Gas separation: apparatus – Apparatus for selective diffusion of gases – Membrane to degasify liquid
Reexamination Certificate
2008-07-15
2008-07-15
Smith, Duane (Department: 1797)
Gas separation: apparatus
Apparatus for selective diffusion of gases
Membrane to degasify liquid
C096S010000, C096S193000, C095S046000
Reexamination Certificate
active
11430711
ABSTRACT:
A pump for use in operably evacuating a chamber in a vacuum degassing apparatus includes one or more pumping cavities that are in fluid communication with the chamber, and a continuous vent channel that has an outlet disposed in fluid communication with a respective one of the one or more pumping cavities. The vent channel is configured to provide dilution gas flow into the pumping cavity of the pump at a rate sufficient to prevent solvent condensation in the pumping cavity during operation of the pump in liquid degassing applications.
REFERENCES:
patent: 5340384 (1994-08-01), Sims
patent: 6071085 (2000-06-01), Bernhardt
patent: 6248157 (2001-06-01), Sims et al.
patent: 6309444 (2001-10-01), Sims et al.
patent: 6494938 (2002-12-01), Sims et al.
patent: 6675835 (2004-01-01), Gerner et al.
Haugen Law Firm PLLP
Rheodyne LLC
Smith Duane
Theisen Douglas J
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