Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting
Patent
1989-03-06
1990-06-05
Eley, Timothy V.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
264256, 264273, 264516, 264 403, 249 1, 249 10, 249 93, 249149, 29446, 29454, B28B 116
Patent
active
049312359
ABSTRACT:
A method for making a steel/concrete tank is provided. A steel interior tank is pressurized during or after pouring of a concrete outer tank around a steel inner tank. Pressurization is commenced before the concrete has set, and is maintained until substantial setting of the concrete. The resulting structure is less susceptible than previous structures to cracking of the exterior concrete upon pressure-testing of the structure for leaks.
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Bambacigno Ralph
Lindquist Thomas A.
Chin Frances
Convault Inc.
Eley Timothy V.
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