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Expired Canadian patentCanada

Traction device for line handling equipment

CA 1280321 C · Owner: Fowler, George A. · Inventors: Fowler, George A.; Hamilton, James M.; Whiteway, William 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

George A. Fowler, James M. Hamilton William J. Whiteway, ABSTRACT, A traction device using grooveless traction rollers. An angled roller mounting arrangement allows a number of line wraps to traverse back and forth across the rollers, following the spooling on the storage reel without the aid of a fairlead system for deployment. The device provides for automatic separation of successive line wraps on the rollers to eliminate snagging of connectors or accessories attached to the line.

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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 February 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 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.
FiledSeptember 14, 1987
GrantedFebruary 19, 1991
Term endedFebruary 19, 2008
Patent numberCA 1280321 C
Classification (IPC)B65H51/26 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedSep 14, 1987Patent grantedFeb 19, 1991Term endedFeb 19, 2008

Sources & verification

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