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Expired Canadian patentCanada

Method and plant for purifying the exhaust air from a tenterframe or a singer

CA 1305656 C · Owner: Natter, Arthur · Inventors: Natter, Arthur

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

The exhaust air from the tenterframe (1) conveyed by a fan (7) is fed as combustion air to the burner (13) of a steam boiler (21). The burner (13) is operated with a variable and high excess of air of .lambda. = 1,5 to .lambda.= 3,5. The boiler output is regulated by the fuel supply. The excess of air is increased at low boiler load. The boiler exhaust gas is cooled down below the dew point via three heat exchangers (29,30,31). Thus complete combustion of the organic noxious substances in the tenterframe exhaust air and at the same time recovery, which can be readily utilized of the tenter-, frame waste heat and a lowering of the fuel requirement of the steam boiler are achieved. The same …

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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 July 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 28, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 30, 1988
GrantedJuly 28, 1992
Term endedJuly 28, 2009
Patent numberCA 1305656 C
Classification (IPC)F22B33/00 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedNov 30, 1988Patent grantedJuly 28, 1992Term endedJuly 28, 2009

Sources & verification

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