Pulse width modulation drive and method for ornaments with movable components
CA 2550898 C · Owner: Dang, Phu · Inventors: Dang, Phu; Lien, Tim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A decoration device may include a low-friction drive line and a PWM controlled motor that reduces or eliminates the gearing needed to achieve appropriate speed and torque at the motor output shaft. In preferred embodiments the decoration device is an ornament that includes a low friction interfaces to accommodate relatively low torque output from the PWM drive motor. In certain embodiments the PWM controller drives a motor at low speeds suitable for ornament applications.
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 June 27, 2006 and granted March 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 27, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.