US PATENT SUBCLASS 52 / 639
.~ Curvilinear or peaked truss

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}
639.~ Curvilinear or peaked truss {5}
640  DF  .~.~> With means to vary camber
641  DF  .~.~> Collapsible or demountable
642  DF  .~.~> Laminated
643  DF  .~.~> Structurally related trusses
644  DF  .~.~> Arcuate chord

DEFINITION

Classification: 52/639

(under subclass 633) Structure comprising a truss formed by (1) elongated peripheral members (chords) which meet at a vertex, are connected by a base member and have at least one subsidiary member extending from the base to an adjacent peripheral member or (2) a curved peripheral member terminating at or running generally parallel to an elongated

base member.

SEE OR SEARCH THIS CLASS, SUBCLASS:

82, for a conical or radially ribbed roof.

84, for structures that have an airfoil section.

90.1+, for an inclined cover or rafter with supporting substructures in which the rafter portion is usually a peaked truss.

SEE OR SEARCH CLASS 14, Bridges,

3+, for a bridge truss.