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Expired Canadian patentCanada

Combination log debarker-chipper

CA 1321528 C · Owner: Sprague, Larry A. · Inventors: Sprague, Larry A.; Peterson, Arnold N.

CIPO record

Overview

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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 combination log debarking log chipping unit having a, debarking apparatus and a chipping apparatus mounted on a common chassis, the two apparatus are aligned for conveying logs from the debarking apparatus to the chipping apparatus. The two apparatus are separated by a space of about 6-10 feet to permit loose bark to be removed from the logs and thereby avoid bark contamination of the chip. A conveyor system between the two apparatus guides and conveys logs to the chipper. A single power source enables control over the feeding of the logs to synchronize log feeding with the chipper's chipping capability. A loader over the debarking apparatus provides convenient loading of the logs into …

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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 August 24, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 24, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 27, 1989
GrantedAugust 24, 1993
Term endedAugust 24, 2010
Patent numberCA 1321528 C
Classification (IPC)B27L7/00 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedSep 27, 1989Patent grantedAug 24, 1993Term endedAug 24, 2010

Sources & verification

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