Coating apparatus – Gas or vapor deposition – Running length work
Reexamination Certificate
2005-04-12
2005-04-12
Hassanzadeh, Parviz (Department: 1763)
Coating apparatus
Gas or vapor deposition
Running length work
C156S345310, C204S298240, C118S719000, C118S733000
Reexamination Certificate
active
06878207
ABSTRACT:
Disclosed herein is an improved gas gate for interconnecting regions of differing gaseous composition and/or pressure, more particularly between atmosphere and a vacuum. The gas gate includes a cylinder within a housing situated between the regions of differing gaseous pressure, wherein the gas gate provides for choke mode transonic flow of air leaks between the regions. A web of substrate material is adapted to move between the regions with at least one roller in a first region and at least one roller in a second region. The rollers are positioned to create sufficient tension as the web advances over the top peripheral portion of the cylinder between the two regions or under the bottom peripheral portion of the cylinder between the two regions.
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Cannella Vincent
Doehler Joachim
Energy Conversion Devices Inc.
Hassanzadeh Parviz
Moore Karla
Schumaker David W.
Serventi Anthony J.
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