Figure 3 
Constant-Torque Motors are capable of a long deflection and maintain uniform torque throughout their entire operating range. Conventional power springs have a shorter operating range and provide optimum torque only during a portion of total available deflection.

Typical applications include the following: drive motor, counterbalancing, retrieving and returning, and multiple-motor applications. Some specific applications are shown in Figures 4a,b,c,d.