US PATENT SUBCLASS 405 / 231
.~ Columnar structure (e.g., pier, pile)

Current as of: June, 1999
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405 /   HD   HYDRAULIC AND EARTH ENGINEERING

229  DF  FOUNDATION {2}
231.~ Columnar structure (e.g., pier, pile) {7}
232  DF  .~.~> Process or apparatus for installing {5}
250  DF  .~.~> Comprising series of connected longitudinal sections having diverse compositions
251  DF  .~.~> With joint or connection between sections of similar material {1}
252.1  DF  .~.~> Pile having screw threads
253  DF  .~.~> With driving or cutting tip {1}
255  DF  .~.~> With end cap
256  DF  .~.~> Concrete {1}

DEFINITION

Classification: 405/231

Columnar structure (e.g., pier, pile):

(under subclass 229) Method or apparatus wherein the stable base comprises a rigid member having a limited closed periphery and which is greatly elongated relative to any lateral dimension.

(1) Note. This subclass includes bridge approaches with retaining wall type abutments (usually a reinforced wall).

SEE OR SEARCH THIS CLASS, SUBCLASS:

195.1+, for a marine pile or a method of repairing the same.

216, for a marine pile with a protective sleeve or coating.

274+, for sheet piles.

SEE OR SEARCH CLASS

14, Bridges, 75, and 77.3 for piers specifically adapted to support bridge spans.

52, Static Structures (e.g., Buildings),

720.1+, for shafts in general (e.g., utility pole).