GB2220449B - Improved cryopump - Google Patents

Improved cryopump

Info

Publication number
GB2220449B
GB2220449B GB8816402A GB8816402A GB2220449B GB 2220449 B GB2220449 B GB 2220449B GB 8816402 A GB8816402 A GB 8816402A GB 8816402 A GB8816402 A GB 8816402A GB 2220449 B GB2220449 B GB 2220449B
Authority
GB
United Kingdom
Prior art keywords
cryopump
improved
improved cryopump
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 - Fee Related
Application number
GB8816402A
Other versions
GB8816402D0 (en
GB2220449A (en
Inventor
Richard Derek Amos
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.)
BOC Group Ltd
Original Assignee
BOC Group 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 BOC Group Ltd filed Critical BOC Group Ltd
Priority to GB8816402A priority Critical patent/GB2220449B/en
Publication of GB8816402D0 publication Critical patent/GB8816402D0/en
Publication of GB2220449A publication Critical patent/GB2220449A/en
Application granted granted Critical
Publication of GB2220449B publication Critical patent/GB2220449B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/06—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for evacuating by thermal means
    • F04B37/08—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for evacuating by thermal means by condensing or freezing, e.g. cryogenic pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
GB8816402A 1988-07-09 1988-07-09 Improved cryopump Expired - Fee Related GB2220449B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8816402A GB2220449B (en) 1988-07-09 1988-07-09 Improved cryopump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8816402A GB2220449B (en) 1988-07-09 1988-07-09 Improved cryopump

Publications (3)

Publication Number Publication Date
GB8816402D0 GB8816402D0 (en) 1988-08-17
GB2220449A GB2220449A (en) 1990-01-10
GB2220449B true GB2220449B (en) 1992-05-06

Family

ID=10640203

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8816402A Expired - Fee Related GB2220449B (en) 1988-07-09 1988-07-09 Improved cryopump

Country Status (1)

Country Link
GB (1) GB2220449B (en)

Also Published As

Publication number Publication date
GB8816402D0 (en) 1988-08-17
GB2220449A (en) 1990-01-10

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950709