Cutters – for shaping – Rotary cutting tool – Face or end mill
Reexamination Certificate
2007-04-19
2009-11-03
Ashley, Boyer D (Department: 3724)
Cutters, for shaping
Rotary cutting tool
Face or end mill
C408S233000, C408S226000, C408S23900A, C279S008000
Reexamination Certificate
active
07611311
ABSTRACT:
A cutting tool, and a loose top therefore, includes two parts detachably connected to each other via a threaded joint in which co-operating male and female threads are included in the form of helicoidal ridges. The profile shape of each helicoidal ridge is defined by a top and two flanks, which delimit a helicoidal groove having a bottom. The first flank is inclined in relation to a center axis of the tool at a first angle that is smaller than a second angle of the second flank in relation to the center axis. Accordingly, the thread ridge is reinforced in comparison with thread ridges having a symmetrical profile shape, whereby larger tensile forces than compressive forces can be applied to the threaded joint while avoiding damage to the thread ridges.
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Kakai Isak
Larsson Kenneth
Lehto Ralf
Örtlund Magnus
Addisu Sara
Ashley Boyer D
Drinker Biddle & Reath LLP
Sandvik Intellectual Property AB
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