US PATENT SUBCLASS 52 / 648.1
.~ Three-dimensional space-defining

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}
648.1.~ Three-dimensional space-defining {9}
649.1  DF  .~.~> Reinforcement for settable material {2}
650.1  DF  .~.~> Beam (e.g., girder, joist, etc.) {1}
650.3  DF  .~.~> Openwork deck, walkway, ceiling, etc.
651.01  DF  .~.~> Vertically oriented (e.g., tower, etc.) {4}
651.11  DF  .~.~> Having perimeter-surrounding element
652.1  DF  .~.~> Triangular lattice
653.1  DF  .~.~> Framework {1}
654.1  DF  .~.~> Parallel trellises or sheets held by disparate connector
655.1  DF  .~.~> Having specific connector, etc. {1}

DEFINITION

Classification: 52/648.1

Three-dimensional space-defining:

(under subclass 633) Structure so constructed that planes intersecting at a terminal corner of, and defined by, all outer longitudinal edges of the structure define an enclosed space.

SEE OR SEARCH THIS CLASS, SUBCLASS:

90.1+, for an inclined rafter on supporting substructure.

111+, for a mast with powered motive means.

632, for an axially extensible shaft or openwork.

637+, for longitudinally superimposed three-dimensional units.

643, for a construction of structurally related or curved or peaked trusses.

662, for a stack of plural facially contacting openwork fabrics or lattices.

SEE OR SEARCH CLASS

182, Fire Escape, Ladder, or Scaffold, appropriate subclasses, particularly

194+, for a stair without a riser and subclasses 128, 141+, and 222+ for a tower with a workmen's platform.

211, Supports: Racks,

180, 181.1, and 182 for a rack of screens, wire, pipes, or bars.