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Expired Canadian patentCanada

Circular silver knitting machine having increased carding capacity

CA 2102924 C · Owner: Hanna, Joseph C. · Inventors: Hanna, Joseph C.

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

There is disclosed an improved circular sliver knitting machine having increased carding capacity for increasing the amount of sliver which can be carded and fed into the knitting machine. A mounting ring is fixed on an upper bed plate fixed to the sliver knitting machine frame. A plurality of sliver feed assemblies are supported on a sliver feed mounting plate secured to the upper bed plate. The sliver feed assemblies interconnect to a ring gear mounted in surrounding spaced relation to the mounting ring. The sliver feed assemblies card and feed sliver yarn to the knitting needles as the ring gear is turned. A bearing assembly for allowing rotation of the ring gear relative to the mounting …

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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

  • Filed May 11, 1992 and granted November 24, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 11, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 11, 2014.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 11, 1992
GrantedNovember 24, 1998
Term endedMay 11, 2012
Patent numberCA 2102924 C
Classification (IPC)D04B9/14 +1 more

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedMay 11, 1992Patent grantedNov 24, 1998Term endedMay 11, 2012

Sources & verification

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