(under subclass 560) Structure wherein the resilient means comprises an axially twistable elongated element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
596, for a support wherein a spiral spring surrounds an axis.
605, for a plurality of coacting resilient mountings which permit oscillation about a distinct axis and for a single such mounting wherein the sole disclosure is that it is used in conjunction with a similar such bushing for this purpose.
625, for a support mounted solely on an axially torsional spiral element.
SEE OR SEARCH CLASS
16, Miscellaneous Hardware, 308, for torsional spring hinges; and subclasses 75+ for torsional closers.
267, Spring Devices,
57+, for torsion vehicle springs.
297, Chairs and Seats,
333, for a tilting seat biased by a torsion spring to either a tilted or to a nontilted position.
