Excavation boring and shoring tool
OwnerTed R. Dimitroffinventor
Life of this patent
Estimating the term…
Abstract
A reaming tool forms a hole in the ground with a sidewall and a floor, and a deepened channel around the perimeter of the floor adjacent to sidewall. Fluid is provided during excavation to form a slurry to hold the sidewall and prevent cave-in of material into the hole. After the hole reaches a desired depth, the reaming tool is removed, and a shoring wall is inserted into the hole through the slurry and seated in the perimeter edge channel. The shoring wall includes vertical tubes for connection to a dewatering machine. Then, the slurry can be vacuumed from the hole, while the dewatering machine keeps the empty hole as dry as possible. Extending the shoring wall into the channel beyond the floor of the hole helps seal flow of water from entering the hole.
Claims20
A reaming tool for excavating a hole in the ground, comprising:
- a circular drill head having a first set of cutting tips adapted to break up the ground as the drill head rotates and thereby form a floor in the hole;
- the circular drill head having a second set of cutting tips extending around a perimeter edge of the drill head and extending downwardly further than the first set of cutting tips to form a deepened perimeter channel of the hole;
- the first and second cutting tips being operatively connected to one another so as to rotate in unison;
- and
- a shaft connected to the drill head and extending upwardly for connection to a power source to rotatably drive the drill head to rotate the first and second cutting tips so as to simultaneously form the hole and the perimeter channel around the floor.
A reaming tool for drilling a hole in soil, comprising;
- a ring with cross bars rigidly connected to the ring;
- a first set of cutting tips on the cross bars;
- a second set of cutting tips on the ring;
- the second set of cutting tips extending downwardly beyond the first set of cutting tips;
- a drive shaft extending centrally upwardly from the cross bars to rotate the first and second sets of cutting tips in unison;
- and
- the rings being free of obstructions between the cross bars.
A reaming tool for forming a hole in the ground, comprising:
- a drilling head having an outer circular ring and interior cross bars fixed to the ring;
- a first set of cutters on the cross bars for forming a floor of the hole;
- a second set of cutters on the ring;
- the second sets of cutters extending deeper into the ground than the first set of cutters so as to form a deepened perimeter channel around the floor;
- a drive shaft connected to the drilling head to rotate the drilling head and to force the drilling head downwardly whereby the first set of cutters drill the hole in the ground while the second set of cutters form the perimeter channel;
- and
- fluid nozzles on the drilling head to supply fluid to the first and second cutters during drilling.
Dependencies are inferred from the claim text.