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Expired Canadian patentCanada

Device for a multifeed circular knitting machine

CA 1053018 A · Owner: Elitex, Koncern Textilniho Strojirenstvi · Inventors: Novacek, Jindrich; Chladek, Otokar; Brada, Pavel

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

A pneumatic unit for a multifeed circular knitting machine for pneumatically and mechanically controlling yarn guides. It is made up of at least one yarn guide mounted for rocking motion between an operative and an inoperative position and a pair of alternately controlled resilient pistons each acting on one end of the yarn guide for controlling it into the aforesaid positions. The guide is formed with a recess and one of the pistons has a pawl at one of its ends engageable in this recess to hold the guide into the inoperative position. A first spring acts against the other end of this piston to bias it into the recess. A second spring is provided to bias the guide into operation position …

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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 April 24, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 24, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedApril 24, 1979
Term endedApril 24, 1996
Patent numberCA 1053018 A
Classification (IPC)D04B27/00 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedApril 24, 1979Term endedApril 24, 1996

Sources & verification

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