Ground rods and apparatus for forming and placing such rods

Implements or apparatus for applying pushing or pulling force – Pipe or rod jack – Tie rod tensioner

Patent

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Details

E21B 1922

Patent

active

049212176

ABSTRACT:
This invention relates generally as indicated to ground rods, and more particularly to one piece ground rods of substantial length, and a method and apparatus for forming and placing such rods. Ground rods are normally steel rods having a copper cladding.

REFERENCES:
patent: 2624177 (1953-01-01), Warren
patent: 2871896 (1959-02-01), Markwell
patent: 3088385 (1963-05-01), Dorkins et al.
patent: 3329401 (1967-07-01), Becker et al.
patent: 3613804 (1971-10-01), Johsson
patent: 3690136 (1972-09-01), Slator et al.
patent: 3871617 (1975-03-01), Majima
patent: 4249600 (1981-02-01), Bailey
patent: 4417624 (1983-11-01), Gockel
patent: 4555090 (1985-11-01), Averhoff
patent: 4660635 (1987-04-01), Wittrisch

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