Attachment for powered hammer

An attachment configured for use with a powered hammer to drive a rod into the ground, the attachment comprising:

• a body;
• an impact portion defining an impact axis, the impact portion including a bore configured to receive a driving shank that is coupled to the powered hammer, the impact portion configured to receive repeated impacts from the powered hammer;
• and
• a side load driving portion in which the rod is receivable, the side load driving portion including a one-way collet having a plurality of bearings configured to engage the rod and transmit a driving force due to impacts from the powered hammer to the rod,
• wherein the one-way collet includes a frustoconical portion, and wherein the body defines a frustoconical aperture in which the one-way collet is disposed,
• wherein the plurality of bearings is oriented in a plurality of rows, each of the plurality of rows extending around a circumference of the frustoconical portion, and
• wherein each of the plurality of bearings within a row of the plurality of rows has the same nominal size, and wherein the plurality of bearings in adjacent rows of the plurality of rows have different nominal sizes.

An attachment configured for use with a powered hammer to drive a rod into the ground, the attachment comprising:

• a body having a first end and a second end opposite the first end;
• an impact portion positioned on the first end of the body and configured to receive repeated impacts from the powered hammer, the impact portion including a bore configured to receive a driving shank coupled to the powered hammer;
• a top load driving portion positioned on the second end of the body and configured to transmit the repeated impacts to a top of the rod;
• and
• a side load driving portion configured to transmit the repeated impacts to a side of the rod, the side load driving portion including:
• a frustoconical collet disposed within an aperture in the body and configured to receive the rod,
• a biasing member configured to bias the frustoconical collet towards the first end of the body, and
• an end plate coupled to the body and configured to secure the biasing member and the collet within the body,
• wherein the biasing member is a conical compression spring.