Mass-volume flowmeter
CA 1324005 C · Owner: Lew, Hyok S. · Inventors: Lew, Hyok S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A flowmeter measuring mass flow rate or volume flow rate or mass and volume flow rates of fluid comprises a pair of flow passages (3 and 4) and a pair of flow sensors (7 and 8) respectively measuring flow rates through the two flow passages (3and 4). A flow obstructing member (12) at least partially obstructs at least one of the two flow passages (3 and 4), wherein a bias force acting on the flow obstructing member (12) tends to increase the degree of obstruction of the fluid flow through said at least one of the two flow passages while, the fluid dynamic force exerted on the flow obstructing member (12) by the fluid moving through the flowmeter tends to decrease …
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 November 9, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 9, 2010.
- 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.