Patent ID: 11891895
Assignee: THE SOLLAMI COMPANY
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A bit holder comprising:
a body portion;
a generally cylindrical hollow shank axially depending from a bottom of the body portion, the shank comprising:
a forward portion of the shank adjacent the bottom of the body portion, the forward portion comprising an outer diameter including one of a declining taper outer surface towards a distal end of the shank and a generally cylindrical outer surface, the forward portion including a first annular groove positioned circumferentially around the forward portion approximately midway between a forward end of the forward portion and a distal end of the forward portion;
a distal portion of the shank comprising an outer diameter including an outer surface, the distal portion including a second annular groove therearound;
an elongate slot through a side wall of said hollow shank axially extending from the distal end of the shank to the forward portion adjacent the first annular groove, the elongate slot comprising an upper termination adjacent said forward portion;
a first c-shaped annular ring disposed in the first annular groove;
a second c-shaped annular ring disposed in the second annular groove
an outer diameter of said first annular ring being larger than the outer diameter of said forward portion of the shank;
an outer diameter of said second annular ring being larger than the outer diameter of said distal portion; and

a bore axially extending from a forward end of the body portion to the distal end of the shank.