File drawer interlock mechanism
CA 2099047 C · Owner: Krueger International, Inc. · Inventors: Mcgregor, Dickson J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An interlock mechanism for a multi-drawer file cabinet assembly, for preventing more than one drawer from being opened at a time. The interlock mechanism includes a series of control rods mounted for axial movement within a series of blocks located in the interior of the cabinet. The control rods are arranged in an abutting end-to-end relationship, forming joints therebetween. A pivotable lever is mounted to the blocks adjacent each joint, and an actuator member is mounted to each drawer. Movement of a drawer to its open position causes engagement of the actuator member with one of the levers, to pivot it to a position in which the lever separates adjacent control rods, resulting in upward …
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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
- Filed June 23, 1993 and granted May 12, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 23, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 23, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.