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Expired Canadian patentCanada

Mobile elevator conveyor

CA 1256045 A · Owner: Minenco Pty. Limited · Inventors: James, Gary L.; Ozolins, Imants

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 mobile elevator conveyor comprising a main, support structure (10) mounted on tracks (11) for mobility, along an upper level (14) when in use an elevating conveyor, (13) supported on a boom (12) adapted to be extended from a retracted position within the main frame to an extended position outwardly of said main frame. The boom supporting the conveyor is formed from a plurality of boom segments (22) and is adapted, during extension and retraction to pass over, an outwardly and downwardly curving guide frame (29) mounted on said main support structure. The boom segments are hingedly connected at their lower edges such that the boom structure bends downwardly along its bottom chord at 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 June 20, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 20, 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.
FiledMay 21, 1986
GrantedJune 20, 1989
Term endedJune 20, 2006
Patent numberCA 1256045 A
Classification (IPC)B65G15/26 +2 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedMay 21, 1986Patent grantedJune 20, 1989Term endedJune 20, 2006

Sources & verification

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