Pumps – Electrical or getter type
Reexamination Certificate
2004-06-28
2008-08-19
Freay, Charles G (Department: 3746)
Pumps
Electrical or getter type
C417S050000
Reexamination Certificate
active
07413412
ABSTRACT:
A vacuum micropump for use in a sealed package includes at least one pumping cell and a magnetic field proximate to the pumping cell. The pumping cell has at least one anode, at least one dielectric in contact with the at least one anode, at least one titanium cathode in contact with the dielectric and an electric field between the at least one anode and the at least one cathode. The dielectric defines a space between the at least one anode and the at least one cathode. The vacuum micropump may be used to gauge pressure within the sealed package. An appropriate method of use is also provided.
REFERENCES:
patent: 3596123 (1971-07-01), Levin
patent: 4460317 (1984-07-01), Kern et al.
patent: 4594054 (1986-06-01), Ishimaru et al.
patent: 4631002 (1986-12-01), Pierini
patent: 5655886 (1997-08-01), Alderson
patent: 5980212 (1999-11-01), Shen et al.
patent: 6264433 (2001-07-01), Spagnol
“Miniature Sputter-Ion Pump Design Considerations” by S.L. Rutherford; 1999 NASA/JPL Miniature Vacuum Pumps Workshop, Jul. 20-21, 1999.
Govyandinov Alexander
Ramamoorthi Sriram
Freay Charles G
Hewlett--Packard Development Company, L.P.
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