Micro moveable alarm
CA 2255190 C · Owner: Devine, James Brian Paul · Inventors: Devine, James Brian Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides an alarm for detecting the unauthorized movement of an object said alarm comprising a motion detection means and an audible alarm means. The motion detection means comprises a series of radially extending electrical contacts together with a peripheral electrical contact ring that encircles the perimeter of the outside edges of the radially extending electrical contacts. A metallic ball is provided within the electrical contact ring and is of sufficient size that it can roll freely within the interior of the ring. When the object to which the motion detection means is attached is stationary the ball will tend to come to rest in a position against the contact …
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 2, 1998 and granted July 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 2, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 2, 2020.
- 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.