Patent ID: 9555477
Date: 2017-01-31
CPC Classifications: B23B,Y10T

Claim:
1. A holder comprising: a generally bar-shaped shank portion and a head portion located on a front end side of the shank portion and integrally formed therewith, the head portion including: an upper face, a first lateral face, a second lateral face opposite to the first lateral face, an insert attaching space provided on a front end of the first lateral face, an upper jaw and a lower jaw respectively located above and below the insert attaching space, a slit extending backward from the insert attaching space, an upper jaw connecting portion and a lower jaw connecting portion divided by the slit, an upper clamp surface of the upper jaw opposed to the insert attaching space, a lower clamp surface of the lower jaw opposed to the insert attaching space, and a groove is connected to a rear end of the slit wherein a thickness between the upper face and the groove is less than a thickness between the upper face and the slit, and wherein, in a direction perpendicular to a longitudinal direction from a front end to a rear end of the holder, the length of the groove is less than the length of the slit.