A gas meter provided with improved guide means
CA 2332233 A1 · Owner: Dumay, Michel · Inventors: Champougny, Jean-Luc; Dumay, Michel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a gas meter comprising several measuring chambers (26) with deformable membranes (28), a dispensing element (64) mounted rotating about a so-called axis of rotation over a dispensing surface (42f) wherein are provided several orifices (44, 46, 48, 50) each connected to a measuring chamber, said dispensing element enabling the gas to alternately enter and leave the measuring chambers during the rotating movement means for guiding , said dispensing element in rotation comprising a guiding part (94) whereof at least one portion has a general elongated shape along said axis of rotation and comprising two cylindrical portions (96 98b) distant from each other and , …
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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 May 14, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 14, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2021.
- 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.