Articulated annular sludge lance
CA 2107002 C · Owner: The Babcock & Wilcox Company · Inventors: Kamler, Frank
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An articulated annular sludge lance and method is described for cleaning sludge from tubes in a steam generator from the annular chamber surrounding the tube bundle. The articulated annular sludge lance is moved around the annular chamber and directs a fluid distribution member between the tubes to effectively clean sludge from the tubes. The articulated annular sludge lance and method can also be used in the no tube lane or in combination with a no-tube lane method.
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 September 27, 1993 and granted November 28, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 27, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 27, 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.