Stake notably for measuring the electrical resistances of ground

Details Stake notably for measuring the electrical resistances of ground Stake notably for measuring the electrical resistances of ground

1981-10-19

1983-12-20

Perham, Alfred C.

Static structures (e.g., buildings)

With piercing or expanding earth anchor

Auger-type penetrator

52155, 411411, 411453, E02D 574

Patent

active

044209185

ABSTRACT:
A stake is provided in the form of a smooth cylindrical metal rod which has a point at its lower end and to which is welded a screw thread formed by a helical spring having a polygonal cross-section, preferably a square section, which is welded to the rod at a limited number of spaced-apart points, at least a part of the spring being thus free to move with respect to the rod. Preferably, only the lower end of the spring is welded to the rod. The stake is more especially, but not exclusively, usable for measuring the electrical resistances of ground connections.

REFERENCES:
patent: 810807 (1905-09-01), Pitcher
patent: 1562343 (1975-11-01), La Bore
patent: 2901789 (1959-09-01), Frank
patent: 3688454 (1972-09-01), Wolfcarius

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