Cutting by use of rotating axially moving tool – Means to drive tool – Including means to move tool along tool-axis
Reexamination Certificate
2007-12-04
2007-12-04
Carter, Monica (Department: 3722)
Cutting by use of rotating axially moving tool
Means to drive tool
Including means to move tool along tool-axis
C408S005000, C408S006000, C408S017000
Reexamination Certificate
active
10659410
ABSTRACT:
A drill has a tubular outer housing and a tubular inner housing. The inner housing is movable between extended and retracted positions. A pneumatic motor with a chuck mounts to the inner housing. Air pressure is delivered to annular pistons to cause the inner housing to extend and retract. Also, an annular hydraulic chamber with a variable orifice bypass controls the rate of feed. A processor records the total number of holes being drilled as well as recording the time duration for each hole.
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Born Glenn G.
Krause Gus E.
Maurer William B.
Addisu Sara
Bracewell & Giuliani LLP
Carter Monica
Lockheed Martin Corporation
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