US PATENT SUBCLASS 52 / 637
.~ Superimposed three-dimensional units

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

633  DF  OPENWORK; E.G., TRUSS, TRELLIS, GRILLE, SCREEN, FRAME, OR REBAR CHAIR {12}
637.~ Superimposed three-dimensional units {1}
638  DF  .~.~> Diagonal and horizontal bracing extend from juncture of sections

DEFINITION

Classification: 52/637

(under subclass 633) Structure wherein the openwork structure includes discrete three-dimensional sections, each formed of intersecting elongated members, which are joined in vertically aligned and stacked relationship.

SEE OR SEARCH THIS CLASS, SUBCLASS:

632, for a shaft or openwork permanently connected for axial extension.

662, for openwork panels stacked face-to-face.

SEE OR SEARCH CLASS

182, Fire Escape, Ladder, or Scaffold,

178.1+, for a platform type scaffold comprising stacked sections. 211, Supports: Racks,

186+, and 189+ for a rack of stacked shelf or rack sections.