Patent ID: 7798298
Filing Date: 2010-09-21
Classification: A43B,F16F

Abstract:
1. A device comprising: a first body portion; a second body portion, wherein the first body portion and the second body portion, at least in part, define a base orientation of the device and wherein an open space is defined between the first body portion and the second body portion; a first spring member pivotally engaged with respect to at least one of the first body portion or the second body portion; a second spring member pivotally engaged with respect to at least one of the first body portion and the second body portion; a first base member; and a second base member, wherein the first body portion and the second body portion are semicircular, semi-oval, or semi-elliptical shaped and each of the first body portion and the second body portion extend between the first base member and the second base member, wherein when the force is applied so as to change the device out of the base orientation, the second spring member exerts a force that urges the device toward the base orientation, wherein when a force is applied to at least one of the first body portion or the second body portion so as to change the device out of the base orientation, the first spring member exerts a force that urges the device toward the base orientation, wherein the first spring member is pivotally or hingedly engaged with the first body portion via a first shaft and a second shaft, wherein the second spring member is pivotally or hingedly engaged with the second body portion via a third shaft and a fourth shaft, wherein the ends of the first and second shafts include slide wheels that engage one or more tracks in the first base member and the ends of the third and fourth shafts include slide wheels that engage one or more tracks in the second base member.