Electrostatic charge measurement
CA 1087247 A · Owner: National Research Development Corporation · Inventors: Haig, Ian G.; Bright, Alfred W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In apparatus for continuously monitoring the electrostatic charge transport rate or the charge density in a stream of insulating material flowing through a pipeline a charge, collection chamber and a volumetric flowmeter are connected into the pipeline. The chamber is electrically isolated from the pipeline and connected to earth through an electrometer. The chamber is constructed to ensure turbulent flow within the chamber, the cross-sectional area being enlarged in relation to the pipeline to produce a substantial reduction in linear flow rate. When calibrated for a particular material such as, a hydrocarbon fuel, a value for charge density is derived from measurements of the flow rate …
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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
- Granted October 7, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 7, 1997.
- 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.