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US 4,284,375 AGranted
One-lip tool for deep drilling
AssigneeTBT Tiefbohrtechnik GmbH & Co. KG
InventorBruno Muhleisen
Life of this patent
Estimating the term…
Abstract
A one-lip tool for deep drilling has a drill shaft, and a clamping sleeve and a drill head arranged at the opposite ends of the drill shaft. The drill shaft has a peripheral surface including two diametrically opposite surface portions. A chip groove is provided in one of the surface portions. A reinforcing formation, such as at least one inwardly extending rib, is provided in the other opposite surface portion of the drill shaft.
Claims8
A one-lip tool for deep drilling, comprising
- a clamping sleeve;
- a drill head having a drilling blade;
- and
- a drill shaft having an axis and two axial ends at one of which ends said clamping sleeve is arranged and at the other of which ends said drill head is arranged, said drill shaft having a peripheral surface including two diametrically opposite surface portions, said drill shaft having an axially extending chip groove in one of said surface portions and at least one projection in the region of the other of said surface portions, said projection forming a radially inwardly extending rib and terminating at an axial distance from said clamping sleeve and said drill head.
1 more element
Dependencies are inferred from the claim text.