Head for the detection of a liquid level by hydrostatic action
CA 1210957 A · Owner: Materiel Et Auxiliaire De Signalisation Et De Controle Pour L'Automation - Auxitrol · Inventors: Khoi, Danny J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The head for the hydrostatic detection of the level comprises a main enclosure divided by a membrane into two chambers, one of which communicates with a supply of air under pressure, while the other is connected to a probe that is immersed deeply in the liquid by an auxiliary enclosure also containing a primary chamber that communicates with the inlet of the gas under pressure, and a secondary chamber separated from the primary chamber by a membrane forming one piece with a valve mounted between the secondary chamber and a small connecting pipe, which prevents any ill-timed rise of the liquid inside the device, in the case of the disappearance of the compressed air supply and which makes, …
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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 September 9, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 9, 2003.
- 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.