EP0812991B1 - Druckmittelbetätigbarer Arbeitszylinder - Google Patents
Druckmittelbetätigbarer Arbeitszylinder Download PDFInfo
- Publication number
- EP0812991B1 EP0812991B1 EP97100210A EP97100210A EP0812991B1 EP 0812991 B1 EP0812991 B1 EP 0812991B1 EP 97100210 A EP97100210 A EP 97100210A EP 97100210 A EP97100210 A EP 97100210A EP 0812991 B1 EP0812991 B1 EP 0812991B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- working cylinder
- cover
- pressure
- longitudinal
- base
- 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 - Lifetime
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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
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2892—Means for indicating the position, e.g. end of stroke characterised by the attachment means
Definitions
- the invention is based on a pressure medium actuable Working cylinder according to the preamble of claim 1 specified genus.
- connection bores are located on this working cylinder for supplying and removing pressure medium in a cover and a bottom that is on the end of the cylinder liner are flanged.
- connection holes are related on the symmetry axes of the outer contour of the cylinder liner in the middle and also in a profile strip and have each an arcuate protruding into the flange surface Bulge that fits into matching recesses in the Protrude cylinder liner.
- connection holes of the connection side of the Short stroke cylinder no longitudinal groove for the attachment of a Signal generator has, because there is no more space for such is available.
- the working cylinder must be in place also be mounted so that for the pneumatic and electrical line connections at the connection bores and at least two on an electrical signal transmitter Outside pages are accessible, which in many use cases but is not possible.
- the four Fixing screws for the lid and the bottom each lie on the corners of a square, on which at the same time the four longitudinal holes for attaching the Working cylinders lie on a machine part.
- fastening screws are complex Designed as an expensive banjo bolt with an internal thread
- the simple attachment of the working cylinder with the Example tie rods complicate and one in diameter require larger designs to get the standardized To accommodate fastening threads in the banjo bolts.
- An anti-rotation device for the piston of the working cylinder is not scheduled.
- DE 35 07 167 C2 is a pneumatic one Compact cylinder known in which a contactless working piston position inquiry with the help of a Piston integrated ring magnet is provided.
- the housing consists of a drawn profile tube in which the piston receiving longitudinal bore inserted a lid and a bottom are, while the connection bores in an axial extending terminal block on the housing.
- a mounting of auto switches this connection side not possible, while at the three other outside of the case with its square Cross-section an installation of signal transmitters in longitudinal grooves is possible is.
- This compact cylinder also needs at least two Outside for the full function of the working cylinder be accessible.
- the working fluid-operated cylinder according to the invention with the characterizing features of claim 1 on the other hand the advantage that it is a series of compact Working cylinders allows in a simple manner have different variants assembled, their Possible uses are more diverse.
- the construction of the Working cylinder is also on a cylinder series applicable with different diameters and different strokes.
- the axial creates a continuous longitudinal groove in the lid and bottom sufficient space to position a Cylinder switch.
- the cylinder also builds space-saving and inexpensive.
- Figure 1 shows a first Embodiment of the working cylinder according to the invention in perspective view
- Figure 2 is an end Side view of the cylinder liner of the working cylinder after Figure 1 on a slightly enlarged scale
- Figure 3 a Front view of a cover of the working cylinder according to the figure 1 in a slightly enlarged scale
- Figure 4 shows a longitudinal section according to IV-IV in Figure 3
- Figure 5 is a plan view of the Cover and Figures 6 to 9 in a simplified representation the profiles for the cylinder liners for a series of Working cylinders for different standard diameters.
- Figure 10 and 11 show a fifth and sixth Embodiment the profiles for the cylinder liner in simplified representation.
- FIG. 1 shows a first exemplary embodiment actuating cylinder 10 in perspective view, due to its low External dimensions are also referred to as compact cylinders, usually works with a small stroke and therefore at cramped space is used.
- the working cylinder 10 consists essentially of a Cylinder bushing 11 made of drawn profile tube with a suitable one Cross-section through a cover 12 and a front Floor 13 is closed and an interior 14th forms, in which an axially guided piston 15 sliding is stored.
