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Expired Canadian patentCanada

Shot blasting machinery

CA 1263025 C · Owner: Tilghman Wheelabrator Limited · Inventors: Macmillam, William R.

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 shot blasting machine comprises a blast cabinet having at least one internal abrasive throwing wheel rotatably mounted therein and directly coupled to a driving motor mounted externally on one wall of the blast cabinet. The opposed wall of the blast cabinet has mounted thereon externally of the blast cabinet abrasive delivery means for : the throwing wheel. and is disposed immediately adjacent to the throwing wheel, whereby the blast cabinet also functions as a hood for the throwing wheel. The machine may have a workpiece passage across the width of the blast cabinet; a workpiece passage along the length of the blast cabinet; a rotating the for supporting workpieces, the axis of rotation …

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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 November 21, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 21, 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.
FiledJanuary 17, 1986
GrantedNovember 21, 1989
Term endedNovember 21, 2006
Patent numberCA 1263025 C
Classification (IPC)B24C3/00 +2 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedJan 17, 1986Patent grantedNov 21, 1989Term endedNov 21, 2006

Sources & verification

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