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Expired Canadian patentCanada

Heat exchange fins having improved heater element cutouts

CA 1192181 A · Owner: Brazeway, Inc. · Inventors: Carr, Charles R.

CIPO record

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

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Abstract From the Canadian patent

Abstract, An evaporative cooling unit for a refrigeration system includes a plurality of spaced heat exchanging fins provided with snap action cutouts therein for holding an elongate heating element employed for periodically defrosting the unit. The fins are further provided with a plurality of openings therein for receiving successive turns of a coiled tube adapted to carry refrigerant fluid through the unit. The cutouts extend from the periphery of the fins inwardly to a location between adjacent rows of the coil turns and comprise a notched portion configured to receive the heating element therein and a tapered, slot portion for guiding the heating element into the notched portion during …

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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 20, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 20, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 30, 1983
GrantedAugust 20, 1985
Term endedAugust 20, 2002
Patent numberCA 1192181 A
Classification (IPC)F28F7/00 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedMarch 30, 1983Patent grantedAug 20, 1985Term endedAug 20, 2002

Sources & verification

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