KR850006049A - Back Pressure Compensation Hydraulic Valve - Google Patents

Back Pressure Compensation Hydraulic Valve Download PDF

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Publication number
KR850006049A
KR850006049A KR1019850000854A KR850000854A KR850006049A KR 850006049 A KR850006049 A KR 850006049A KR 1019850000854 A KR1019850000854 A KR 1019850000854A KR 850000854 A KR850000854 A KR 850000854A KR 850006049 A KR850006049 A KR 850006049A
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KR
South Korea
Prior art keywords
pressure
passage
valve
spool
check valve
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KR1019850000854A
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Korean (ko)
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KR930004681B1 (en
Inventor
에이·윌크 라우드
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제임스 알·무어
코어링 컴패니
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Publication of KR930004681B1 publication Critical patent/KR930004681B1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00Control of fluid pressure
    • G05D16/04Control of fluid pressure without auxiliary power
    • G05D16/10Control of fluid pressure without auxiliary power the sensing element being a piston or plunger
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0416Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor with means or adapted for load sensing
    • F15B13/0417Load sensing elements; Internal fluid connections therefor; Anti-saturation or pressure-compensation valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08Assemblies of units, each for the control of a single servomotor only
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00Control of fluid pressure
    • G05D16/028Controlling a pressure difference

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Multiple-Way Valves (AREA)

Abstract

내용 없음No content

Description

후압력 보상 유압밸브Back Pressure Compensation Hydraulic Valve

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명에 따른 밸브의 축단면도.1 is an axial sectional view of a valve according to the invention.

제2도는 제1도의 밸브의 평면 단면도.2 is a plan sectional view of the valve of FIG.

도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings

2:밸브 4:하우징 6:스풀 8,10:포트 12;통로 14:저장기통로(또는 탱크)2: valve 4: housing 6: spool 8, 10: port 12; passage 14: reservoir passage (or tank)

16,20,22:통로 24:체크밸브 26,28,34:통로 36:체크밸브 38,40;통로 42:감지라인 44:입력 46:유압펌프 48,50,52,54,56:통로 58:체크밸브 60:바닥면 62:상부면 64,66,68,70,72:통로 74;출력 76:통로 78:오리피스 80:하중 82,84:연결라인 86,88:안전밸브 90:중심고정장치.16, 20, 22: passage 24: check valve 26, 28, 34: passage 36: check valve 38, 40; passage 42: sensing line 44: input 46: hydraulic pump 48, 50, 52, 54, 56: passage 58 : Check valve 60: Bottom 62: Top 64, 66, 68, 70, 72: Pass 74: Output 76: Pass 78: Orifice 80: Load 82, 84: Connection line 86, 88: Safety valve 90: Center fixation Device.

Claims (12)

