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(11) | EP 0 385 808 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Cylinder lock with axially extending plungers |
(57) A cylinder lock e.g. for an equipment cabinet comprises a housing (2) having an inwardly
directed flange (6) at the front of the housing and a collar (4) forming an inwardly
directed flange at the rear of the housing. A spindle assembly (7) comprising a body
(9) having secured thereto a flange member (10) is located within the housing with
the flange member (10) trapped between the housing flange (6) and the housing collar
(4). Spring biased plungers (18) are located within bores in the flange member (10)
and engage in recesses (20) in the flange (6) to lock the spindle assembly (7) to
the housing (2) when no key is present. When the correct key is inserted the plungers
(18) are depressed sufficiently to clear the recesses (20) but not so far as to extend
into bores (21) provided in the collar (4). Torque is then applied to the spindle
assembly by means of the lateral walls of the plunger receiving recesses (31) of the
key and/or a projection (28) formed on the outer surface of the key thereby obviating
the previous requirement for a keyway to be formed in the outer end (27) of the spindle
assembly. |