Patent ID: 7837241

Claim:
A lock, comprising: a case; a first security hook pivotally mounted to the case to extend from and to retract within the case, the first security hook comprising a first sliding face; a second security hook pivotally mounted to the case to extend from and to retract within the case, the second security hook comprising a second sliding face; a spring-loaded mishandling pin comprising third and fourth sliding faces, wherein: the third and the fourth sliding faces engage the first and the second sliding faces, respectively, to prevent the first and the second security hooks from extending from the case when the mishandling pin is in an extended position and the first and the second security hooks are retracted; and the third and the fourth sliding faces disengage the first and the second sliding faces, respectively, to allow the first and the second security hooks to extend from the case when the mishandling pin is in a retracted position; a first drive rail slidably mounted in the case, the first drive rail comprising: a first rack gear on a first distal side of the first drive rail; and a second rack gear on a second distal side of the first drive rail; a second drive rail slidably mounted in the case, the second drive rail comprising: a third rack gear on a third distal side of the second drive rail, the third rack gear facing the first rack gear; a fourth rack gear on a fourth distal side of the second drive rail, the fourth rack gear facing the second rack gear; and a fifth rack gear on a top portion of the second drive rail; a first pinion gear pivotally mounted to the case, the first pinion gear engaging the first and the third rack gears to translate the first and the second drive rails in opposite directions; a second pinion gear pivotally mounted to the case, the second pinion gear engaging the second and the fourth rack gears to translate the first and the second drive rails in the opposite directions; and a third pinion gear pivotally mounted to the case, the third pinion gear engaging the fifth rack gear to translate the second drive rail in one of two directions, thereby causing the first drive rail to translate in an opposite direction.