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Expired Canadian patentCanada

Wear resistant insert for a fabric contacting element of a paper making machine

CA 1115105 A · Owner: Jwi Ltd. · Inventors: Pitt, Richard E.

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

The invention relates to an easily removable paper machine blade which consists of an elongated substantially, non-rigid body portion and an elongated substantially non-, rigid nose-piece of a wear resistant material which is held in sliding relationship to the body portion. The nose-piece tially the same extent as the bending capability of the body portion. The nose-piece comprises a plurality of segments made of a wear resistant material. The segments are arranged in end-to-end abutment and held together under tension by a holding means which passes through the segments and to which the segments are attached by a grouting material.

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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 December 29, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 29, 1998.
  • 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 14, 1979
GrantedDecember 29, 1981
Term endedDecember 29, 1998
Patent numberCA 1115105 A
Classification (IPC)D21F1/48

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedAug 14, 1979Patent grantedDec 29, 1981Term endedDec 29, 1998

Sources & verification

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