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Expired Canadian patentCanada

Tension measuring device and method for flexible linear material

CA 1231854 A · Owner: Ppg Industries Ohio, Inc. · Inventors: Grundy, Reed H.

CIPO record

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Abstract From the Canadian patent

The tension of flexible linear material such as cables strands, and the like can be measured with improved accuracy with the tension measuring device and method of the present invention. The measurement is effected by a tension measuring device having an engaging means a bending, means, at least one displacement means at least two sensing means, and one, or more indicating means. The engaging means contacts the flexible linear material and in conjunction with the bending means provides a fixed angle of bending to the linear material. The one or more displacement means are associated with the engaging means and are displaced in response to the fixed bending angle of the linear material. The …

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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 January 26, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 26, 2005.
  • 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 27, 1985
GrantedJanuary 26, 1988
Term endedJanuary 26, 2005
Patent numberCA 1231854 A
Classification (IPC)G01L1/00

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedMay 27, 1985Patent grantedJan 26, 1988Term endedJan 26, 2005

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