IT8125532A0 - Pompa a pistone rotante con camera equilibratrice di pressione. - Google Patents

Pompa a pistone rotante con camera equilibratrice di pressione.

Info

Publication number
IT8125532A0
IT8125532A0 IT8125532A IT2553281A IT8125532A0 IT 8125532 A0 IT8125532 A0 IT 8125532A0 IT 8125532 A IT8125532 A IT 8125532A IT 2553281 A IT2553281 A IT 2553281A IT 8125532 A0 IT8125532 A0 IT 8125532A0
Authority
IT
Italy
Prior art keywords
piston pump
rotary piston
pressure balancing
balancing chamber
chamber
Prior art date
Application number
IT8125532A
Other languages
English (en)
Other versions
IT1140114B (it
Inventor
Hermann Lang
Jurgen Steinmuller
Original Assignee
Pfeiffer Vakuumtechnik
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 Pfeiffer Vakuumtechnik filed Critical Pfeiffer Vakuumtechnik
Publication of IT8125532A0 publication Critical patent/IT8125532A0/it
Application granted granted Critical
Publication of IT1140114B publication Critical patent/IT1140114B/it

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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F04C15/0038—Shaft sealings specially adapted for rotary-piston machines or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S418/00—Rotary expansible chamber devices
    • Y10S418/01—Non-working fluid separation

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Rotary Pumps (AREA)
IT25532/81A 1980-12-18 1981-12-11 Pompa a pistone rotante con camera equilibratrice di pressione IT1140114B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803047699 DE3047699A1 (de) 1980-12-18 1980-12-18 Waelzkolbenpumpe mit druckausgleichskammer

Publications (2)

Publication Number Publication Date
IT8125532A0 true IT8125532A0 (it) 1981-12-11
IT1140114B IT1140114B (it) 1986-09-24

Family

ID=6119470

Family Applications (1)

Application Number Title Priority Date Filing Date
IT25532/81A IT1140114B (it) 1980-12-18 1981-12-11 Pompa a pistone rotante con camera equilibratrice di pressione

Country Status (10)

Country Link
US (1) US4465442A (it)
JP (1) JPS57140590A (it)
BE (1) BE891326A (it)
CH (1) CH656676A5 (it)
DE (1) DE3047699A1 (it)
FR (1) FR2496776B1 (it)
GB (1) GB2089892B (it)
IT (1) IT1140114B (it)
MX (1) MX153548A (it)
NL (1) NL8105570A (it)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3344953A1 (de) * 1983-12-13 1985-06-20 Leybold-Heraeus GmbH, 5000 Köln Zweiwellen-vakuumpumpe mit getrieberaum-evakuierung
JPS60222583A (ja) * 1984-04-20 1985-11-07 Hitachi Ltd スクリユ−真空ポンプ
JPS615390U (ja) * 1984-06-15 1986-01-13 トヨタ自動車株式会社 ル−ツポンプ
US4737087A (en) * 1984-12-10 1988-04-12 Barmag Ag Drive shaft seal for gear pump and method
JPS61192590U (it) * 1985-05-24 1986-11-29
GB8513684D0 (en) * 1985-05-30 1985-07-03 Boc Group Plc Mechanical pumps
US4674960A (en) * 1985-06-25 1987-06-23 Spectra-Physics, Inc. Sealed rotary compressor
JPS62174592A (ja) * 1985-10-12 1987-07-31 Kobe Steel Ltd スクリユ式真空ポンプ
JPS62228693A (ja) * 1986-03-31 1987-10-07 Aisin Seiki Co Ltd ル−ツブロア
JPH0338473Y2 (it) * 1986-04-25 1991-08-14
JPS62261689A (ja) * 1986-05-09 1987-11-13 Kobe Steel Ltd スクリユ式真空ポンプ
DE8703108U1 (de) * 1987-02-28 1988-03-31 Leybold AG, 5000 Köln Vakuumpumpe mit einer Einrichtung zur Drehzahlmessung
JPS6429690A (en) * 1987-07-22 1989-01-31 Hitachi Ltd Shaft sealing device for screw vacuum pump
FR2638788B1 (fr) * 1988-11-07 1994-01-28 Alcatel Cit Pompe a vide du type roots multietage
US5046839A (en) * 1990-07-30 1991-09-10 Locker Enterprises, Inc. Golf course range finder system
DE4238271A1 (de) * 1992-11-13 1994-05-19 Leybold Ag Zweiwellenvakuumpumpe
JP2537766B2 (ja) * 1992-12-25 1996-09-25 オリオン機械株式会社 回転ベ―ンポンプ
WO1998058199A1 (en) * 1997-06-16 1998-12-23 Garlock Inc. Split sealing element
US5916139A (en) * 1997-09-16 1999-06-29 My-D Han-D Mfg. Co. Inc. Hydraulic system and pump
DE10306547B4 (de) * 2003-02-17 2005-08-04 Aerzener Maschinenfabrik Gmbh Drehkolbenmaschine
JP5389833B2 (ja) * 2011-01-11 2014-01-15 アネスト岩田株式会社 ２軸式ロータポンプ
WO2015006325A1 (en) * 2013-07-08 2015-01-15 Schlumberger Canada Limited Pressure equalizers for shaft seals of a downhole gearbox
KR102027219B1 (ko) * 2018-12-24 2019-10-01 주식회사 백콤 내부점검과 이물질 제거기능을 갖는 수봉식 진공펌프

