GB1449971A - Telescopic cylinder-piston devices - Google Patents
Telescopic cylinder-piston devicesInfo
- Publication number
- GB1449971A GB1449971A GB964874A GB964874A GB1449971A GB 1449971 A GB1449971 A GB 1449971A GB 964874 A GB964874 A GB 964874A GB 964874 A GB964874 A GB 964874A GB 1449971 A GB1449971 A GB 1449971A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fluid
- piston
- port
- actuator
- chamber
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
Abstract
1449971 Telescopic actuators H JUNGHEINRICH & CO MASCHINENFABRIK 4 March 1974 [17 April 1973] 9648/74 Heading F1D To expand the double-acting telescopic actuator shown in Fig. 1 pressure fluid is admitted through an inlet 4 to push out piston 6 and cylinder 5 relative to cylinder 1. This causes fluid to be displaced by piston 6 from a chamber 10 through ports 36 into a chamber 35, thus pushing out piston 21 and piston-rod 20. Fluid displaced by the piston 21 from a chamber 26 flows out through ports 34, the interior 31 of the piston-rod 30 and a port 29. Contraction of the actuator is effected by admitting fluid through the port 29 and exhausting through the port 4. Chambers 10 and 35 contain a constant volume of fluid, any losses being made up through a spring-loaded check-valve 16. Venting devices 32, 33 allow the escape of air during initial charging of the actuator. This arrangement ensures that all sections of the actuator expand simultaneously. Fig. 2 shows an embodiment in which fluid admitted through a port 4' acts on pistons 6', 21', to move them to the left and fluid is exhausted from chambers 10' and 26' through a port 29' via ports 43, 44, 34'.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732319344 DE2319344A1 (en) | 1973-04-17 | 1973-04-17 | DOUBLE-ACTING TELESCOPIC CYLINDER PISTON DEVICE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1449971A true GB1449971A (en) | 1976-09-15 |
Family
ID=5878356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB964874A Expired GB1449971A (en) | 1973-04-17 | 1974-03-04 | Telescopic cylinder-piston devices |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE2319344A1 (en) |
| FR (1) | FR2226579A1 (en) |
| GB (1) | GB1449971A (en) |
| IT (1) | IT1006467B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2255804A (en) * | 1991-05-16 | 1992-11-18 | Nesbit Evans Healthcare Ltd | Hydraulic displacement system |
| EP1544475A3 (en) * | 2003-12-18 | 2005-08-10 | Gianfranco Natali | A telescopic cylinder |
| CN102410278A (en) * | 2011-11-11 | 2012-04-11 | 三一重工股份有限公司 | Multistage single-action hydraulic cylinder and engineering machinery provided with same |
| ITRN20130040A1 (en) * | 2013-09-30 | 2015-03-31 | H S Penta S P A | HYDRAULIC CYLINDER. |
| CN107931603A (en) * | 2017-11-24 | 2018-04-20 | 南通巨能锻压机床有限公司 | A kind of dry powder product frame type hydraulic press is taken blame for others mechanism |
| CN114712659A (en) * | 2022-04-20 | 2022-07-08 | 常州赛乐医疗技术有限公司 | Hydraulic drive type anesthesia boosting instrument |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2345608A1 (en) * | 1976-03-23 | 1977-10-21 | Pagliero Pietro | Hydraulic ram with coaxial cylinders - has central telescopic flow tubes and apertures through cylinders |
| GB1590773A (en) * | 1976-08-20 | 1981-06-10 | Telehoist Ltd | Telescoping mechanisms |
| DE3150643A1 (en) * | 1981-12-21 | 1983-06-30 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | HYDRAULIC TELESCOPE STAMP, ESPECIALLY FOR UNDERGROUND SCREAM EXTENSION, LIKE, IN PARTICULAR, SHIELD EXTENSION RACK |
| DE3438892A1 (en) * | 1984-10-24 | 1986-04-24 | Horst Ing.(Grad.) 7106 Neuenstadt Thiele | Hydraulic axle-compensation device constructed as a double-circuit system |
| DE59001375D1 (en) * | 1990-10-05 | 1993-06-09 | Hunger Walter | HYDRAULIC TELESCOPIC CYLINDER FOR THE TIPPER BRIDGE OF TIPPER VEHICLES. |
| FR2738884B1 (en) * | 1995-09-19 | 1997-10-24 | Valeo | CYLINDER WITH TWO CONTROL CHAMBERS AND RELEASE STOPPER PROVIDED WITH SUCH A CYLINDER |
| DE102011108232A1 (en) * | 2011-07-11 | 2013-01-17 | Hilde Schlögl | Double-acting telescopic hydraulic cylinder for snow plow, particularly lateral snow plow, has two openings for feeding or discharging of hydraulic fluid from outer cylinder member |
| CN109114067A (en) * | 2018-09-21 | 2019-01-01 | 仁兴机械（佛山）有限公司 | A kind of cylinder, cylinder structure |
-
1973
- 1973-04-17 DE DE19732319344 patent/DE2319344A1/en active Pending
-
1974
- 1974-03-04 GB GB964874A patent/GB1449971A/en not_active Expired
- 1974-03-13 FR FR7408483A patent/FR2226579A1/fr not_active Withdrawn
- 1974-04-16 IT IT2147574A patent/IT1006467B/en active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2255804A (en) * | 1991-05-16 | 1992-11-18 | Nesbit Evans Healthcare Ltd | Hydraulic displacement system |
| GB2255804B (en) * | 1991-05-16 | 1994-10-26 | Nesbit Evans Healthcare Ltd | Hoists |
| EP1544475A3 (en) * | 2003-12-18 | 2005-08-10 | Gianfranco Natali | A telescopic cylinder |
| CN102410278A (en) * | 2011-11-11 | 2012-04-11 | 三一重工股份有限公司 | Multistage single-action hydraulic cylinder and engineering machinery provided with same |
| ITRN20130040A1 (en) * | 2013-09-30 | 2015-03-31 | H S Penta S P A | HYDRAULIC CYLINDER. |
| CN107931603A (en) * | 2017-11-24 | 2018-04-20 | 南通巨能锻压机床有限公司 | A kind of dry powder product frame type hydraulic press is taken blame for others mechanism |
| CN107931603B (en) * | 2017-11-24 | 2023-12-29 | 南通巨能锻压机床有限公司 | Top cylinder mechanism of frame type hydraulic press for dry powder products |
| CN114712659A (en) * | 2022-04-20 | 2022-07-08 | 常州赛乐医疗技术有限公司 | Hydraulic drive type anesthesia boosting instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2319344A1 (en) | 1974-11-07 |
| IT1006467B (en) | 1976-09-30 |
| FR2226579A1 (en) | 1974-11-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |