Lock combination decoder
CA 2004611 C · Owner: Wilson, Glenn E. · Inventors: Wilson, Glenn E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Invention: IMPROVED LOCK COMBINATION DECODER Inventor: GLENN E. WILSON, Abstract of the Disclosure Apparatus for determining the opening combination of a safe lock includes a servo motor, a molded dial gripper that fits over the hub of the combination lock dial and a, high resolution rotary encoder, preferably one with a resolution of 1000 PPR. The rotary encoder has a resolution of 0.09 degrees of rotation using quadrature which permits, the dial to be rotated accurately to within 1/10 of a digit. A programmable logic and control circuit can rotate the dial for automatic implementation of a manipulation technique. This permits the safe combination to be found in a rather short period of …
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 December 5, 1989 and granted November 22, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 5, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 5, 2011.
- 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.