US PATENT SUBCLASS 52 / 2.22
.~ Comprising spaced, sheetlike members and fluid chamber therebetween

Current as of: June, 1999
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52 /   HD   STATIC STRUCTURES (E.G., BUILDINGS)

2.11  DF  SHAPED OR STRENGTHENED BY FLUID PRESSURE {11}
2.22.~ Comprising spaced, sheetlike members and fluid chamber therebetween {1}
2.23  DF  .~.~> Including subdividing elements

DEFINITION

Classification: 52/2.22

Comprising spaced, sheetlike members and fluid chamber therebetween:

(under subclass 2.11) Structure wherein the building structure or component comprises two or more flexible panels which are in a spaced-apart, more or less parallel relationship with one another and which are joined, at least along their perimeters, in a fluid-tight manner.