Device for measuring the volume flow of a fan
CA 1332294 C · Owner: Nyman, Mikko · Inventors: Nyman, Mikko; Laine, Juhani; Paananen, Tapio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A measuring device for measuring a pressure difference (.DELTA.p) and thereby the volume flow (qv) of a fan by carrying out the measuring of the pressure difference (.DELTA.p) in a two-chamber measuring part (2) located in the pressure aperture or its continuation in the fan each chamber, having small-diameter apertures (5) that inner surface (8) of the, measuring-device housing (1) against which or close to which the measuring part (2) is located being the cut-off (10) or extended cut-off (9) of the fan mantle, or a continuation of these. The measuring part (2) is installed inside the housing (1) in such a manner that the direction (F) of the flow to be measured is substantially …
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
- Granted October 11, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 11, 2011.
- 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.