The Lee Spring extension type of constant force spring represents the most basic, yet most versatile, type of constant force spring. It is a pre-stressed flat strip of spring material which is formed ...

If you are designing a product that requires any sort of smart-motion precision, spring parts that apply constant force or constant resistance are key mechanical design elements to consider. Two of ...

Ex-stock constant force springs from Lee Spring offer a flat force curve over most of its extension range. It is this major “table-top mountain” shape of force curve which ensures their value for ...