Abstract: Preparing a form of a vehicle body part conforming to a corresponding damaged body part. Usually the form is prepared from a mold and a gasket is applied to an inner edge of the form. Drilling at least one vacuum port and at least one weep hole in the form. Applying a body putty to the damaged area of the body part and covering it with the form while exerting a vacuum to adhere the form to the body part while excess body putty exits from the weep hole. Removing the form after the body putty has hardened and painting the repaired body part.

Abstract: A multiple wall tank for the storage of liquids is manufactured from a rigid, single wall inner tank having at least one aperture by applying an outer sheath over the inner tank, removing a portion of the tank surrounding the aperture, applying a layer of a synthetic resin material to the inner tank exterior surface surrounding the aperture, providing a spacing means to provide for substantially free passage of liquids between a substantial portion of the inner tank and the outer sheath and bonding a portion of the outer sheath to the synthetic resin layer surrounding the aperture to form a substantially liquid impervious seal around the aperture.

Abstract: A double wall tank for the storage of liquids is manufactured from a rigid, inner tank by helically extruding a synthetic resin outer sheath over the sidewall portion inner tank while preventing bonding between the extruded outer sheath and the inner tank, with outer end portions that are sealingly bonded to the outer sheath sidewall portion.

Abstract: A storage tank and method for making it is disclosed in which a first tank portion having a cylindrical sidewall is formed by helically extruding a plurality of partially overlapping layers of synthetic resin on a portion of a cylindrical form, with an end portion being formed and sealingly affixed to the sidewall portion, with the cylindrical form being removed from within the first tank portion, and then any remaining open cylindrical end being closed to form a closed cylindrical tank.

Abstract: A multiple wall tank for the storage of liquids is manufactured from a rigid, single wall inner tank having at least one aperture by applying an outer sheath over the inner tank, removing a portion of the tank surrounding the aperture, applying a layer of a synthetic resin material to the inner tank exterior surface surrounding the aperture, providing a spacing means to provide for substantially free passage of liquids between a substantial portion of the inner tank and the outer sheath and bonding a portion of the outer sheath to the synthetic resin layer surrounding the aperture to form a substantially liquid impervious seal around the aperture.

Abstract: A double wall tank for the storage of liquids is disclosed, comprising a rigid inner tank having an aperture formed through a sidewall of the inner tank, and an outer sheath of synthetic resin material having an opening generally overlying the inner tank aperture and a generally annular flange member attached to the inner tank and extending over a portion of the outer sheath adjacent to and surrounding the outer sheath opening to urge that outer sheath portion toward the inner tank sidewall to form a substantially liquid impervious seal between the outer sheath and the inner tank surrounding and proximal to the inner tank aperture. A generally cylindrical passage member is attached to the inner tank adjacent the aperture and extending through the annular flange member to provide a substantially liquid-tight passage into the inner tank through the aperture and the opening in the outer end of the cylindrical passage member.

Abstract: A multiple wall tank for the storage of liquids is manufactured from a rigid inner tank having at least one aperture by applying a layer of a synthetic resin material to the inner tank exterior surface around the aperture, providing a spacing means to provide for substantially free passage of liquids along at least a portion of the inner tank, applying over the layer of synthetic resin and the inner tank an outer sheath of a thermoplastic synthetic resin material, and bonding the outer sheath to the resin material layer surrounding and proximal to the aperture to form a substantially liquid-impervious seal around the aperture.

Abstract: A multiple wall tank for the storage of liquids is manufactured from a rigid inner tank having at least one aperture by applying a layer of a synthetic resin material to the inner tank exterior surface around the aperture, providing a spacing means to provide for substantially free passage of liquids along at least a portion of the inner tank, applying over the layer of synthetic resin and the inner tank an outer sheath of a thermoplastic synthetic resin material, and bonding the outer sheath to the resin material layer surrounding and proximal to the aperture to form a substantially liquid-impervious seal around the aperture.

Abstract: A double wall tank for the storage of liquids is manufactured from a rigid, inner tank by helically extruding a synthetic resin outer sheath over the inner tank while preventing bonding between the extruded outer sheath and the inner tank.

Abstract: A method is disclosed for manufacturing from a rigid single-wall tank having spindle members attached to and extending outwardly of each of its end portions a rigid double-wall tank for the storage of liquids. The method includes applying to the exterior surface of the inner tank a spacing material, applying over the inner tank and the spacing material an outer sheath with at least a portion of the outer sheath applied adjacent to each spindle member then removing at least one of the spindle members from the end portions of the inner tank and urging the outer sheath overlying the end portions away from the end portions to form a space between the end portion of the inner tank and the outer sheath, inserting into the spacing material and then sealing the end portion of the inner tank by applying a substantially liquid-tight sheath.

