Extensometer
CA 1282259 C · Owner: Her Majesty The Queen In Right Of Canada As Represented By Atomic Energy · Inventors: Van Der Kuur, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
TITLE, Extensometer, INVENTOR, John H. van der Kuur ABSTRACT, A simple extensometer that allows remote sensing under harsh testing conditions, such as elevated temperatures. The apparatus uses two extension arms arranged such that there is no contact between the two linkages connecting the specimen to a strain measuring device thereby avoiding friction, the major source of problems namely high, hysteresis and non-linearity.
Read the whole patent
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 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 2, 2008.
- 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.