Receptacles – Outlet or junction box type – Sectional receptacle
Patent
1986-04-17
1987-12-22
Lowrance, George E.
Receptacles
Outlet or junction box type
Sectional receptacle
220 1B, 220DIG29, B65D 632, B65D 634
Patent
active
047141700
ABSTRACT:
Large storage tank structures having relatively smooth internal surfaces free of any unwelded seams and gaps and particularly free of gaps between meeting parts which may change substantially with differential expansion and other forces thereon are disclosed. This allows the application of suitable corrosion-resisting coating materials to the internal surfaces of the tank which coating will maintain its integrity throughout the expected useful life of the coating and which will be conducive to meaningful inspection and local and/or entire recoating to prolong the life of the tank. The structures disclosed eliminate any gaps between tank members which are not sealed from the inside by continuous welds on the inside of the structure and accordingly, eliminates gaps which will tend to open and close under normal stress variation on the structure to cause a local failure of any corrosion-resisting coating thereon and allow the passage of corrosive materials in the tank for rapid corrosion of the tank structure and the early failure thereof. The structures of the present invention in general also provide continuous welds on each joint of the external structure so as to externally seal the structure from intrusion of water and other corrosive materials from without, thereby providing a large storage tank construction which has a maximum useful life and is readily inspectable and maintainable both internally and externally. Various embodiments are disclosed.
REFERENCES:
patent: 1743459 (1930-07-01), Icjelastad
patent: 1798190 (1931-03-01), Carter
patent: 1965736 (1934-07-01), Dillman
patent: 2012964 (1935-09-01), Hoiton
patent: 2073358 (1937-03-01), Williamson
patent: 2237308 (1941-04-01), Larson
patent: 2395685 (1946-02-01), Schmitz
patent: 2849143 (1958-08-01), Roeske
Lowrance George E.
Trusco Tank Inc.
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