압력보상 유압밸브에 있어서, 작동 포트 수단과 유체연통되는 왕복스풀을 갖는 하우징과, 상기 작동포트 수단으로부터 상기 스풀을 통하여 흐르는 유압 유체에 의해 작동 포트 압력을 감지하여 상기 유체가 상기 스풀을 통과한 우헤 상기 스풀에 걸쳐 고정된 차등압력을 발생시키기는 압력보상수단으로 구성되는 것을 특징으로 하는 압력보상 유압밸브.A pressure-compensated hydraulic valve, comprising: a housing having a reciprocating spool in fluid communication with an actuating port means, and an actuating port pressure being sensed by hydraulic fluid flowing from the actuating port means through the spool, and the fluid passing through the spool. Pressure compensation hydraulic valve characterized in that the pressure compensation means for generating a differential pressure fixed over the spool. 제1항에 있어서, 상기 압력보상수단이 압력보상 체크밸브를 포함하고, 상기 고정된 차등압력을 상기유체가 상기 스풀을 통과한 우헤 압력보상 체크 밸브로 압력을 조절하여 상기 스풀에 걸쳐 발생시키는 것을 특징으로 하는 밸브.2. The pressure compensating means according to claim 1, wherein the pressure compensating means comprises a pressure compensating check valve, and the fixed differential pressure is generated over the spool by regulating the pressure with a Uhe pressure compensating check valve through which the fluid has passed through the spool. Characterized by a valve. 제2항에 있어서, 상기 압력보상 체크밸브가 상기 스풀과 마찬가지로 상기 하우징내에 위치하는 것을 특징으로 하는 밸브.3. A valve according to claim 2, wherein said pressure compensation check valve is located in said housing like said spool. 제3항에 있어서, 상기 하우징이 유입 및 유출작동 포트와 상기 스풀의 조절에 따라 상기 각 작동포트에 선택적으로 연통되는 브리지 통로를 포함하고, 상기 압력보상 체크밸브가 브리지통로 부분에 위치하는 것을 특징으로 하는 밸브.4. The method of claim 3, wherein the housing includes a bridge passage selectively communicating with each of the operation ports according to the adjustment of the inflow and outflow operation ports and the spool, and the pressure compensation check valve is located in the bridge passage portion. Valve. 제2항에 있어서, 상기 압력보상수단이 압력보상 체크밸브와, 작동포트 압력을 상기 압력보상 체크밸브로 전달하고 유압펌프의 송출단의 유압흐름을 상기 하우징의 공급통로로 전달하는 수단으로 구성되는 것을 특징으로 하는 밸브.3. The pressure compensating means according to claim 2, wherein the pressure compensating means comprises a pressure compensating check valve and a means for transmitting an operating port pressure to the pressure compensating check valve and for transferring a hydraulic flow of a discharge end of the hydraulic pump to a supply passage of the housing. Valve characterized in that. 제5항에 있어서, 상기 펌프의 송출단으로부터의 유동압력의 상기 펌프에 입력되는 상기 작동포트의 압력보다 설정된 수치만큼 높고, 상기 하우징이 상기 압력보상체크밸브의 한쪽면과 연통되는 공급기 통로를 포함하고, 상기 작동포트 압력이 상기 압력보상체크밸브의 다른쪽 면에 전달되고, 상기 스풀이 주어진 위치로 이동하였을때 그를 통하여 상기 공급통로로부터의 유압유체를 상기 측정통로로연통시키는 측정통로를 포함하고, 상기 축정통로는 그 전반에 걸쳐 일정한 차등압력을 유지하고, 상기 하우징은 상기 스풀이 목표한 지점에 있을때 상기 스풀을 통해 상기 작동포트와 연통되는 브리지 통로를 포함하고, 상기 공급기 통로가 압력보상 체크밸브가 주어진 위치로 이동하였을때 이에 의해 개방되는 오리피스를 통해 상기 브리지 통로에 연통되어, 상기 압력보상체크밸브의 다른쪽에 연통되는 작동포트의 압력변화에 의해 상기 펌프로부터 상기 공급통로, 공급기통로, 오리피스 및 브리지 통로를 통해 상기 작동포트로 전달되는 유압유체를 균형이 이루어질때까지 증가 또는 감소시키는 것을 특징으로 하는 밸브.6. The apparatus of claim 5, wherein the flow pressure from the discharge end of the pump is higher than a set value of the pressure of the operation port input to the pump, and the housing includes a feeder passage in communication with one side of the pressure compensation check valve. And a measuring passage in which the working port pressure is transmitted to the other side of the pressure compensation check valve, and communicates hydraulic fluid from the supply passage through the measuring passage when the spool moves to a given position. And the shaft passage maintains a constant differential pressure throughout the housing, the housing including a bridge passage communicating with the operating port through the spool when the spool is at a desired point, the feeder passage checking pressure compensation. Communicates to the bridge passage through an orifice that opens when the valve is moved to a given position Increasing the hydraulic fluid delivered from the pump to the operating port through the supply passage, the supply passage, the orifice and the bridge passage by the pressure change of the operating port in communication with the other side of the pressure compensation check valve. Or reduce the valve. 