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Expired Canadian patentCanada

Apparatus for producing long tailed neps

CA 1319244 C · Owner: Mcfarlane, Ian D. · Inventors: Walls, Richard J.; Watson, Julian M.; Mcfarlane, Ian D.

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

The apparatus includes a housing supporting a main rotor, the periphery of which has a plurality of teeth and beaters which cooperate with teeth on a set of feed rollers mounted in the housing alongside the periphery of the main rotor. The housing has an intake chute and a closeable discharge door, the arrangement being such that, in use, a synthetic or fibrous material fed to the intake chute while the, discharge door is closed, is fed into the housing by the feed rollers. The fibrous material is removed by the beaters and teeth of the rotor from the feed rollers. The fibrous material is spun in the housing and the interaction between the teeth and the beaters of the main rotor and 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 22, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 22, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 11, 1989
GrantedJune 22, 1993
Term endedJune 22, 2010
Patent numberCA 1319244 C
Classification (IPC)D01G3/00 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedAug 11, 1989Patent grantedJune 22, 1993Term endedJune 22, 2010

Sources & verification

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