Material testing machine with dual test space and integral axisymmetric triaxial measurement system
CA 2429522 A1 · Owner: Crockford, William · Inventors: Crockford, William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a material testing device. The device includes a load frame and pressure vessel (16) which comprises a dual test space having an open section (22) and a pressure vessel cavity (24). The pressure vessel cavity (24) accepts an axisymmetric triaxial module (18) which can be configured with or without instrumentation means (60) and with or without a mounted membrane (52). In the preferred embodiment an actuator (40) , is mounted below the open section of the load frame and a reaction rod (42) is mounted so that it extends below the top of the pressure vessel cavity. In triaxial (pressurized) testing, the specimen under test (36) is positioned by lifting …
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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 November 15, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 15, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 15, 2023.
- 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.