Pipes and tubular conduits – Plural duct – Surrounding radially spaced duct with axially spaced...
Patent
1985-01-30
1986-10-28
Bryant, III, James E.
Pipes and tubular conduits
Plural duct
Surrounding radially spaced duct with axially spaced...
138111, 138148, 138128, 138171, 138151, 138178, 60320, F16L 918
Patent
active
046192921
ABSTRACT:
An air gap pipe and a method for forming the same are provided. The air gap pipe includes a non-linear outer pipe and an inner pipe of identical configuration disposed concentrically within the outer pipe. The inner pipe is supported by resilient dimples in the outer pipe. The outer pipe is placed in a condition for receiving the inner pipe by longitudinally cutting the outer pipe in half with a pre-programmed plasma arc or laser cutting apparatus. The two halves of the outer pipe are secured together to provide vents, if necessary, for selective dissipation of heat.
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APX Group Inc.
Bryant III James E.
Casella Anthony J.
Hespos Gerald E.
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