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Expired Canadian patentCanada

Low energy, low water consumption warewasher

CA 1295212 C · Owner: Noren, Tore H. · Inventors: Noren, Tore H.

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

Docket HMS 005 P2, Abstract of the Disclosure A commercial warewasher is disclosed, in which racks of soiled ware, such as dishes, are consecutively washed through a machine cycle which includes recirculating wash water over the ware followed by a fresh water spray rinse. A portion of the wash water is drained and a second portion is retained in the machine after each rack of dishes is washed, and combined with subsequent fresh rinse water spray to provide a volume of water sufficient for pumped wash recirculation for the next rack without cavitation. When a drain valve is opened water pressure to, the wash arm system is reduced flow through it decreases, and when the pump stops the wash …

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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 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 4, 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.
FiledJanuary 30, 1987
GrantedFebruary 4, 1992
Term endedFebruary 4, 2009
Patent numberCA 1295212 C
Classification (IPC)B08B3/02 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJan 30, 1987Patent grantedFeb 4, 1992Term endedFeb 4, 2009

Sources & verification

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