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB241323A (en) * 1924-08-05 1925-10-22 Justus Royal Kinney Improvements in rotary pumps
US1696882A (en) * 1925-12-16 1928-12-25 Connersville Blower Co Blower
US2115325A (en) * 1936-12-04 1938-04-26 Speedry Gravure Corp Pump for ink circulating systems
GB559226A (en) * 1942-08-07 1944-02-09 Douglas Rudolf Pobjoy Improvements in and relating to rotary pumps
GB559729A (en) * 1942-09-14 1944-03-02 Frederick George Horstmann Improvements in and relating to rotary pumps
US2495601A (en) * 1945-08-31 1950-01-24 Rite Way Products Company Pump oiling means
US2496676A (en) * 1946-11-12 1950-02-07 Rite Way Products Company Vacuum pump
US2642808A (en) * 1948-05-17 1953-06-23 Waterous Co Sanitary pump
GB680001A (en) * 1948-10-12 1952-10-01 Edwards & Co London Ltd W Improvements in or relating to the production of vacua
US2785851A (en) * 1951-06-11 1957-03-19 U B I S P A Utilizzo Brevetti Pump and/or rotative compressor with prismatic pistons
US2903970A (en) * 1955-03-24 1959-09-15 United Aircraft Corp Combination seal for a pump
US3292847A (en) * 1964-11-03 1966-12-20 Dresser Ind Lubricant sealing means for rotary positive displacement pump
US3556697A (en) * 1969-04-10 1971-01-19 Ingersoll Rand Co Sealing arrangement for vacuum pump
US3919854A (en) * 1973-03-14 1975-11-18 Technip Cie Gas sealing assembly
GB1484994A (en) * 1973-09-03 1977-09-08 Svenska Rotor Maskiner Ab Shaft seal system for screw compressors
FR2249568A5 (en) * 1973-10-26 1975-05-23 Cit Alcatel Roots pump for vacuum technology - connecting lines between bearing box and pump chamber contains oil vapour trap
DE2700226C2 (de) * 1977-01-05 1985-04-04 Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh, 6334 Asslar Drehkolbengebläse oder -vakuumpumpe
DE2725299A1 (de) * 1977-06-04 1978-12-14 Leybold Heraeus Gmbh & Co Kg Waelzkolbenpumpe oder -verdichter
JPS5462518A (en) * 1977-10-28 1979-05-19 Anlet Kk Roots compressor for gas
JPS5471410A (en) * 1977-11-16 1979-06-08 Kobe Steel Ltd A closed,no-oil-supply type screw compressor

Also Published As

Publication number Publication date
DE3047699A1 (de) 1982-07-01
IT1140114B (it) 1986-09-24
JPH0258476B2 (it) 1990-12-07
BE891326A (fr) 1982-03-31
FR2496776B1 (fr) 1987-12-11
GB2089892A (en) 1982-06-30
US4465442A (en) 1984-08-14
GB2089892B (en) 1984-08-15
FR2496776A1 (fr) 1982-06-25
CH656676A5 (de) 1986-07-15
NL8105570A (nl) 1982-07-16
MX153548A (es) 1986-11-12
JPS57140590A (en) 1982-08-31

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19931222