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Expired Canadian patentCanada

Vibratory split roll

CA 1096680 A · Owner: Iowa Manufacturing Company Of Cedar Rapids, Iowa · Inventors: Jones, Harlan M.; Schrimper, Vernon L.; Fairchild, Louis F.

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 steerable split roll for a road roller includes a pair of roll shells containing means by which vibratory force is applied to each. Between adjacent ends of the roll shells a "turntable" type of bearing both connects the roll shells together for rotation relative to each other and maintains them in axial alignment.

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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 March 3, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 3, 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.
FiledMay 10, 1978
GrantedMarch 3, 1981
Term endedMarch 3, 1998
Patent numberCA 1096680 A
Classification (IPC)E01C19/26

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMay 10, 1978Patent grantedMarch 3, 1981Term endedMarch 3, 1998

Sources & verification

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