단일체의 압력보상 유입밸브에 있어서, 작동포트수단에 유입유체 연통되는 왕복스풀을 갖는 하우징과, 상기 하우징내에 위치하여 상기 스풀 전반에 걸쳐 고정된 차등압력을 발생시키는 압력보상 수단으로 구성되는 것을 특징으로 하는 방법.A pressure compensating inlet valve of a single body, comprising: a housing having a reciprocating spool in fluid communication with an operating port means, and pressure compensating means located in the housing for generating a fixed differential pressure throughout the spool; How to. 제7항에 있어서, 상기 고정된 차등압력이 유압유체가 상기 스풀을 통과한 후에 압력을 조절하여 상기 스풀 전반에 걸쳐 발생되는 것을 특징으로 하는 밸브.8. The valve of claim 7, wherein said fixed differential pressure is generated throughout said spool by adjusting the pressure after hydraulic fluid has passed through said spool. 제8항에 있어서, 상기 하우징이 유입 및 유출작동포트를 포함하고, 상기 하우징은 또한 상기 스풀을 통해 상기 스풀의 조작에 따라 상기 각 작동포트에 선택적으로 연통되는 브리지 통로를 포함하고, 상기 압력보상수단이 브리지 통로부분에 위치하는 압력보상체크밸브를 포함하고, 작동포트 압력을 상기 압력보상체크밸브에 전달하고 펌프송출단의 유압유체 압력을 상기 하우징내의 공급통로로 전달하는 수단으로 또한 구성되고, 상기 펌프의 송출단으로부터의 유압유체 압력은 상기 펌프의 입력이 되는 상기 작동포트압력보다 설정된 수준만큼 높게 되어 있고, 상기 하우징은 상기 압력보상 체크밸브의 한쪽면과 연동되는 공급기통로를 포함하고, 상기 작동포트압력은 상기 압력보상체크밸브의 다른ㅉ고 면에 가해지고,상기 스풀은 그자체가 주어진 위치로 이동할 때 상기 공급통로로부터 상기 공급기 통로로 그를 통하여 유압유체를 연통시키는 측정통로를 포함하고, 상기 측정통로는 그 전반에 걸쳐 일정한 차등압력이 유지되고, 상기 브리지 통로는 스풀이 그 각각의 목표한 부분으로 이동할 때 상기 각각의 작동포트에 상기 스풀을 통해 연통되고, 상기 공급기 통로는 압력보상 체크밸브가 주어진 위치로 이동할때에 그에 의해 개방되는 오리프스를 통해 상기 브리지 통로에 연통되어, 상기 압력보상체크밸브의 다른쪽 면에 연통된 작동포트의 압력변화에 따라 상기 펌프로부터상기 공급통로,공급기통로, 오리피스 및 브리지통로를 통해 상기 작동포트에 전달되는 유압유체를 균형이 이루어질때까지 증가 또는 감소시키게 되어, 상기 고정된 차등압력이 상기 유체가 상기 스풀을 통과한 후에 상기압력보상체크밸브로 압력을 조절하여 상기 스풀 전반에 걸쳐 유지되게 하고, 상기 하우징이 저장실 통로를 포함하고, 상기 스풀이 그자체가 중립위치에 있을때 상기 브리지 통로를 상기 저장실 통로에 연통시키는 브리지 순환통로를 포함하고, 상기 스풀이 제1초기위치로 이동할 때 상기 브리지 순환통로를 차단하고, 상기 하우징내에 있는 상기 공급통로와 상기 공급기 통로사이의 상기 측정통로를 개방시키지 않으면서 상기 스풀을 통해 상기 각 작동포트로부터 상기 브리지 통로에연결된 통로를 개방시키고, 상기 작동포트 압력은 상기 연통수단에 의해 상기 압력보상 체크밸브의 상기 다른쪽 면에 전달되어 상기 압력보상체크밸브를 초기 가압시키고 이와 동일한 수준의 압력을 상기 체크밸브의 한쪽 면으로부터 상기공급통로에 인가하여, 상기 공급통로와 공급기 통로 사이에 상기 차등압력이 형성되게 하고, 상기 스풀이 더 이동하게 되면 상기 공급통로와 공급기 통로 사이에 있는 측정통로개방되게 되어 상기 고정된 차등압력이 상기 측정통로 전반에 걸쳐 인가되게 하는 것을 특징으로 하는 밸브.The pressure compensation device of claim 8, wherein the housing includes inflow and outflow operation ports, the housing also includes a bridge passage selectively communicating with each operation port through operation of the spool through the spool, and the pressure compensation. The means includes a pressure compensation check valve located in the bridge passage portion, and is also composed of means for transmitting the operating port pressure to the pressure compensation check valve and the hydraulic fluid pressure of the pump delivery end to the supply passage in the housing, The hydraulic fluid pressure from the discharge end of the pump is set to a higher level than the operating port pressure which is the input of the pump, the housing includes a supply passage interlocking with one side of the pressure compensation check valve, The operating port pressure is applied to the other side of the pressure compensation check valve, and the spool itself A measuring passage communicating hydraulic fluid through the supply passage from the supply passage to the feed passage when moved to the position, the measuring passage maintaining a constant differential pressure throughout the bridge passage, the bridge passage having its respective target The feed passage is in communication with the bridge passage through the spool to the respective actuation port when moving in one section, and the feed passage is opened by an orifice opened when the pressure compensation check