DK170199B1 - Forstærker til hydraulisk styret apparat, med mulighed for manuel styring - Google Patents

Forstærker til hydraulisk styret apparat, med mulighed for manuel styring Download PDF

Info

Publication number: DK170199B1
Authority: DK; Denmark
Prior art keywords: fluid; valve assembly; valve; nozzle; port
Prior art date: 1988-10-06

Application number

DK428289A

Other languages

Danish (da)

English (en)

Other versions

DK428289D0 (da

DK428289A (da

Inventor

Donald Melvin Haarstad

Original Assignee

Eaton Corp

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1988-10-06

Filing date

1989-08-30

Publication date

1995-06-12

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22962808&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DK170199(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1989-08-30 Application filed by Eaton Corp filed Critical Eaton Corp

1989-08-30 Publication of DK428289D0 publication Critical patent/DK428289D0/da

1990-04-07 Publication of DK428289A publication Critical patent/DK428289A/da

1995-06-12 Application granted granted Critical

1995-06-12 Publication of DK170199B1 publication Critical patent/DK170199B1/da

Links

239000012530 fluid Substances 0.000 claims description 159
230000007935 neutral effect Effects 0.000 claims description 34
238000004891 communication Methods 0.000 claims description 20
238000006073 displacement reaction Methods 0.000 claims description 14
230000003321 amplification Effects 0.000 claims description 9
238000003199 nucleic acid amplification method Methods 0.000 claims description 9
239000007788 liquid Substances 0.000 claims description 4
230000001105 regulatory effect Effects 0.000 claims description 3
230000008878 coupling Effects 0.000 claims 1
238000010168 coupling process Methods 0.000 claims 1
238000005859 coupling reaction Methods 0.000 claims 1
238000013016 damping Methods 0.000 description 9
238000010586 diagram Methods 0.000 description 7
238000005259 measurement Methods 0.000 description 7
230000002787 reinforcement Effects 0.000 description 6
238000011144 upstream manufacturing Methods 0.000 description 6
230000007423 decrease Effects 0.000 description 3
238000010276 construction Methods 0.000 description 2
238000001595 flow curve Methods 0.000 description 2
230000002706 hydrostatic effect Effects 0.000 description 2
238000012986 modification Methods 0.000 description 2
230000004048 modification Effects 0.000 description 2
230000003014 reinforcing effect Effects 0.000 description 2
230000001276 controlling effect Effects 0.000 description 1
238000012937 correction Methods 0.000 description 1
230000003247 decreasing effect Effects 0.000 description 1
238000011161 development Methods 0.000 description 1
230000000694 effects Effects 0.000 description 1
230000001939 inductive effect Effects 0.000 description 1
238000000034 method Methods 0.000 description 1
230000000135 prohibitive effect Effects 0.000 description 1

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
- 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
- B62D5/093—Telemotor driven by steering wheel movement
- B62D5/097—Telemotor driven by steering wheel movement gerotor type
- 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
- Y10T137/86493—Multi-way valve unit
- Y10T137/86574—Supply and exhaust
- Y10T137/86638—Rotary valve
- Y10T137/86646—Plug type
- Y10T137/86662—Axial and radial flow
- 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
- Y10T137/87177—With bypass
- Y10T137/87185—Controlled by supply or exhaust valve

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Chemical & Material Sciences (AREA)
Combustion & Propulsion (AREA)
Transportation (AREA)
Physics & Mathematics (AREA)
Fluid Mechanics (AREA)
General Engineering & Computer Science (AREA)
Power Steering Mechanism (AREA)
Flow Control (AREA)

DK428289A 1988-10-06 1989-08-30 Forstærker til hydraulisk styret apparat, med mulighed for manuel styring DK170199B1 (da)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US07/254,067 US4862690A (en)	1988-10-06	1988-10-06	Steering control unit with both flow amplification and manual steering capability
US25406788		1988-10-06

Publications (3)

Publication Number	Publication Date
DK428289D0 DK428289D0 (da)	1989-08-30
DK428289A DK428289A (da)	1990-04-07
DK170199B1 true DK170199B1 (da)	1995-06-12

