Patent ID: 7731052

Claim:
A flexible cover for an exposed horizontal cylindrical pressurized gas tank having hemispherical ends, a upwardly protruding valve cover in a top portion and a support structure for support on an underlying surface, the cover comprising in combination: an exterior cover of gas permeable flexible fabric having, a rectilinear medial body portion with opposing side edge portions, opposing elongate end portions, a medial orifice for passage of the tank valve cover therethrough, and at least one air vent between the medial orifice and each elongate end portion, the side edge portions depending downwardly over the top and sides of the tank spacedly distant from the underlying surface supporting the tank, end portions having upper semicircular portions and lower rectilinear portions interconnected to each elongate end portion, the lower rectilinear portions depending downwardly over the hemispherical ends of the tank spacedly distant from the underlying surface supporting the tank, an open bottom defined by the side edge portions of the body and lower edges of the end portions having a closing means carried by the side edge portions of the body and the bottom edges of the end portions for gathering the lower edges of the cover about the bottom portion of the tank; an insulating inner layer between the exterior cover and the tank having, side edge portions spacedly adjacent the side edge portions of the exterior cover and sector shaped end portions extending into the semicircular portions of the end portions, a medial through orifice communicating with the medial orifice of the exterior cover, elongate through holes communicating with the air vents defined in the exterior cover, and plural spacers for supporting the inner insulating layer spacedly adjacent the tank forming air passage spaces therebetween communicating with the side edge portions and the elongate orifices; and a valve cover cap having a closed top, a circumferentially extending side portion and an open bottom releasably fastenable over and about the tank valve cover.