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Expired Canadian patentCanada

Power adapter for electrical installations and especially domesticinstallations with so-called carrier current control

CA 1303673 C · Owner: Manufacture D'Appareillage Electrique De Cahors · Inventors: Tougne, Daniel; Feron, Paul

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The power adapter (114) has a power input (17, 18) and a power output (117) connected to a plurality of power consumption points (3 4, 6, 7, 8, 9, 11) and a load-shedding device so designed that when, the consumed power exceeds a predetermined threshold value, the supply of current to at least a predetermined number (7, 8, 11) of power consumption points is interrupted in cascade in a pre-established order until the threshold value is complied with, whereupon the supply of current to these points is then restored in the reverse order. The load-shedding device includes a transmitting circuit for delivering at the power output (117) control signals to which receiving devices (115) are …

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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 June 16, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 19, 1987
GrantedJune 16, 1992
Term endedJune 16, 2009
Patent numberCA 1303673 C
Classification (IPC)H02J3/14

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJune 19, 1987Patent grantedJune 16, 1992Term endedJune 16, 2009

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.