Disclosed is an invention that relates to a breakage prevention type card key. A breakage prevention type card key of the present invention includes: a substrate part installed inside a case part, a key accommodation part connected to the substrate part and having a groove into which an auxiliary key part is inserted, a locking part located inside the key accommodation part and elastically pressurizing a side surface of the auxiliary key part stored in the key accommodation part to restrain the movement of the auxiliary key part, and a reinforcement part extended from key accommodation part and coupled to the case part and augmenting the rigidity of the case part located on both sides of the entrance of the key accommodation part.

The invention relates to locking devices of enhanced security. primarily locks for locking dead bolt systems of safes, metal doors of residential buildings, public and other buildings and offices, as well as to padlocks, etc., where a high level of resistance to breaking is required.

Disclosed is an entry system for a building having: a first door lock that includes a controller; wherein the first door lock is configured for encoding access rights to a first client keycard responsive to a first engagement with a master keycard.

A padlock is configured to be locked and unlocked by a key and includes a lock body having an internal cavity with a locking mechanism and a keyway extending through the lock body into the internal cavity to provide access to the locking mechanism by the key. The locking mechanism is configured to be selectively moved over a range of positions when the key is received therein to lock and unlock the padlock. The keyway has an eccentric profile that permits the key to be removed from the locking mechanism in only a single position of the range of positions.

A padlock with an associated locking mechanism is configured for use in a lock configured to be locked and unlocked by a key. The locking mechanism includes a lock cylinder with a key-receiving end configured to interface with the key and further includes a cam positioned at an axial end of the lock cylinder opposite the key-receiving end thereof. The cam is integrally connected thereto thereby restricting axial and rotational motion of the cam with respect to the lock cylinder and can be used to retain components of the locking mechanism (such as tumblers and springs) in the lock cylinder.

A padlock configured to be locked and unlocked by a key can an internal biasing element that establishes a position of the locking mechanism within an internal cavity of the lock body of the padlock. The locking mechanism can be a linear lock configured to receive the key along an axial direction from the key-receiving axial end of the locking mechanism and internal cavity. The locking mechanism can include at least a lock cylinder (and sometimes other components) and having an axial length that is less than an axial distance between a pair of axial ends of the internal cavity. Notably, the padlock includes a biasing element received in the internal cavity of the lock body that biases the lock cylinder along the axial direction to maintain a key stop distance from a key stop on the lock cylinder to the key-receiving axial end of internal cavity.

Certain exemplary embodiments can provide a system, which can comprise a securement. The securement comprises a rising member and defining at least a first slot. The system can comprise a locking member, the locking member defining an aperture. Wherein, when operatively coupled to the securement, a padlock coupled to the locking member via the aperture prevents removal of the locking member from the securement.

Disclosed is an entry system for a building having: a first door lock that includes a controller; wherein the first door lock is configured for encoding access rights to a first client keycard responsive to a first engagement with a master keycard.

An electronic lock core device includes: a housing, a front end thereof configured with an opening; a transmission mechanism, configured inside the housing and with a motor in connection with a gear train, the gear train in engagement with a transmission shaft, and a front end of the transmission shaft configured with a rod; a locking piece, configured with a pendulum and fixing hole, a fixing member passed through the fixing hole and the opening on the front end of the housing and fixed to the rod; and a control circuit, configured inside the housing and in connection with the motor of the transmission mechanism and an induction device adapted to sensing a signal of a chip card or RFID to drive the transmission mechanism to drive the motor to rotate positively or negatively and further to make the locking piece form a lock or unlock action.

The system of the present invention is comprises of one or more door lock units, a data exchange system, and a clerk user interface. The door lock units are mounted to the cooler doors and prevent the doors from opening to allow access to the alcoholic products without authorization. These door lock units include a mechanical locking mechanism, an identification scanner/reader, and a display. The door lock units receives power from a power supply (with a back up power supply standing ready) and communicates wired or wirelessly with a data server and router combination. The data server and router combination also communicates with a clerk user interface, which may be in the form of a tablet, smart phone, laptop, or other computing device.