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Expired Canadian patentCanada

Hydraulic excavator and compactor bucket therefor

CA 1282740 C · Owner: Felco Industries, Ltd. · Inventors: Caplis, Thomas J.; Zbitnoff, John; Felton, John C.

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

Abstract of the Disclosure, A hydraulic bucket-compactor assembly for a backhoe is disclosed which enables the operator of the backhoe to place and compact material with the backhoe eliminating the need for an extra piece of equipment for compaction. The bucket-compactor is attached to the dipper stick of the backhoe, and is controlled from the cab of the backhoe. A vibrating compactor has its drive unit positioned within the bucket and a leg extending from the drive unit through an opening in the bucket heel wall. A compactor pad is attached to the leg exterior of the bucket.

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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 April 9, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 9, 2008.
  • 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 19, 1987
GrantedApril 9, 1991
Term endedApril 9, 2008
Patent numberCA 1282740 C
Classification (IPC)E02F3/36 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedMay 19, 1987Patent grantedApril 9, 1991Term endedApril 9, 2008

Sources & verification

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