- the piston 15 is with a piston rod 16 connected, which protrudes through the cover 12 to the outside.
- the lid 12 and the bottom 13 are each by three commercially available fastening screws 17 on the Screwed cylinder sleeve 11, the Fixing screws on the cover 12 and on the bottom 13 coaxial to each other and with respect to the longitudinal axis of the Working cylinder 10 on the same diameter are arranged, but on the circumferential direction are distributed unevenly.
- the working cylinder 10 has essentially one square outer contour with the corners flattened are. This outer contour is for the cylinder liner 11 Cover 12 and the bottom 13 run the same.
- FIG. 2 are the two axes of symmetry for this outer contour indicated with 18 and 19, which the cross section of the Split cylinder liner 11 into four quadrants 21 to 24. It can be seen particularly clearly in FIG.
- connection side 25 of the working cylinder 10 in the first Quadrant 21 and in the fourth quadrant 24 extends and in this connection side 25 in the fourth quadrant 24 laterally a longitudinal groove 26 runs offset to the axis of symmetry 18, which is used to attach auto switches.
- this longitudinal groove 26 runs over the whole Length of the working cylinder 10 and also penetrates the Cover 12 and the bottom 13.
- connection side 25 in the area of the cover 12 a first Connection bore 27 and a second in the area of the bottom 13 Connection bore 28 formed.
- connection bores 27, 28 are with the chambers on both sides of the piston 15 in Connection so that each side of the piston 15 with compressed air can be acted upon or relieved.
- connection hole 27, like the connection bore 28, is laterally offset to the axis of symmetry 18 and also in the first quadrant 21, such as this is particularly evident from FIG. 1 in conjunction with FIG 3, which is a front view of the cover 12 shows.
- This asymmetrical arrangement of the Connection bores 27, 28 can also be in the connection side 25
- a longitudinal groove 26 can be arranged, the Connection side 25 itself can be designed as a flat surface can.
- 11 are in the cylinder liner Fasten the screws 17 three longitudinal holes 33 so arranged that they in the first quadrant 31 between Mounting hole 32 and axis of symmetry 19, in the second quadrant 22 between mounting hole 32 and axis of symmetry 18 and in fourth quadrant 24 between mounting hole 32 and Axis of symmetry 19.
- the Working cylinder 10 which is within a series for the A standard diameter of 32 mm is provided secure and stable attachment of cover 12 and base 13 to reach.
- the cylinder liner 11 is in this way an extruded tubular material, especially one Profile tube, producible, the length of the cylinder liner 11 so selected when cutting a rod-shaped material is that a desired stroke is achieved. For the production of the working cylinder 10 are therefore on the profile tube existing cylinder liner 11 no additional Operations required.
- FIG. 3 shows a front view of the cover 12 Figure 1
- Figure 4 shows a longitudinal section according to IV-IV in Figure 3 shows
- Figure 5 is a plan view of the lid according to Figure 3.
- the lid 12 from the outer End face 34 from axially offset inward Clamping surfaces 35 formed in each of the four Quadrants 21 to 24 at least the mounting holes 32 include and additionally in the first, second and fourth Quadrant the longitudinal bores 33 for screw fastening include and also limited by a longitudinal groove 31 become.
- the clamping surfaces 35 are so deep that the Heads of the fastening screws 17 relative to the end face 34 are arranged sunk.
- the mounting holes 32 can be provided with a thread in the area of the cover 12, with the help of the working cylinder 10 during assembly is screwable.
- FIG. 4 also shows Connection bore 27 in the cover 12 via a bore 36 with a chamber inside the working cylinder 10 in Connection so that pressure medium acts on the piston 15 can or can be relieved.
- the lid 12 has its opposite to the end face 34 Flange surface 37 slightly opposite the flange surface 37 projecting annular collar 38 with which the lid 12 in the interior 14 of circular cross section Cylinder sleeve 11 is centered.
