FR2410755A1 - TELESCOPIC HYDRAULIC CYLINDER - Google Patents
TELESCOPIC HYDRAULIC CYLINDERInfo
- Publication number
- FR2410755A1 FR2410755A1 FR7834242A FR7834242A FR2410755A1 FR 2410755 A1 FR2410755 A1 FR 2410755A1 FR 7834242 A FR7834242 A FR 7834242A FR 7834242 A FR7834242 A FR 7834242A FR 2410755 A1 FR2410755 A1 FR 2410755A1
- Authority
- FR
- France
- Prior art keywords
- piston
- hydraulic cylinder
- telescopic hydraulic
- duct
- mushroom
- 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.)
- Granted
Links
Classifications
-
- 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
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
- B66F3/26—Adaptations or arrangements of pistons
- B66F3/28—Adaptations or arrangements of pistons telescopic
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Actuator (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
VERIN HYDRAULIQUE TELESCOPIQUE COMPORTANT UN PISTON PLEIN ET UN PISTON CREUX DANS LE FOND DUQUEL EST PREVU UN CLAPET ANTI-RETOUR QUI OBTURE UN CONDUIT DE TROP-PLEIN ALLANT DE LA CHAMBRE DU VERIN AU VOLUME INTERIEUR DU PISTON CREUX. ON PREVOIT DANS LE FOND 14 DU PISTON CREUX 2 UN PISTON DIFFERENTIEL 18 EN FORME DE CHAMPIGNON TRAVERSE PAR UN CONDUIT A ETRANGLEMENT 26, LEQUEL PISTON COULISSE DANS UNE CHAMBRE 15 EN FORME DE CHAMPIGNON, DONT L'EXTREMITE 16 DEBOUCHE DANS LE CONDUIT DE TROP-PLEIN 17, LE PIED DE PISTON 19 OBTURANT EN TANT QUE CLAPET ANTI-RETOUR LE CONDUIT DE TROP-PLEIN 17 AU POINT MORT HAUT DU PISTON DIFFERENTIEL 18. APPLICATION AUX VERINS SYNCHRONISES, EN PARTICULIER D'ASCENSEURS.TELESCOPIC HYDRAULIC CYLINDER INCLUDING A FULL PISTON AND A HOLLOW PISTON IN THE BOTTOM OF WHICH A NON-RETURN VALVE IS PROVIDED THAT CLOSES AN OVERFLOW DUCT GOING FROM THE CYLINDER CHAMBER TO THE INTERNAL VOLUME OF THE HOLLOW PISTON. PROVIDED IN THE BOTTOM 14 OF THE HOLLOW PISTON 2 A DIFFERENTIAL PISTON 18 IN THE SHAPE OF A MUSHROOM CROSSED BY A CHANGING DUCT 26, WHICH PISTON SLIDES IN A CHAMBER 15 IN THE SHAPE OF MUSHROOM, THE END OF WHICH 16 EXTENDS INTO THE OVERFLOW DUCT. FULL 17, THE FOOT OF PISTON 19 CLOSING AS A NON-RETURN VALVE THE OVERFLOW DUCT 17 AT THE TOP NEUTRAL OF THE DIFFERENTIAL PISTON 18. APPLICATION TO SYNCHRONIZED CYLINDERS, IN PARTICULAR LIFT.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772754016 DE2754016C3 (en) | 1977-12-05 | 1977-12-05 | Hydraulic telescopic lifting cylinder |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2410755A1 true FR2410755A1 (en) | 1979-06-29 |
FR2410755B1 FR2410755B1 (en) | 1982-12-10 |
Family
ID=6025295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7834242A Granted FR2410755A1 (en) | 1977-12-05 | 1978-12-05 | TELESCOPIC HYDRAULIC CYLINDER |
Country Status (5)
Country | Link |
---|---|
AT (1) | AT358772B (en) |
CH (1) | CH634899A5 (en) |
DE (1) | DE2754016C3 (en) |
FR (1) | FR2410755A1 (en) |
GB (1) | GB2009322B (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4509409A (en) * | 1983-02-07 | 1985-04-09 | Towmotor Corporation | Pump arrangement for a linear fluid operated device |
AU666004B2 (en) * | 1992-06-09 | 1996-01-25 | Gradash Pty Ltd | Heavy equipment jack |
DE19736141A1 (en) * | 1997-08-20 | 1999-03-04 | Hydraulik Liftsysteme Walter M | Hydraulic cylinder stable against bending |
CZ13947U1 (en) * | 2003-07-21 | 2004-01-26 | Alois Príborský | Hydraulic jack |
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 |
DE102013017062A1 (en) | 2013-10-15 | 2015-04-16 | Eisenmann Ag | Feed unit and conveyor system for conveying load carriers |
CN103639445A (en) * | 2013-11-18 | 2014-03-19 | 无锡京华重工装备制造有限公司 | Balance oil cylinder device of vertical lathe |
DE102016207529A1 (en) * | 2016-05-02 | 2017-11-02 | Hydro Systems Kg | Lifter for an airplane |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1229402A (en) * | 1959-04-24 | 1960-09-07 | Toussaint & Hess Gmbh | Hydraulic piston control with telescopic pistons |
FR1441870A (en) * | 1965-07-01 | 1966-06-10 | Toussaint & Hess Gmbh | Hydraulic control for telescopic pistons |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2104502C3 (en) * | 1971-02-01 | 1973-10-31 | Fa. Heinrich Brauer, 4150 Krefeld | Hydraulic lifting device |
-
1977
- 1977-12-05 DE DE19772754016 patent/DE2754016C3/en not_active Expired
-
1978
- 1978-11-29 CH CH1220278A patent/CH634899A5/en not_active IP Right Cessation
- 1978-12-04 AT AT864178A patent/AT358772B/en not_active IP Right Cessation
- 1978-12-05 GB GB7847310A patent/GB2009322B/en not_active Expired
- 1978-12-05 FR FR7834242A patent/FR2410755A1/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1229402A (en) * | 1959-04-24 | 1960-09-07 | Toussaint & Hess Gmbh | Hydraulic piston control with telescopic pistons |
FR1441870A (en) * | 1965-07-01 | 1966-06-10 | Toussaint & Hess Gmbh | Hydraulic control for telescopic pistons |
Also Published As
Publication number | Publication date |
---|---|
CH634899A5 (en) | 1983-02-28 |
GB2009322A (en) | 1979-06-13 |
ATA864178A (en) | 1980-02-15 |
DE2754016B2 (en) | 1981-02-12 |
DE2754016C3 (en) | 1981-11-19 |
GB2009322B (en) | 1982-07-14 |
FR2410755B1 (en) | 1982-12-10 |
DE2754016A1 (en) | 1979-06-07 |
AT358772B (en) | 1980-09-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |