fused silica and alumina trihydrate.
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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 September 23, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 23, 2003.
- 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
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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.