WO1986006802A1 - Power cell - Google Patents

Power cell Download PDF

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Publication number
WO1986006802A1
WO1986006802A1 PCT/CH1986/000063 CH8600063W WO8606802A1 WO 1986006802 A1 WO1986006802 A1 WO 1986006802A1 CH 8600063 W CH8600063 W CH 8600063W WO 8606802 A1 WO8606802 A1 WO 8606802A1
Authority
WO
WIPO (PCT)
Prior art keywords
power cell
mechanical work
cell
hydrostatic energy
converting
Prior art date
Application number
PCT/CH1986/000063
Other languages
German (de)
French (fr)
Inventor
Georg Hirmann
Original Assignee
Georg Hirmann
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Georg Hirmann filed Critical Georg Hirmann
Publication of WO1986006802A1 publication Critical patent/WO1986006802A1/en

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
    • F15B15/10—Characterised by the construction of the motor unit the motor being of diaphragm type
    • 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
    • B66F3/35—Inflatable flexible elements, e.g. bellows

Definitions

  • the present invention represents short stroke force generators which, in addition to high technical efficiency, enable automated bulk production with high economic efficiency.
  • a further objective of the invention is to enable the use of foils and hoses with low stretchability and high tensile strength by optimizing the surface shape and mounting. .
  • Fig. 1 shows a load cell
  • Fig. 2 shows a complete power cell
  • Fig. 3 shows a curved blank shape of the hose
  • Fig. 4 shows a tubular force cell for symmetrically arranged contact surfaces
  • Fig. 5 shows a load cell support surface and a protective tape
  • Fig. 6 shows a preformed tubular body made of flat film
  • Fig. 7 shows a floor fixing part
  • Fig. 8 shows a load cell molded onto a plastic holder part
  • Fig. 9 shows three simultaneously acting force cells
  • Fig. 1 shows one.
  • Load cell 1 tightly held at both ends 2 and 3 on a holder part 4 by clamping, the "support piston” part moved relative to the holder part 4 during the lifting movement, also shown here in sheet metal, shows item. 5, which lies against the tubular cell surface 6 or is glued to the part that remains permanently pressed, for example.
  • Fig. 2 shows a FIG. 1 similar power cell completely at maximum stroke.
  • the pressure medium termination 10 is attached to the bottom of the mounting part.
  • the hook-shaped curved side walls 11, 12 show an example of the mechanical protection of the load cell and its stroke limitation.
  • the critical part of the load cell arises before the final termination at 15, 16, where the change in shape requires the greatest excess length. This excess length can be secured by cutting the hose ends and their pretensioned assembly.
  • Fig. 3 shows a curved blank shape 20 of the tube, which is pushed and held on line 21 when clamped, as a result of which the excess length 22 is created.
  • This shaping of the tube surface at the ends of the force cells and the cylindrical cell walls 23, 24 lying between them enable the film displacements which partially reside during the lifting movement. to be kept low, which enables the use of thin, high-strength films such as Mylar, Kapton, Melinex, for smaller force cells and hoses wrapped with glass fiber (such as fire hoses) for larger force cells.
  • the end pieces for the cell ends are shown in Fig. 1 and 2, for the bracket part made of sheet metal.
  • hose ends can be used with other means such as caps, clamps, clips and the like. , locked and. detachable or non-detachable, (see Fig. 7, 8)
  • Fig. 4 shows a tubular force cell for symmetrically arranged contact surfaces.
  • the hose ends are held together here with a tension band 30, preferably with a clamped-in, made of flexible or rigid material.
  • a protective band 35 can be used to relieve the free-moving part in front of the cell ends as well as to mechanically protect the force cell support surface, the ends of which are mounted on cell ends 36, for example by being clamped together.
  • Fig. 6 shows a preformed tube body made of flat film 40, rounded 41 and connected to the tube by means of adhesive tape 42, 43.
  • This method can be carried out in a continuous process before the cell length is cut.
  • the type of connection can also be done by direct gluing of overlapped tube edges or their welding by means of high frequency or ultrasound, or by mechanical holding using knobs, claws and the like. . respectively .
  • Fig. 7 shows a floor fastening part 50 for the direct mechanical fastening of the hose edges, by snapping in or by ultrasonic welding.
  • the fastening part can, as the example shows, also include the pressure medium connection 51.
  • the figure also shows - indicated - the end caps 52, 53 which can be attached by ultrasound.
  • Fig. 8 shows a load cell 60 on a. Mounted, for example, injection molded from plastic bracket 61.
  • the ends of the load cells can here, for example, be glued or welded-on caps, 7 shows, or are tightly fastened by clamping parts 62, 63.
  • additional applied or inserted sealing compounds or sealing parts can be used as required.
  • Fig. 9 shows a single tubular cell body 70 between end terminations 71 and 72, for example in order to form three simultaneously acting force cells 73, 74, 75.
  • the medium pressure guidance between the cells is made possible in the tube channels held by fixed supports 76, 77.
  • This figure shows at the same time the use of the tubular force cells as drives with the active wedge 78 (H-STEP system) one or more times, as shown here.
  • the exemplary embodiments show the components in a simplified form, with a more precise adaptation of the support surfaces between the force cell, the holder part and the piston part being necessary in the application.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Supports For Pipes And Cables (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

