A technique for determining a mechanical zero value for a coriolis meter
CA 2111698 C · Owner: Micro Motion, Inc. · Inventors: Bruck, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus and ac-, companying methods for inclusion in a Coriolis me-, ter (5) that substantially eliminate temperature in-, duced measurement errors which might otherwise be, produced by performance differences existing be-, tween the separate input channels contained in the, meter. Specifically two, pairs of input channels (44, 54, 64) are used in the meter. In operation, the meter, repetitively measures the internal phase delay of, each of these pairs and then subtracts the delay associated with each pair from actual flow based measurement data subsequently obtained therefrom. While one channel pair is measuring actual flow the other channel pair is measuring its internal phase delay …
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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 July 2, 1992 and granted June 10, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 2, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 2, 2014.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.