  Designs for magnetic springs of two types have been proposed, and the methods
of calculation of their retracting forces have been developed. Formulas are
obtained for the retracting force in the main section of spring force
characteristics. Experimental data are in good agreement with the results of
theoretical calculations. The force characteristics of the proposed magnetic
spring constructions can be varied for a specific application. The derived
formulas are verified experimentally. Ways to change the force characteristics
of magnetic springs according to specific requirements are demonstrated.
