GB1333388A - Vacuum pumps - Google Patents

Vacuum pumps

Info

Publication number
GB1333388A
GB1333388A GB5599869A GB1333388DA GB1333388A GB 1333388 A GB1333388 A GB 1333388A GB 5599869 A GB5599869 A GB 5599869A GB 1333388D A GB1333388D A GB 1333388DA GB 1333388 A GB1333388 A GB 1333388A
Authority
GB
United Kingdom
Prior art keywords
zirconium
hafrium
thorium
neodymium
tantalum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5599869A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Edwards High Vacuum International Ltd
Original Assignee
Edwards High Vacuum International Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Edwards High Vacuum International Ltd filed Critical Edwards High Vacuum International Ltd
Publication of GB1333388A publication Critical patent/GB1333388A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J41/00—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas; Discharge tubes for evacuation by diffusion of ions
    • H01J41/12—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps
    • H01J41/18—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps with ionisation by means of cold cathodes
    • H01J41/20—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps with ionisation by means of cold cathodes using gettering substances

Landscapes

  • Electron Tubes For Measurement (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
GB5599869A 1969-11-14 1969-11-14 Vacuum pumps Expired GB1333388A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5599869 1969-11-14

Publications (1)

Publication Number Publication Date
GB1333388A true GB1333388A (en) 1973-10-10

Family

ID=10475464

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5599869A Expired GB1333388A (en) 1969-11-14 1969-11-14 Vacuum pumps

Country Status (5)

Country Link
US (1) US3713754A (de)
DE (1) DE2056155A1 (de)
FR (1) FR2069508A5 (de)
GB (1) GB1333388A (de)
NL (1) NL7016786A (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19717263A1 (de) 1997-04-24 1998-10-29 Leybold Vakuum Gmbh Penning-Vakuummeter
WO2003058069A2 (en) * 2002-01-14 2003-07-17 Varco Ltd. Arc vacuum pump
US11508564B2 (en) * 2014-11-19 2022-11-22 Hamilton Sundstrand Corporation Ion pumps and ion pump elements

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3018944A (en) * 1958-06-16 1962-01-30 Varian Associates Electrical vacuum pump apparatus
US3112863A (en) * 1960-10-06 1963-12-03 Cons Vacuum Corp Ion pump

Also Published As

Publication number Publication date
NL7016786A (de) 1971-05-18
FR2069508A5 (de) 1971-09-03
US3713754A (en) 1973-01-30
DE2056155A1 (de) 1971-06-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees