Boring or penetrating the earth – Cutter element laterally shiftable below ground – With separable means holding tool collapsed above ground only
Patent
1974-12-30
1976-02-03
Abbott, Frank L.
Boring or penetrating the earth
Cutter element laterally shiftable below ground
With separable means holding tool collapsed above ground only
52163, 61 5368, 175277, E02D 576
Patent
active
039359123
ABSTRACT:
The present invention relates to an anchoring device which rigidly supports many kinds of standing objects in public works or in the construction industry and provides resistance to pulling loads exerted on the device, and also to a method for settling the device in the bottom of a deep shaft bored into the ground.
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patent: 3173524 (1965-03-01), Redlich
patent: 3397750 (1968-08-01), Wickland
patent: 3618328 (1971-11-01), Nojima
patent: 3774361 (1973-11-01), Tanner
Abbott Frank L.
Raduazo Henry
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