Torsion Springs

As load is applied to a torsion spring, the springs diameter will decrease, reducing the outside and inside diameters. The spring will also grow in length. Garage doors are often hooked up to a torsion spring. There are two main types of garage door springs, the torsion spring and the extension spring. Torsion springs are designed and wound to be activated rotationally, and to provide an angular force. Large coiled torsion springs are used to counter balance the weight of garage doors. A torsion spring is often made from a wire, ribbon, bar, or coil.