Hydraulic and earth engineering – Foundation – Columnar structure
Patent
1997-10-09
1999-07-06
Graysay, Tamara
Hydraulic and earth engineering
Foundation
Columnar structure
405236, 4052595, 175323, E02D 574
Patent
active
059190051
ABSTRACT:
A ground anchor device for securing a building foundation and other structures to a ground surface using the subject anchor device. The anchor device is designed to be self advancing when rotated into the ground surface to depths of 10 to 30 feet and greater and to engage and penetrate an underground rock formation for providing greater anchor stability. The device includes a plurality of external hollow pipe sections and a plurality of internal pipe sections. The external pipe sections are joined together with helix couplings. Each helix coupling includes a helix around the exterior surface of the helix coupling. The helice are used for driving the external pipe sections into the ground. The internal pipe sections are coupled together and have a hollow cross section with a lower end of one of the internal pipe sections attached to a rock bit. An upper end of one of the external pipe sections includes a drive cap for accepting various types of torque and percussion drives for drilling the anchor device into different types of soils. Also, an upper end of one of the internal pipe section is adapted for connection to a percussion rock drill for drilling the lower end of the internal pipe section into the rock. The lower end of the internal pipe section may include a series of grout holes along it's length for ejecting grout which is pumped under pressure through the grout holes for grouting the rock bit inside a drill hole.
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patent: 3470701 (1969-10-01), Turzillo
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patent: 3604214 (1971-09-01), Turzillo
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patent: 3651876 (1972-03-01), Henson
patent: 3690109 (1972-09-01), Turzillo
patent: 3886754 (1975-06-01), Turzillo
Crabtree Edwin H.
Graysay Tamara
Integrated Stabilzation Technologies Inc.
Lee Jong-Suk
Margolis Donald W.
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