The spring encircling rigid annulus in the spring wheel is resiliently supported against radial motion relative to the wheel center by a flexible strap, bank, cable or chain extending about the wheel. The flexible element is not a spring in the ordinary sense of the term.
SEE OR SEARCH THIS CLASS, SUBCLASS:
40, 47 and indented subclasses for rubber springs extending continuously about the wheel.
56+, for pneumatic springs extending continuously about the wheel.
69, for leaf springs extending continuously about the wheel
92, for coil springs extending continuously about the wheel.
