Val C Robinson

US Patent:

57264473, Mar 10, 1998

Filed:

Jul 12, 1996

Appl. No.:

8/679647

Inventors:

Edward Aisawa - Sunnyvale CA
James L. Bertsch - Palo Alto CA
J. Michael Flanagan - Sunnyvale CA
Darrell L. Gourley - San Francisco CA
Val C. Robinson - Morgan Hill CA
Joseph Vandenburg - Mountain View CA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

H01J 4910

US Classification:

250288

Abstract:

The invention relates to an ionization chamber. More particularly, the invention relates to a mass spectrometer system having an ionization chamber incorporating a corona needle removable from outside the closed ionization chamber. In preferred embodiments, the corona needle is self-positioning and engages and disengages operational or safety electrical connections.

Address:

16955 Oak Leaf Dr, Morgan Hill, CA 95037

VIN:

5FNRL3H63AB048152

Make:

HONDA

Model:

ODYSSEY

Year:

2010