A tamper proof lock has a bolt with a retracted position and an extended position. A knob has a first position wherein a key operates the bolt and a second position wherein the key does not operate the bolt. A key plate is in opposition to the knob having a key slot. The knob has a locking collar attached to the shaft of the thumb knob. The locking collar has a locking orifice. A thumb knob plate has a locking pin that engages the locking orifice in the second position, wherein the thumb knob is pulled out from the thumb plate. This also stops a key inserted into the key plate from operating the bolt. As a result, bumping, picking, drilling the lock, or using an unauthorized key will be ineffective to open a door with this invention in the second position.

Handle arrangement (100) for arrangement to a door (200) provided with a door latch (240), the handle arrangement comprising a housing (10) having a hollow interior, and handle (20) moveable relative to the housing (10) along a first direction, the handle configured to couple to the door latch (240), wherein a movement of the handle along said first direction moves the door latch to or from the latching position; wherein the handle (20) is moveable relative the housing (10) along a second direction, between a secured position, in which position the handle is locked to the housing, and a released position, in which position the handle is moveable relative the housing about the first direction; a first locking mechanism (60) configured to, in a locking state, lock the handle (20) in the secured position, and in a releasing state, allow the handle to be moved to the released position, a second locking mechanism (80) configured to, in a locking state, prevent movement of the handle along the first direction, and in a releasing state allow movement of the handle along the first direction; and an actuating device (70) configured to actuate the first locking mechanism (60) into a locking state or a releasing state, and to actuate the second locking mechanism (80) into a locking state or a releasing state.

An assembly can include a chassis that includes a chamber and an opening; a cover movable for access to the chamber via the opening; a cover latch; and a cover latch release that includes a push panel operatively coupled via a linkage to a pull panel that includes a finger grip surface, where the linkage rotates the pull panel responsive to rotation of the push panel to expose the finger grip surface, and where further rotation of the pull panel releases the cover latch.

A handle assembly is provided for use on storage compartment doors of a vehicle. The assembly includes inner and outer housings residing on opposite sides of the door. The handle assembly plunger resides on the inside of the door, rather than between the outside and inside door skins. An exterior handle can be grasped from either side for moving the plunger from an extended latched position to a retracted unlatched position for opening the door. An interior egress handle is provided to open the door from inside the compartment, as a safety feature. A key cylinder on the outer housing allows the handle assembly to be locked to preclude accidental or unauthorized opening of the door. The handle assembly allows the door to be opened by electric remote power and to be closed by slam action.

A latch mechanism includes a hook, a displaceable handle, and links connected between the handle and hook for the operation of the latch mechanism. The handle and links cooperate with the hook to hold the latch mechanism in a locked position.

A door security device includes a support bar, a first support member, a second support member, and an engagement portion. The first support member is provided on one end of the support bar and is adapted to abut against a surface of an associated door. The second support member is provided at another end of the support bar and is adapted to abut an associated structural surface. The engagement portion is secured to the support bar and is configured to releasably engage a door part of the associated door or an emergency entry device affixed to the associated door. The engagement portion applies a pulling force on the door part in a direction toward the support bar.

Methods and apparatus for using a look on a door lever handle are disclosed. The lock includes a base configured to mount the lock to a door having a lever handle and a lever handle guard pivotally attached to the base, the lever handle guard being pivotable between a locking position and a non-locking position. The lever handle guard is securable in the non-locking position. The lever handle guard includes first and second guard portions arranged to prevent rotation of the lever handle when the lever handle guard is in the locking position. When the lever handle guard is secured in the non-locking position, the first and second guard portions are arranged to permit rotation of the lever handle without contacting the first and second guard portions.

A latch mechanism includes a hook-handle assembly coupled to a first panel and a clevis coupled to a second panel. The hook-handle assembly engages the clevis to secure the first panel relative to the second panel.

A door security assembly for blockading a door in a lockdown situation includes a blockade device. An element of the blockade device insertable into a gap defined by a door and a crash bar that is engaged to the door. Each of a pair of fasteners engaged to the blockade device is selectively engageable the crash bar, so that the blockade device is reversibly engaged to the crash bar with the element positioned in the gap. The blockade device prevents actuation of the crash bar so that the door cannot be opened. The fasteners are positioned so that two hands are required to simultaneously disengage the fasteners from the crash bar to enable disengagement of the blockade device from the crash bar.

An assembly can include a chassis that includes a chamber and an opening; a cover movable for access to the chamber via the opening; a cover latch; and a cover latch release that includes a push panel operatively coupled via a linkage to a pull panel that includes a finger grip surface, where the linkage rotates the pull panel responsive to rotation of the push panel to expose the finger grip surface, and where further rotation of the pull panel releases the cover latch.