Alarm system for sensing and vocally warning of an unauthorized approach towards a protected object
CA 2067099 C · Owner: Nykerk, Michael · Inventors: Nykerk, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An alarm system (55) detects an unauthorized approach towards a protected object, such as an automobile and provides a verbal warning to the person approaching or contacting the object that he or she must move away from the object or an alarm will be triggered. The alarm system includes a transceiver unit (131) that includes a proximity sensor (59, fig. 5) to sense when a person is within a selectable range (61) of the unit (l31). An indicator circuit (fig. 6) within the transceiver unit (131) shows that the proximity sensor is armed. A control module (57) includes a microprocessor (60) for monitoring the proximity sensor (59). Vocal signals are generated using synthetic speech …
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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 October 10, 1990 and granted September 21, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 10, 2012.
- 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.