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Expired Canadian patentCanada

Paddle retard feeder

CA 1214500 A · Owner: Xerox Corporation · Inventors: Hamlin, Thomas J.

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 friction retard feeder adapted to feed sheets from a stack into a paper path located in a horizontal plane includes a tray which holds a stack of sheets at an angle of between 15° and 20° with respect to the paper path. A paddle wheel having a plurality of blades is positioned a predetermined distance in front of sheets stacked in the tray so that as the paddle wheel is rotated the blades in a first position strike the top sheet in the stack in a plane parallel to the top of the stack and separates it from the remaining sheets in the stack. Continued rotation of the paddle wheel causes the blades to deflect downward in front of the stack and thereby inhibit movement of sheets other than …

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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 25, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 25, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 15, 1983
GrantedNovember 25, 1986
Term endedNovember 25, 2003
Patent numberCA 1214500 A
Classification (IPC)G03G15/00 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedNov 15, 1983Patent grantedNov 25, 1986Term endedNov 25, 2003

Sources & verification

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