Oscillating hot wire or hot film flow sensor
CA 2462584 A1 · Owner: Board Of Trustees Of Michigan State University · Inventors: Naguib, Ahmed Mostafa; Li, Yongxiang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention is a flow measurement device that has high spatial (less than 1.0 x 1.0 mm2) and temporal resolution (greater than 10s to 100s kHz) to measure flow properties in unsteady and direction-reversing conditions. The present invention can have an oscillating substrate hot wire prongs, a hot , wire attached to the hot wire prong sensor leads from the prongs to a , constant temperature anemometry circuit (CTA) means for the oscillating , substrate to oscillate the substrate at a frequency greater than a characteristic cycle frequency of the flow to be measured at a frequency less , than a CTA bandwidth frequency and such that a frequency and amplitude (Aw) of oscillation are …
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 October 22, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 22, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 22, 2024.
- 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.