Patent ID: 9341942
Filing Date: 2016-05-17
CPC Classification: G03B,G03F,H01L

Claim Text:
1. A chamber assembly for providing a sealed chamber adjacent to a workpiece, the chamber assembly comprising: a chamber housing positioned adjacent to and spaced apart a chamber gap from the workpiece; a seal assembly that seals the chamber housing to the workpiece to create the sealed chamber between the chamber housing the workpiece, the seal assembly including a flexible barrier that is secured to the chamber housing, and a compliant seal that is secured to the flexible barrier, wherein the flexible barrier expands or contracts to adjust for changes in the chamber gap, wherein the compliant seal directly contacts the workpiece to seal against the workpiece conforming to non-uniformities in the workpiece, and wherein the flexible barrier and the compliant seal cooperate to seal the chamber gap; and a transducer assembly in fluid communication with the sealed chamber, the transducer assembly expanding or contracting as needed to compensate for pressure variations in the sealed chamber due to leaks or injections, thereby stabilizing the pressure in the sealed chamber, the transducer assembly including a variable chamber that alternatively expands and contracts.