A valve assembly and method for controlling fluid flow through a tube
CA 2480877 A1 · Owner: Schmaltz, Ronald Anthony · Inventors: Schmaltz, Ronald Anthony
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A valve assembly (44) for controlling the flow of fluid through a tube (52) by pinching the tube (52) to prevent fluid flow. The valve assembly (44) includes a valve (58) that receives the tube (52) in a passage between a plunger (76) and a bar (74). A spring (78) urges the plunger (76) toward the bar (74) to pinch the tube (52) closed. The bar (74) focuses the pinching force of the plunger (76) to reduce the pinching force required to prevent fluid flow. The valve assembly (44) also includes a caliper (60) for opening locking open and , closing the valve (58) and that is attached to the valve (58) with a cable (62). To open and close the valve (58) a main lever (88) and lock lever, …
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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 February 27, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 27, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 27, 2025.
- 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.