US 11,938,552 B2
Blank holder and blank
Markus Lichtensteiger, Montlingen (CH); and Sven Hellmich, Forst (DE)
Assigned to Ivoclar Vivadent AG, Schaan (LI)
Filed by Ivoclar Vivadent AG, Schaan (LI)
Filed on Nov. 17, 2022, as Appl. No. 18/056,306.
Claims priority of application No. 21210619 (EP), filed on Nov. 25, 2021.
Prior Publication US 2023/0158584 A1, May 25, 2023
Int. Cl. B23Q 3/00 (2006.01); A61C 13/00 (2006.01); B23C 3/16 (2006.01); B23C 9/00 (2006.01); B23Q 3/06 (2006.01)
CPC B23C 9/00 (2013.01) [A61C 13/0022 (2013.01); B23C 3/16 (2013.01); B23Q 3/062 (2013.01); B23C 2240/21 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A blank holder and blank combination comprising
a blank holder, and
a disc-shaped or substantially disc-shaped blank,
wherein the blank holder comprises a receiving area for the disc-shaped or substantially disc-shaped blank, the receiving area being curved,
wherein the receiving area forms a part-circular or arc-shaped form-fitting profile, and
wherein the disc-shaped or substantially disc-shaped blank comprises a part-circular guide shell that is attached to an outer circumference of the blank and which can be fitted into the form-fitting profile.