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Expired Canadian patentCanada

Shell and tube heat exchanger

CA 1264735 C · Owner: Sulzberger, Kevin · Inventors: Sulzberger, Kevin

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

An improved heat exchanger of the shell-and-tube type. The exchanger includes end assemblies for venting fluid from the safety gaps of a plurality of multi-walled vented tubes. A telescoping arrangement of fluid flow tubes and inner sleeves associated with the end assemblies provides reliable sealing thereof. Baffling arrangements within the end assemblies and within a heat transfer chamber create an advantageous multi-pass contraflow between the heat exchange fluids.

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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 January 23, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 23, 2007.
  • 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 28, 1984
GrantedJanuary 23, 1990
Term endedJanuary 23, 2007
Patent numberCA 1264735 C
Classification (IPC)F28D7/10 +2 more

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedMarch 28, 1984Patent grantedJan 23, 1990Term endedJan 23, 2007

Sources & verification

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