| 摘要 |
A pick resistant lock having a housing and a rotatable spindle therewithin, each having a registrable aperture. Interposed between the housing and spindle is a ring that is rotatable relative to said housing a limited distance and has an aperture registrable with said housing and spindle apertures. A tumbler is disposed in said registrable apertures and is biased to a normal position in which said spindle and ring must move together. When the spindle is torqued to pick the lock, the spindle and ring will rotate said limited distance to permit the apertures therein, and the tumbler, to move out of register with said housing aperture and thus prevent the unlocking of the lock. The tumbler is further provided with a chamfered end so that it cannot be felt when the tumbler moves into said housing aperture.
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