Cylinder lock mechanisms
CA 1054390 A · Owner: Jonathan Lock Limited · Inventors: Fry, Eric
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a cylinder lock mechanism of the type in which longitudinally movable pin tumblers are housed in a normally freely rotatable lock plug which is coupled to a locking member by means of a rocking lever responding to correct alignment of the tumblers, the resistance of the lock to picking, and to fouling and corrosion may be improved and the structure made more compact, by making the lever part of a three part linkage, the lever being pivotless and actuated by the tumblers by a laterally movable diaphragm in the lock plug and acting upon a laterally movable clutch dog to couple the locking member to the plug. A decombinating cam is provided to ensure disengagement of the diaphragm from the …
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 May 15, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 15, 1996.
- 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.