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Expired Canadian patentCanada

Self-loading controlled deflection roll

CA 1319290 C · Owner: Arav, Ronnie A. · Inventors: Arav, Ronnie A.

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

A controlled deflection press roll structure for coacting with an opposed member to form a press nip including a rotatable roll shell and a stationary support shaft extending therethrough with a plurality of first hydraulically supported shoes extending axially along the shell supported on the shaft a, second shoe opposite the nip for applying a nip unloading force third shoes lateral of the nip located at the end of the nip for stabilizing the shell and axially facing pads for the end shoes supporting the shoes on the shaft.

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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.
FiledOctober 19, 1988
GrantedJune 22, 1993
Term endedJune 22, 2010
Patent numberCA 1319290 C
Classification (IPC)D21F3/00 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedOct 19, 1988Patent 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.