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Expired Canadian patentCanada

Lockset assembly

CA 1237157 A · Owner: Emhart Industries, Inc. · Inventors: Hart, Leroy

CIPO record

Overview

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

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Abstract From the Canadian patent

A lockset for a door comprises a latch bolt assembly including a bolt movable between a partially extended latching position, a fully extended dead bolt position, and a retracted position. A spindle extends through the latch assembly in a direction transverse of the direction of movement of the bolt. Means connect the spindle to the bolt for moving the bolt between its positions upon rotation of the spindle. An operating assembly comprises a hand operator having locking means therein, a first plate mounted for linear movement in a direction transverse to the axis of the spindle. An actuating member is connected to the hand operator for moving the first plate. A second plate has linear …

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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 24, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 24, 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.
FiledSeptember 28, 1984
GrantedMay 24, 1988
Term endedMay 24, 2005
Patent numberCA 1237157 A
Classification (IPC)E05B15/00 +2 more

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedSep 28, 1984Patent grantedMay 24, 1988Term endedMay 24, 2005

Sources & verification

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