Patent ID: 7559557
Filing Date: 2009-07-14
Classification: H01J,Y10S

Abstract:
1. A sealing system comprising: a first vacuum chamber having walls defining a first vacuum chamber aperture; a second vacuum chamber having walls defining a second vacuum chamber aperture; a first sealing unit having a body defining an opening, said first sealing unit having a proximal end and a distal end, said proximal end of said first sealing unit disposed on said first vacuum chamber; a first o-ring disposed between said first sealing unit and said first vacuum chamber; a second sealing unit having a body defining an opening, said second sealing unit having a distal end and a proximal end, said distal end of said second sealing unit disposed on said distal end of said first sealing unit, said proximal end of said second sealing unit disposed on said second vacuum chamber; a second o-ring disposed between said second sealing unit and said second vacuum chamber; and a third o-ring disposed between said second sealing unit and said first sealing unit.