- the federal government 38 is one Surround annular groove 39 for receiving an O-ring, which at Assembly of cover 12 and cylinder liner 11 for one provides a secure seal.
- the bottom 13 is in a similar manner to the cover 12 trained, accordingly has comparable clamping surfaces 35 and a corresponding hole for connecting the second Connection bore 28 with the interior 14. Instead of one The bottom 13 can be guided through a piston rod to be introverted.
- a magnet not shown arranged, with the help of the piston position in Working cylinder 10 is to be determined.
- the operation of the working cylinder 10 is in itself known, this as a single-acting or double acting short stroke cylinder can be operated.
- the working cylinder 10 has detection of the piston position on all of its long sides 29 including the Connection side 25 has a continuous longitudinal groove 26, 31 in the known signal generator can be attached.
- These signal transmitters can be used as magnetic field switches Reed switch or trained in any other way his.
- the longitudinal grooves 26, 31 are also in the cover 12 and Floor 13 formed continuously, so as to have the necessary space for positioning the signal generator.
- connection side 25 of the Working cylinder 10 thus offers space for Pressure medium connections on the working cylinder 10 and also space for fastening and connecting one electromagnetic cylinder switch. It can therefore full function of the working cylinder 10 can be used, if its accessibility is only on the connection side 25 is limited.
- Figures 6 to 9 show the application of Construction according to the invention on a series of Working cylinders with different diameters, whereby 8 shows the first embodiment of Figure 1 and 2 corresponds and the conditions at the cylinder liner 11 with a standard diameter of 32 mm.
- FIG. 6 shows a second way accordingly Embodiment the conditions on a cylinder liner 41 for a standard diameter of 20 mm
- Figure 7 die Cylinder liner 42 from a third embodiment for a standard diameter of 25 mm
- Figure 9 die Cylinder liner 43 from a fourth embodiment for a standard diameter of 40 mm.
- the fourth cylinder liner 43 differs from that first cylinder liner 11 according to Figure 8 mainly in that now for the fastening screws 17 four through Longitudinal bores 33 are provided which directly on the Axes of symmetry 18 and 19 lie. While in the Connection side 25 of the working cylinder 10 the continuous Longitudinal groove 26 and the connection bores 27 and 28, respectively off-center and on opposite sides of the Axis of symmetry 18 are on the remaining three Long sides 29 each have two longitudinal grooves 31 symmetrical to the Symmetry axes 18 and 19 arranged. Not closer to them drawn lids and bottoms for the second, third and fourth embodiment of the working cylinder must through holes, grooves and clamping surfaces accordingly adapted to the design of the cylinder liners 41 to 43 be like this in principle in the first embodiment 10 is shown and described.
- Figures 10 and 11 show a fifth and sixth, respectively Embodiment of a working cylinder the conditions on a fifth (45) or sixth cylinder liner 46, corresponding to Figures 7 and 9.
- the fifth and sixth Cylinder bushing 45, 46 enables compared to the third and fourth cylinder liner 42 and 43 especially one lighter and cheaper construction as well as an increased Symmetry.
- four assembly through holes 47 are no longer round, but carried out with a shape-adjusted cross-section.
- This form-fitting cross section extends between each the now rounded corner of the outer contour, the interior 14, the longitudinal bore 33 and the longitudinal groove 26 and 31 respectively Larger, more form-fitting compared to the round mounting hole Cross section serves to save weight and thus the Cost reduction. Furthermore, when using a Protection against rotation by suitable positioning of Anti-rotation bars a boring of the drawn Avoid mounting through holes 47 so that any Profile editing is not necessary.
- the fifth cylinder liner 45 is with its profile preferably for the standard diameter according to FIG. 6 and FIG 7 suitable.
- the longitudinal bore 33 is always four times available, one per quadrant 21-24, this one Longitudinal bores 33 are arranged rotationally symmetrically.
- the lid has only two Screws is fastened in two of these longitudinal bores 33.
- the Longitudinal grooves 26, 31 have a center offset.
- All quadrants 21-24 are one below the other. trained congruently; it can therefore be an assembly of the Cover rotated by 90 degrees.
