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Expired Canadian patentCanada

Plating barrel door apparatus

CA 1298237 C · Owner: Carmon, Lawrence J. Jr. · Inventors: Carmon, Lawrence J. Jr.

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 rotatable container assembly for use in surface treatment of particulate workpieces includes a container having opposed head ends and a side member defining a work cavity therein. An aperture is formed in a minor portion of the side member and a door arranged for opening and closing relation with the aperture. Means for imparting generally arcuate movement and generally radial movement advances and retracts the door between open and closed positions. Preferably the movement imparting means includes a cam slot and cam follower arranged between a driven gear and a closely adjacent end plate. Push blocks assist in selective rotation of the container both relative to and with the door. Plural …

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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 31, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 2009.
  • 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 22, 1987
GrantedMarch 31, 1992
Term endedMarch 31, 2009
Patent numberCA 1298237 C
Classification (IPC)C25D17/20 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJune 22, 1987Patent grantedMarch 31, 1992Term endedMarch 31, 2009

Sources & verification

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