Cutting by use of rotating axially moving tool – With product handling or receiving means
Reexamination Certificate
2008-04-15
2008-04-15
Carter, Monica (Department: 3722)
Cutting by use of rotating axially moving tool
With product handling or receiving means
C408S204000, C408S207000, C408S703000
Reexamination Certificate
active
11063295
ABSTRACT:
Pilot drill with coupon retainer and hot tapping machine using the same that positively retains a coupon cut out by a hole saw. The pilot drill bit has a shank having a driving end for attachment to a drill driver and a cutting end having a cutting edge thereon, the cutting edge being sized to drill a hole of selected diameter through a workpiece, and a movable retaining finger mounted on the shank adjacent the cutting edge, the movable retaining finger having a first position fitting within the cutting diameter of the cutting edge and a second, extended position where a portion thereof lies outside the cutting diameter to retain on the drill shank a workpiece through which the drill bit may have drilled.
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Blakely , Sokoloff, Taylor & Zafman LLP
Carter Monica
Talbot Michael W.
LandOfFree
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