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The tip is much more pronounced than on a ground rod and has a greater diameter that the diameter of the rod.
It is good for truck grounding as well as doing soil resistivity tests. Two or three hits with a 3 field hammer is dwmark than sufficient. These joints proved to be reliable, but driving tandem 8-ft rods solidly coupled proved to be difficult. Over the years, Detroit Edison had registered concerns to many people over their grounding practices and were looking for a better way.
OK Remaining lectures Last lecture by Dr. Deemark ground rod can then be driven to the desired depth and a suitable clamp attached to the rod. The sectional ground rods GR are sold separately.
DeMARK offers an innovative combination of production machining, CNC machining, screw machining, multi-spindle drilling, through broaching, button broaching, assembly, and dedicated manufacturing cells. They were developed to improve efficiency and save money over other methods of coupling.
Can connect two locations or dead end. An electrical grounding rod driving device comprising an elongated cylinder having a hammer secured within each end portion and encompassing a ground rod receiving and driving shaft having a single anvil affixed to one end thereof within said cylinder and having opposing striking surfaces for selective engagement by the striking face of either hammer, the driving shaft having a recess in each end for selective engagement of one end of said rod, and means to lock said cylinder and said shaft in non-operable position.
It must impose minimum labor costs These criteria were successfully met, and the new coupler is now in use.
The shorter rods can be driven by personnel at grade groune, eliminating the need to operate a pneumatic hammer from a bucket truck. This allows for use of threadless ground rod couplers without use of additional tools. Cylinder 10 is then raised and lowered repeatedly for contact between hammer striking face 12b and anvil striking surface 22b.
The opening hole is larger than the ground demaark diameter and the end of the hole is smaller than the rod. In the grounc, grounding rods have been of various lengths and have been hollow or solid and generally have terminated with a short portion of the grounding rod projecting above ground.
We have supplied major utility companies for over 20 years. The driver has the striking force inside the unit that allows for force to be directed upward as well as downward.
Electrical grounding rod driving device - E & J Demark, Inc.
The amount of taper is critical to insure a tight fit. To be installed properly, are must be taken so as not to cause major distortion of the ground rod end in driving. The present invention is in the field of electrical conductors. An improvement over these devices is disclosed in U.
This is an exclusive design that is simple and proven to be effective. The present invention in the storage mode is then placed over the non-pointed end of the 8 foot grounding rod as shown in FIG. Be sure to check out all the training. One that deserves mention is used in Northern Florida. In addition, they have the physical characteristics required for optimal performance.
In other instances the other end of the wooden driving rod has a weight attached thereto, and the rod was moved up and down inside the hollow grounding rod.
Not only have these couplers proven a better connection, but also are economical and save time in installation. The connection is made by first inserting the ground wire into the designated hole of the connector.
1115 Ottokee St. ● P.O. Box 416 ● Wauseon, OH Tel ● Fax WEB: ●
Registration Forgot your password? The threadless coupler has proven to be a better method of splicing ground rods than the traditional "threaded" couplers. Normally, grounding for a pole line consists of only a single rod or perhaps two rods in parallel.
The present invention is a double-headed hammer slidingly encompassing a ground rod driving shaft having a single anvil affixed thereto which can be selectively engaged by either hammer. DeMARK introduced new designs in manual ground grround drivers, temporary grounders, drive drills, special drive bits, quick connect wire to rod connectors and most notably "Threadless Ground Rod Couplers".
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