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(11) | EP 0 428 202 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Sliding cylinder locks |
(57) In a lock of the kind where a cylinder assembly (4) is slidable as a whole to shift
a locking member (14) to its locking position and is retained in that position by
a lateral retainer bolt (16) extending into an associated detention (17), a member
(13) which carries that bolt (16) is formed separately from the cylinder barrel (5)
and plug (6) and is connected to the barrel (5) by screws (25) which will fail when
subject to a predetermined load in the unlocking axial direction of the cylinder assembly
(4) which is less than that which will cause failure of the retainer bolt (16) or
its detention (17). Accordingly, if an attempt is made to attack the lock by forcibly
withdrawing the cylinder assembly (4) from its locking position there will ultimately
be a preferential failure of the connecting screws (25). Even though the cylinder
assembly (4) is withdrawn to what would be the normal unlocking position, therefore,
the retainer bolt (16) and locking member (14) remain secure and unaffected. |