GB837528A - Improvements in or relating to hydraulic cylinder and piston assemblies such as hydropneumatic accumulators - Google Patents
Improvements in or relating to hydraulic cylinder and piston assemblies such as hydropneumatic accumulatorsInfo
- Publication number
- GB837528A GB837528A GB26772/58A GB2677258A GB837528A GB 837528 A GB837528 A GB 837528A GB 26772/58 A GB26772/58 A GB 26772/58A GB 2677258 A GB2677258 A GB 2677258A GB 837528 A GB837528 A GB 837528A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ring
- cylinder
- piston
- spring
- pressure
- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/04—Accumulators
- F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
- F15B1/24—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with rigid separating means, e.g. pistons
-
- 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
- F15B2201/00—Accumulators
- F15B2201/20—Accumulator cushioning means
- F15B2201/205—Accumulator cushioning means using gas
-
- 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
- F15B2201/00—Accumulators
- F15B2201/20—Accumulator cushioning means
- F15B2201/21—Accumulator cushioning means using springs
-
- 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
- F15B2201/00—Accumulators
- F15B2201/30—Accumulator separating means
- F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
- F15B2201/312—Sealings therefor, e.g. piston rings
-
- 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
- F15B2201/00—Accumulators
- F15B2201/40—Constructional details of accumulators not otherwise provided for
- F15B2201/41—Liquid ports
-
- 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
- F15B2201/00—Accumulators
- F15B2201/40—Constructional details of accumulators not otherwise provided for
- F15B2201/415—Gas ports
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
837,528. Pistons. GRATZMULLER, J. L. Aug. 20, 1958 [Aug. 23, 1957], No. 26772/58. Class 122 (1). [Also in Group XXIX] A piston and cylinder assembly for a freepiston type hydropneumatic accumulator comprises a piston 2 having a rebate in which is mounted an elastically and plastically deformable sealing ring 4 of a material which, in order that the ring may be deformed into sealing contact with the cylinder 1 by a spring 5 acting through a compressor member 6, needs to be subjected to a pressure at least equal to the maximum operating pressure in the cylinder ; further, the material of the ring has a coefficient of friction of the order of 0.05. The sealing ring 4 may be made of polytetrafluoroethylene and is formed with cross-sectional dimensions small in relation to the cylinder diameter, the spring 5 being suitably designed to load the ring so that it makes adequate sealing contact around its complete circumference. The physical properties of the material of the ring are such that when the liquid in the accumulator has been exhausted and the piston 2 abuts the cylinder head, the pressure of the gas acting on the member 6 in addition to the spring pressure does not cause the ring to be extruded between the piston and cylinder. The spring 5 acts between an abutment plate 13 retained on the piston rod 12 by a nut or circlip 14 and is located by portions 8, 9. The member 6 is located on a spigot 7 and, in order to permit freedom of angular movement, its locating diameter is radiused at 11 and its outer diameter is suitably tapered. Specifications 702,088 and 712,577 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR837528X | 1957-08-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB837528A true GB837528A (en) | 1960-06-15 |
Family
ID=9298635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB26772/58A Expired GB837528A (en) | 1957-08-23 | 1958-08-20 | Improvements in or relating to hydraulic cylinder and piston assemblies such as hydropneumatic accumulators |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB837528A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105090137A (en) * | 2014-05-20 | 2015-11-25 | 福特全球技术公司 | Self-orienting piston spring accumulator |
-
1958
- 1958-08-20 GB GB26772/58A patent/GB837528A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105090137A (en) * | 2014-05-20 | 2015-11-25 | 福特全球技术公司 | Self-orienting piston spring accumulator |
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