Method and apparatus for measuring the permeability of a material
CA 1165141 A · Owner: Aro Corporation (The) · Inventors: Clifford, Earl W.; Sorce, Peter S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for measuring the permeability of a material to passage of a fluid includes a pressure regulator for varying the pressure of a supplied fluid, a pair of jaws which may be clamped onto the material specimen a, solenoid valve arranged between the regulator and the jaws and a collapsible, container arranged to be inflated with such fluid as may pass through the clamped specimen during the test. The permeability of the test specimen is determined in terms of the length of time needed for a known volume of such fluid to pass through the specimen, when fluid at a test pressure is applied to a unit area thereof. The apparatus may further include a pressure switch arranged to sense an …
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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 April 10, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2001.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.