US PATENT SUBCLASS 52 / 329
.~.~ Arched backer 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}
327  DF  .~ Additional distinct coextensive section fixed to barrier or sustainer {5}
329.~.~ Arched backer between sustainers {1}
330  DF  .~.~.~> With flange web-type reinforcement

DEFINITION

Classification: 52/329

(under subclass 327) Structure including a generally sheet-form curvilinear member which is supported by the rib-type sustainer and against the convex side of which the concrete forming the barrier surface is poured, i.e., the sustainer and arched backer constitute a form.

SEE OR SEARCH THIS CLASS, SUBCLASS:

86+, for structure which as a whole forms a vertical curvilinear arch.

339, for a similar construction involving only a cast barrier.