US 11,999,038 B2
Attachment for powered hammer
Ian H. A. Blair, Wauwatosa, WI (US); Peter R. Heath, Wauwatosa, WI (US); James E. Pangerc, Pewaukee, WI (US); Joseph D. Greaney, Milwaukee, WI (US); and Julian L. Kinneavy, Sussex, WI (US)
Assigned to MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed on Apr. 7, 2023, as Appl. No. 18/132,182.
Claims priority of provisional application 63/328,849, filed on Apr. 8, 2022.
Prior Publication US 2023/0321807 A1, Oct. 12, 2023
Int. Cl. B25D 17/00 (2006.01)
CPC B25D 17/005 (2013.01) [B25D 2250/051 (2013.01); B25D 2250/331 (2013.01); B25D 2250/371 (2013.01)] 15 Claims
OG exemplary drawing
 
1. 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 coupled to the powered hammer, the impact portion configured to receive repeated impacts from the powered hammer; and
a driving portion in which the rod is receivable, the driving portion including a side load driving portion defining a side load driving axis that is parallel to the impact axis, the driving portion further including a top load driving portion defining a top load driving axis that is parallel to the side load driving axis,
wherein the side load driving portion includes
a one-way collet configured to transmit a driving force generated by the repeated impacts from the powered hammer to a side of the rod, the one-way collect movable within the side load driving portion and configured to allow the attachment to move relative to the rod in a first direction and to prevent relative movement between the attachment and the rod in a second direction, opposite the first direction,
an end cap configured to secure the one-way collet within the side load driving portion, the end cap disposed entirely within a periphery of the body, and
a biasing spring disposed between the one-way collet and the end cap, the biasing spring configured to apply a biasing force to the one-way collet.