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System for driving anchors in the ground

Image Number 6 for United States Patent #5104264.

Apparatus for driving anchors in the ground by gas pressure which includes on a frame to be maintained stationary relative to the ground, a mechanism for firing and combustion of a pyrotechnical composition, and for launching an anchor. The apparatus including an acoustic shield for gas expansion which is slidingly mounted on a recoil ramp so as to balance the impulse transmitted to the anchor by the force of gravity.

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