Back to results
US 6,747,205 B2Granted
Device for assisting in the measurement of the earth resistance
AssigneeLem Norma GmbH
InventorJurgen Gobelhaider
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeLem Norma GmbH
InventorJurgen Gobelhaider
Estimating the term…
The invention relates to a device for assisting in the measurement of the earth resistance comprising a ground rod with a wire coiled up on a reel or the like, and electrical connecting means for connecting the wire to the ground rod. To provide such a device which is practical to handle, simple, small, and capable of being produced at low costs, it is provided for the reel or the like to be rotatably mounted on the ground rod. A further improvement results in that the ground rod comprises an offset portion in whose region the reel or the like is rotatably mounted. Preferably, the electrical connecting means between ground rod and wire comprise sliding rings on the rotation axis, the reel or the like. For an rapid exchangeability of the reel, the latter may be mounted on the ground rod by a snap connection.
A device for assisting in measuring the earth resistance, said device comprising a ground rod, a reel rotatably mounted on the ground rod, and a wire coiled up on said reel, and electrical connecting means for connecting said wire to said ground rod, wherein said ground rod has an offset portion, said reel being rotatably mounted to said ground rod at said offset portion.
Dependencies are inferred from the claim text.