Global Patent Index - EP 1128069 A3

EP 1128069 A3 2002-11-06 - Gas friction pump

Title (en)

Gas friction pump

Title (de)

Gasreibungspumpe

Title (fr)

Pompe à effet visqueux

Publication

EP 1128069 A3 (DE)

Application

EP 01102552 A

Priority

DE 10008691 A

Abstract (en)

[origin: US2001018018A1] A gas friction pump including a housing having a suction opening and an exhaust opening, main rotor and stator components arranged in the housing and cooperating with each other for delivering gases and for producing a pressure difference, and an auxiliary pumping unit provided at a side of the suction opening and having a gas delivery structure that provides for gas delivery in a radial direction, with the auxiliary pumping unit being formed of at least one stage and having auxiliary rotor and stator components, with the auxiliary rotor components being supported on the shaft which supports the main rotor components.

IPC 1-7 (main, further and additional classification)

F04D 19/04; F04D 17/16

IPC 8 full level (invention and additional information)

F04D 17/16 (2006.01); F04D 19/04 (2006.01); F04D 25/16 (2006.01); F04D 29/44 (2006.01); F04D 29/54 (2006.01)

CPC (invention and additional information)

F04D 17/168 (2013.01); F04D 19/046 (2013.01); F04D 29/321 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

EP 1128069 A2 20010829; EP 1128069 A3 20021106; EP 1128069 B1 20160330; DE 10008691 A1 20010830; DE 10008691 B4 20171026; JP 2001280289 A 20011010; JP 4907774 B2 20120404; US 2001018018 A1 20010830; US 6524060 B2 20030225

INPADOC legal status


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2016-05-12 [REG DE R096] DPMA PUBLICATION OF MENTIONED EP PATENT GRANT

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2016-04-20 [RAP2] TRANSFER OF RIGHTS OF AN EP GRANTED PATENT

- Owner name: PFEIFFER VACUUM GMBH

2016-03-31 [REG CH EP] ENTRY IN THE NATIONAL PHASE

2016-03-30 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

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2016-03-30 [REG GB FG4D] EUROPEAN PATENT GRANTED

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2015-11-11 [INTG] ANNOUNCEMENT OF INTENTION TO GRANT

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2008-07-30 [17Q] FIRST EXAMINATION REPORT

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2003-07-23 [AKX] PAYMENT OF DESIGNATION FEES

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2002-11-06 [AK] DESIGNATED CONTRACTING STATES:

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2002-11-06 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI

2002-11-06 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7F 04D 19/04 A, 7F 04D 17/16 B

2001-10-10 [RTI1] TITLE (CORRECTION)

- Free text: GAS FRICTION PUMP

2001-08-29 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2001-08-29 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI