Device for measuring the volume of flowing substance and corresponding method
CA 2279342 C · Owner: Tokheim Holding B.V. · Inventors: Bloss, Hans Ulrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for measuring the volume of flowing substances, in particular fuel, by means of a screw spindle volumeter comprising the following steps: detection of the rotatin of a screw spindle by means of a sensor and production of impulses the temporal sequence of which , is representative of the angular speed of the screw spindle; repeated measuring of the time interval between succcessive impulses; depending on the measured time interval, selection of a volume value that is predetermined for the corresponding time interval, whereby the volume value is representative of the volume flowing through the volumeter at the corresponding angular speed , of the …
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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 January 20, 1998 and granted July 2, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 20, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 20, 2020.
- 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.