Patent Yard Sign in
Expired Canadian patentCanada

Forward feed assembly for continuous forward feed of open tubular fabric under controlled tension

CA 1232623 A · Owner: Schaerer, Jean E. · Inventors: Schaerer, Jean E.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

A forward feed assembly for continuous forward feed of open tubular fabric to a subsequent processing station has an elongated guide mandrel over which the open tubular fabric passes, a first drive on one side of the guide mandrel operable to drivingly engage the fabric and a second, drive on an opposite side of the guide mandrel to drivingly engage the fabric at the same fabric-engaging speed as the first drive.

Read the whole patent

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 February 9, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 9, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 19, 1984
GrantedFebruary 9, 1988
Term endedFebruary 9, 2005
Patent numberCA 1232623 A
Classification (IPC)B65H20/02 +2 more

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedDec 19, 1984Patent grantedFeb 9, 1988Term endedFeb 9, 2005

Sources & verification

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