Patent ID: 6642906
Filing Date: 2003-11-04
Classification: H01Q

Abstract:
A self-righting assembly comprising:a sealed outer container with curved walls forming an internal spherical volume; a sealed inner container with an inner volume and a spherical outside surface with a center of the spherical outside surface located within the inner volume, the inner container located within the internal spherical volume of the outer container with a space between the spherical outside surface of the inner container and the curved walls of the outer container; a liquid within the space between the spherical outside surface of the inner container and the curved walls of the internal spherical volume of the outer container, the liquid having a specific gravity sufficient to suspend the inner container within the internal spherical volume of the outer container; and a weight included in the inner container and offset from the center of the spherical outside surface of the inner container so that the inner container turns within the internal spherical volume of the outer container to rest with the weight located at the lowest point of the internal spherical volume of the outer container.