. . "For example, the at least one extendible member 18 may be extended or retracted by twisting a moveable ring disposed at a bottom portion of the inner housing 12 or the outer sleeve 14 that may be connected via springs, links or other mechanisms to the at least one extendible member 18 such that when the a moveable ring is twisted, the at least one extendible member 18 extends." . . .