- One with you longitudinal bore 33 not required can also be used as an air duct Serve pressure supply of an opposite chamber.
- the sixth cylinder liner 46 is for one Standard diameter as provided in Figure 9.
- the Longitudinal bores 33 no longer lie on the axes of symmetry and are arranged rotationally symmetrical.
- the longitudinal grooves 31 are arranged in two, what with short strokes the arrangement of two cylinder switches allowed on the same side. Except for each second of the longitudinal grooves 31 has the sixth cylinder liner 46 a symmetry similar to the fifth cylinder liner 45 on.
- Both cylinder liners 45, 46 according to Figures 10 and 11 have the Advantage that they are particularly suitable for anti-rotation own. Due to the rounded corners and the form-fitting Mounting through holes result in a sufficiently large one Cross section, so that two circular in the lid Guide bushings can be arranged, which in the Assembly through holes 47 can survive without them touch.
- the in the guide bushings, in Figure 11 shown in simplified form with 48, guided Anti-rotation bars are external through a yoke connected to each other and to the piston rod 16 and result in an anti-rotation device for the longitudinally movable Piston 15. The location of these guide bushings in the cover can therefore be chosen more freely; the anti-rotation device for the Piston 15 can be machined on the cylinder liner 45, 46 are executed.
- the clamping surfaces 35 3 also formed by annular depressions are so that the mounting holes 32 substantially of are surrounded by a web of material.
- the longitudinal grooves can also 31 run at a distance from the clamping surfaces 35, so that a web of material remains between the two.
- radial arrangement of the bore 36 according to Figure 4 can also an axial bore arrangement can be selected.
- the training with assembly through holes can be even with a cylinder liner with the standard diameter Apply Figure 8.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Description
Claims (15)
- Druckmittelbetätigbarer Arbeitszylinder (10), insbesondere pneumatischer Kompaktzylinder, mit einer an ihren beiden axialen Enden mit Deckel (12) und Boden (13) versehenen Zylinderbuchse (11) aus Profilrohr, in deren Innenraum (14) ein in axialer Richtung beweglicher Kolben (15) geführt ist, der mit einer den Deckel (12) durchdringenden Kolbenstange (16) verbunden ist und mit an Außenseiten (25,29) des Arbeitszylinders (10) angeordneten, axial verlaufenden Längsnuten (26,31) zur Befestigung von Signalgebern, wobei die durchgehenden Längsnuten (26,31) sich über die Zylinderbuchse (11) hinaus auch in Deckel (12) und Boden (13) erstrecken, deren Außenkonturen im wesentlichen derjenigen des Profilrohrs der Zylinderbuchse (11) entsprechen und mit Befestigungsschrauben (17), welche den Deckel (12) und den Boden (13) an der Zylinderbuchse (11) halten sowie mit je einer Anschlußbohrung (27,28) im Deckel (12) und im Boden (13) zum Beaufschlagen und Entlasten der beiden Seiten des Kolbens (15) mit Druckmittel, die auf einer gemeinsamen Anschlußseite (25) des Arbeitszylinders (10) liegen, dadurch gekennzeichnet, daß der Arbeitszylinder (10) an seinem Außenumfang auf der Anschlußseite (25) eine durchgehende Längsnut (26) aufweist und daß diese Längsnut (26) einerseits und die Anschlußbohrungen (27, 28) im Deckel (12) und Boden (13) andererseits relativ zur Symmetrieachse (18) der Außenkontur des Profilrohrs außermittig und auf entgegengesetzten Seiten angeordnet sind.
- Druckmittelbetätigbarer Arbeitszylinder nach Anspruch 1, dadurch gekennzeichnet, daß der Arbeitszylinder (10) eine im wesentlichen rechteckige, insbesondere quadratische Außenkontur aufweist, von der jede der vier Seiten (25, 29) mindestens eine Längsnut (26, 31) aufweist.