Abstract: A lifting lug is disclosed for securing a hoist to a tank, in which that lifting lug is stored within the tank but may be moved to a position extending through an opening in the sidewall of the tank for attachment to a hoist to provide for lifting of the tank, with subsequent removal back to a stored position inside the tank.

Abstract: An apparatus and a member therefor are disclosed for a sump assembly installed in a liquid storage tank having an exterior portion and a tank wall with an aperture extending through a portion of the tank wall, a generally cylindrical sump collar attached within said aperture having an open outer extremity and having an inner extremity closed by a base member attached to that inner extremity, a generally cylindrical sump housing fitting into the sump collar, and means for sealingly attaching the sump housing to the sump collar, so that the sump housing and the sump collar form a liquid containment chamber.

Abstract: A double wall tank for the storage of liquids is manufactured from a rigid single wall inenr tank by forming a mixture of an internal lubricating agent and a curable synthetic resin and applying over the inner tank exerior surface the mixture of the lubricating agent and the curable synthetic resin to form, when cured, a substantially rigid outer sheath that is substantially fluid tight and that resists bonding to the inner tank.

Abstract: A method of making a double wall tank from a single wall inner tank. A mixture of an internal lubricating agent and a curable synthetic resin is formed and applied over an exterior portion of the tank which when cured forms a rigid outer sheath that is fluid tight and resists bonding to the inner tank.

Abstract: A double wall storage tank for liquid and a method for manufacturing that tank are disclosed in which an inner tank is formed of metal panels with at least lower portions of the inner tank being formed from patterned metal having a pattern of projections extending outwardly from a base surface on the exterior such portions of that inner tank, with a sheet of imperforate material stretch over the inner tank to separate the inner tank from subsequently applied sheathing material, and a substantially rigid sheath of resin impregnated fibrous material is applied over that inner tank and sheet.

Abstract: A double wall tank for the storage of liquids is manufactured from a rigid single wall inner tank by applying to at least a portion of the exterior surface of the inner tank a release agent for preventing bonding of a curable synthetic resin to the inner tank exterior surface, applying over the inner tank exterior surface and the release agent a substantially rigid outer sheath of a curable synthetic resin that, when cured, is substantially fluid tight, and breaking engagement between the inner tank exterior surface and outer sheath.

Abstract: A double wall tank for the storage of liquids is manufactured from a rigid single wall inner tank by applying to at least a portion of the exterior surface of the inner tank a hardenable synthetic resin spacer material and forming in the spacer material one or more channels that provide for substantially free passage of liquids through the channels. A substantially imperforate film is stretched across the spacer material and over the one or more channels to separate the inner tank and the spacer material from subsequently applied sheathing material. A substantially rigid outer sheathing material that is substantially liquid-tight is applied over the inner tank exterior and the spacer material and the film overlying the spacer material such that the sheath is spaced from at least a portion of the inner tank exterior surface so as to provide a rigid double wall tank.

Abstract: A double wall tank for the storage of liquids is manufactured from a rigid single wall inner tank by applying to at least a portion of the exterior surface of the inner tank a plurality of spaced apart, generally parallel beads of a hardenable, viscous liquid synthetic resin spacer material to form, between adjacent beads, one or more channels that provide for substantially free passage of liquids through the channels. A substantially imperforate film is stretched across the beads and over the one or more channels to separate the inner tank and the beads from subsequently applied sheathing material. A substantially rigid outer sheathing material that is substantially liquid-tight is applied over the inner tank exterior and the beads and the film overlying the beads such that the sheath is spaced from at least a portion of the inner tank exterior surface so as to provide a rigid double wall tank.

Abstract: A method is described for manufacturing a rigid double wall tank from a rigid single wall cylindrical inner tank, in which a substantially rigid sheath is formed over a male mold which has a configuration generally similar to that of the inner tank and provides for molding of projections on the inner surface of such cylindrical sheath portion. The cylindrical sheath portion is then removed from the mold and introduced over the inner tank with the projections extending from the cylindrical inner surface of the sheath to the outer surface of the inner tank, and sheath end portions are applied to the axial extremities of that cylindrical sheath portion, forming a complete sheath enclosing the inner tank.

Abstract: A double wall tank for the storage of liquids is manufactured from a rigid single wall inner tank by applying to at least a portion of the exterior surface of the inner tank a release agent for preventing bonding of a curable synthetic resin to the inner tank exterior surface, applying over the inner tank exterior surface and the release agent a substantially rigid outer sheath of a curable synthetic resin that, when cured, is substantially fluid tight, and breaking engagement between the inner tank exterior surface and outer sheath.