GB0004263D0 - Improvements in vacuum pumps - Google Patents

Improvements in vacuum pumps

Info

Publication number
GB0004263D0
GB0004263D0 GBGB0004263.0A GB0004263A GB0004263D0 GB 0004263 D0 GB0004263 D0 GB 0004263D0 GB 0004263 A GB0004263 A GB 0004263A GB 0004263 D0 GB0004263 D0 GB 0004263D0
Authority
GB
United Kingdom
Prior art keywords
vacuum pumps
pumps
vacuum
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.)
Ceased
Application number
GBGB0004263.0A
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 GBGB0004263.0A priority Critical patent/GB0004263D0/en
Publication of GB0004263D0 publication Critical patent/GB0004263D0/en
Priority to EP01301502A priority patent/EP1130263A3/en
Priority to US09/791,525 priority patent/US20010041145A1/en
Priority to JP2001102099A priority patent/JP2001304156A/en
Ceased 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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/082—Details specially related to intermeshing engagement type pumps
    • F04C18/084—Toothed wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Non-Positive Displacement Air Blowers (AREA)
GBGB0004263.0A 2000-02-23 2000-02-23 Improvements in vacuum pumps Ceased GB0004263D0 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GBGB0004263.0A GB0004263D0 (en) 2000-02-23 2000-02-23 Improvements in vacuum pumps
EP01301502A EP1130263A3 (en) 2000-02-23 2001-02-20 Helical gear vacuum pump
US09/791,525 US20010041145A1 (en) 2000-02-23 2001-02-22 Vacuum pumps
JP2001102099A JP2001304156A (en) 2000-02-23 2001-02-23 Improved vacuum pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0004263.0A GB0004263D0 (en) 2000-02-23 2000-02-23 Improvements in vacuum pumps

Publications (1)

Publication Number Publication Date
GB0004263D0 true GB0004263D0 (en) 2000-04-12

Family

ID=9886243

Family Applications (1)

Application Number Title Priority Date Filing Date
GBGB0004263.0A Ceased GB0004263D0 (en) 2000-02-23 2000-02-23 Improvements in vacuum pumps

Country Status (4)

Country Link
US (1) US20010041145A1 (en)
EP (1) EP1130263A3 (en)
JP (1) JP2001304156A (en)
GB (1) GB0004263D0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008533361A (en) 2005-03-10 2008-08-21 ノーティス，アラン Sealed and tapered screw pump / screw pressure motor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB419338A (en) * 1933-01-03 1934-11-09 British Thomson Houston Co Ltd Improvements in and relating to screw pumps or compressors
DE594691C (en) * 1933-01-04 1934-03-21 Aeg Screw compressor, consisting of right- and left-handed, mutually engaging screws coupled by cogwheels
GB552562A (en) * 1941-09-01 1943-04-14 Stothert & Pitt Ltd Improvements to screw displacement pumps
DE29720541U1 (en) * 1997-11-19 1999-03-18 SIHI Industry Consult GmbH, 25524 Itzehoe Screw gas pump

Also Published As

Publication number Publication date
US20010041145A1 (en) 2001-11-15
EP1130263A3 (en) 2002-07-24
EP1130263A2 (en) 2001-09-05
JP2001304156A (en) 2001-10-31

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Legal Events

Date Code Title Description
AT Applications terminated before publication under section 16(1)