Pipes and tubular conduits – Combined – With external support structure
Patent
1989-05-26
1992-08-11
Hornsby, Harvey C.
Pipes and tubular conduits
Combined
With external support structure
138106, 138118, 138128, 138172, 138170, 454903, 248 61, 156203, F16L 1104, F16L 1112, F16L 11115
Patent
active
051370573
ABSTRACT:
A flexible duct adapted to be suspended from a support and method of making same. The duct comprises a conduit of heat-sealable plastic film having a longitudinally extending fin on the conduit for suspending the conduit. The fin comprises first and second face-to-face layers of heat sealable film. The fin includes spaced apart reinforced regions which are adapted for engagement with fasteners for suspending the conduit. The reinforced regions comprise portions of the first and second layers which are heat-sealed together. According to the method, a duct is made from an elongate tube of flexible heat sealable material. The sidewall of the tube is joined to itself along a longitudinal line to define a first relatively larger tube forming a longitudinally extending conduit, and a second relatively smaller tube forming a longitudinally extending double-walled fin for suspending the duct. Portions of the double walls of the fin are then heat-sealed together to form longitudinally spaced reinforced regions for engagement by means for suspending the conduit.
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Graham Gary
Hornsby Harvey C.
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