Accumulator with a valve connected float
CA 2055331 C · Owner: Schneider, Jeffry A. · Inventors: Schneider, Jeffry A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid-gas accumulator having a housing with a top gas port and a bottom liquid port. A spring-loaded normally open valve is, positioned in the liquid port and a buoyant float is rigidly connected to the valve element for controlling the opening and closing of the valve in response to the liquid level in the housing. A resilient seal may be provided between the float and the valve element positioned to seat around the valve as the valve closes thereby providing a secondary seal.
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 November 12, 1991 and granted August 9, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 12, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 12, 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.