A padlock shroud is described for protecting a padlock. For example, one implementation of a padlock shroud comprises: a shroud body having a chamber with an opening accessible to a padlock body, the opening formed in a lower portion of the shroud body, wherein to engage a padlock with the shroud, the padlock body is inserted into the chamber through the opening, apertures formed through an upper portion of the shroud body and having a spacing substantially equal to a spacing of legs of a shackle to be engaged with the padlock through the apertures, a shackle protector having first and second connection points adjacent to the apertures and extending upward from the upper portion of the shroud body at a length at least substantially equal to a length of the legs of the shackle, and a press pin aperture formed on a side of the shroud body and positioned to allow a press pin to be inserted beneath the padlock body when the padlock body is fully inserted into the chamber.

A padlock shroud is described for protecting a padlock. For example, one implementation of a padlock shroud comprises: a shroud body having a chamber with an opening accessible to a padlock body, the opening formed in a lower portion of the shroud body, wherein to engage a padlock with the shroud, the padlock body is inserted into the chamber through the opening, apertures formed through an upper portion of the shroud body and having a spacing substantially equal to a spacing of legs of a shackle to be engaged with the padlock through the apertures, a shackle protector having first and second connection points adjacent to the apertures and extending upward from the upper portion of the shroud body at a length at least substantially equal to a length of the legs of the shackle, and a press pin aperture formed on a side of the shroud body and positioned to allow a press pin to be inserted beneath the padlock body when the padlock body is fully inserted into the chamber.

A padlock includes a case including a main part and a board which is mounted to the main part. The main part includes a room therein and a block is located in the room. A lock cylinder is located in room and includes a keyhole and shaft. A chamber is formed in block in the room. The board includes an operation space and a shackle is movably located in the operation space. A notch is defined through the board and communicates with the chamber. The shackle includes an engaging hole in which the shaft of the lock cylinder is securely engaged. The staple is inserted into the notch and an end of the shackle pivotably passes through the notch and the chamber, and the staple when operating the lock cylinder. The shackle is hidden in the case and difficult to be accessed from outside of the case.

A theft deterrent device includes a locking portion and a housing portion. The locking portion includes a locking mechanism. The housing portion includes a housing portion wall. The housing portion wall comprises a first material and is configured to house a second material within the housing portion wall. The second material is made of a different material than the first material. The second material is selected such that a cutting tool will be hindered when trying to cut through the housing portion.

A padlock shroud is described for protecting a padlock. For example, one implementation of a padlock shroud comprises: a shroud body having a chamber with an opening accessible to a padlock body, the opening formed in a lower portion of the shroud body, wherein to engage a padlock with the shroud, the padlock body is inserted into the chamber through the opening, apertures formed through an upper portion of the shroud body and having a spacing substantially equal to a spacing of legs of a shackle to be engaged with the padlock through the apertures, a shackle protector having first and second connection points adjacent to the apertures and extending upward from the upper portion of the shroud body at a length at least substantially equal to a length of the legs of the shackle, and a press pin aperture formed on a side of the shroud body and positioned to allow a press pin to be inserted beneath the padlock body when the padlock body is fully inserted into the chamber.

A padlock shroud is described for protecting a padlock. For example, one implementation of a padlock shroud comprises: a shroud body having a chamber with an opening accessible to a padlock body, the opening formed in a lower portion of the shroud body, wherein to engage a padlock with the shroud, the padlock body is inserted into the chamber through the opening, apertures formed through an upper portion of the shroud body and having a spacing substantially equal to a spacing of legs of a shackle to be engaged with the padlock through the apertures, a shackle protector having first and second connection points adjacent to the apertures and extending upward from the upper portion of the shroud body at a length at least substantially equal to a length of the legs of the shackle, and a press pin aperture formed on a side of the shroud body and positioned to allow a press pin to be inserted beneath the padlock body when the padlock body is fully inserted into the chamber.

The lock with key having expanding arm elements is an electromechanical lock mechanism. The lock with key having expanding arm elements comprises a key structure, a lock structure, and a lock control circuit. The lock structure is a fastening device. The lock structure secures the position of a first object relative to a second object. The lock structure is a releasable structure such that the position of the first object relative to the second object can be adjusted after the lock structure is released. The lock control circuit is an electric circuit. The lock control circuit forms an electronic locking mechanism that fastens and releases the locking structure. The key structure is a multi-blade structure that controls the operation of the lock control circuit.

The lock with key having expanding arm elements is an electromechanical lock mechanism. The lock with key having expanding arm elements comprises a key structure, a lock structure, and a lock control circuit. The lock structure is a fastening device. The lock structure secures the position of a first object relative to a second object. The lock structure is a releasable structure such that the position of the first object relative to the second object can be adjusted after the lock structure is released. The lock control circuit is an electric circuit. The lock control circuit forms an electronic locking mechanism that fastens and releases the locking structure. The key structure is a multi-blade structure that controls the operation of the lock control circuit.

A theft deterrent device includes a locking portion and a housing portion. The locking portion includes a locking mechanism. The housing portion includes a housing portion wall. The housing portion wall comprises a first material and is configured to house a second material within the housing portion wall. The second material is made of a different material than the first material. The second material is selected such that a cutting tool will be hindered when trying to cut through the housing portion.

A theft deterrent device includes a locking portion and a housing portion. The locking portion includes a locking mechanism. The housing portion includes a housing portion wall. The housing portion wall comprises a first material and is configured to house a second material within the housing portion wall. The second material is made of a different material than the first material. The second material is selected such that a cutting tool will be hindered when trying to cut through the housing portion.