Apparatus and method for testing, filling and purging closed fluid systems
CA 2014899 C · Owner: De Rome, Raymond D. · Inventors: De Rome, Raymond D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An evacuation unit for testing the fluid tightness of a closed fluid system, filling the system with system fluid, and/or purging the system fluid of entrained gas. The evacuation unit includes a source of system fluid, an air operated venturi vacuum pump a, hose for releasable and sealable connection to an access port of the closed fluid system and a three way, valve for selected positioning between a first position communicating the vacuum pump with the flexible hose system to produce a vacuum in the system a second, position isolating the flexible hose and system to test for fluid tightness, and a third position communicating the system fluid source with the flexible hose and system for …
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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 April 19, 1990 and granted July 26, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2012.
- 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.