German online schreibgeraete springs online schreibgeraete models online schreibgeraete prices

online schreibgeraete spring is a special type of extension spring, suitable for applications with large elongation and constant load. Constant-force springs consist of spiral metal strips; the inner side of the strip is curved so that each turn wraps tightly around the previous one. When the metal strip is stretched (twisted), internal stress resists the load, similar to ordinary extension springs, but the spring rate is nearly constant (zero). See the load/torque diagram. In use, ID is typically used to wind this spring tightly onto a drum.