Title:
IONIZATION VACUUM GAUGE WITH X-RAY SHIELDING AND ION REFLECTING MEANS
United States Patent 3465189
Inventors:
Redhead, Paul Aveling
Publication Date:
09/02/1969
Export Citation:
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Assignee:
Canadian, Patents Dev
Primary Class:
313/7
Other Classes:
250/515.1, 315/108, 324/462
International Classes:
H01J41/04; H01J41/00; (IPC1-7): H01J7/16; H01J13/28; H01J17/24
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US Patent References:
3394301Method and apparatus for determining composition and pressure of a gas at low pressure
3378712Field emission ionization gauge with restricted line of sight between field emissionanode and ion collector
3341727Ionization gauge having a photocurrent suppressor electrode
3319117Ionization vacuum gauge for use in the 10-6 to 1 torr range
3292078Vacuum gauge having an chi-ray trap and a shield
3274326Nude ion gage assembly




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