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Expired Canadian patentCanada

Hot melt sizing applying

CA 1209862 A · Owner: Burlington Industries, Inc. · Inventors: Conklin, Delano M.; Illman, Walter F.; Hodgin, John B.

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

An apparatus and method effect application of molten size to textile yarns, such as spun yarns. An applicator cylinder is rotatable about a horizontal axis and has a number of grooves circumferentially formed in its surface, with peaked lands between the grooves, each land making an angle of about 8-12° with respect to a plane bridging the top of an associated groove. A furnisher roll also, rotatable about a horizontal axis picks up molten, size from an open-top trouqh and delivers it to grooves in the rotating applicator cylinder. The surface of the furnisher roll cooperates with that of the applicator cylinder so that sloping areas of the furnisher roll mate with the lands 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 August 19, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 19, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 13, 1983
GrantedAugust 19, 1986
Term endedAugust 19, 2003
Patent numberCA 1209862 A
Classification (IPC)B05C1/08 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedSep 13, 1983Patent grantedAug 19, 1986Term endedAug 19, 2003

Sources & verification

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