- Druckmittelbetätigbarer Arbeitszylinder nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß im Profilrohr der Zylinderbuchse (11, 41 bis 46) sowie im Deckel (12) und Boden (13) auf den Ecken eines Rechtecks, insbesondere eines Quadrats liegende, axial durchgehende Montagedurchgangslöcher (32, 47) zur Befestigung des Arbeitszylinders (10) angeordnet sind und daß für die Befestigung von Deckel (12) und Boden (13) an der Zylinderbuchse (11, 41 bis 46) mindestens je zwei, axial verlaufende Befestigungsschrauben (17) angeordnet sind, die im Abstand zu den Montagedurchgangslöchern (32, 47) liegen.
- Druckmittelbetätigbarer Arbeitszylinder nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Arbeitszylinder (10) an seinem Außenumfang auf jeder Seite (25, 29) eine einzige, außermittig zu den Symmetrieachsen (18, 19) der Außenkontur des Profilrohrs liegende Längsnut (26, 31) aufweist, wobei die Längsnuten (26, 31) paarweise in diametral zueinander liegenden Quadranten (22, 24) angeordnet sind, wie sie von den beiden Symmetrieachsen (18, 19) der Außenkontur gebildet werden, während in den beiden anderen Quadranten (21, 23) je eine Längsbohrung (33) für eine Befestigungsschraube (17) angeordnet ist, die insbesondere diametral zueinander liegen.
- Druckmittelbetätigbarer Arbeitszylinder nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Arbeitszylinder (10) an seinem Außenumfang auf jeder Seite (25, 29) eine einzige, außermittig zu den Symmetrieachsen (18, 19) der Außenkontur des Profilrohrs liegende Längsnut (26, 31) aufweist, wobei die Längsnuten (26, 31) in den von den Symmetrieachsen (18, 19) gebildeten, drei Quadranten (22 bis 24) liegen, welche nicht die Anschlußbohrung (27) enthalten, wobei einer dieser Quadranten (23), dem keine Befestigungsschraube (17) zugeordnet ist, zwei Längsnuten (31) aufweist.
- Druckmittelbetätigbarer Arbeitszylinder nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Arbeitszylinder (10) für den Deckel (12) und den Boden (13) jeweils vier Befestigungsschrauben (17) aufweist, die rotationssymmetrisch zu den Symmetrieachsen (18, 19) der Außenkontur des Profilrohres liegen und daß in den neben der Anschlußseite (25) anderen drei Längsseiten (29) jeweils zwei, rotationssymmetrisch liegende Längsnuten (31) angeordnet sind.
- Druckmittelbetätigbarer Arbeitszylinder nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Deckel (12) und/oder der Boden (13) für die versenkte Aufnahme der Köpfe der Befestigungsschrauben (17) gegenüber der außenliegenden Stirnfläche (34) versenkte Spannflächen (35) aufweist, die jeweils eine angrenzende Montagebohrung (32) mitumschließen.
- Druckmittelbetätigbarer Arbeitszylinder nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Deckel (12) und/oder der Boden (13) aus einem im wesentlichen scheibenförmigen Grundkörper bestehen.
- Druckmittelbetätigbarer Arbeitszylinder nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Zylinderbuchse (11, 41-46), der Deckel (12) und der Boden (13) die gleiche Außenkontur aufweisen, die insbesondere im wesentlichen quadratisch mit abgeschrägten bzw. abgerundeten Ecken ist.
- Druckmittelbetätigbarer Arbeitszylinder nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Anschlußfläche (25) eine ebene Fläche bildet und insbesondere die anderen drei Längsseiten (29) gleichfalls ebene Flächen aufweisen.
- Druckmittelbetätigbarer Arbeitszylinder nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß der Deckel (12) und/oder der Boden (13) einen ringförmigen Bund (38) aufweisen, mit dem sie in dem Innenraum (14) der Zylinderbuchse (11) zentriert sind, der einen kreisförmigen Querschnitt aufweist.
