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Expired Canadian patentCanada

Folding belt system and said belt

CA 1250812 A · Owner: The Goodyear Tire & Rubber Company · Inventors: Candle, Richard D.

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A folding belt system having the head (13) and tail (12) pulleys twice the width of the support idler rolls and having a transition length of about 7 to 15 times the width of the belt between the fold or hinge lines, where transition width support rolls are located. The folding conveyor belt is composed of a central belt section which has specially constructed flexible areas at each edge extending longitudinally the length of the belt to which are attached cover flaps (34 or 46). The cover flaps completely enclose the load while it is conveyed. This reduces spillage dust, and contamination while providing highly enhanced conveying capacity. The flaps may be of the same or different …

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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 7, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 7, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 19, 1985
GrantedMarch 7, 1989
Term endedMarch 7, 2006
Patent numberCA 1250812 A
Classification (IPC)B65G15/08

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedJune 19, 1985Patent grantedMarch 7, 1989Term endedMarch 7, 2006

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