Flow rate sensing device
CA 1269292 C · Owner: Abrams, Lawrence M. · Inventors: Abrams, Lawrence M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flow rate sensing device particularly for use in regulating, the rate of flow in a system for parenteral administration of liquids to patients. The liquid emerges from a storage reservoir and is fed into a housing through an upstream flow passage portion and then is made to pass through a narrow throat passage wherein the velocity of the liquid increases while its pressure decreases. The liquid then emerges into a downstream flow through passage and flows through an outlet from the housing. In an intervenous fluid administration system, the housing outlet is connected to a terminal tubing section and an intravenous needle. A pressure transducer consisting of two chambers separated by a …
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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
- Granted May 22, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 2007.
- 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.