Family

ID=22962808

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DK428289A DK170199B1 (da)	1988-10-06	1989-08-30	Forstærker til hydraulisk styret apparat, med mulighed for manuel styring

Country Status (6)

Country	Link
US (1)	US4862690A (de)
EP (1)	EP0362534B1 (de)
JP (1)	JP2789043B2 (de)
KR (1)	KR950001409B1 (de)
DE (1)	DE68914077T2 (de)
DK (1)	DK170199B1 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4958493A (en) *	1988-10-06	1990-09-25	Eaton Corporation	Open-center steering control unit with flow amplification
USRE34746E (en) *	1988-10-06	1994-10-04	Eaton Corporation	Open-center steering control unit with flow amplification
US5080135A (en) *	1990-10-24	1992-01-14	Eaton Corporation	Large deflection angle rotary modulation steering valve
US5596498A (en) *	1994-01-14	1997-01-21	Danfoss A/S	Hydraulic steering arrangement for vehicles
ES2121457T3 (es)	1996-11-02	1998-11-16	Hydraulik Nord Gmbh	Mecanismo hidraulico de direccion con variacion de la transmision e intensificacion de corriente.
ES2216324T3 (es)	1997-09-29	2004-10-16	Zf Lemforder Metallwaren Ag	Motor oscilante radial.
US20020179161A1 (en) *	2001-05-30	2002-12-05	Eaton Corporation	Low slip steering system and improved fluid controller therefor
US7283900B1 (en) *	2006-03-14	2007-10-16	Deere & Company	Work vehicle steering system with flow-metering curve selection and associated method
US7913800B2 (en) *	2006-10-30	2011-03-29	Deere & Company	Steering system with variable flow rate amplification ratio and associated method
KR101294406B1 (ko) *	2006-12-04	2013-08-08	두산인프라코어 주식회사	휠로더의 조향 핸들 회전속도 제어장치
CN101255880B (zh) *	2007-12-10	2010-06-02	兰州理工大学	中位卸荷型流量放大阀
US9238479B2 (en) *	2010-05-21	2016-01-19	Eaton Corporation	Steering system with dynamic slip reduction
EP2610140A1 (de)	2011-12-28	2013-07-03	Sauer-Danfoss ApS	Hydraulische Vorrichtung
EP4230504B1 (de) *	2022-02-18	2024-05-01	Danfoss Power Solutions ApS	Hydraulische lenkeinheit

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1755297C3 (de) *	1968-04-23	1979-11-08	Danfoss A/S, Nordborg (Daenemark)	Hydrostatische Hilfskraftlenkeinrichtung, insbesondere für schwere Fahrzeuge
DE1755387C3 (de) *	1968-05-03	1973-11-08	Danfoss A/S, Nordborg (Daenemark)	Hydrostatische Lenkeinrichtung, insbesondere fur schwere Fahrzeuge
US3819307A (en) *	1972-10-24	1974-06-25	Eaton Corp	Stability means for a controller for fluid pressure operated devices
DE2305798C3 (de) *	1973-02-07	1975-09-18	Danfoss A/S, Nordborg (Daenemark)	Hydraulische Steuereinrichtung für einen Servomotor, insbesondere für Fahrzeuglenkungen
US4096883A (en) *	1976-08-24	1978-06-27	Eaton Corporation	Closed-center controller and neutral bypass arrangement therefor
US4167893A (en) *	1978-02-06	1979-09-18	Eaton Corporation	Load sensing valve
US4620416A (en) *	1982-06-14	1986-11-04	Eaton Corporation	Load sensing system
US4576003A (en) *	1982-10-29	1986-03-18	Trw Inc.	Hybrid load-sense vehicle hydrostatic steering system
DE3248638C2 (de) *	1982-12-30	1985-01-03	Danfoss A/S, Nordborg	Hydraulische Steuervorrichtung für einen Servomotor, insbesondere für Fahrzeuglenkungen
DD247421B5 (de) *	1986-03-31	1995-09-21	Hydraulik Nord Gmbh Parchim	Hydrostatische Lenkeinrichtung
DE3789189T2 (de) *	1986-10-10	1994-06-01	Eaton Corp	Flüssigkeitssteuerung und gedämpfter Flüssigkeitsweg.
US4781219A (en) *	1986-10-10	1988-11-01	Eaton Corporation	Fluid controller and dampening fluid path
US4759182A (en) *	1987-07-24	1988-07-26	Eaton Corporation	Steering control unit with flow amplification

