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Expired Canadian patentCanada

Contact charging by means of a rotary disk atomizer

CA 1280280 C · Owner: Groener, Hans · Inventors: Maurer, Bodo; Groener, Hans

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

Method for applying a liquid in the form of electrically charged drops via a spraying system from a storage tank, the storage tank and all elements for conveying the liquid being uncharged. In this method the liquid is conveyed in the form of droplets or as an intermittent jet over a distance of from 3 to 30 through the air onto a rotating disk; a high voltage of from 10 to 150 is applied to the rotating disk, and the liquid is charged on the rotating disk and is thrown off. The rotary disk atomizer is provided with a housing so that electrical forces are prevented from affecting people or adjacent parts of the equipment. And an apparatus to carry out this method.

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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 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 2008.
  • 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 3, 1986
GrantedFebruary 19, 1991
Term endedFebruary 19, 2008
Patent numberCA 1280280 C
Classification (IPC)B05B5/04

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedMarch 3, 1986Patent grantedFeb 19, 1991Term endedFeb 19, 2008

Sources & verification

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