GB621974A - A new or improved fluid-pressure-responsive control valve of the sliding piston type - Google Patents
A new or improved fluid-pressure-responsive control valve of the sliding piston typeInfo
- Publication number
- GB621974A GB621974A GB33971/46A GB3397146A GB621974A GB 621974 A GB621974 A GB 621974A GB 33971/46 A GB33971/46 A GB 33971/46A GB 3397146 A GB3397146 A GB 3397146A GB 621974 A GB621974 A GB 621974A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- valve
- pressure
- port
- ports
- 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B17/00—Hoistway equipment
- B66B17/14—Applications of loading and unloading equipment
- B66B17/26—Applications of loading and unloading equipment for loading or unloading mining-hoist skips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/12—Platforms; Forks; Other load supporting or gripping members
- B66F9/18—Load gripping or retaining means
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/04—Control of fluid pressure without auxiliary power
- G05D16/10—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger
- G05D16/101—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger the controller being arranged as a multiple-way valve
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2812/00—Indexing codes relating to the kind or type of conveyors
- B65G2812/06—Skip or hopper conveyors
- B65G2812/0609—Constitutive elements or auxiliary devices
- B65G2812/0654—Tipping means
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Automation & Control Theory (AREA)
- Civil Engineering (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid-Driven Valves (AREA)
- Hydraulic Motors (AREA)
- Massaging Devices (AREA)
Abstract
621,974. Fluid-actuated valves. METAL VENTS, Ltd., and ZWICKY, J. F. Nov. 15, 1945, Nos. 33971/46 (divided out of 621,952) and 33972/46. [Class 135] In a multiway piston valve the piston is biassed by a spring or gravity to one end position and moved in the opposite direction by the pressure of actuating fluid, so as to take up definite positions corresponding to the fluid pressure. Fig. 1 shows a valve for the selective draining of three tanks connected to ports 7, 8, 9, the actuating pressure being applied through the port 4 and the piston formed with a draining duct 13. Fig. 3 shows a modification in which the pressure liquid is distributed through a central bore 18 and a radial bore communicating therewith to one of three ports 15, 16, 17 connected to tanks to be filled. In this case, rotation is imparted to the axially-moving piston by a ball 20 engaging a helical groove 19 in the surface of the piston. In another arrangement, the piston 9, Fig. 4, picks up weights 25, 26 as it moves. Fig. 5 shows a valve for use with a double-acting power piston cylinder, the opposite ends of which are connected to the valve ports 30, 31. Upon the application of low pressure to the port 4 the piston is moved so that the ports 30, 31 are connected via the duct 34 in the piston. Increase in the fluid pressure aligns the piston passages 33 with the port 30, so that pressure liquid passes to one end of the power cylinder, which liquid is forced from the opposite end to the port 31 and thence via the groove 31a in the valve casing to the exhaust port 32. In a modification, the valve is provided with an additional port, whereby pressure liquid may be applied to either end of the power cylinder. Specific applications of the valve of Fig. 5 and of the modification are described in Specification 621,952.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB30651/45A GB621952A (en) | 1945-11-15 | 1945-11-15 | Improvements in stacking, lifting and like devices |
GB33971/46A GB621974A (en) | 1945-11-15 | 1945-11-15 | A new or improved fluid-pressure-responsive control valve of the sliding piston type |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB30651/45A GB621952A (en) | 1945-11-15 | 1945-11-15 | Improvements in stacking, lifting and like devices |
GB33971/46A GB621974A (en) | 1945-11-15 | 1945-11-15 | A new or improved fluid-pressure-responsive control valve of the sliding piston type |
Publications (1)
Publication Number | Publication Date |
---|---|
GB621974A true GB621974A (en) | 1949-04-25 |
Family
ID=60331161
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB33971/46A Expired GB621974A (en) | 1945-11-15 | 1945-11-15 | A new or improved fluid-pressure-responsive control valve of the sliding piston type |
GB30651/45A Expired GB621952A (en) | 1945-11-15 | 1945-11-15 | Improvements in stacking, lifting and like devices |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30651/45A Expired GB621952A (en) | 1945-11-15 | 1945-11-15 | Improvements in stacking, lifting and like devices |
Country Status (1)
Country | Link |
---|---|
GB (2) | GB621974A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3086670A (en) * | 1960-05-12 | 1963-04-23 | Unitra S A | Arrangement for the tilting of a load |
DE1253637B (en) * | 1963-02-23 | 1967-11-02 | Mini Of Technoligy | Lift truck with tiltable load carrier |
US4883148A (en) * | 1988-10-11 | 1989-11-28 | Sundstrand Corporation | Fill valve for liquid containing device |
US4895219A (en) * | 1988-10-11 | 1990-01-23 | Sundstrand Corporation | Fill valve for liquid containing device |
-
1945
- 1945-11-15 GB GB33971/46A patent/GB621974A/en not_active Expired
- 1945-11-15 GB GB30651/45A patent/GB621952A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB621952A (en) | 1949-04-25 |
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