The power cell is comprised of tubular cells which are prestress mounted and which are particularly appropriate to large series production.

Description

Kraftzelle Power cell
Die moderne Technik erfordert die Optimierung der Mittel zu höherer Effizienz . Die Entwicklung in der Pneumatik und Hydraulik brachte viele Fortschritte in der Anpassung der Schnittstellen zwischen Mikroelektronik und hydrosta¬ tischen Peripheriegeräten zur Erzeugung von mechanischer Arbeit , blieben jedoch diese Arbeitsgeräte , wie Arbeitszylinder und rotierende Arbeitsgeräte im wesentlichen unveränder .Modern technology requires optimization of the means for greater efficiency. The development in pneumatics and hydraulics brought many advances in adapting the interfaces between microelectronics and hydrostatic peripheral devices for the production of mechanical work, but these tools, such as working cylinders and rotating tools, remained essentially unchanged.
Die vorliegende Erfindung stellt Kurzhubkrafterzeuger dar, welche nebst hohem technischem Wirkungsgrad eine automatisierte Gros s Seriefertigung mit hoher Wirtschaftlichkeit ermöglicht .The present invention represents short stroke force generators which, in addition to high technical efficiency, enable automated bulk production with high economic efficiency.
Eine weitere Zielsetzung der Erfindung , durch die Optimierung der Flächen¬ form und Halterung , die Anwendung von Folien und Schläuchen mit geringer Dehnbarkeit und hoher Zugfestigkeit zu ermöglichen . ,A further objective of the invention is to enable the use of foils and hoses with low stretchability and high tensile strength by optimizing the surface shape and mounting. .
Die Figuren zeigen:The figures show:
Fig . 1 zeigt eine KraftzelleFig. 1 shows a load cell
Fig . 2 zeigt eine komplette KraftzelleFig. 2 shows a complete power cell
Fig . 3 zeigt eine gekrümmte Zuschnittform des SchlauchesFig. 3 shows a curved blank shape of the hose
Fig . 4 zeigt eine schlauchförmige Kraftzelle für symmetrisch angeordnete AuflageflächenFig. 4 shows a tubular force cell for symmetrically arranged contact surfaces
Fig . 5 zeigt eine Kraftzellen-Auf lagefläche und ein SchutzbandFig. 5 shows a load cell support surface and a protective tape
Fig . 6 zeigt einen vorgeformten Schlauchkörper aus flacher FolieFig. 6 shows a preformed tubular body made of flat film
Fig . 7 zeigt einen BodenbefestigungsteilFig. 7 shows a floor fixing part
Fig . 8 zeigt eine Kraftzelle auf Kunststoff gespritztem HalterungsteilFig. 8 shows a load cell molded onto a plastic holder part
Fig . 9 zeigt drei simultan wirkende Kraftzellen Fig . 1 zeigt eine . Kraftzelle 1 , an beiden Enden 2 und 3 an einen Halterungs¬ teil 4 durch Einklemmen dicht festgehalten, der gegenüber Halterungsteil 4 während der Hubbewegung bewegte "Stützkolben" -Teil , hier ebenfalls aus Blech dargestellt , zeigt Pos . 5 , der an der Schlauchzellenoberfläche 6 an¬ liegt oder am stets angepresst bleibenden Teil , beispielsweise angeklebt wird .Fig. 9 shows three simultaneously acting force cells Fig. 1 shows one. Load cell 1, tightly held at both ends 2 and 3 on a holder part 4 by clamping, the "support piston" part moved relative to the holder part 4 during the lifting movement, also shown here in sheet metal, shows item. 5, which lies against the tubular cell surface 6 or is glued to the part that remains permanently pressed, for example.
