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Canadian application, no grantCanada

Overhung roll assembly

CA 2278990 A1 · Owner: Shen, Xiaolan · Inventors: Shen, Xiaolan

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 rolling mill assembly includes a support shaft having a tapered section leading from, an abutment to an end section. A ring-shaped roll having inboard and outboard flanks and a, cylindrical bore is axially mounted on the shaft with its inboard flank seated against the, abutment and with its cylindrical bore surrounding the tapered shaft section. A tapered sleeve, is interposed between the tapered shaft section of and the cylindrical roll bore. A circular, retainer is axially received on and rotatably fixed with respect to the end section of the shaft. A nut is threaded onto the end section of the shaft to operate via the retainer to center the roll, on the shaft by tightly …

Read the whole patent

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 July 23, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 23, 2019.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 23, 2021.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 23, 1999
GrantedNo grant recorded
Term endedJuly 23, 2019
Patent numberCA 2278990 A1
Classification (IPC)B21B31/00 +1 more

Timeline

Timeline From CIPO dates

2000200220042006200820102012201420162018Application filedJuly 23, 1999Term endedJuly 23, 2019

Sources & verification

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