Global Patent Index - EP 1160451 A2

EP 1160451 A2 2001-12-05 - Piston pump

Title (en)

Piston pump

Title (de)

Kolbenpumpe

Title (fr)

Pompe à piston

Publication

EP 1160451 A2 (DE)

Application

EP 01113234 A

Priority

DE 20009848 U

Abstract (en)

A section of the pump's piston which protrudes into the working chamber(13) has an extension(19) with smaller diameter and which by a shoulder(21) is connected to the end face of the piston. The extension has thickened free piston end with a sealing face(23) facing the shoulder. At least one valve disc(26) is provided between the shoulder and sealing face and is guided in the working chamber and with an axial thickness which is smaller than the distance between the sealing face and shoulder so that the valve disc is axially movable to and fro on the extension.

Abstract (de)

Die Erfindung betrifft eine Kolbenpumpe mit einem Kolben, der mit seiner Stirnfläche und einem Pumpenzylinder einen Arbeitsraum begrenzt, der über Rückschlagventile mit einem Hydraulikmediumsvorrat und mit einem Arbeitszylinder verbunden ist, welcher Kolben entgegen der Kraft einer Feder axial hin- und herberwegbar ist. Gemäß der Erfindung wird vorgeschlagen, daß der in den Arbeitsraum hineinragende Abschnitt des Kolbens mit einem Fortsatz mit geringerem Durchmesser versehen ist, der sich über einen Absatz an die Stirnfläche des Kolbens anschließt und der ein verdicktes freies Kolbenende mit einer dem Absatz zugewandten Dichtfläche aufweist, daß zwischen dem Absatz und der Dichtfläche wenigstens eine Ventilscheibe vorhanden ist, die dichtend in dem Pumpenzylinder geführt und durch die die Verbindung des Arbeitsraums zum Rückschlagventil verschließbar ist und die eine axiale Dicke aufweist, die kleiner ist als der Abstand zwischen der Dichtfläche und dem Absatz, so daß die Ventilscheibe zwischen dem Absatz und der Dichtfläche axial hin- und herbewegbar ist, wobei die Ventilscheibe mit wenigstens einer Durchbrechung versehen ist, durch die der Arbeitsraum mit dem zweiten Rückschlagventil verbindbar ist und die bei der Anlage der Ventilscheibe an der Dichtfläche geschlossen ist. <IMAGE>

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

F04B 53/12

IPC 8 full level (invention and additional information)

F04B 53/12 (2006.01)

CPC (invention and additional information)

F04B 53/122 (2013.01)

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 1160451 A2 20011205; EP 1160451 A3 20030618; EP 1160451 B1 20040804; AT 272795 T 20040815; US 2002015649 A1 20020207; US 6499974 B2 20021231

INPADOC legal status


2013-06-28 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: DE

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20111130

2011-12-01 [REG DE R119] APPLICATION DEEMED WITHDRAWN, OR IP RIGHT LAPSED, DUE TO NON-PAYMENT OF RENEWAL FEE

- Document: DE 50103070

2011-11-30 [REG DE R119] APPLICATION DEEMED WITHDRAWN, OR IP RIGHT LAPSED, DUE TO NON-PAYMENT OF RENEWAL FEE

- Document: DE 50103070

2011-03-31 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: IT

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20100530

2010-11-30 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: DE

- Payment date: 20100709

- Year of fee payment: 10

2009-08-31 [PGFP IT] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: IT

- Payment date: 20090528

- Year of fee payment: 9

2009-06-30 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: GB

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20080530

2009-04-30 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: FR

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20080602

2009-02-27 [REG FR ST] NOTIFICATION OF LAPSE

- Effective date: 20090119

2009-01-30 [PG25 CH] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: CH

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20080531

2009-01-30 [PG25 LI] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: LI

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20080531

2009-01-28 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20080530

2008-12-31 [REG CH PL] PATENT CEASED

2008-04-30 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: FR

- Payment date: 20070529

- Year of fee payment: 7

2008-01-02 [PG25 PT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: PT

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20050104

2007-12-31 [BERE] BE: LAPSED

- Owner name: *HOLGER CLASEN K.G. (G.M.B.H. & CO.)

- Effective date: 20050531

2007-11-24 [PGFP CH] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: CH

- Payment date: 20070724

- Year of fee payment: 7

2007-11-24 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: GB

- Payment date: 20070425

- Year of fee payment: 7

2005-11-30 [BERE] BE: LAPSED

- Owner name: *HOLGER CLASEN K.G. (G.M.B.H. & CO.)

- Effective date: 20050531

2005-07-27 [26N] NO OPPOSITION FILED

- Effective date: 20050506

2005-05-31 [PG25 BE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: BE

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20050531

2005-05-31 [PG25 MC] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: MC

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20050531

2005-05-30 [PG25 AT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: AT

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20050530

2005-05-30 [PG25 LU] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: LU

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20050530

2005-05-30 [PG25 CY] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: CY

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20050530

2005-05-27 [ET] FR: TRANSLATION FILED

2005-03-23 [REG IE FD4D] EUROPEAN PATENTS DESIGNATING IRELAND TREATED AS ALWAYS HAVING BEEN VOID

2005-01-03 [NLV1] NL: LAPSED OR ANNULLED DUE TO FAILURE TO FULFILL THE REQUIREMENTS OF ART. 29P AND 29M OF THE PATENTS ACT

2004-11-15 [REG CH NV] NEW AGENT

- Representative's name: TROESCH SCHEIDEGGER WERNER AG

2004-11-15 [PG25 ES] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: ES

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20041115

2004-11-04 [PG25 DK] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: DK

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20041104

2004-11-04 [PG25 GR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: GR

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20041104

2004-11-04 [PG25 SE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: SE

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20041104

2004-09-09 [REF] CORRESPONDS TO:

- Document: DE 50103070 P 20040909

2004-09-08 [REG IE FG4D] EUROPEAN PATENTS GRANTED DESIGNATING IRELAND

- Free text: GERMAN

2004-09-01 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20040805

2004-08-13 [REG CH EP] ENTRY IN THE NATIONAL PHASE

2004-08-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

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

2004-08-04 [REG GB FG4D] EUROPEAN PATENT GRANTED

- Free text: NOT ENGLISH

2004-08-04 [PG25 FI] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: FI

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20040804

2004-08-04 [PG25 IE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: IE

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20040804

2004-08-04 [PG25 NL] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: NL

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20040804

2004-08-04 [PG25 TR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: TR

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20040804

2004-08-04 [RAP1] TRANSFER OF RIGHTS OF AN APPLICATION

- Owner name: HOLGER CLASEN KG (GMBH & CO.)

2004-03-10 [AKX] PAYMENT OF DESIGNATION FEES

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

2004-01-28 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20031128

2003-06-18 [AK] DESIGNATED CONTRACTING STATES:

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

2003-06-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Countries: AL LT LV MK RO SI

2001-12-05 [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

2001-12-05 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

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