GB901948A - Pressure control mechanism - Google Patents
Pressure control mechanismInfo
- Publication number
- GB901948A GB901948A GB4296460A GB4296460A GB901948A GB 901948 A GB901948 A GB 901948A GB 4296460 A GB4296460 A GB 4296460A GB 4296460 A GB4296460 A GB 4296460A GB 901948 A GB901948 A GB 901948A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- pressure
- piston
- valve seat
- actuated apparatus
- Prior art date
- 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.)
- Expired
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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/001—Double valve requiring the use of both hands simultaneously
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/14—Control arrangements for mechanically-driven presses
- B30B15/142—Control arrangements for mechanically-driven presses controlling the brake or the clutch
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/28—Arrangements for preventing distortion of, or damage to, presses or parts thereof
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Control Of Fluid Pressure (AREA)
- Fluid-Pressure Circuits (AREA)
- Control Of Presses (AREA)
Abstract
901,948. Hydraulic presses. HERION, E. Dec. 14, 1960 [Dec. 21, 1959], No. 42964/60. Class 69 (2). A safety control mechanism for controlling the operation of at least one fluid-pressure actuated apparatus, such as a press, comprises at least two individual valves 1, 11 which are connected in parallel and actuated simultaneously either mechanically or by solenoids 15, each valve being connected to only one fluid-pressure actuated apparatus by outlets 3 and having a movable valve member 4 adapted to engage a valve seat 5 to close a valve port connected to a pressure inlet 2, and each valve seat having a channel 6 connected to a pressurecomparison means 9 whereby in the event of faulty operation of one of the valve members, the pressure-comparison means automatically interrupts the pressure supply to the fluidpressure actuated apparatus. The channel 6 in each valve seat is connected by a by-pass 7 to the pressure inlet 2 and by a conduit 8 to the pressure-comparison means consisting of a piston 9 spring-urged to a central position in a cylinder. Faulty operation of one or other of the valve members results in a pressure differential at the valve seats moving the piston 9 to actuate a member 11 interrupting the supply to the fluidpressure actuated apparatus by operating a switch 16 in the circuits to the solenoids or by shutting off the pressure supply to the inlets 2. An adjustable throttle 13 may be disposed between the ends of the piston 9 to permit slight fluctuations of pressure to occur in the channels without operation of the member 11. The valves may be combined in a double valve or each valve may be of the three-way type having further valve seats 5<SP>1</SP> provided with channels 6<SP>1</SP> connected by by-pass passages 7<SP>1</SP> to the pressure inlets 2 and by conduits 8<SP>1</SP> and one-way valves to the ends of the same or a separate piston 9. Each valve member 4 has a projection 13 which acts to close the port between the inlet and outlet before the valve member engages the valve seat.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEH0038202 | 1959-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB901948A true GB901948A (en) | 1962-07-25 |
Family
ID=7153563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4296460A Expired GB901948A (en) | 1959-12-21 | 1960-12-14 | Pressure control mechanism |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH399913A (en) |
| DE (1) | DE1401300B2 (en) |
| GB (1) | GB901948A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5842699Y2 (en) * | 1977-11-10 | 1983-09-27 | 株式会社小松製作所 | Dual valve failure detection device |
| FR2410753A1 (en) * | 1977-12-02 | 1979-06-29 | Gratzmuller Claude | SIMULTANEOUS HYDRAULIC CONTROL, ESPECIALLY FOR THE CONTROL OF ELECTRIC CIRCUIT BREAKERS |
| CN110788320B (en) * | 2019-08-23 | 2021-11-16 | 广州力鸿自动化设备有限公司 | Automatic change servo powder forming machine of precision |
-
1959
- 1959-12-21 DE DE19591401300 patent/DE1401300B2/en active Granted
-
1960
- 1960-12-10 CH CH1392060A patent/CH399913A/en unknown
- 1960-12-14 GB GB4296460A patent/GB901948A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH399913A (en) | 1965-09-30 |
| DE1401300A1 (en) | 1968-10-24 |
| DE1401300B2 (en) | 1974-06-20 |
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