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Expired Canadian patentCanada

Cooling system with supplemental thermal storage

CA 2016690 C · Owner: Baltimore Aircoil Company, Inc. · Inventors: Osborne, William T.

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

A cooling system with supplemental thermal storage. The cooling system comprises a compressor, an evaporative condenser, a thermal storage unit and, an evaporator. During normal outdoor temperatures when building cooling is desired, the compressor output is connected to the evaporative condenser which in turn is connected to the evaporator coil. During periods of time when the building is not occupied, the evaporator coil is removed from the cooling circuit and the working fluid passing through coils in the thermal storage unit acts to freeze liquid surrounding the coils within the thermal storage unit tank. During unusually warm outdoor temperatures, when additional building cooling is …

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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

  • Filed May 14, 1990 and granted March 8, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 14, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 14, 1990
GrantedMarch 8, 1994
Term endedMay 14, 2010
Patent numberCA 2016690 C
Classification (IPC)F25B1/00 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedMay 14, 1990Patent grantedMarch 8, 1994Term endedMay 14, 2010

Sources & verification

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