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Expired Canadian patentCanada

Lockable load attachment device

CA 1284973 C · Owner: Latchways Limited · Inventors: Tupper, Alan William

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 load attachment device attaching a person to a safety line to provide a fall-arrest facility comprises, a slipper member for engaging an elongate member for sliding movement therealong, and load sensitive locking means having an unlocked condition permitting free sliding movement of the device and a locked condition in which a grip portion of the locking means engages and grips an elongate member slidably engaged, in use with the, slipper member, the locking means including biassing means to cause the locking means to be brought automatically into its locked condition when an applied loading which, is required to maintain the locking means in its unlocked condition on an inclined, or a …

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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 June 18, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 18, 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.
FiledNovember 6, 1987
GrantedJune 18, 1991
Term endedJune 18, 2008
Patent numberCA 1284973 C
Classification (IPC)A62B35/00 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedNov 6, 1987Patent grantedJune 18, 1991Term endedJune 18, 2008

Sources & verification

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