초록 ▼

A fluid storage tank comprising a main body and covers to close off openings of the main body. The main body and covers have inside surfaces which are, in use, in contact with fluid stored in the tank the main body is made up of a casing and a liner which is provided inside the casing. The covers ar

A fluid storage tank comprising a main body and covers to close off openings of the main body. The main body and covers have inside surfaces which are, in use, in contact with fluid stored in the tank the main body is made up of a casing and a liner which is provided inside the casing. The covers are releasable retained in place and seal with the inside surface of the main body so that fluid can be stored in the tank.

대표청구항 ▼

[ We claim:] [1.] A water heater tank comprising:a cylindrical shell, closed at each of its two ends by a releasable and removable curved end wall concentric with and sealingly engaged within said cylindrical shell wall thereby to enclose an interior volume in which to store hot water; a cylindrical

[ We claim:] [1.] A water heater tank comprising:a cylindrical shell, closed at each of its two ends by a releasable and removable curved end wall concentric with and sealingly engaged within said cylindrical shell wall thereby to enclose an interior volume in which to store hot water; a cylindrical liner, separable from said shell, extending at least substantially between said two ends of said shell and conforming therethrough with the inside surface of said shell; an end wall support member adapted to restrain each said end wall against movement induced by a force acting upon it as a result of above-atmospheric pressure in said tank interior volume, said end wall support member including both a central portion and a flange portion, said end wall support member central portion being concentric with both said end wall and said cylindrical shell, said end wall support member central portion conforming at least substantially with a surface of a central portion of said end wall facing away from said tank interior volume, while said flange portion extends from the periphery of said end wall support member central portion in a direction both away from said end wall at the other end and parallel to and conforming with said cylindrical shell wall; retention means to retain each said end wall support member in juxtaposition with a respective one of said ends of said cylindrical shell, said retention means being cooperative between said flange portion of said end wall support member and a portion of said cylindrical shell wall to which it conforms:wherein each said end wall includes (a) a curved end wall center at least substantially conforming with said central portion of a respective cooperative one of said end wall supporting members and (b) a flange, coterminous with the periphery of said end wall center and extending in a direction toward the end wall at the other end of said cylindrical shell wall, said end wall flange having a diameter to fit closely within said cylindrical shell wall and adjacently conforming liner and having sufficient flexibility in a radial outward direction to increasingly compress, in response to increasing internal pressure in said tank, a circumferentially extending seal means cooperative between said end wall flange and said adjacent liner means supported by said cylindrical shell wall.