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US 5,394,711 AGranted
Padlock with removable cover
AssigneeAbloy Security Ltd. Oy
InventorJukka Pitkanen
Life of this patent
Estimating the term…
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AssigneeAbloy Security Ltd. Oy
InventorJukka Pitkanen
Estimating the term…
A padlock includes a lock body (1) and a substantially U-shaped shackle (2), a lock mechanism (4) fitted into a cavity (3) in the lock body and to which at least one lock bolt (5) is functionally connected for locking the shackle to the lock body (1), a cover element (6), which is turnably connected to the lock body (1), preferably by means of threads, and which is located in the insertion direction of the key in front of the lock mechanism (4), and a stop member (7), arranged in the lock body transversally with regard to the cover element (6), removable in the open position of the shackle (2) and preventing, in its blocking position, turning of the cover element (6) with regard to the lock body (1), and a locking ring (10) placed in a groove (9) in the lock body (1) surrounding the cover element and arranged to be installed in its position in case the cover element (6) is to be locked permanently to the lock body (1).
A padlock comprising:
A padlock comprising:
A method of modifying a padlock that comprises a lock body formed with a cavity and a first groove, a substantially U-shaped shackle fitted to the lock body and movable between a locking position and an open position, a lock mechanism fitted in the lock cavity, at least one lock bolt functionally connected to the lock mechanism for locking the shackle in its locking position, a cover element turnably connected to the lock body and located in front of the lock mechanism in an insertion direction of a key and formed with a second groove, and a stop member arranged in the lock body in a blocking position in which it engages the cover element and prevents turning of the cover element relative to the lock body, the stop member being disengageble from the cover element when the shackle is in the open position to allow turning of the cover element, said method comprising placing the shackle in its open position, disengaging the stop member from the cover element, removing the cover element from the lock body, and reinstalling the cover element in the lock body with a locking ring fitted partly in the first groove and partly in the second groove for preventing subsequent removal of the cover element.
Dependencies are inferred from the claim text.