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

Claim 17:
18. The combination bit holder and base block of claim 15, the first c-shaped annular ring comprising at least one of:
a first ring comprising a round first cross-section taken at an angle to a first longitudinal axis of the first ring;
a second ring comprising a rectangular second cross-section taken at an angle to a second longitudinal axis of the second ring, a second planar inner surface, and a second planar outer surface that tapers inwardly as the second planar outer surface axially extends from a first side of the second ring to a second side of the second ring;
a third ring comprising a hexagonal third cross-section taken at an angle to a third longitudinal axis of the third ring;
a fourth ring comprising a square fourth cross-section taken at an angle to a fourth longitudinal axis of the fourth ring;
a fifth ring comprising a rectangular fifth cross-section taken at an angle to a fifth longitudinal axis of the fifth ring, a fifth planar inner surface, and a fifth planar outer surface;
a sixth ring comprising a sixth planar inner surface and a sixth arcuate outer surface;
a seventh ring comprising an oval seventh cross-section taken at an angle to a seventh longitudinal axis of the seventh ring; and
a ring comprising an eighth planar inner surface and an eighth arcuate outer surface.