Dc motor stall-detection system
CA 2106450 C · Owner: Salazar, Edilberto I. · Inventors: Salazar, Edilberto I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A motor controller is programmed for detecting motor-stall condition of a dc-motor under the control of the motor control system. The motor controller includes a programmable microcontroller in connected to a motor driver. The motor driver communicates with a motor. The motor coupled to a position encoder which encoder is in communication with the microcontroller The method comprises the steps of providing an average stall threshold value and providing the motor controller with a time counter for counting each time interval T to a maximum count of "N". The motor controller is programming to issue a motor command representing the position error between the desired motor position and the …
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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 September 17, 1993 and granted May 27, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 17, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 17, 2015.
- 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.