Abstract: An orthodontic device and methods thereof for correcting an arrangement of teeth are provided. The orthodontic device includes a plurality of brackets for attaching to teeth; a plurality of spring anchoring units, wherein each of the plurality of spring anchoring units is attached to one of the plurality of brackets; and a spring having a tension, two-dimensional longitudinal deformability and two-dimensional rotational deformability, wherein the spring is attached to each spring anchoring unit, wherein the tension is zero prior to attaching the plurality of brackets to the teeth, wherein further the tension is greater than zero immediately after attaching the plurality of brackets to the teeth, wherein further the tension is zero when the plurality of brackets is attached to the teeth and in an optimal position.

Abstract: An orthodontic device and methods thereof for correcting an arrangement of teeth are provided. The orthodontic device includes a plurality of brackets for attaching to teeth; a plurality of spring anchoring units, wherein each of the plurality of spring anchoring units is attached to one of the plurality of brackets; and a spring having a tension, two-dimensional longitudinal deformability and two-dimensional rotational deformability, wherein the spring is attached to each spring anchoring unit, wherein the tension is zero prior to attaching the plurality of brackets to the teeth, wherein further the tension is greater than zero immediately after attaching the plurality of brackets to the teeth, wherein further the tension is zero when the plurality of brackets is attached to the teeth and in an optimal position.

Abstract: A vehicle seat for absorbing energy exerted on the seat during impact including a seat frame having at least one generally vertical segment, a support apparatus including at least one generally vertical pole and at least one coupler fixedly mounted on the at least one pole of the support apparatus and circumferentially mounted on the at least one generally vertical segment of the seat frame, the at least one coupler having at least one deformation member engaging an indentation in the at least one segment such that displacement of the seat frame relative to the support apparatus occurs only when the force of the impact acting on the seat frame exceeds a preselected threshold.