1988
- 1988-10-06 US US07/254,067 patent/US4862690A/en not_active Expired - Lifetime
1989
- 1989-08-22 EP EP89115474A patent/EP0362534B1/de not_active Expired - Lifetime
- 1989-08-22 DE DE68914077T patent/DE68914077T2/de not_active Expired - Lifetime
- 1989-08-30 DK DK428289A patent/DK170199B1/da not_active IP Right Cessation
- 1989-09-09 JP JP1234567A patent/JP2789043B2/ja not_active Expired - Lifetime
- 1989-10-06 KR KR1019890014398A patent/KR950001409B1/ko not_active Expired - Lifetime

Also Published As

Publication number	Publication date
EP0362534A3 (en)	1990-12-27
DE68914077D1 (de)	1994-04-28
DE68914077T2 (de)	1994-09-01
JPH02249764A (ja)	1990-10-05
DK428289D0 (da)	1989-08-30
DK428289A (da)	1990-04-07
KR900006692A (ko)	1990-05-08
US4862690A (en)	1989-09-05
EP0362534A2 (de)	1990-04-11
EP0362534B1 (de)	1994-03-23
KR950001409B1 (ko)	1995-02-18
JP2789043B2 (ja)	1998-08-20

Legal Events

Date	Code	Title	Description
1995-06-12	B1	Patent granted (law 1993)
2009-09-14	PUP	Patent expired

Publication	Publication Date	Title
DK169295B1 (da)	1994-10-03	Hydraulisk styreregulator
DK170199B1 (da)	1995-06-12	Forstærker til hydraulisk styret apparat, med mulighed for manuel styring
EP0038542B1 (de)	1984-10-03	Druckmittelbetätigtes Steuergerät
US4535809A (en)	1985-08-20	Hydraulic valve means
US5732789A (en)	1998-03-31	Articulated vehicle steering with bogie feedback
US4665695A (en)	1987-05-19	Hydrostatic load sense steering system
EP0388711B1 (de)	1992-12-02	Steuereinheit für eine Lenkung mit Durchflussverstärkung und offener Mitte
JPS6143227B2 (de)	1986-09-26
GB1591328A (en)	1981-06-17	Closed-centre controller for fluid pressure operated devices
JPH0659835B2 (ja)	1994-08-10	液圧式パワ−ステアリング装置
US4167893A (en)	1979-09-18	Load sensing valve
KR830002279B1 (ko)	1983-10-21	유압식 조향장치
JPS6141784B2 (de)	1986-09-17
US4804016A (en)	1989-02-14	Fluid controller with improved pressure balancing
US5101860A (en)	1992-04-07	Fluid controller and improved check valve arrangement therefor
GB1563915A (en)	1980-04-02	Hydraulic control means
US4558720A (en)	1985-12-17	Closed-center controller for use with unequal area cylinder
USRE34746E (en)	1994-10-04	Open-center steering control unit with flow amplification
DK172121B1 (da)	1997-11-17	Regulator til regulering af væskestrømmen fra en trykkilde til et hydraulisk styret apparat
JPH0624347A (ja)	1994-02-01	流量制御による油圧式パワーステアリング装置
US5609221A (en)	1997-03-11	Steering control system
US3957129A (en)	1976-05-18	Steering system
US5634495A (en)	1997-06-03	Wide angle controller with dual function check valves
JPH035347B2 (de)	1991-01-25
US2977983A (en)	1961-04-04	Selector valve assembly