Fire safe valve
CA 2088474 C · Owner: Baker, Gerald S. · Inventors: Baker, Gerald S.; Taylor, William M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fire safe valve which includes a body having an inlet, an outlet, a valve chamber communicating with the inlet and the outlet and having an opening a bonnet, secured to the body and having a bore therethrough with the opening of the bore communicating with the valve chamber opening and defining a back seat surrounding the bore a, valve member, a valve stem connected to the valve member and extending through the bonnet bore, a backseating shoulder on the valve stem, an actuator said valve stem, connecting to the actuator to move the valve member within the valve chamber to open and close flow through the valve a temperature sensitive material retaining said valve stem shoulder spaced from …
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 January 29, 1993 and granted August 6, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 29, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 29, 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.