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Expired Canadian patentCanada

Wire guide apparatus for wire stitching machine head

CA 1283751 C · Owner: C Interlake Companies Inc. (The) · Inventors: Kunka, Bernard P.; Hagemann, Casper W.

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 cyclical wire stitching machine head includes d reciprocating staple-forming and driving apparatus which is coupled to a wire gripping and feeding mechanism which reciprocates with it. During each cycle of the machine the supply wire is gripped and a predetermined length thereof is fed through a cutter to a holder and severed while simultaneously, the length severed in the preceding cycle is formed into a staple and driven through the work against a clincher. On the retraction stroke, the holder is rotated to bring the severed length of wire into position for forming and driving during the next drive stroke. A guide tube positively guides and supports the unstraightened wire from a supply …

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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 May 7, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 7, 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.
FiledJune 9, 1987
GrantedMay 7, 1991
Term endedMay 7, 2008
Patent numberCA 1283751 C
Classification (IPC)B27F7/28 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJune 9, 1987Patent grantedMay 7, 1991Term endedMay 7, 2008

Sources & verification

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