Material or article handling – Apparatus for moving material between zones having different... – Including serially arranged valves in path having a vertical...
Patent
1996-11-18
1999-10-05
Keenan, James W.
Material or article handling
Apparatus for moving material between zones having different...
Including serially arranged valves in path having a vertical...
414217, 414939, 414940, B65G 4900
Patent
active
059612690
ABSTRACT:
A functional load lock apparatus having two or more load lock chambers mounted on a central chamber which can be mounted on a single opening in a vacuum chamber such as a substrate processing platform for making integrated circuits on silicon wafers. Each load lock chamber preferably has a semi-cylindrical valve which remains sealed when the load lock chamber is open to atmospheric pressure. A wafer cassette holder positioned within each load lock chamber can be loaded and unloaded while the semi-cylindrical valves seal the vacuum chamber from atmospheric pressure. The semi-cylindrical valve pivots to an open position when the load lock chamber is under vacuum and the entire wafer cassette moves from the load lock chamber to the central chamber.
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Mattson Brochure.
Novellus Brochure.
Applied Materials Inc.
Keenan James W.
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