F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
F16B 33/02 (2006.01) F16B 25/02 (2006.01) F16B 25/04 (2006.01) F16B 33/06 (2006.01)
Patent
CA 2639702
A screw (11) includes at least one thread (21) arranged on the screw shaft (12); circumferentially surrounding the shaft (12) at least in some regions, and having a thread pilot (22) located in the free region (15) of the shaft (12) and a plurality of recesses (31) provided in the thread (21) and opening radially outwardly, with the recesses (31) each having a first limiting wall (32) adjacent to the thread pilot (22) and a second limiting wall (33) remote from the thread pilot (22), and a plurality of cutting bodies (26) formed of a material having a hardness greater than a hardness of the thread, located in the recesses (31) formed in the thread (21) and having each a longitudinal axis (27) and an outer surface (28) surrounding the axis (27) at a distance therefrom, with the recesses (31) each having a flat bearing section (34) with a plurality of generatices extending substantially along a course of the thread (21) for receiving, at least in some regions, the outer surface (28) of a respective cutting body (26).
Gahn Juergen
Vorhauer Andreas
Gierczak Eugene J. A.
Hilti - Aktiengesellschaft
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