Cutting by use of rotating axially moving tool – With means to apply transient – fluent medium to work or product – Including tool with duct
Reexamination Certificate
2005-08-15
2009-08-11
Bryant, David P (Department: 3726)
Cutting by use of rotating axially moving tool
With means to apply transient, fluent medium to work or product
Including tool with duct
C408S225000, C408S705000
Reexamination Certificate
active
07572088
ABSTRACT:
A deep hole boring head is provided which is capable of rotating about a central axis, a body whose front part has at least one cutting edge followed by a recess which leads to a duct inside the body, this duct allowing the chips formed during the boring to be cleared away rearwards, and includes at a front end thereof and at a center portion thereof a pilot drill bit capable of guiding the head during boring. Use for the boring of a production piece is made of titanium, the ratio L/D between the depth L of the hole bored and the diameter D of the latter being greater than or equal to 10, and the diameter D being greater than or equal to 65 mm.
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Bryant David P
Gates Eric A
Messier-Dowty S.A.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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