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Expired Canadian patentCanada

Hot water system with atmospheric gas burner

CA 1320875 C · Owner: Jackson, Barry N. · Inventors: Jackson, Barry N.

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

An improved hot water system using an atmospheric gas burner is provided. The system includes a pressure vessel for storing hot water to provide a ready supply of hot water for an end user. It also includes a heat exchanger comprising a tubular coil in communication with the pressure vessel and a fresh, cold water source. Water flows from the pressure vessel or the fresh water source to the heat exchanger and, after heating flows, back into the bottom of the vessel. An atmospheric gas burner mounted proximate the pressure vessel extends into the bottom of the central opening of the heat exchanger coil to heat the water as it passes through the heat exchanger. Finally, the hot water system …

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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 3, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 3, 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.
FiledJanuary 7, 1988
GrantedAugust 3, 1993
Term endedAugust 3, 2010
Patent numberCA 1320875 C
Classification (IPC)F22B7/00

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJan 7, 1988Patent grantedAug 3, 1993Term endedAug 3, 2010

Sources & verification

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