Steam generator tube support plates with slotted disc springs
CA 2449357 A1 · Owner: Babcock & Wilcox Canada Ltd. · Inventors: Sun, Nansheng
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved support for a tube bundle of a nuclear steam generator has a pair of plates separated by spacers and holding slotted disc springs used to mount, tubes through tube holes of the pair of plates. The slotted disc springs deform upon, installation and substantially eliminate tube vibration during use thereby , extending, the useful life of the tubes. At the same time the springs limit the pressure , drop, between sides of the support and enhance the heat transfer from the tubes.
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 November 13, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 13, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 13, 2025.
- 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.