High speed load transfer system
CA 1267717 C · Owner: Hase, Alfred M. · Inventors: Hase, Alfred M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A high speed load transfer system for use with critical loads, e.g. computers, includes a high speed transfer logic circuit which has rapid sensing and rapid contactor energizing means; so that in the event of power failure, power to the critical load can be switched instantaneously to an alternative power supply. A solid state sensor responsive to a step change, detects instantaneous power failure and operates an output to a contactor. A voltage doubler circuit using an AC input capacitor and a DC output capacitor is provided at the contactor, with the DC capacitor connected across the contactor; so that when a transfer signal is received at the contactor, the DC capacitor is discharged …
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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 April 10, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2007.
- 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.