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Expired Canadian patentCanada

Blocking valve for refrigeration or air conditioning systems

CA 1313768 C · Owner: Empresa Brasileira De Compressores S/A - Embraco · Inventors: Berwanger, Egidio; Schwarz, Marcos Guilherme

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

Invention Patent "BLOCKING VALVE FOR REFRIGERATION OR AIR CONDITIONING SYSTEMS", of the type which includes: a hermetic compressor driven by an electric motor; one condenser; one evaporator; one capillary tube between the condenser and the evaporator; and one blocking valve between the condenser and the capillary tube. The blocking valve has a housing (42) defining an inside chamber with inlet and outlet openings in fluid communication with the condenser (31) and respectively, with the capillary tube (32); one magnetic slide (41) installed in the chamber and which can be displaced between one opening position and one closure position of the valve; electromagnetic elements (46, 47) assembled …

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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 February 23, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 23, 2010.
  • 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 22, 1989
GrantedFebruary 23, 1993
Term endedFebruary 23, 2010
Patent numberCA 1313768 C
Classification (IPC)F25B41/04

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedJune 22, 1989Patent grantedFeb 23, 1993Term endedFeb 23, 2010

Sources & verification

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