Patent ID: 7708499

Claim:
A clamp assembly for securing a vibratory device to a pile comprising: a frame adapted to be secured to the vibratory device; a first clamp member supported by the frame, the first clamp member comprising a first engaging surface defining peaks and valleys and comprising a first surface layer of carbide alloy material formed on the peaks and valleys defined by the first engaging surface; a second clamp member supported by the frame, the second clamp member comprising a second engaging surface defining peaks and valleys and comprising a second surface layer of carbide alloy material formed on the peaks and valleys defined by the second engaging surface; and an actuator arranged to displace at least one of the first and second clamp members such that the first and second engaging surfaces engage the pile such that the pile is gripped between the first and second clamp members; where the first and second engaging surface layers define a grit of at least 180 Emery to enhance friction between the first and second clamp members and the pile when the pile is gripped between the first and second clamp members; and the first and second engaging surface layers define a thickness of at least 0.0025 inches.