Pneumatic impact piercing tool

Details Pneumatic impact piercing tool Pneumatic impact piercing tool

2006-04-18

2006-04-18

Smith, Scott A. (Department: 3721)

Tool driving or impacting

Impacting devices

Selective axial direction of impact

C175S019000, C175S296000

Reexamination Certificate

active

07028785

ABSTRACT:
A pneumatic ground piercing tool includes a tail assembly including a tail nut and tail cap, the tail cap having a plurality of discharge ports for exhausting spent compressed air, the discharge ports opening into an annular space between a rearwardly opening recess of the tail cap and an air supply conduit such that the exhaust ports are shielded by a side wall of end cap from plugging when the ground piecing tool is operated in reverse mode.

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