Fig . 2 zeigt eine Fig . 1 ähnliche Kraf zelle komplett bei Maximalhub . Der Druckmediumabschluss 10 ist hier am Boden des Halterungsteiles befestigt . Die hakenförmig gekrümmten Seitenwände 11 , 12 , zeigen ein Beispiel für den mechanischen Schutz der Kraftzelle und deren Hubbegrenzung . Der kri¬ tische Teil der Kraftzelle entsteht vor dem Endabschluss bei 15 ,16 , wo die Formveränderung die grösste Ueberlänge erfordert . Diese Ueberlänge kann durch den Zuschnitt der Schlauchenden und deren vorgespannte Montage ge¬ sichert werden .Fig. 2 shows a FIG. 1 similar power cell completely at maximum stroke. The pressure medium termination 10 is attached to the bottom of the mounting part. The hook-shaped curved side walls 11, 12 show an example of the mechanical protection of the load cell and its stroke limitation. The critical part of the load cell arises before the final termination at 15, 16, where the change in shape requires the greatest excess length. This excess length can be secured by cutting the hose ends and their pretensioned assembly.
Fig . 3 zeigt eine gekrümmte Zuschnittform 20 des Schlauches , welche beim Einklemmen auf die Linie 21 geschoben und festgehalten wird , wodurch die Ueberlänge 22 entsteht . Dieses Formen der Schlauchoberfläche an den Kraft¬ zellen-Enden und die dazwischen liegenden zylindrischen Zellen-Wände 23 , 24 ermöglichen die partiell auf retenden Folienverschiebungen während der Hubbewegung . gering zu halten , wodurch die Anwendung von dünnen hochfesten Folien wie Mylar , Kapton , Melinex , bei kleineren Kraftzellen und mit Glasfaser umwobenen Schläuchen (wie Feuerwehrschläuche) bei grösseren Kraftzellen möglicht wird . Die Abschlussteile für die Zellen-Enden zeigen Fig . 1 und 2 , für die Halterungsteil-Ausführung aus Blech . Bei ande¬ ren Ausführungen bei denen ein Umbiegen und Anpressen nicht möglich ist , beispielsweise volle Halterungsteile aus Metall oder Kunststoff , oder wenn der Halterungsteil auch andere Funktionen erfüllen muss , können die Schlauch¬ enden mit anderen Mitteln , wie Kappen , Klemmen , Briden u . . verschlossen und. lösbar oder unlösbar festgehalten werden , (s . Fig . 7 , 8) Fig . 4 zeigt eine schlauchförmige Kraftzelle für symmetrisch angeordnete Auflageflächen . Das Zusammenhalten der Schlauchenden erfolgt hier mit einem vorzugsweise mit eingeklemmten Zugband 30 , aus biege-elastischem oder starrem Material .Fig. 3 shows a curved blank shape 20 of the tube, which is pushed and held on line 21 when clamped, as a result of which the excess length 22 is created. This shaping of the tube surface at the ends of the force cells and the cylindrical cell walls 23, 24 lying between them enable the film displacements which partially reside during the lifting movement. to be kept low, which enables the use of thin, high-strength films such as Mylar, Kapton, Melinex, for smaller force cells and hoses wrapped with glass fiber (such as fire hoses) for larger force cells. The end pieces for the cell ends are shown in Fig. 1 and 2, for the bracket part made of sheet metal. In other designs in which bending and pressing is not possible, for example full mounting parts made of metal or plastic, or if the mounting part also has to perform other functions, the hose ends can be used with other means such as caps, clamps, clips and the like. , locked and. detachable or non-detachable, (see Fig. 7, 8) Fig. 4 shows a tubular force cell for symmetrically arranged contact surfaces. The hose ends are held together here with a tension band 30, preferably with a clamped-in, made of flexible or rigid material.
Fig . 5 . Zur Zugentlastung des freiwalkenden Teiles vor den Zellen-ϊEnden wie auch zum mechanischen Schutz der Kraftzellen-Auflagefläche kann ein Schutz¬ band 35 dienen , dessen Enden beispielsweise durch Miteinklemmen , an Zellen-Enden 36 montiert werden .Fig. 5. A protective band 35 can be used to relieve the free-moving part in front of the cell ends as well as to mechanically protect the force cell support surface, the ends of which are mounted on cell ends 36, for example by being clamped together.
