US PATENT SUBCLASS 405 / 242
.~.~.~.~.~ Driven dispenser with separable tip

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}
240  DF  .~.~.~.~ Dispensing fluent material while withdrawing dispenser {2}
242.~.~.~.~.~ Driven dispenser with separable tip

DEFINITION

Classification: 405/242

Driven dispenser with separable tip:

(under subclass 240) Method or apparatus wherein the form or delivery means is initially provided at its lower end with means to facilitate penetration in the earth, which means remains in the cavity as the form or delivery means is withdrawn.