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Expired Canadian patentCanada

Winder with horizontal rider roll adjustment

CA 1105914 A · Owner: Beloit Corporation · Inventors: Crouse, Jere W.; Dahl, Carl B.

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 mechanism for winding a roll from a continuous traveling web including first and second parallel winder drums supporting the wound roll and one or more rider rolls on top of the roll being wound with the rider roll circumferential location being changed during the winding of the roll to compensate for the changing spring constant of the roll being wound, and in one form applying a force with a second rider roll and in another form with a third rider roll with the rolls being changed in position relative to the roll being wound independent of each other. - 1 -

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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 July 28, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 28, 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.
FiledDecember 3, 1980
GrantedJuly 28, 1981
Term endedJuly 28, 1998
Patent numberCA 1105914 A
Classification (IPC)B65H54/00 +1 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Application filedDec 3, 1980Patent grantedJuly 28, 1981Term endedJuly 28, 1998

Sources & verification

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