Boring or penetrating the earth – Below-ground impact members – With releasable means to detachably retain telescoping...
Patent
1975-11-17
1977-07-19
Shapiro, Jacob
Boring or penetrating the earth
Below-ground impact members
With releasable means to detachably retain telescoping...
61 39, 61 536, 61 56, 175292, E02D 574
Patent
active
040360261
ABSTRACT:
A method for establishing an anchor inside of a retaining wall is described; in which an auger bore is excavated through said retaining wall with an earth auger and thereafter by reversing the rotation of said earth auger an enlarged bore is formed at the extreme end portion of said auger bore; and in which an auger head and an auger shaft are separated from each other to leave an anchor plate formed integrally with said auger head as well as a rod connected to said anchor plate within the enlarged bore and the auger bore, and then mortar is filled in these bores to establish an anchor made of concrete in the earth. In one preferred embodiment of the invention, the rod and the anchor plate are connected to each other by fastening with a nut, this connecting portion being enclosed in a box, and also the peripheral surface of said rod is coated with a synthetic resin film, whereby a provision is preliminarily made such that the rod may be easily extracted from the anchor after the use of the anchor has ended. Also an apparatus for practicing the aforementioned methods is described.
REFERENCES:
patent: 3512366 (1970-05-01), Turzillo
patent: 3815368 (1974-06-01), Turzillo
patent: 3833706 (1974-09-01), Edwards
Kabushiki Kaisha Takechi Koumusho
Shapiro Jacob
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