Power supply
CA 1204819 A · Owner: Scharfe, James A. Jr. · Inventors: Scharfe, James A. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The problem addressed by this invention is that most electronic and other electrical equipment is designed to operate at a particular voltage level which is either AC or DC. If the wrong voltage level or type of current is used, damage may result. This invention solves this problem and, is distinguishable from other inventions by sensing the, voltage level, and preferably also whether the current is AC or DC. Electrical loads are connected in parallel when the voltage is sensed to be in the desired range. Such loads are connected in series where the input voltage is not in the desired range to produce the appropriate output voltage. Preferably the output voltage is converted from one of AC …
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
- Granted May 20, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 20, 2003.
- 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.