Alternator circuit arrangement useful in liquid level control system
CA 1258510 A · Owner: S.J. Electro Systems, Inc. · Inventors: Johnston, Stephen P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Alternator circuit arrangement (20) for controlling the electrical energization of multiple load devices such as two pump motors (41,42) on an alternating basis so as to maintain the level of a liquid (86) in a container (84) within a predetermined range. The alternator circuit arrangement (20) further including an RC circuit (54) having a capacitor (62) for discharging through a normally closed switch (50b) which is opened during energization of the pump motors (41,42) so as to energize a bi-stable relay (52) which in turn interconnects alternate ones of the pump motors (41,42) to the alternator circuit (20) such that upon detection of the liquid (86) at an intermediate level (96) …
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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 August 15, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 15, 2006.
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Timeline
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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.