E - Fixed Constructions – 05 – B
Patent
E - Fixed Constructions
05
B
70/5, 77/7
E05B 67/22 (2006.01) E05B 67/24 (2006.01)
Patent
CA 1283789
ABSTRACT OF THE DISCLOSURE A changeable plug padlock including a padlock casing, a shackle moveable between a lower locking position and a upper release position, the casing having a central substantially cylindrical plug cavity therein located between the sockets shaped to receive and removably house a key lock plug. The lock plug located in the plug cavity has a first key position and is operable by an operator key and control key to rotate to second and third key positions respectively. Locking spheres are positioned when the lock cylinder occupies the first key position to hold the shackle in the lower locking position and release the shackle at the second and third key positions for movement to said upper release position. An interlock plunger and pin are intercoupled with the lock plug normally occupying a first interlock position allowing key plug rotation to and between the key positions and movable when the lock plug occupies the second key position and the shackle is moved to said release postion to assume a second interlock position restraining the lock plug against return movement to the first key position to restrain the key against removal from the plug.
556656
Evans Walter R.
Lainhart Gregory C.
Borden Ladner Gervais Llp
Sargent & Greenleaf Inc.
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