GB1148410A - Improvements in vehicle hydro-pneumatic suspension systems - Google Patents
Improvements in vehicle hydro-pneumatic suspension systemsInfo
- Publication number
- GB1148410A GB1148410A GB47438/66A GB4743866A GB1148410A GB 1148410 A GB1148410 A GB 1148410A GB 47438/66 A GB47438/66 A GB 47438/66A GB 4743866 A GB4743866 A GB 4743866A GB 1148410 A GB1148410 A GB 1148410A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ring
- groove
- piston
- oil
- vehicle
- 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
- 239000000725 suspension Substances 0.000 title abstract 3
- 239000004033 plastic Substances 0.000 abstract 2
- 229920003023 plastic Polymers 0.000 abstract 2
- 230000000295 complement effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 238000005461 lubrication Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/368—Sealings in pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
1,148,410. Hydro-pneumatic suspension units. REGIE NATIONALE DES USINES RENAULT. 21 Oct., 1966 [10 Nov., 1965], No. 47438/66. Heading F2S. In a hydro-pneumatic suspension system for a vehicle comprising a piston 5, having, e.g. a pair of conventional split rings 6 and which works in a cylinder 2 fed e.g. with oil through a pipe 3 and having e.g. a pipe 4 for returning leakage oil to a reservoir, not shown, the piston is provided with a complementary elastic ring 7 which is capable of ensuring a perfect fluid tightness when the vehicle is stationary while permitting leakage of oil when the piston is reciprocated in the cylinder to provide lubrication and lower frictional resistance, the ring 7, made e.g. of rubber or suitable plastics material, having a slightly greater diameter than the cylinder bore, and being received, with a certain axial play, in a groove 8 and leaving an annular space 14 between the inner periphery of the ring 7 and the bottom of the groove 8. In this manner, on an initial upward movement of the piston 5, e.g. when the vehicle is stationary, oil leaks past the rings 6 to fill up the space 14 in the groove 8 and increase the pressure therein the ring 7 being strongly urged radially against the cylinder wall with a force which is greater than the force which urges the lower face 11 of the ring into sealing engagement with the lower face 12 of the groove 8. When the vehicle is in motion each downward stroke of the piston 5 causes the piston to move downwards relative to the ring 7 so that oil can leak from the groove space 14 past a passage 13, between the lower faces 11, 12 respectively of the ring 7 and the groove face 12, and into the normal clearance space between the piston and cylinder. In a modification, Fig. 3, not shown, the ring (7) is constantly urged toward the groove face (12) by a metal spring (16). The spring (16) may be replaced by a resilient plastics ring having radial passages to permit ingress of oil into the groove space 14. This spring may be integral with the body of the ring 7.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR38006A FR1463157A (en) | 1965-11-10 | 1965-11-10 | Piston seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1148410A true GB1148410A (en) | 1969-04-10 |
Family
ID=8592272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB47438/66A Expired GB1148410A (en) | 1965-11-10 | 1966-10-21 | Improvements in vehicle hydro-pneumatic suspension systems |
Country Status (5)
| Country | Link |
|---|---|
| DE (1) | DE1525816B1 (en) |
| FR (1) | FR1463157A (en) |
| GB (1) | GB1148410A (en) |
| OA (1) | OA02144A (en) |
| SE (1) | SE342412B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2341350C2 (en) * | 1973-08-16 | 1982-06-09 | Fichtel & Sachs Ag, 8720 Schweinfurt | High pressure seal |
| FR2587773A1 (en) * | 1985-09-25 | 1987-03-27 | Allinquant Sa | Telescopic hydraulic damper, fitted in particular for damping the oscillations of engines |
| GB9513507D0 (en) * | 1995-07-03 | 1995-09-06 | Kv Limited | An improved seal arrangement |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD29095A (en) * | ||||
| FR545682A (en) * | 1922-01-06 | 1922-10-18 | Piston ring forming automatic valve | |
| US1646143A (en) * | 1926-01-05 | 1927-10-18 | Forster Merle | Piston ring |
| US2321791A (en) * | 1940-03-19 | 1943-06-15 | Melville W Beardsley | Piston ring gas seal |
| CH233429A (en) * | 1942-10-28 | 1944-07-31 | Wankel Felix | Joint sealing, especially against large pressure and heat differences. |
| US2614793A (en) * | 1948-12-23 | 1952-10-21 | Lynn W Storm | One-way seal |
| US2905489A (en) * | 1956-11-01 | 1959-09-22 | Garlock Packing Co | High-pressure fluid seals |
| FR1191687A (en) * | 1958-02-18 | 1959-10-21 | Improvement of piston rings | |
| US3109661A (en) * | 1962-01-10 | 1963-11-05 | Frank H Swaim | Low torque rotary seal |
| US3067584A (en) * | 1962-02-15 | 1962-12-11 | Black & Decker Mfg Co | Sealing ring means for reciprocating piston used in power-operated percussive tool |
-
1965
- 1965-11-10 FR FR38006A patent/FR1463157A/en not_active Expired
-
1966
- 1966-09-27 OA OA52607A patent/OA02144A/en unknown
- 1966-10-21 GB GB47438/66A patent/GB1148410A/en not_active Expired
- 1966-11-09 SE SE15314/66A patent/SE342412B/xx unknown
- 1966-11-09 DE DE19661525816D patent/DE1525816B1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| SE342412B (en) | 1972-02-07 |
| FR1463157A (en) | 1966-06-03 |
| OA02144A (en) | 1970-05-05 |
| DE1525816B1 (en) | 1970-12-03 |
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