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Expired Canadian patentCanada

Device for feeding yarn into a circular knitting machine

CA 1237103 A · Owner: Ugolini, Giuliano · Inventors: Ugolini, Giuliano

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

Yarn feeding device for feeding thread F to needles A of a machine for knitting stockings and similar products operating with a needle cylinder 51 in a continuous one-way motion and with an additional thread guide 98 which cyclically moves beyond the needles in an arc of needles intended to form without applying, tensions to the yarn chains of loops in the heel of the stocking by placing the thread in front of the needles when they are lifted. Several additional sinkers 59 are positioned above the traditional sinkers 55, and a cam 61 operates the additional sinkers 59. The cam 61 is in turn operated by two sector gears 63-65 with an interposed idle pinion 67 and with the intervention of …

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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 May 24, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 24, 2005.
  • 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 27, 1984
GrantedMay 24, 1988
Term endedMay 24, 2005
Patent numberCA 1237103 A
Classification (IPC)A41B11/00

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedJan 27, 1984Patent grantedMay 24, 1988Term endedMay 24, 2005

Sources & verification

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