Abstract: A metal rolling mill having four rolls arranged in the shape of a cross for the purpose of rolling bar, wire, tube and other specially shaped metal rolling stocks. The roll system forms the core component and includes four rolls mounted on shafts placed at 90° with respect to one another. A single or set of double shafts transmit input or torque from a power source to the roll system and cause the roll shafts to rotate synchronously. The four rolls then press from four mutually perpendicular directions simultaneously on the same section of the metal rolling stock that is being fed through the rolls on the production line. The positions of these rolls can be collectively adjusted within their respective radial plane either mechanically via a remotely controlled device or manually.

Abstract: An intracavity modulated pulsed laser comprising an amplification medium, a pulsed pumping source, a beam modulator, and two mirrors, one totally reflective and one partially reflective for generating at least one laser output burst comprising a plurality of sub-pulses having variably controllable peak powers.