Patent ID: 11927621
Assignee: HIGH PRECISION DEVICES, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 20:
21. The apparatus of claim 1, wherein
the chuck comprises a receiving surface and one or more spring-tensioned clamping elements surrounding the receiving surface of the chuck, the one or more spring-tensioned clamping elements being configured to hold a wafer to the chuck at its edges; wherein
the chuck is configured such that actuation of the one or more spring-tensioned clamping elements is achieved by connection to a push bar within the column in connection with one or more motorized actuators; wherein actuation of the push bar against the one or more spring-tensioned clamping elements lifts the one or more spring-tensioned clamping elements above the receiving surface of the chuck to create a receiving space for the wafer and wherein release of the push bar causes the one or more spring-tensioned clamping elements to retract downwards and clamp the wafer to the receiving surface.