Tool driving or impacting – Drive controlled by relative axial movement of tool – Drive motor controlled
Patent
1992-08-28
1993-11-09
Smith, Scott
Tool driving or impacting
Drive controlled by relative axial movement of tool
Drive motor controlled
173135, 173211, B25D 1724
Patent
active
052594629
ABSTRACT:
A valveless percussive pneumatic drill includes a housing, a piston in the housing, reciprocating along the axis of the housing, a piston support bearing in the housing and an air distributor in the housing, the air distributor being mounted in the housing for flexible elastic movement therein, to permit slight misalignment of the piston with respect to the axis of the housing.
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Ingersoll-Rand Company
Selko John J.
Smith Scott
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