Fig . 6 zeigt einen vorgeformten Schlauchkörper aus flacher Folie 40 , ge¬ rundet 41 und mittels Klebeband 42 ,43 zum Schlauch verbunden . Dieses Verfahren kann noch vor dem Zuschneiden der Zellenlänge in einem konti¬ nuierlichen Vorgang erfolgen . Die Verbindungsart kann je nach Eigenschaften des Stoffes , auch durch direktes Kleben von überlappten Schlauchrändern oder deren Verschweissung mittels Hochfrequenz oder Ultraschall , oder auch durch mechanisches Festhalten mittels Noppen , Krallen u . . erfolgen .Fig. 6 shows a preformed tube body made of flat film 40, rounded 41 and connected to the tube by means of adhesive tape 42, 43. This method can be carried out in a continuous process before the cell length is cut. Depending on the properties of the material, the type of connection can also be done by direct gluing of overlapped tube edges or their welding by means of high frequency or ultrasound, or by mechanical holding using knobs, claws and the like. . respectively .
Fig . 7 zeigt einen Bodenbefestigungsteil 50 für die direkte mechanische Be¬ festigung der Schlauchränder, durch Einschnappen oder Ultraschall-schweis- sen . Der Befestigungsteil kann , wie das Beispiel zeigt , auch den Druckmedium anschluss 51 beinhalten . Die Figur zeigt ebenfalls - angedeutet - die durch Ultraschall befestigbaren Endkappen 52 ,53 .Fig. 7 shows a floor fastening part 50 for the direct mechanical fastening of the hose edges, by snapping in or by ultrasonic welding. The fastening part can, as the example shows, also include the pressure medium connection 51. The figure also shows - indicated - the end caps 52, 53 which can be attached by ultrasound.
Fig . 8 zeigt eine Kraftzelle 60 auf einen-. , beispielsweise aus Kunststoff ge¬ spritzten Halterungsteil 61 montiert . Die Kraftzellen-Enden können hier bei¬ spielsweise durch anklebbare oder anschweissbare Kappen , wie Fig . 7 zeigt , oder durch Klemmteile 62 , 63 dicht befestigt werden . Für den dichten Ab- schluss der Zellen-Enden können nach Bedarf zusätzliche aufgetragene oder eingelegte Dichtungsmassen oder Dichtungsteile verwendet werden . (Nicht dargestellt) Fig . 9 zeigt einen einzigen schlauchförmigen Zellenkörper 70 zwischen End- abschlüssen 71 und 72 , beispielsweise um drei simultan wirkende Kraftzellen 73 , 74 , 75 , zu bilden . Die Mediumdruck ührung zwischen den Zellen wird in den durch feste Stützen 76 ,77 gehaltenen Schlauchkanälen ermöglicht . Diese Figur zeigt gleichzeitig die Anwendung der schlauchförmigen Kraftzellen als Antriebe mit dem aktiven Keil 78 (H-STEP-System) einzeln oder mehrfach, wie hier dargestellt .Fig. 8 shows a load cell 60 on a. Mounted, for example, injection molded from plastic bracket 61. The ends of the load cells can here, for example, be glued or welded-on caps, 7 shows, or are tightly fastened by clamping parts 62, 63. For the tight closure of the cell ends, additional applied or inserted sealing compounds or sealing parts can be used as required. (Not shown) Fig. 9 shows a single tubular cell body 70 between end terminations 71 and 72, for example in order to form three simultaneously acting force cells 73, 74, 75. The medium pressure guidance between the cells is made possible in the tube channels held by fixed supports 76, 77. This figure shows at the same time the use of the tubular force cells as drives with the active wedge 78 (H-STEP system) one or more times, as shown here.
Die Ausführungsbeispiele zeigen die Bestandteile in vereinfachter Form , wo¬ bei in der Applikation eine genauere Anpassung der Stützflächen zwischen Kraftzelle , Halterungsteil und Kolbenteil notwendig werden kann . The exemplary embodiments show the components in a simplified form, with a more precise adaptation of the support surfaces between the force cell, the holder part and the piston part being necessary in the application.

