Mechanical memory for a movable barrier operator and method
CA 2492480 A1 · Owner: Fitzgibbon, James J. · Inventors: Fitzgibbon, James J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mechanical memory as used with a movable barrier operator serves to provide characterizing codes and/or executable code to the movable barrier operator. In one embodiment the mechanical memory is integrated with an RPM cup (20). The mechanical memory includes physical aspects that interact in a predetermined way with energy such as for example light. This interaction can , include passage reflection, and absorption. Regular placement of at least some of the physical aspects can be used to permit real-time monitoring of at least one operating parameter of the movable barrier operator (such as motor speed or movable barrier position). In addition these and/or additional , physical …
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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 June 17, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 2025.
- 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
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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.