Patent ID: 6405723
Filing Date: 2002-06-18
Classification: B23B,B23Q,Y10T

Abstract:
A tool for effecting at least one of drilling and chiseling, comprising a tubular shaft (2,22) having an axially extending through-channel (8,28) and provided, at one of axial ends thereof, with a drilling or chiseling head (5); a connection member (3,23) connected with another of axial ends of the shaft (2,22); a cross-bore (7,27) connecting the through-channel (8,28) of the shaft (2,22) with a tool circumference; and a shank (4,24) provided at an end of the connection member (3,23) remote from the shaft (2,22), a largest cross-sectional surface (A1,A4) of the connection member (3,23) corresponding at least to 2.5 times of a largest cross-sectional surface (A2,A5) of the shank (4,24).