valve is moved to a given position. Increasing or decreasing hydraulic fluid transferred from the pump to the operating port through the supply passage, supply passage, orifice and bridge passage according to the pressure change of the operating port in communication with the other side of the compensation check valve. The fixed differential pressure is increased after the fluid has passed through the spool. The pressure compensation check valve regulates the pressure to be maintained throughout the spool, wherein the housing includes a reservoir passage, and the bridge passage communicates the bridge passage with the reservoir passage when the spool itself is in a neutral position. Each operation through the spool without interrupting the bridge circulation passage when the spool is moved to the first initial position and without opening the measurement passage between the feed passage and the feed passage in the housing; Opening a passage connected from the port to the bridge passage, and the actuation port pressure is transmitted by the communication means to the other side of the pressure compensation check valve to initially pressurize the pressure compensation check valve and maintain the same level of pressure. It is applied to the supply passage from one side of the check valve, The differential pressure is formed between the supply passage and the feeder passage, and when the spool is moved further, the measurement passage is opened between the supply passage and the feeder passage so that the fixed differential pressure is applied throughout the measuring passage. The valve characterized in that. 다수의 작동포트를 갖는 복수부분으로 구성된 압력보상 유압밸브에 있어서, 각 밸브부분이 유입 및 유출작동포트를 갖는 하우징과, 상기 하우징내에서 왕복이동하여 유압유체를 상기 각 작동포트에 연동시키는 스풀과, 다수의 밸브부분의 가장 높은 작동포트 압력을 감지하여 유압유체가 스풀을 통과한 후에 압력을 조절함으로써 실질적으로 구정된 차등압력을 발생시키는 압력보상 수단으로 구성되는 것을 특징으로 하는 압력보상 유압밸브.A pressure compensated hydraulic valve composed of a plurality of parts having a plurality of operating ports, each valve portion having a inlet and an outlet operation port, and a spool reciprocating in the housing to link the hydraulic fluid to the respective operation ports; And pressure compensating means for sensing the highest operating port pressure of the plurality of valve parts and generating a substantially prescribed differential pressure by adjusting the pressure after the hydraulic fluid passes through the spool. 제10항에 있어서, 상기 압력보상수단이 각 밸브부분에 있는 압력보상체크밸브와, 가장 높은 작동포트 압력을상기 각 압력보상체크밸브에 전달하고 상기 가장 높은 작동포트 압력에 비해 설정된 수준만큼 높은 압력을 갖는 펌프송출단의 유압유체를 상기 하우징내의 공급통로에 전달하는 셔틀수단으로 구성되는 것을 특징으로 하는 밸브.The pressure compensating means according to claim 10, wherein the pressure compensating means transmits the pressure compensating check valve in each valve portion and the highest working port pressure to each of the pressure compensating check valves and is set to a level higher than the highest working port pressure. A valve, characterized in that consisting of a shuttle means for delivering a hydraulic fluid of the pump sending end having a supply passage in the housing. 제11항에 있어서, 상기 각 하우징이 상기 압력보상체크밸브의 한쪽면에 연통되는 공급기 통로를 포함하고, 상기 작동포트압력이 상기 압력보상체크밸브의 다른쪽 면에 인가되고, 상기 스풀은 스풀이 주어진 위치로 이동할 때 그를 통하여 상기 공급통로로부터 상기 공급기 통로로 유압유체를 연통시키는 측정통로를 포함하고 상기 측정통로는 그 전반에 걸쳐 일정한 차등압력을 유지하고, 상기 각 하우징은 상기 작동포트를 스풀이 목표한 위치에 있을때 스풀을 통해 연통시키는 브리지 통로를 포함하고, 상기 셔틀수단은 상기 각 브리지 통로와 셔틀체크밸브 사이의 상기 각 밸브 부분내에 있는 감지셔틀 통로와, 그 밸브부분의 상기 셔틀체크밸브와 다음 밸브부분의 셔틀체크밸브 사이에 위치하는 관통셔틀통로를 포함하여, 상기 브리지 통로내의 작동포트 압력이 앞밸브 부분내의 브리지 통로내의 작동포트 압력보다 높을 경우에는 그 밸브 부분의 셔틀체크밸브가 앞밸브 부분의 관통셔틀 통로를 폐쇄하고 그 밸브부분의 감지셔틀 통로를 그밸브부분의 관통셔틀 통로로 개빙시키고, 그 밸브부분의 브리지 통로내의 작동포트압력을 그 밸브 부분의감지셔틀통로를 통해 다음 밸브부분으로 이동시키고, 그 밸브부분의 브리지 통로내의 작동압력이 앞의 밸브부분의 브리지 통로내의 작동포트압력보다 낮을 경우에는 그 밸브부분의 셔틀체크밸브가 그 밸브부분의감지셔틀통로를폐쇄시켜 앞밸브 부분의 작동포트압력이 앞밸브 부분의 관통셔틀밸브를 