Claims

PatentansprücheClaims
1 . Kraftzelle zur Umwandlung von hydrostatischer Energie in mechanische Arbeit , gekennzeichnet durch einen schlauchförmigen Folienteil als Kraftzelle , deren Halterungsteil das zur Hubänderung notwendige Walken der freien Schlauchwände , durch seine Form bestimmt . (Fig . 1 ,2 ,3 ,4 , 8 ,9) . Kraftzelle zur Umwandlung von hydrostatischer Energie in mechanische1 . Power cell for converting hydrostatic energy into mechanical work, characterized by a tubular film part as a power cell, the mounting part of which determines the flexing of the free tube walls necessary for changing the stroke, due to its shape. (Fig. 1, 2, 3, 4, 8, 9). Power cell for converting hydrostatic energy into mechanical
Arbeit dadurch gekennzeichnet , dass die Enden der Schlauchzelle in zwei mit dem Halterungs eil fest oder lösbar verbundene Abschlussteile derart eingefasst sind, dass die für die Hubveränderung notwendigen Ueberlängen durch partielle Vorspannung entstehen . (Fig . 3)Work characterized in that the ends of the hose cell are bordered in two end parts that are fast or detachably connected to the mounting bracket in such a way that the excess lengths necessary for the stroke change are created by partial pretensioning. (Fig. 3)
. Kraftzelle zur Umwandlung von hydrostatischer Energie in mechanische. Power cell for converting hydrostatic energy into mechanical
Arbeit nach Patentanspruch 1 dadurch gekennzeichnet , dass der Halte¬ rungsteil im Zelleninneren angeordnet ist . (Fig . 4)Work according to claim 1, characterized in that the holding part is arranged inside the cell. (Fig. 4)
. Kraftzelle zur Umwandlung von hydrostatischer Energie in mechanische Arbeit , nach Patentanspruch 1 gekennzeichnet durch einen aus flexi¬ bler Folie geformten Schlauchkörper . (Fig . 6). Power cell for converting hydrostatic energy into mechanical work, characterized in accordance with claim 1 by a tubular body formed from flexible film. (Fig. 6)
. Kraftzelle zur Umwandlung von hydrostatischer Energie in mechanische. Power cell for converting hydrostatic energy into mechanical
Arbeit , nach Patentanspruch 4 , gekennzeichnet durch eine mittels Klebemittel verbundene Längsnaht . (Fig . 6)Work according to claim 4, characterized by a longitudinal seam connected by means of adhesive. (Fig. 6)
6 . Kraftzelle zur Umwandlung von hydrostatischer Energie in mechanische6. Power cell for converting hydrostatic energy into mechanical
Arbeit , nach Patentanspruch 4 , gekennzeichnet durch mechanische Mittel zum Dicht- und Festhalten der Längsnahtstelle . (Fig . 7) 7. . Kraftzelle zur Umwandlung von hydrostatischer Energie in mechanische Arbeit , nach Patentanspruch 6 , dadurch gekennzeichnet, dass die mechanischen Mittel gleichzeitig als Druckmediumanschluss dienen . (Fig . 7)Work according to claim 4, characterized by mechanical means for sealing and holding the longitudinal seam. (Fig. 7) 7.. Power cell for converting hydrostatic energy into mechanical work, according to claim 6, characterized in that the mechanical means serve simultaneously as a pressure medium connection. (Fig. 7)
. Kraftzelle zur Umwandlung von hydrostatischer Energie in mechanische Arbeit , nach Patentanspruch 1 , gekennzeichnet durch mindestens ein über die Kraftzelle gespanntes Stützband . (Fig . 5). Load cell for converting hydrostatic energy into mechanical work, according to claim 1, characterized by at least one support band stretched over the load cell. (Fig. 5)
. Kraftzelle zur Umwandlung von hydrostatischer Energie in mechanische Arbeit , nach Patentanspruch 1 , gekennzeichnet durch einen Halterungs¬ teil , dessen Form derart bestimmt ist , dass daran aus einer Kraftzelle mehrere aktive Flächen entstehen . (Fig . 9). A power cell for converting hydrostatic energy into mechanical work, according to claim 1, characterized by a mounting part, the shape of which is determined in such a way that a number of active surfaces arise from a power cell. (Fig. 9)
. Kraftzelle zur Umwandlung von hydrostatischer Energie in mechanische Arbeit , nach Patentanspruch 1 , gekennzeichnet durch mindestens einen, während der Hubbewegung bewegten Teil , welcher mit dem anzutrei¬ benden Teil durch Anliegen, festmontiert oder durch Lagerung ver¬ schiebbar (Fig . 9), wirkverbunden ist . . Power cell for converting hydrostatic energy into mechanical work, according to claim 1, characterized by at least one part which is moved during the lifting movement and which is operatively connected to the part to be driven by contact, fixedly mounted or displaceable by storage (FIG. 9) .
PCT/CH1986/000063 1985-05-13 1986-05-13 Power cell WO1986006802A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2023/85-7 1985-05-13
CH202385 1985-05-13

