Insertion end for a rotary and a percussive tool

Details Insertion end for a rotary and a percussive tool Insertion end for a rotary and a percussive tool

2008-09-30

2008-09-30

Howell, Daniel W (Department: 3722)

Cutting by use of rotating axially moving tool

Tool or tool with support

Including detailed shank

C175S320000

Reexamination Certificate

active

11002171

ABSTRACT:
An insertion end of a tool is driven along an axis at least partially rotary or percussively, which extends along the axis within a maximum guide diameter. At least one longitudinally closed locking groove and rotary driving groove is longitudinally closed at a longitudinal locking end towards the free leading end. The rotary driving groove has a groove width with at least one tangential force contact surface. At least two rotary driving grooves have a length of at least three times that of the guide diameter are arranged on the tool-side ahead of the longitudinal locking end, and have a contact length at least 1.5 times the guide diameter configured to be one fifth of the guide diameter.

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Search Report, From EPO, dated Nov. 10, 2005.

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