FR2180754A1 - - Google Patents
Info
- Publication number
- FR2180754A1 FR2180754A1 FR7313030A FR7313030A FR2180754A1 FR 2180754 A1 FR2180754 A1 FR 2180754A1 FR 7313030 A FR7313030 A FR 7313030A FR 7313030 A FR7313030 A FR 7313030A FR 2180754 A1 FR2180754 A1 FR 2180754A1
- Authority
- FR
- France
- 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.)
- Withdrawn
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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
- F15B11/05—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive
- F15B11/055—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive by adjusting the pump output or bypass
-
- 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
- F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
-
- 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/25—Pressure control functions
- F15B2211/253—Pressure margin control, e.g. pump pressure in relation to load 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
- F15B2211/30—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
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/321—Directional control characterised by the type of actuation mechanically
- F15B2211/324—Directional control characterised by the type of actuation mechanically manually, e.g. by using a lever or pedal
-
- 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
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/321—Directional control characterised by the type of actuation mechanically
- F15B2211/325—Directional control characterised by the type of actuation mechanically actuated by an output member of the circuit
-
- 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
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7052—Single-acting output members
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US24579372A | 1972-04-20 | 1972-04-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2180754A1 true FR2180754A1 (fr) | 1973-11-30 |
Family
ID=22928098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7313030A Withdrawn FR2180754A1 (fr) | 1972-04-20 | 1973-04-11 |
Country Status (8)
Country | Link |
---|---|
US (1) | US3754400A (fr) |
AR (1) | AR197895A1 (fr) |
CA (1) | CA948963A (fr) |
DE (2) | DE7308751U (fr) |
ES (1) | ES413538A1 (fr) |
FR (1) | FR2180754A1 (fr) |
GB (1) | GB1385852A (fr) |
IT (1) | IT985618B (fr) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4401009A (en) * | 1972-11-08 | 1983-08-30 | Control Concepts, Inc. | Closed center programmed valve system with load sense |
US3995831A (en) * | 1974-12-17 | 1976-12-07 | The United States Of America As Represented By The Secretary Of The Army | Force feedback controlled winch |
US3989062A (en) * | 1975-05-09 | 1976-11-02 | Hydraulic Industries, Inc. | Source fluid supply and pressure control system for hydraulic motors |
US3973399A (en) * | 1975-12-29 | 1976-08-10 | Deere & Company | Demand compensated hydraulic system with pilot line dither |
US4004418A (en) * | 1975-12-29 | 1977-01-25 | Deere & Company | Demand compensated hydraulic system with flow sensitive device |
US3990237A (en) * | 1975-12-29 | 1976-11-09 | Deere & Company | Deman compensated hydraulic system with pressure amplifier |
US3995425A (en) * | 1976-03-08 | 1976-12-07 | Deere & Company | Demand compensated hydraulic system with pilot line pressure-maintaining valve |
US4037410A (en) * | 1976-05-26 | 1977-07-26 | The Cessna Aircraft Company | Hydraulic control valve |
US4399653A (en) * | 1980-03-14 | 1983-08-23 | Pylat Jr John A | Automatic adjusting deceleration control for a hydrostatically powered device |
DE3603742A1 (de) * | 1985-02-06 | 1986-08-14 | Aisin Seiki K.K., Kariya, Aichi | Hydraulik-pumpen-aufbau in verbindung mit einem speicher |
DE3515732A1 (de) * | 1985-05-02 | 1986-11-06 | Danfoss A/S, Nordborg | Steuereinrichtung fuer mindestens einen hydraulisch betriebenen verbraucher |
DE3728207A1 (de) * | 1987-08-24 | 1989-03-09 | Rexroth Mannesmann Gmbh | Ventilanordnung fuer zwei von einem gemeinsamen antrieb angetriebene leistungsgeregelte pumpen |
DE3733679A1 (de) * | 1987-10-05 | 1989-04-13 | Rexroth Mannesmann Gmbh | Steuerschaltung fuer einen mit einer verstellpumpe betriebenen hydraulischen kraftheber |
DE3911022A1 (de) * | 1987-10-05 | 1990-10-11 | Rexroth Mannesmann Gmbh | Steuerschaltung fuer einen mit einer verstellpumpe betriebenen hydraulischen kraftheber |
JP3115887B2 (ja) * | 1990-09-28 | 2000-12-11 | 株式会社小松製作所 | クローズドセンタ・ロードセンシングシステムにおけるポンプの吐出容積の可変回路 |
KR100205568B1 (ko) * | 1996-07-10 | 1999-07-01 | 토니헬샴 | 로우더의 유압장치 |
JP4223893B2 (ja) * | 2002-10-23 | 2009-02-12 | 株式会社小松製作所 | 作業車両の作業機用油圧ポンプの制御方法と制御装置 |
EP2569547B1 (fr) | 2010-05-11 | 2019-03-27 | Parker-Hannificn Corporation | Système hydraulique compensé en pression avec régulation différentielle de la pression |
CN106224308B (zh) * | 2016-08-24 | 2018-06-08 | 湖北三江航天万山特种车辆有限公司 | 一种履带式轨道铺设牵引车的液压系统 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2238060A (en) * | 1938-02-08 | 1941-04-15 | Manly Corp | Fluid pressure feed and rapid traverse system of transmission of power |
US3002462A (en) * | 1957-08-13 | 1961-10-03 | Racine Hydraulics & Machinery | Fluid translating apparatus |
US2892311A (en) * | 1958-01-08 | 1959-06-30 | Deere & Co | Hydraulic apparatus |
US2892312A (en) * | 1958-01-27 | 1959-06-30 | Deere & Co | Demand compensated hydraulic system |
-
1972
- 1972-04-20 US US00245793A patent/US3754400A/en not_active Expired - Lifetime
- 1972-11-07 CA CA155,858A patent/CA948963A/en not_active Expired
-
1973
- 1973-03-08 DE DE7308751U patent/DE7308751U/de not_active Expired
- 1973-03-08 DE DE19732311457 patent/DE2311457A1/de active Pending
- 1973-04-02 IT IT49198/73A patent/IT985618B/it active
- 1973-04-10 ES ES413538A patent/ES413538A1/es not_active Expired
- 1973-04-11 FR FR7313030A patent/FR2180754A1/fr not_active Withdrawn
- 1973-04-18 AR AR247632A patent/AR197895A1/es active
- 1973-04-19 GB GB1906973A patent/GB1385852A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2311457A1 (de) | 1973-10-31 |
US3754400A (en) | 1973-08-28 |
AR197895A1 (es) | 1974-05-15 |
ES413538A1 (es) | 1976-01-16 |
CA948963A (en) | 1974-06-11 |
IT985618B (it) | 1974-12-10 |
GB1385852A (en) | 1975-03-05 |
DE7308751U (de) | 1976-10-14 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |