Fluid coupling with adjustable pressure relief valve
CA 2180744 C · Owner: Marrison, William C. · Inventors: Allread, Alan R.; Marrison, William C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A quick disconnect coupling (10) for a liquid handling system is disclosed. When disconnected the first and second coupling members (11, 12) are valve closed. The second coupling member (12) includes an adjustable pressure relief feature. By moving an adjustable member (41), the operating pressure for the pressure relief can be varied and set at a desired level.
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 February 23, 1995 and granted October 6, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 23, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 23, 2017.
- 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.