Mesa Industries, Inc.

Fredrick O Swain

Raymond E Decker

A seal is attached to and curved around a floating roof of a storage tank for petroleum products or other liquid materials, to extend to an outer circumference at the tank wall. The curved seal is suspended at first suspension points on the seal spaced about the floating roof. These first suspension points are spaced from the mentioned outer circumference at the wall by a first distance greater than zero and from the floating roof at a second distance greater than such first distance. The curved seal is suspended at these first suspension points from a series of corresponding second suspension points spaced from the first suspension points by third distances. Each of the second suspension points is spaced from the tank wall by a fourth distance greater than zero and from a peripheral cylindrical reference surface about the floating roof by a fifth distance greater than the mentioned fourth distance. The lengths of the fourth and fifth distances are varied in response to fluctuations of the varying width between the floating roof and the tank wall. The ratio of the fourth width to the fifth width is maintained constant during fluctuations of the latter varying width.

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La Canada-Flintridge, CA, United States of America

Fredrick O Swain