Temperature activated diversion valve
CA 2261392 C · Owner: Westinghouse Air Brake Company · Inventors: Cunkelman, Brian L.; Ray, Jennifer L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A temperature activated diversion valve for supplying a first inflow fluid as an outflow fluid and for switching to supply a second inflow fluid as the outflow fluid if the first inflow fluid reaches a specified temperature. The temperature activated diversion valve includes a first inflow conduit for carrying the first inflow fluid a second inflow conduit for carrying the second inflow fluid an outflow conduit and a valve member. The valve member is moveable between a first position and a second position and establishes fluid communication between the first inflow conduit and the outflow conduit in the first position while blocking fluid communication between the second inflow conduit and …
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 February 8, 1999 and granted June 11, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 8, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 8, 2021.
- 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.