Increased sensitivity coriolis effect flowmeter using nodal-proximate sensors
CA 2184751 C · Owner: Levien, Andrew Keith · Inventors: Patten, Andrew Timothy; Levien, Andrew Keith; Stack, Charles Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An increased sensitivity Coriolis flowmeter (310) having one or more drivers (D) oscillating a flow tube (130) or, tubes (130, 130'), at pre-determined frequencies thereby producing nodes (N) including active nodes (AN) and/or static nodes (SN) at points along the flow tube(s) (130 130'). The, increased sensitivity of the present flowmeter (310) is provided by controllably locating sensors (S) in close proximity to the static nodes (SN) and/or active nodes (AN). In a first embodiment, the flow tubes (130, 130') are oscillated in a manner generating a single active node (AN) with sensors (S) positioned in close proximity to, and on opposing sides of, the active node (AN). In a second …
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 July 6, 1995 and granted March 13, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 6, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 6, 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.