| 摘要 |
An improved locking apparatus for preventing access to the print die of a postage meter which is protected by a shutter when it is removed from its base include a carriage and slide crack which are reciprocated by a solenoid in a direction transverse to the deadbolt which locks the shutter from moving. The operation of the carriage and slide crank prevent the deadbolt from being reciprocated by force applied to the deadbolt. A groove in the deadbolt interlocks with a slot on the shutter to allow the solenoid to be deactuated. A return spring in the solenoid is sized to prevent acceleration forces from moving the deadbolt.
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