Safety pressure relief valve assembly, components therefor and methods of making the same
CA 2220170 C · Owner: Nusbaumer, Joseph M. · Inventors: Woods, Ronald; Nusbaumer, Joseph M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A safety pressure relief valve assembly is provided wherein the safety pressure relief valve assembly has a first tubular body with a first end and a second end, a wall of given thickness with a bore through the body with an internal flange and a valve support in the bore, a means on the first end of the body for attaching the body to the venting system of a fuel tank a valve, seat in the internal flange, a valve member adapted for resting on the seat and having a stem extending from one side of the valve member, a biasing means for biasing the valve member against the valve seat in a direction toward the first end a discharge, means in the second end having an enclosing flange for 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
- Filed October 31, 1997 and granted August 1, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 31, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 31, 2019.
- 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.