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 device electronically tracks the use of a key to open or close a lockset and retain information of the key to allow a user to query the device and receive information with respect to the last recorded status. The device includes an actuating arrangement to allow tracking of the acceleration of the key during a locking or unlocking motion. These tracked signals are evaluated relative to at least two known signals indicative of a locking movement or an unlocking movement. The user is able to query the device at a later point in time and receive timing information of the present status and timing information between changes in status.

Abstract: A pick-resistant lock system includes a locking means. The locking means includes a displacement sensor for sensing displacement so as to generate a displacement signal, the displacement sensor comprising a micro electromechanical gyroscope, a second counterpart, a second alarm, and a second control unit for receiving the displacement signal so as to start the alarm. A key includes a control switch, a second counterpart corresponding to the second counterpart, a second alarm, and a second control unit for receiving the displacement signal transmitted from the locking means so as to start the second alarm.

Abstract: A security device comprises a cable whose ends are engageable within a plunger. The cable is threaded around a door handle or other item to be secured and then, with the cable ends engaged therein, the plunger is slid within a housing for retention by a locking slide. Retraction of the plunger into the housing moves a slide upwardly. This movement causes a pivotally mounted striker to be flipped from one end position to another by an over-centre spring arrangement. In moving, the striker strikes a number of wheels each carrying a sequence of numbers. The wheels are rotated and a random number is displayed. If, subsequently, the plunger is released to release the cable, the wheels are struck again by the striker whereby the displayed number is changed. The number is changed again if the plunger is repositioned. The chance of the same number being randomly generated is insignificant. Thus, any opening and closing of the security device is immediately apparent because of the change in the number displayed.

Abstract: A security device comprises a cable whose ends are engageable within a plunger. The cable is threaded around a door handle or other item to be secured and then, with the cable ends engaged therein, the plunger is slid within a housing for retention by a locking slide. Retraction of the plunger into the housing moves a slide upwardly. This movement causes a pivotally mounted striker to be flipped from one end position to another by an over-center spring arrangement. In moving, the striker strikes a number of wheels each carrying a sequence of numbers. The wheels are rotated and a random number is displayed. If, subsequently, the plunger is released to release the cable, the wheels are struck again by the striker whereby the displayed number is changed. The number is changed again if the plunger is repositioned. The chance of the same number being randomly generated is insignificant. Thus, any opening and closing of the security device is immediately apparent because of the change in the number displayed.

Abstract: A monitoring device for narrow stile, metal frame doors having a mounting plate securable to the door jamb adjacent the strike slot. A switch is mounted on a bracket extending from the face plate and the switch is connectable to an existing alarm system. A trigger normally engages the switch actuator pin. When the closure or door is closed and the dead bolt engaged in the strike slot, the trigger will disengage the pin allowing the alarm system to be armed.

Abstract: A security lock assembly for mounting on a door to cooperate with at least one slot associated with either door frame side comprising a mountable and adjustable unit structural assembly including a pivotable handle, reversible locking bar structure alignable and cooperable with either door frame side associated slot, a counter register, and mechanical linkage structure connecting the pivotal handle with the locking structure and with the counter register.

Abstract: A lock is described which is adapted for use in combination with a conventional latching handle assembly mounted on the bottom panel of a roll-up door mounted on a truck or the like. The lock includes a laterally movable dead bolt which, when locked, is in the pivotal path of the latching handle assembly thereby preventing the latching handle assembly from being moved to its unlocked position. A counter is also associated with the lock which visually indicates the number of times that the lock has been actuated.

Abstract: A portable depository container 10 for an automated teller machine (ATM) articles as, for example, magnetic credit cards captured by the ATM. With the container dismounted from the ATM, an entry slot 16 is locked against passage of articles therethrough by means of a bar 22. Upon the container being mounted in a receiving cradle 18 of the ATM, the bar 22 is moved to an unlocked position by means of key pins 168, 170 which engage and move rearwardly with a pair of slide members 42, 44. This movement of the member 42 brings about a rotational movement of a resettable indicator wheel 76 which carries a series of markings on its perimeter. The particular marking of the wheel 76 visible through an indicator window provides an indication of the number of times the bar 22 has been unlocked since resetting of the wheel, and can thereby indicate whether tampering with the container has taken place. A second embodiment for handling articles such as currency in envelopes utilizes a resettable indicator slide 208.

Abstract: A tally lock has an enclosure frame adapted to be mounted on a door. A lock cylinder is disposed on the frame and carries a lock plug rotatable within the cylinder. At one end of the plug is a flange accessible through an opening in the frame and having a keyway therein into which extends a tab on a driver disc mounted for rotation in a ring on the frame. The driver disc has a flat and acts as a cam against a plate pivoted on the frame and connected by a pivoted link to a counter also mounted on the frame and disposed to display through another opening in the frame.

Abstract: An emergency exit lock of vertical rod type has an active case which contains a latch bolt retracting mechanism operable at all times by a panic-bar. A key-controlled cassette mechanism releasably retained in the active case cooperates with the latch bolt retracting mechanism to provide an additional lock operating function. The cassette mechanism may be assembled to provide a latch holdback function, to lock or disable and unlock or enable a manually operated outside operating member, or to unlock or enable an outside operating member normally maintained in locked or disabled condition when the key is removed.