Self-storing LPG tank cart

An LPG tank including a shouldered diametrically reduced lower end, a cart for trailing said tank including a rigid cylindrical ring of an inside diameter snugly receiving said diametrically reduced end of said tank therethrough with the shoulder of said tank abutted against said ring, support leg means carried by a first peripheral portion of said ring and projecting generally axially of said ring away from said tank, a pair of support arms supported from second and third peripherally spaced portions of said ring substantially equally and oppositely angularly spaced from said first portion and spaced slightly on the side of a diametric plane of said ring remote from said first portion and disposed normal to a radial plane generally centered relative to said leg means, said arms also projecting generally axially outwardly from said ring away from said tank, the outer free ends of said arms including support wheels journalled therefrom for rotation about generally aligned axes paralleling said diametric plane, said axes being spaced outward of the free end of said diametrically reduced end of said tank, the upper end of said tank including a shoulder defining diametrically reduced protective sleeve of an axial extent greater than the axial extent of said diametrically reduced lower end and over which said ring of said cart is snugly receivable to a position with the shoulder defined by said sleeve abutted by said ring when said cart is inverted, the spacing between said ring and those peripheral portions of said wheels remote from said ring being less than the axial extent of said sleeve, whereby when said cart is positioned on said sleeve with said ring abutted against the shoulder defined by said sleeve, no portions of said cart, including the wheels thereof, project outward beyond the free end of said sleeve.