Cutting by use of rotating axially moving tool – Means to drive tool – Including means to move tool along tool-axis
Reexamination Certificate
2007-08-07
2007-08-07
Carter, Monica (Department: 3722)
Cutting by use of rotating axially moving tool
Means to drive tool
Including means to move tool along tool-axis
C408S015000, C408S110000
Reexamination Certificate
active
10516254
ABSTRACT:
A hydraulic stop for use in drilling or countersinking operations comprises a rotatable body for rotating a tool about its axis. A cage adapted to contact the surface of a workpiece when the tool has penetrated into the workpiece by a predetermined distance actuates a trip mechanism comprising a plunger-operated hydraulic valve as the tool penetrates the workpiece more than the predetermined distance. The plunger is of adjustable length. When actuated the trip mechanism allows the body to shrink in length suddenly. The cage is axially adjustable in relation to the body to set the predetermined depth at which the trip mechanism actuates. A plurality of holes spaced around the circumference of the body to which the cage is mounted allow drainage of coolant whatever the axial position of the cage.
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International Preliminary Report (Form PCT/IB/373) dated Apr. 18, 2006; including Written Opinion of the International Searching Authority (Form PCT/ISA/237) (Six (6) pages).
Ditchfield Barry James
Goth Robert James
Mullins Robert Lawrence
Penny Stephen Graham
BAE Systems plc
Carter Monica
Crowell & Moring LLP
Gates Eric A.
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