- Druckmittelbetätigbarer Arbeitszylinder nach einem oder mehreren der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die Montagedurchgangslöcher (47) in der Zylinderbuchse (45, 46) formangepaßt zwischen der Außenkontur, dem Innenraum (14), der Längsnut (26, 31) und der Längsbohrung (33) ausgebildet sind.
- Druckmittelbetätigbarer Arbeitszylinder nach einem oder mehreren der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß in der Zylinderbuchse (45, 46) vier Montagedurchgangslöcher (47), vier Längsbohrungen (33) und mindestens vier Längsnuten (26, 31) jeweils rotationssymmetrisch untereinander angeordnet sind.
- Druckmittelbetätigbarer Arbeitszylinder nach Anspruch 13, dadurch gekennzeichnet, daß die vier Quadranten (21 bis 24) der Zylinderbuchse (45) hinsichtlich Montagedurchgangsloch (47), Längsbohrung (33) und Längsnut (26, 31) untereinander deckungsgleich ausgebildet sind.
- Druckmittelbetätigbarer Arbeitszylinder nach einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, daß im Deckel (12) oder Boden (13) mindestens eine Führungsbuchse (48) angeordnet ist, in der eine Verdrehsicherungsstange einer Verdrehsicherung für den Kolben (15) geführt ist, und daß diese Führungsbuchse (48) frei in ein Montagedurchgangsloch (47) der Zylinderbuchse ragt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19623757A DE19623757A1 (de) | 1996-06-14 | 1996-06-14 | Druckmittelbetätigbarer Arbeitszylinder |
DE19623757 | 1996-06-14 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0812991A2 EP0812991A2 (de) | 1997-12-17 |
EP0812991A3 EP0812991A3 (de) | 1998-07-22 |
EP0812991B1 true EP0812991B1 (de) | 2001-10-10 |
Family
ID=7796952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97100210A Expired - Lifetime EP0812991B1 (de) | 1996-06-14 | 1997-01-09 | Druckmittelbetätigbarer Arbeitszylinder |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0812991B1 (de) |
DE (2) | DE19623757A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10112637A1 (de) * | 2001-03-14 | 2002-09-19 | Continental Teves Ag & Co Ohg | Aus einem Strang abgeschnittenes Rohteil f. einen Hauptzylinder sowie hieraus gefertigter Hauptzylinder |
DE102008036230B4 (de) * | 2008-08-02 | 2010-07-01 | Nordex Energy Gmbh | Verfahren zur Montage einer Rotornabe an einer Rotorwelle einer Windenergieanlage und Windenergieanlage |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2425567A1 (fr) * | 1978-05-12 | 1979-12-07 | Outillage Air Comprime | Verin |
DE3507167C3 (de) | 1985-03-01 | 1996-06-13 | Festo Kg | Kolben-Zylinder-Anordnung |
GB2230385B (en) * | 1989-04-08 | 1993-10-13 | Festo Kg | A control device |
EP0692635B1 (de) | 1990-03-27 | 1999-09-08 | Balzers und Leybold Deutschland Holding Aktiengesellschaft | Mehrstufige trockenverdichtende Vakuumpumpe und Verfahren zu ihrem Betrieb |
DE9309589U1 (de) * | 1993-06-29 | 1994-02-24 | A. Römheld GmbH & Co KG, 35321 Laubach | Blockzylinder mit Positionskontrolle |
IT233859Y1 (it) * | 1994-07-13 | 2000-02-10 | Luciano Migliori | Cilindro pneumatico compatto |
DE4438164A1 (de) * | 1994-10-26 | 1996-05-02 | Festo Kg | Antriebsvorrichtung |
-
1996
- 1996-06-14 DE DE19623757A patent/DE19623757A1/de not_active Withdrawn
-
1997
- 1997-01-09 EP EP97100210A patent/EP0812991B1/de not_active Expired - Lifetime
- 1997-01-09 DE DE59704837T patent/DE59704837D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0812991A3 (de) | 1998-07-22 |
DE19623757A1 (de) | 1997-12-18 |
EP0812991A2 (de) | 1997-12-17 |
DE59704837D1 (de) | 2001-11-15 |
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