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Expired Canadian patentCanada

Variable v-belt

CA 1189357 A · Owner: Mitsuboshi Belting Ltd. · Inventors: Komai, Takahiko; Matsumura, Kaname

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 V-belt construction (10) utilizing one or more layers (19) of transverse cord fabrics in the compression section (17) thereof. The fabric cord layers are embedded in cushion rubber provided with short transverse reinforcing fibers and are laid down in a serpentine manner so as to follow the valleys and peaks of the cog portions (16) of the belt, with the layers being spaced apart in the peak portions (22) of the cogs and closely juxtaposed in the valley portions (21) thereof.

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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 25, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 25, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 16, 1982
GrantedJune 25, 1985
Term endedJune 25, 2002
Patent numberCA 1189357 A
Classification (IPC)F16G5/00 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedMarch 16, 1982Patent grantedJune 25, 1985Term endedJune 25, 2002

Sources & verification

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