Safety pressure relief valve
CA 1189420 A · Owner: Teledyne Farris Engineering · Inventors: Cullie, Eugene C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved safety pressure relief valve which is particularly applicable to valves utilizing pressure taps for sensing the pressure within the inlet nozzle, such as pilot operated valves. The valve includes a valve body having an inlet opening into which a full nozzle is inserted. An annular port surrounds the periphery of the nozzle. An opening in the nozzle leading to the annular port provides for the insertion of a pitot or dipper tube therein. The valve body includes a channel leading between the annular port and an external tap for the pressure sensing line connected to the pilot control means. The design permits the nozzle to be rotated to any angular position with respect to the …
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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
- Granted June 25, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 25, 2002.
- 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.