ZA902648B - Load responsive flow amplified control system - Google Patents
Load responsive flow amplified control systemInfo
- Publication number
- ZA902648B ZA902648B ZA902648A ZA902648A ZA902648B ZA 902648 B ZA902648 B ZA 902648B ZA 902648 A ZA902648 A ZA 902648A ZA 902648 A ZA902648 A ZA 902648A ZA 902648 B ZA902648 B ZA 902648B
- Authority
- ZA
- South Africa
- Prior art keywords
- control system
- load responsive
- amplified control
- responsive flow
- flow amplified
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/09—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by means for actuating valves
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/2496—Self-proportioning or correlating systems
- Y10T137/2544—Supply and exhaust type
- Y10T137/2554—Reversing or 4-way valve systems
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87169—Supply and exhaust
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Flow Control (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/346,965 US4914913A (en) | 1989-05-03 | 1989-05-03 | Load responsive flow amplified control system for power steering |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA902648B true ZA902648B (en) | 1991-01-30 |
Family
ID=23361775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA902648A ZA902648B (en) | 1989-05-03 | 1990-04-05 | Load responsive flow amplified control system |
Country Status (8)
Country | Link |
---|---|
US (1) | US4914913A (xx) |
EP (1) | EP0427791B1 (xx) |
JP (1) | JP2766538B2 (xx) |
AU (1) | AU625916B2 (xx) |
BR (1) | BR8907551A (xx) |
DE (1) | DE68926456T2 (xx) |
WO (1) | WO1990013466A1 (xx) |
ZA (1) | ZA902648B (xx) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE58902305D1 (de) * | 1988-06-15 | 1992-10-22 | Zahnradfabrik Friedrichshafen | Allrad-lenkanlage fuer kraftfahrzeuge. |
EP0477370B2 (en) * | 1990-01-11 | 1998-11-04 | Hitachi Construction Machinery Co., Ltd. | Hydraulic valve apparatus |
DE4126845C2 (de) * | 1991-08-14 | 1994-02-17 | Danfoss As | Hydraulische Lenkeinrichtung für Fahrzeuge |
DE4126846C1 (xx) * | 1991-08-14 | 1993-02-25 | Danfoss A/S, Nordborg, Dk | |
US5546750A (en) * | 1992-07-03 | 1996-08-20 | Rexroth-Sigma | Hydraulic circuit for pressure-controlling a hydraulic distributor of the open-center type |
US5520262A (en) * | 1995-04-28 | 1996-05-28 | Caterpillar Inc. | Electrohydraulic steering system |
IT1280908B1 (it) * | 1995-08-11 | 1998-02-11 | Dayco Europe Spa | Impianto di idroguida per un veicolo |
US5904222A (en) * | 1996-11-06 | 1999-05-18 | Ford Motor Company | Variable assist power steering using vehicle speed and steering pressure |
US5934406A (en) * | 1997-05-29 | 1999-08-10 | Caterpillar Inc. | Jerk control valve for pilot operated steering system |
DE19834955B4 (de) * | 1998-08-03 | 2008-02-07 | Linde Material Handling Gmbh | Hydrostatisches Antriebssystem |
US6568499B2 (en) * | 2000-11-21 | 2003-05-27 | Unisia Jecs Corporation | Power steering system for vehicles |
US6880668B2 (en) * | 2001-05-17 | 2005-04-19 | Hitachi, Ltd. | Power steering device |
US7306071B2 (en) * | 2002-04-25 | 2007-12-11 | Bosch Rexroth Ag | Hydraulic steering apparatus |
US6782698B2 (en) * | 2002-09-26 | 2004-08-31 | Eaton Corporation | Steering control unit with low null band load sensing boost |
