JPS57500840A - - Google Patents
Info
- Publication number
- JPS57500840A JPS57500840A JP81500586A JP50058681A JPS57500840A JP S57500840 A JPS57500840 A JP S57500840A JP 81500586 A JP81500586 A JP 81500586A JP 50058681 A JP50058681 A JP 50058681A JP S57500840 A JPS57500840 A JP S57500840A
- Authority
- JP
- Japan
- Legal status (The legal status 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 status listed.)
- Pending
Links
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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
- F15B13/0422—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with manually-operated pilot valves, e.g. joysticks
-
- 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
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/004—Fluid pressure supply failure
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/365—Directional control combined with flow control and pressure control
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
- F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/67—Methods for controlling pilot pressure
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/77—Control of direction of movement of the output member
- F15B2211/7708—Control of direction of movement of the output member in one direction only
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
- F15B2211/863—Control during or prevention of abnormal conditions the abnormal condition being a hydraulic or pneumatic failure
- F15B2211/8633—Pressure source supply failure
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Multiple-Way Valves (AREA)
- Fluid-Pressure Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US1980/000764 WO1981003685A1 (en) | 1980-06-16 | 1980-06-16 | Pressure reducing valve for dead engine lowering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57500840A true JPS57500840A (hu) | 1982-05-13 |
Family
ID=22154398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP81500586A Pending JPS57500840A (hu) | 1980-06-16 | 1980-06-16 |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0056369B1 (hu) |
| JP (1) | JPS57500840A (hu) |
| BE (1) | BE888846A (hu) |
| BR (1) | BR8009083A (hu) |
| DE (1) | DE3070963D1 (hu) |
| IT (1) | IT1189023B (hu) |
| MX (1) | MX153904A (hu) |
| SG (1) | SG17387G (hu) |
| WO (1) | WO1981003685A1 (hu) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2557218B1 (fr) * | 1983-12-21 | 1988-01-15 | Bennes Marrel | Emetteur hydraulique de commande a distance avec amplificateurs de debit |
| US5558127A (en) * | 1992-10-09 | 1996-09-24 | Kabushiki Kaisha Komatsu Seisakusho | Hydraulic pilot valve |
| US5433249A (en) * | 1993-08-17 | 1995-07-18 | Kubota Corporation | Hydraulic pilot valve |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1939293A1 (de) * | 1969-08-01 | 1971-02-11 | Kracht Pumpen Motoren | Druckregler |
| US3620129A (en) * | 1970-07-15 | 1971-11-16 | Gen Signal Corp | Hydraulic power circuit with emergency lowering provisions |
| DE2152133B1 (de) * | 1971-10-20 | 1973-02-22 | Rexroth Gmbh G L | Hydraulisch betaetigtes steuerventil |
| US3935792A (en) * | 1973-02-26 | 1976-02-03 | Caterpillar Tractor Co. | Pilot pump bleed control for earthmoving scrapers |
| FR2236101A1 (en) * | 1973-07-05 | 1975-01-31 | Sigma Diesel | Hydraulic actuator arm - spring system and valve ports gives balance and sense of feel to operator |
| US3840049A (en) * | 1973-08-08 | 1974-10-08 | Caterpillar Tractor Co | Compact fluid motor control system with float position |
| US3987703A (en) * | 1974-08-12 | 1976-10-26 | Caterpillar Tractor Co. | Combined restrictor and dead engine lowering valve |
| FR2376978A1 (fr) * | 1977-01-06 | 1978-08-04 | Rexroth Sigma | Perfectionnements aux dispositifs distributeurs de fluide, notamment pour telecommande hydraulique |
-
1980
- 1980-06-16 JP JP81500586A patent/JPS57500840A/ja active Pending
- 1980-06-16 EP EP81900355A patent/EP0056369B1/en not_active Expired
- 1980-06-16 BR BR8009083A patent/BR8009083A/pt unknown
- 1980-06-16 DE DE8181900355T patent/DE3070963D1/de not_active Expired
- 1980-06-16 WO PCT/US1980/000764 patent/WO1981003685A1/en active IP Right Grant
- 1980-06-16 MX MX187594A patent/MX153904A/es unknown
-
1981
- 1981-05-19 BE BE1/10224A patent/BE888846A/nl not_active IP Right Cessation
- 1981-06-15 IT IT22313/81A patent/IT1189023B/it active
-
1987
- 1987-02-20 SG SG173/87A patent/SG17387G/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| MX153904A (es) | 1987-02-16 |
| WO1981003685A1 (en) | 1981-12-24 |
| EP0056369B1 (en) | 1985-08-07 |
| BE888846A (nl) | 1981-11-19 |
| EP0056369A1 (en) | 1982-07-28 |
| SG17387G (en) | 1987-07-24 |
| BR8009083A (pt) | 1982-04-27 |
| IT1189023B (it) | 1988-01-28 |
| DE3070963D1 (en) | 1985-09-12 |
| IT8122313A0 (it) | 1981-06-15 |
| EP0056369A4 (en) | 1983-10-06 |