Cast-in-place piling method and apparatus

Details Cast-in-place piling method and apparatus Cast-in-place piling method and apparatus

1989-12-28

1991-05-07

Taylor, Dennis L.

Hydraulic and earth engineering

Foundation

Columnar structure

175394, 299 87, 405232, E02D 534

Patent

active

050131915

ABSTRACT:
An apparatus for piling a cast-in-place pile includes an earth auger main body and an auger head. The earth auger main body includes a hollow shaft, a spiral screw blade provided about the hollow shaft, a spiral belt provided on an outer circumference of the spiral screw blade and in parallel with an outer circumferential surface of the hollow shaft. The auger head is connected to a lower end of the earth auger main body and includes a holow shaft, one or two spiral screw blades provided about the hollow shaft, one or two spiral belts provided on outer circumferences of the spiral screw blades and in parallel with the outer circumferential surface of the hollow shaft, and excavating bits provided at a lower end of the spiral screw blades, and device for preventing excavated earth and sand from flowing in a return direction when the auger head is rotated in a reverse direction.

REFERENCES:
patent: 2352326 (1944-06-01), Kandle
patent: 2401250 (1946-05-01), Kandle
patent: 2578014 (1951-12-01), Petersen
patent: 2751203 (1956-06-01), Compton
patent: 3690109 (1972-09-01), Turzillo
patent: 4180350 (1979-12-01), Watts
patent: 4269544 (1981-05-01), Rusche
patent: 4618289 (1986-10-01), Federer

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