FR2918029B1 (fr) * | 2007-06-27 | 2009-11-20 | Renault Sas | Circuit hydraulique d'actionnement de direction assistee et vehicule automobile muni de celui-ci. |
CN101255880B (zh) * | 2007-12-10 | 2010-06-02 | 兰州理工大学 | 中位卸荷型流量放大阀 |
CN104029722B (zh) * | 2014-01-23 | 2016-09-07 | 广西柳工机械股份有限公司 | 工程机械液压转向系统 |
US9878737B2 (en) | 2015-02-20 | 2018-01-30 | Caterpillar Inc. | Hydraulic steering control system |
DE102016002555A1 (de) * | 2016-03-04 | 2017-09-07 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Vorrichtung und Verfahren zum Aufrechterhalten eines erzeugten hydraulischen Druckes |
US11540942B2 (en) * | 2018-07-26 | 2023-01-03 | Alcon Inc. | Redundant pneumatic circuit for reliability enhancement of vitrectomy instruments |
US11318988B2 (en) | 2019-01-14 | 2022-05-03 | Caterpillar Inc. | Hydraulic steering control system |
US11591017B2 (en) * | 2020-07-06 | 2023-02-28 | Deere & Company | Pilot neutralizing system |
US11926992B2 (en) * | 2020-07-06 | 2024-03-12 | Deere & Company | Pilot neutralizing system |
US20230017953A1 (en) * | 2021-07-19 | 2023-01-19 | Caterpillar Inc. | Hoist System Counterbalance Valve Signal Shutoff |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3566749A (en) * | 1968-03-13 | 1971-03-02 | Caterpillar Tractor Co | Hydraulic flow amplifier valve |
DE2305835A1 (de) * | 1973-02-07 | 1974-08-15 | Danfoss As | Hydraulische steuereinrichtung, insbesondere lenkeinrichtung |
DE2728004C2 (de) * | 1977-06-22 | 1981-10-08 | Danfoss A/S, 6430 Nordborg | Hydraulische Steuervorrichtung für einen Servomotor, insbesondere für Fahrzeuglenkungen |
DE2932847C2 (de) * | 1979-08-14 | 1982-05-13 | Danfoss A/S, 6430 Nordborg | Hydraulische Steuervorrichtung für einen Servomotor, insbesondere für Fahrzeuglenkungen |
US4311006A (en) * | 1979-10-29 | 1982-01-19 | General Signal Corporation | Pressure compensated steering system |
DE3146302C1 (de) * | 1981-11-23 | 1982-12-09 | Danfoss A/S, 6430 Nordborg | Hydraulische Steuervorrichtung fuer einen Servomotor |
JPH0775985B2 (ja) * | 1984-12-10 | 1995-08-16 | 石炭露天掘機械技術研究組合 | 車両の液圧操向装置 |
US4640094A (en) * | 1986-02-04 | 1987-02-03 | Deere & Company | Flow amplifying steering system |
US4759182A (en) | 1987-07-24 | 1988-07-26 | Eaton Corporation | Steering control unit with flow amplification |
-
1989
- 1989-05-03 US US07/346,965 patent/US4914913A/en not_active Expired - Lifetime
- 1989-08-11 DE DE68926456T patent/DE68926456T2/de not_active Expired - Fee Related
- 1989-08-11 AU AU42130/89A patent/AU625916B2/en not_active Ceased
- 1989-08-11 JP JP1509335A patent/JP2766538B2/ja not_active Expired - Lifetime
- 1989-08-11 BR BR898907551A patent/BR8907551A/pt unknown
- 1989-08-11 WO PCT/US1989/003430 patent/WO1990013466A1/en active IP Right Grant
- 1989-08-11 EP EP89910242A patent/EP0427791B1/en not_active Expired - Lifetime
-
1990
- 1990-04-05 ZA ZA902648A patent/ZA902648B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
BR8907551A (pt) | 1991-06-18 |
DE68926456T2 (de) | 1997-01-02 |
EP0427791A4 (en) | 1993-08-18 |
AU4213089A (en) | 1990-11-29 |
JPH04501093A (ja) | 1992-02-27 |
DE68926456D1 (de) | 1996-06-13 |
EP0427791A1 (en) | 1991-05-22 |
WO1990013466A1 (en) | 1990-11-15 |
EP0427791B1 (en) | 1996-05-08 |
JP2766538B2 (ja) | 1998-06-18 |
AU625916B2 (en) | 1992-07-16 |
US4914913A (en) | 1990-04-10 |
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