US PATENT SUBCLASS 405 / 243
.~.~.~.~ Withdrawing form structure

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

229  DF  FOUNDATION {2}
231  DF  .~ Columnar structure (e.g., pier, pile) {7}
232  DF  .~.~ Process or apparatus for installing {5}
233  DF  .~.~.~ Casting in situ hardenable fluent material {7}
243.~.~.~.~ Withdrawing form structure

DEFINITION

Classification: 405/243

Withdrawing form structure:

(under subclass 233) Method or apparatus in which the fluent material is placed in a form, and after the form is substantially filled, the form is withdrawn from the member, said withdrawal occurring before or after the setting or congealing of the member.

SEE OR SEARCH CLASS

166, Wells,

287, for a process of cementing a well including a step of removing the molding or forming means.