US PATENT SUBCLASS 52 / 320
.~ Block-type filler between sustainers

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

319  DF  CAST IN SITU CONCRETE BARRIER WITH LATERALLY PROJECTING RIB-TYPE SUSTAINER {8}
320.~ Block-type filler between sustainers {5}
321  DF  .~.~> Transverse retainer-engaging sustainers
322  DF  .~.~> Preformed, settable material sustainer
323  DF  .~.~> Filler of cooperating, void-forming sections
324  DF  .~.~> With means underlying sustainer
325  DF  .~.~> Hollow, nonrectangular filler

DEFINITION

Classification: 52/320

(under subclass 319) Structure including a rigid self-sustaining filler member between spaced sustainers, which member has a depth which is substantial relative to its length and height, the member being used in side-by-side relationship with others, one coplanar face formed by the members being covered by the cast in situ barrier material, e.g., a ribbed concrete floor with hollow tile fillers.