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Expired Canadian patentCanada

Apparatus for coating workpieces electrostatically

CA 1303345 C · Owner: Luderer, Fred · Inventors: Behr, Hans; Vetter, Kurt; Luderer, Fred

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

In an apparatus suitable for using water-enamel or some, other similar conductive coating material the particles, of paint are sprayed from the grounded spraying edge of a bell-atomizer (2) and are charged in the corona-discharge area of the outer electrodes (10) which are inserted into a holding-arrangement (11, 12, 15) made of an insulating material. By potential-control means in the form of suitably selected materials for the holding-arrangement and/or the atomizer-housing (4), the radial-potential pattern between the atomizer-housing (4, 6) and the outer electrodes (10) can be approximated to the radial-potential distribution of the material sprayed. According to another aspect of the …

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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 June 16, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 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.
FiledMarch 22, 1988
GrantedJune 16, 1992
Term endedJune 16, 2009
Patent numberCA 1303345 C
Classification (IPC)B05B5/04 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMarch 22, 1988Patent grantedJune 16, 1992Term endedJune 16, 2009

Sources & verification

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