Ferrous object locator and classifier
CA 1267192 C · Owner: Mcfee, John E. · Inventors: Mcfee, John E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A ferrous object detector and locator includes a magnetometer sensor and a position sensor controlled by a microprocessor. The device accurately locates and identifies an unknown ferrous object and determines the depth and orientation of a buried ferrous rod. Simultaneous magnetic field measurements from the magnetometer and position information in one or more orthogonal directions from the position sensor are combined and analyzed by the microprocessor using predetermined algorithms to determine the location and identity of the object. The detector is capable of detecting location and identity of objects of general shape and size.
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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 March 27, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 27, 2007.
- 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.