Publications (1)

Publication Number Publication Date
WO1986006802A1 true WO1986006802A1 (en) 1986-11-20

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WO (1) WO1986006802A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0418679A1 (en) * 1989-09-16 1991-03-27 Herkules Hebetechnik Gmbh Lifting platform for motor vehicles
EP0566905A1 (en) * 1992-04-21 1993-10-27 Hydraulik Techniek Pressure body
DE20205655U1 (en) 2002-04-12 2002-07-04 FESTO AG & Co., 73734 Esslingen Fluid operated contraction drive

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1897870U (en) * 1964-05-08 1964-07-30 Josef Riester PNEUMATIC CUSHION.
DE1729018A1 (en) * 1967-12-27 1971-06-03 Spiess C F & Sohn Process for producing tubes, in particular tube bodies from foils
US3807015A (en) * 1970-12-16 1974-04-30 Ibm Method of making a compact fluid actuator
DE2802716A1 (en) * 1978-01-23 1979-07-26 Horst Jansen Pressure vessel for fluid or paste - is made of fabric material such as fire-hose sealed at ends by clamps
EP0115199A1 (en) * 1982-12-27 1984-08-08 William O. Holmes Hydraulic jack and method for making the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1897870U (en) * 1964-05-08 1964-07-30 Josef Riester PNEUMATIC CUSHION.
DE1729018A1 (en) * 1967-12-27 1971-06-03 Spiess C F & Sohn Process for producing tubes, in particular tube bodies from foils
US3807015A (en) * 1970-12-16 1974-04-30 Ibm Method of making a compact fluid actuator
DE2802716A1 (en) * 1978-01-23 1979-07-26 Horst Jansen Pressure vessel for fluid or paste - is made of fabric material such as fire-hose sealed at ends by clamps
EP0115199A1 (en) * 1982-12-27 1984-08-08 William O. Holmes Hydraulic jack and method for making the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0418679A1 (en) * 1989-09-16 1991-03-27 Herkules Hebetechnik Gmbh Lifting platform for motor vehicles
EP0566905A1 (en) * 1992-04-21 1993-10-27 Hydraulik Techniek Pressure body
DE20205655U1 (en) 2002-04-12 2002-07-04 FESTO AG & Co., 73734 Esslingen Fluid operated contraction drive

Also Published As

Publication number Publication date
EP0221117A1 (en) 1987-05-13

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