Abstract: A security device for reinforcing a structure such as a door against cutting or other forms of attack, comprises a hollow casing with an interior space, and first and second rod assemblies positioned in the interior space under compression. The first rod assembly comprises a first rod and a first spring, and the second rod assembly comprises a second rod and a second spring. The first and second rod assemblies are parallel, and the first and second springs do not overlap. The first and second rods only have point contact with the casing.

Abstract: A security device for reinforcing a structure such as a door against cutting or other forms of attack, comprises a hollow casing with an interior space, and first and second rod assemblies positioned in the interior space under compression. The first rod assembly comprises a first rod and a first spring, and the second rod assembly comprises a second rod and a second spring. The first and second rod assemblies are parallel, and the first and second springs do not overlap. The first and second rods only have point contact with the casing.

Abstract: A locking system for a rolling shutter comprises a housing, a body, and a lock bar. The housing has a longitudinal housing channel. The body has a body channel, and is positioned in and moveable transversely within the housing channel. The lock bar is positioned within the body channel, and is moveable longitudinally to the body and housing between a locked position extending away from the body and an unlocked position retracted toward the body. The movement of the body within the housing channel is coupled to the movement of the lock bar between the locked and unlocked positions.