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

Claim 8:
9. The wafer processing apparatus of claim 8, wherein:
a press flow path packing seating groove, which is recessed in an annular shape, is formed in the inner circumferential surface of the fixed core;
the press flow path packing includes a body portion which is inserted and seated in the press flow path packing seating groove and has a through-hole formed such that the second horizontal press flow path is not closed, and a lip portion which protrudes from the body portion toward an outer circumferential surface of the rotating core to be in contact with the outer circumferential surface of the rotating core without closing the first horizontal press flow path; and
in a direction toward the outer circumferential surface of the rotating core in the horizontal direction, the lip portion of the press flow path packing protrudes in the vertical direction to be inclined in a direction toward the first horizontal press flow path.