Patent ID: 11901214
Assignee: ZEUS COMPANY LLC
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 4:
5. The wafer processing apparatus of claim 4, wherein:
each of the one of more vacuum connection flow paths includes a first vertical vacuum flow path extending in a vertical direction inside the rotating core and having an upper end that is open toward an upper surface of the rotating core, a first horizontal vacuum flow path connected to a lower end of the first vertical vacuum flow path and extending in a horizontal direction toward an outer circumferential surface of the rotating core, a second vertical vacuum flow path extending in the vertical direction inside the fixed core and having a lower end that is open toward a lower surface of the fixed core, and a second horizontal vacuum flow path connected to an upper end of the second vertical vacuum flow path and extending in the horizontal direction toward an inner circumferential surface of the fixed core to be connected to the first horizontal vacuum flow path;
each of the one or more press connection flow paths includes a first vertical press flow path extending in the vertical direction inside the rotating core and having an upper end that is open toward the upper surface of the rotating core, a first horizontal press flow path connected to a lower end of the first vertical press flow path and extending in the horizontal direction toward the outer circumferential surface of the rotating core, a second vertical press flow path extending in the vertical direction inside the fixed core and having a lower end that is open toward the lower surface of the fixed core, and a second horizontal press flow path connected to an upper end of the second vertical press flow path and extending in the horizontal direction toward the inner circumferential surface of the fixed core to be connected to the first horizontal press flow path; and
the one or more vacuum connection flow paths and the one or more press connection flow paths do not intersect each other.