Volumetric meter for liquids and/or gases, particularly suitable for service stations
CA 2000936 C · Owner: Nuovopignone - Industrie Meccaniche E Fonderia S.P.A. · Inventors: Bergamini, Giorgio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A volumetric meter for liquids and/or gases in the radial, cavities of the rotor of which there are housed rolling rollers which, by undergoing mutual repulsion by the action of magnets embedded in them, are urged radially into a sealed state against the inner surface of the cylindrical chamber which is provided in, positions straddling said opposite maximum and minimum clearance zones with two portions having constant curvatures with their centre on the rotor axis and extending through an angle equal to the angular pitch between two successive rollers ie to 360°, divided by the number of rollers used. Further inlet and outlet ports cooperating with the rear space in the housing cavities …
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 18, 1989 and granted December 7, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 18, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 18, 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.