Torque motor
CA 2768047 C · Owner: Moog Inc. · Inventors: Reinicke, Robert H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A torque motor (20) has a base (21), four polepieces (22A 22B, 22C, 22D) extending away from the base the polepieces being separated from one another and being arranged at the corners of an imaginary polygon (27) each polepiece terminating in a pole (23A 23B, 23C, 23D); a coil (24A, 24B, 24C, 24D) surrounding each of the polepieces; an armature (26) pivotally mounted on the base the armature having a portion arranged to move toward and away from an associated one of the poles respectively, to define a variable-reluctance air gap (gA gB, gC, gD) therebetween; a permanent magnet (29) mounted on one of the base and armature and polarized in a direction parallel to the pivotal axis of the …
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 February 4, 2004 and granted August 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 4, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 4, 2026.
- 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.