Global Patent Index - EP 1259737 A1

EP 1259737 A1 2002-11-27 - CONTROL DEVICE FOR POSITIVE DISPLACEMENT PUMPS

Title (en)

CONTROL DEVICE FOR POSITIVE DISPLACEMENT PUMPS

Title (de)

REGELEINRICHTUNG FÜR VERDRÄNGERPUMPEN

Title (fr)

DISPOSITIF DE REGULATION POUR POMPES VOLUMETRIQUES

Publication

EP 1259737 A1 (DE)

Application

EP 01902363 A

Priority

  • DE 10006140 A
  • EP 0100955 W

Abstract (en)

[origin: WO0159301A1] The invention relates to a control device for positive displacement pumps, consisting of a throttle device (20) and a flow control valve (18). The flow control valve (18) is provided with a flow control piston (21) and regulates an unrequired excess flow to the pump at an increased speed. The throttle device (20) produces a speed-related pressure differential in a bore section (17A), said pressure differential being responsible for the displacement of the flow control valve (18) and the throttle device (20). The throttle device (20) is placed in the pressure outlet (bore section 17A) of the pump and contains a regulating pin (27) which is connected to the flow control piston (21), having a control contour which is embodied in such a way that a modifiable through cross-section is created in association with a throttle bore (28). The control pin (27) has a wider section (34) in an axial displacement area of the throttle device (20), said area not being involved in control of the volume flow, whereby a minimum obturating section arises in the displacement area. This results in accelerated movement of the flow control piston (21), which in turn results in quicker reaction of the control mechanism, thereby preventing an overshoot and overincrease in the flow capacity.

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

F04C 15/00; F04C 2/344; F04C 15/02; F04C 15/04

IPC 8 full level (invention and additional information)

F04C 2/344 (2006.01); F04C 14/26 (2006.01); F04C 15/00 (2006.01); F04C 15/06 (2006.01)

CPC (invention and additional information)

F04C 15/062 (2013.01); F04C 14/26 (2013.01); F04C 15/00 (2013.01)

Citation (search report)

See references of WO 0159301A1

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

WO 0159301 A1 20010816; DE 10006140 A1 20010816; EP 1259737 A1 20021127; EP 1259737 B1 20040107; ES 2213685 T3 20040901; JP 2003522884 A 20030729; US 2003113216 A1 20030619; US 7059838 B2 20060613

INPADOC legal status


2015-10-30 [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: 20150801

2015-08-01 [REG DE R119] APPLICATION DEEMED WITHDRAWN, OR IP RIGHT LAPSED, DUE TO NON-PAYMENT OF RENEWAL FEE

- Document: DE 50101292

2015-06-03 [REG DE R081] CHANGE OF APPLICANT/PATENTEE

- Owner name: ROBERT BOSCH AUTOMOTIVE STEERING GMBH, DE

- Free text: FORMER OWNER: ZF LENKSYSTEME GMBH, 73527 SCHWAEBISCH GMUEND, DE

- Document: DE 50101292

- Effective date: 20150423

2014-04-30 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: DE

- Payment date: 20140122

- Year of fee payment: 14

2008-07-31 [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 NON-PAYMENT OF DUE FEES

- Effective date: 20070131

2008-04-30 [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: 20070131

2008-04-16 [REG ES FD2A] ANNOUNCEMENT OF LAPSE IN SPAIN

- Effective date: 20070131

2007-11-24 [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: 20070130

2007-11-09 [REG FR ST] NOTIFICATION OF LAPSE

- Effective date: 20070930

2007-09-26 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20070130

2006-01-20 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: FR

- Payment date: 20060120

- Year of fee payment: 6

2006-01-16 [PGFP ES] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: ES

- Payment date: 20060116

- Year of fee payment: 6

2006-01-10 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: GB

- Payment date: 20060110

- Year of fee payment: 6

2004-12-29 [26N] NO OPPOSITION FILED

- Effective date: 20041008

2004-10-22 [ET] FR: TRANSLATION FILED

2004-09-01 [REG ES FG2A] DEFINITIVE PROTECTION

- Document: ES 2213685 T3

2004-08-25 [REG IE FD4D] EUROPEAN PATENTS DESIGNATING IRELAND TREATED AS ALWAYS HAVING BEEN VOID

2004-03-24 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20040303

2004-02-12 [REF] CORRESPONDS TO:

- Document: DE 50101292 P 20040212

2004-02-11 [REG IE FG4D] EUROPEAN PATENTS GRANTED DESIGNATING IRELAND

- Free text: GERMAN

2004-01-07 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE ES FR GB

2004-01-07 [REG GB FG4D] EUROPEAN PATENT GRANTED

- Free text: NOT ENGLISH

2002-11-27 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020904

2002-11-27 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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