Transformer probe
CA 2424472 C · Owner: Weston Aerospace · Inventors: Proctor, Kenneth W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A probe for sensing movement of a body of magnetic material comprises a magnetically energisable pole piece a closed , loop electrical circuit having a first end which is wound around the pole piece and forms a pole piece coil inductively coupled to the pole piece, the arrangement being such that movement of a body of magnetic material relative to the pole piece induces a current in the closed loop circuit and a , second end, remote from the pole piece which forms a , transformer primary coil. A transformer secondary coil is inductively coupled to the primary coil and terminated by a , load resistance and means for measuring an output signal from the secondary coil. The primary and …
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
- Filed April 4, 2003 and granted August 21, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 4, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 4, 2025.
- 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.