Patent ID: 11931875
Assignee: DUBOIS ET CIE S.A.A
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 13:
14. The power tool according to claim 12, wherein each of the first half ring and the second half ring has a curved shape with a front surface, a rear surface, two end portions, and two lateral portions extending between and perpendicular to the front surface and the rear surface, and:
the rear surface is flat;
the front surface comprises a first area extending parallel to the rear surface and a second area having a surface forming an angle with regard to the rear surface; and
a shoulder is between the first and second areas, such that a first thickness of the first half ring and the second half ring between the rear surface and the first area is greater than a second thickness between the rear surface and the second area.