Global Patent Index - EP 1017942 A1

EP 1017942 A1 2000-07-12 - REGULATING DEVICE FOR AN ADJUSTABLE HYDRAULIC PUMP WITH SEVERAL CONSUMERS

Title (en)

REGULATING DEVICE FOR AN ADJUSTABLE HYDRAULIC PUMP WITH SEVERAL CONSUMERS

Title (de)

REGELEINRICHTUNG FÜR EINE VERSTELLBARE HYDROPUMPE MIT MEHREREN VERBRAUCHERN

Title (fr)

DISPOSITIF DE REGULATION POUR POMPE HYDRAULIQUE A CYLINDREE VARIABLE, COMPORTANT PLUSIEURS CONSOMMATEURS

Publication

EP 1017942 A1 (DE)

Application

EP 98951462 A

Priority

  • DE 19742157 A
  • EP 9806083 W

Abstract (en)

[origin: DE19742157A1] The invention relates to a regulating device for an adjustable hydraulic pump (1). Said device has a delivery flow control valve (15) and an output control valve (27). The delivery flow control valve (15) is subjected to the pressure difference between a first control line (18b) which is connected to the delivery line (5b) downstream of a metering throttle (6b), and a second control line (19) which is connected to the delivery line (5b) upstream of the metering throttle (6b). The delivery flow control valve (15) then regulates the adjusting pressure for an adjusting device (7) according to this pressure difference in order to adjust the delivery volume of the hydraulic pump (1). The output control valve (27) is situated between the first control line (18b) and a pressure medium tank (4). The control pressure in the first control line (18b) acts upon the output control valve (27) in the direction of opening and the adjusting device (7) acts upon the output control valve (27) by means of a spring measurement device (29) in the direction of closing. According to the invention, several consumers, each connected to the hydraulic pump (1) by a separate delivery line (5a-d) in which an adjustable metering throttle is located, can be controlled by the regulating device. A first control line (18a-18d) is connected to the delivery line leading to the designated consumer upstream of the designated metering throttle (6a-6d). A first pressure change device (17, 40, 41) selects the highest of the control pressures in the first lines (18a-18d) and conveys this to the delivery flow control valve (15). The output control valve (27) is only connected to the first control lines (18b, 18d) of the selected, output-controlled consumers, the first control lines (18a, 18c) of the remaining, non output-controlled consumers being separated from the output control valve (27).

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

F04B 49/08

IPC 8 full level (invention and additional information)

F04B 49/08 (2006.01)

CPC (invention and additional information)

F04B 49/08 (2013.01); F04B 2205/061 (2013.01)

Citation (search report)

See references of WO 9915792A1

Designated contracting state (EPC)

DE FR GB IT SE

EPO simple patent family

DE 19742157 A1 19990401; DE 19742157 C2 19990701; CA 2292417 A1 19990401; CA 2292417 C 20071120; EP 1017942 A1 20000712; EP 1017942 B1 20030611; US 6311489 B1 20011106; WO 9915792 A1 19990401

INPADOC legal status


2014-08-29 [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: 20140401

2014-06-26 [REG DE R119] APPLICATION DEEMED WITHDRAWN, OR IP RIGHT LAPSED, DUE TO NON-PAYMENT OF RENEWAL FEE

- Document: DE 59808716

- Effective date: 20140401

2013-08-30 [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: 20120924

2013-08-30 [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: 20121001

2013-07-31 [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: 20120924

2013-06-28 [REG FR ST] NOTIFICATION OF LAPSE

- Effective date: 20130531

2013-05-29 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20120924

2013-04-30 [REG SE EUG] EUROPEAN PATENT HAS LAPSED

2013-04-30 [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 NON-PAYMENT OF DUE FEES

- Effective date: 20120925

2013-01-31 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: DE

- Payment date: 20121122

- Year of fee payment: 15

2011-12-30 [PGFP IT] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: IT

- Payment date: 20110927

- Year of fee payment: 14

2011-11-30 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: FR

- Payment date: 20111005

- Year of fee payment: 14

2011-11-30 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: GB

- Payment date: 20110923

- Year of fee payment: 14

2011-11-30 [PGFP SE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: SE

- Payment date: 20110923

- Year of fee payment: 14

2004-06-02 [26N] NO OPPOSITION FILED

- Effective date: 20040312

2004-03-19 [ET] FR: TRANSLATION FILED

2003-09-30 [REG SE TRGR] TRANSLATION OF GRANTED EP PATENT

2003-07-17 [REF] CORRESPONDS TO:

- Document: DE 59808716 P 20030717

2003-07-02 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

2003-06-11 [AK] DESIGNATED CONTRACTING STATES:

- Designated State(s): DE FR GB IT SE

2003-06-11 [REG GB FG4D] EUROPEAN PATENT GRANTED

- Free text: NOT ENGLISH

2002-09-18 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020801

2000-07-12 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991020

2000-07-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT SE