Abstract: A padlock includes a housing, a shackle, a limit knob, a movable block and a lock core. The housing has an opening in a wall thereof. The shackle has a shaft portion movably mounted in the housing, and a locking portion extended from the shaft portion and located outside of the housing. The limit knob is partly received in the housing via the opening and has a button located outside of the housing. The movable block is disposed on the limit knob and capable of moving to a predetermined position which is outside of the housing. The lock core has a rotor configured to be driven by a key so as to move the limit knob to a first position where the button of the limit knob keeps the shackle from rotating and a second position where the button of the limit knob allows the shackle to rotate.

Abstract: A reusable electronic seal for a trailer includes a structural enclosure configured to attach onto a shackle of a padlock with an electronic module integrated within the to enclosure. A rechargeable battery circuit with a photovoltaic cell is in communication with a battery permitting the battery to be charged by the photovoltaic cell when the voltage is low. The electronic module incorporates a microprocessor, a random number generator and a liquid crystal display which communicates with the random number generator. A shackle engagement switch is configured to engage the padlock shackle, applying a signal to the microprocessor when the padlock has been opened. When the padlock is re-latched the shackle engagement switch triggers the microprocessor to signal the random number generator to transmit a new number to the liquid crystal display.

Abstract: A lock assembly includes a housing, a shackle having a pivotal portion, which is disposed in the housing and axially moveable and pivotable, and a free end insertable into a top hole of the housing, and a latch movably disposed in the housing and engagable with the pivotal portion or the free end of the shackle. A key controlled lock unit is disposed in the housing and has a plug rotatable between an unlocked position where the latch can be disengaged from the shackle by a first arm, and a counter can be started by a second arm, and a locked position where the latch is engaged with the shackle.

Abstract: A lock includes a casing, an indicator movably received in the casing between a first position and a second position and a core received in the casing and so configured in such a way that a private key and a general key are able to activate the core. The movement of the indicator from the first position to the second position is in response to a status where the general key is applied to activate the core.

Abstract: A security seal has a housing and a hasp moveable relative to the housing in a first direction between a locked position and a unlocked position. The hasp, in the locked position, is lockable to the housing by a disposable seal. The housing has an opening to allow the insertion of the disposable seal in a second direction different from the first direction. The hasp includes a first locking element engageable, in the locked position, with a second, matching locking element of the disposable seal to prevent movement of the hasp in the first direction toward the unlocked position and withdrawal of the disposable seal in the second direction. The hasp is attached to the housing so as to be both slidable and pivotable relative to the housing.

Abstract: A padlock for luggage that can be operated by setting a combination or by inserting and turning a key is provided with an indicator that normally displays a first state when the lock being used in a normal way as a combination operated padlock, but which displays a second state if the padlock has been opened by utilizing a key.

Abstract: A padlock for luggage that can be operated by setting a combination or by inserting and turning a key is provided with an indicator that normally displays a first state when the lock being used in a normal way as a combination operated padlock, but which displays a second state if the padlock has been opened by utilizing a key.

Abstract: A padlock includes a housing, a shackle, a number lock mechanism, a key lock mechanism, a movable block, and an identification member. Thus, the identification member is exposed outward from the window of the limit knob after the padlock has been unlocked by an inspector of the customs for checking the luggage so as to remind a user to inspect if contents of the luggage that has been opened and checked are missed or lost.

Abstract: A padlock for luggage that can be operated by setting a combination or by inserting and turning a key is provided with an indicator that normally displays a first state when the lock being used in a normal way as a combination operated padlock, but which displays a second state if the padlock has been opened by utilizing a key.