JPS505354B1 - - Google Patents
Info
- Publication number
- JPS505354B1 JPS505354B1 JP4393369A JP4393369A JPS505354B1 JP S505354 B1 JPS505354 B1 JP S505354B1 JP 4393369 A JP4393369 A JP 4393369A JP 4393369 A JP4393369 A JP 4393369A JP S505354 B1 JPS505354 B1 JP S505354B1
- 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
- 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
-
- 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
- F15B2211/30—Directional control
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3105—Neutral or centre positions
- F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
-
- 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
- F15B2211/40—Flow control
- F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Control Of Fluid Gearings (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2652968A GB1262488A (en) | 1968-06-04 | 1968-06-04 | Hydraulic apparatus for including variable-delivery pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS505354B1 true JPS505354B1 (US06312121-20011106-C00033.png) | 1975-03-03 |
Family
ID=10245069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4393369A Pending JPS505354B1 (US06312121-20011106-C00033.png) | 1968-06-04 | 1969-06-04 |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS505354B1 (US06312121-20011106-C00033.png) |
| DE (1) | DE1928083C3 (US06312121-20011106-C00033.png) |
| GB (1) | GB1262488A (US06312121-20011106-C00033.png) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0419570U (US06312121-20011106-C00033.png) * | 1990-06-04 | 1992-02-19 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3788077A (en) * | 1972-07-13 | 1974-01-29 | Borg Warner | Open center control of variable pumps |
| US4197705A (en) * | 1978-05-30 | 1980-04-15 | General Signal Corporation | Hydraulic control system |
-
1968
- 1968-06-04 GB GB2652968A patent/GB1262488A/en not_active Expired
-
1969
- 1969-06-02 DE DE19691928083 patent/DE1928083C3/de not_active Expired
- 1969-06-04 JP JP4393369A patent/JPS505354B1/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0419570U (US06312121-20011106-C00033.png) * | 1990-06-04 | 1992-02-19 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1928083C3 (de) | 1973-09-13 |
| DE1928083A1 (de) | 1969-12-11 |
| DE1928083B2 (de) | 1972-08-03 |
| GB1262488A (en) | 1972-02-02 |