통해 이동하여 그 밸브부분의 관통셔틀밸브내로 유입되어 다음 밸브부분으로 이동되게 하고, 제일 높은 작동포트압력은 상기 펌프와 상기 밸브 부분들에 있는 상기 압력 보상체크밸브들의 다른쪽 면에 인가되고, 각 밸브 부분내의 상기공급통로는 상기 압력보상 체크밸브가 주어진 위치를이동할 때 이 체크밸브에 의해 개방되는 오리피스를 통해 각 밸브부분내의 상기 브리지 통로와 연통되어, 상기 압력보상체크밸브의 상기 다른쪽면에 연통된 제일 높은 작동포트압력의 변화가 상기 펌프로부터 상기 공급통로, 공급기통로, 오리피스 및 브리지 통로를 통해 상기 작동포트로 전달되는 유압유체를 균형이 이루어질 때까지 증가 또는 감소시키는 것을 특징으로 하는 밸브.12. The pressure compensation check valve of claim 11, wherein each housing includes a feeder passage communicating with one side of the pressure compensation check valve, the operating port pressure is applied to the other side of the pressure compensation check valve, and the spool is A measuring passage communicating hydraulic fluid from said supply passage to said feeder passage when moving to a given position, said measuring passage maintaining a constant differential pressure throughout said housing, said housing being provided with a spool And a bridge passage communicating with the spool when in a desired position, wherein the shuttle means includes a sensing shuttle passage in each valve portion between each bridge passage and the shuttle check valve, and the shuttle check valve in the valve portion. The operation within the bridge passage, including a through shuttle passage located between the shuttle check valve of the next valve portion If the port pressure is higher than the operating port pressure in the bridge passage in the front valve section, the shuttle check valve in the valve section closes the through shuttle passage in the front valve section and the sensing shuttle passage in the valve section opens the through shuttle passage in the valve section. The operating port pressure in the bridge passage of the valve portion is moved to the next valve portion through the sensing shuttle passage of the valve portion, and the operating pressure in the bridge passage of the valve portion is operated in the bridge passage of the previous valve portion. If it is lower than the port pressure, the shuttle check valve of the valve part closes the sensing shuttle passage of the valve part, and the operating port pressure of the front valve part moves through the through shuttle valve of the front valve part, and the through shuttle valve of the valve part. Flows into the next valve section and the highest operating port pressure is applied to the pump and the valve sections. The bridge passage in each valve portion through an orifice which is applied to the other side of the pressure compensation check valves in which the supply passage in each valve portion is opened by this check valve when the pressure compensation check valve is moved to a given position. In communication with the other side of the pressure compensation check valve to balance the hydraulic fluid transferred from the pump to the operating port through the supply passage, the feed passage, the orifice and the bridge passage. Increasing or decreasing until a valve is achieved. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019850000854A 1984-02-13 1985-02-11 Post pressure compensated unitary hydraulic valve KR930004681B1 (en)

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US57939484A 1984-02-13 1984-02-13
US579.394 1984-02-13
US579394 1984-02-13

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AU3849185A (en) 1985-08-22
JPS60188604A (en) 1985-09-26
DE3504744C2 (en) 1993-03-18
DE3504744A1 (en) 1985-08-14
BR8500652A (en) 1985-10-01
FR2559595B1 (en) 1993-11-19
SE463885B (en) 1991-02-04
GB2153979B (en) 1988-01-20
CA1246425A (en) 1988-12-13
GB8503214D0 (en) 1985-03-13
SE8500569L (en) 1985-08-14
FR2559595A1 (en) 1985-08-16
GB2153979A (en) 1985-08-29
KR930004681B1 (en) 1993-06-03
SE8500569D0 (en) 1985-02-07

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