E - Fixed Constructions – 05 – B
Patent
E - Fixed Constructions
05
B
E05B 27/00 (2006.01) E05B 9/04 (2006.01) E05B 9/08 (2006.01)
Patent
CA 2250444
A removable core cylinder assembly which utilizes a plurality of modular parts to create a key-removable interchangeable core which will fit all existing interchangeable core locks of this kind. The removable core cylinder assembly includes a cylinder shell having an axial bore formed therein, the axial bore having an axial recess formed along an axial length of the axial bore; a cylinder plug rotatably mounted within the cylinder shell and having two stepped portions at the front end, wherein the second stepped portion has a smaller outer diameter and uses the front of the cylinder shell as a bearing surface; a locking tab seated within the axial recess of the cylinder shell, which locks the interchangeable core within the lock housing; a removable face plate which covers the axial recess in the cylinder shell for the locking tab and provides shelter to the head of the cylinder plug and protected from removal from the cylinder shell by two stepped portions of the cylinder plug; and a retainer which holds all the parts together and provides a stop for the key. The provision of the novel locking tab means that the walls of the cylinder shell can be made thicker, and yields a much stronger core. A sidebar can be used by to provide the user with greater security.
Arrow Lock Manufacturing Company
Gowling Lafleur Henderson Llp
LandOfFree
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