Method and apparatus for accommodating power disturbances
CA 1289227 C · Owner: Hastings, Steven D. · Inventors: Hastings, Steven D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An irrigation system (10) including a microcomputer (12) and a delay apparatus (16). A preferred delay apparatus (16) includes a power detection circuit (20) capable of detecting short-term disturbances in the power being supplied to the microcomputer (12). Delay apparatus (16) also preferably includes a timer circuit (22) which when, power detection circuit (20) detects a short-term disturbance, acts with a switch (24) to interrupt the AC power to the microcomputer (12) for a preselected period of time. The timer circuit (22) can produce a delay of approximately five or six seconds which is suitable for causing microcomputer (12) to restart or reboot, rather than lock-up or otherwise …
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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
- Granted September 17, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 17, 2008.
- 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.