Definition for "Volute spring"

Volute spring - (General)

1. coil spring: a spring in the shape of a coil
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2. A Volute spring is a compression spring in the form of a cone (a Volute), designed so that under compression the coils are not forced against each other, thus permitting more length to be shortened.
Source or sample of word "volute spring"
3. This kind of spring is manufactured by wrapping up metal strips inside each other so to make a pointed shape with almost all metal pieces touching. It is relatively expensive, but is much more stable than coil springs because coils touch.
Source or sample of word "volute spring"
....Source from : Google Definitions