Auxiliary port cleaner for boiler wall sensing port
CA 2039384 A1 · Owner: The Babcock & Wilcox Company · Inventors: Vetterick, Richard C.; Anderson, Paul T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cleaner for a boiler wall port used by various instruments, including light or, sound wave receiving or emitting devices in which the device is mounted to a wallbox surrounding the port and extending from the boiler wall. The wallbox terminates in a mounting flange spaced from the boiler and to which the device is attached. The device includes a wave guide terminating in a flange attached to the wallbox mounting flange. The cleaner includes a weldment attached to the wallbox mounting flange and an actuator mounted to the weldment. The actuator is coupled to a cutting sleeve disposed within the wallbox and moveable into and out of the boiler wall port. The cutting sleeve is coupled to the …
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 March 28, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 28, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 28, 2013.
- 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.