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Expired Canadian patentCanada

Punch press transfer mechanism

CA 1289457 C · Owner: Farhat, Dennis P. · Inventors: Sofy, Hugh M.; Farhat, Dennis P.

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 workpiece (W) transfer assembly (10) is provided for a progressive die type punch press. The assembly (10) includes a first crank bar (28) driven to oscillate about a first rock shaft (24) by the press ram, and a second crank bar (36) driven to oscillate about a second rock shaft (32) by the press ram. A horizontal linkage (40) extends between the first crank bar (28) and a workpiece engaging jaw (18). A vertical linkage (42) extends between the second crank bar (36) and the horizontal linkage (40). A linear bearing (48) interconnects the vertical linkage (42) and the horizontal linkage (40). A plate (44) having a vertically elongated slot (46) disposed therein is attached to 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 September 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 24, 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.
FiledOctober 3, 1988
GrantedSeptember 24, 1991
Term endedSeptember 24, 2008
Patent numberCA 1289457 C
Classification (IPC)B21D43/05

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedOct 3, 1988Patent grantedSep 24, 1991Term endedSep 24, 2008

Sources & verification

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