EP1510700A1 - Linearstellelement - Google Patents
Linearstellelement Download PDFInfo
- Publication number
- EP1510700A1 EP1510700A1 EP04017809A EP04017809A EP1510700A1 EP 1510700 A1 EP1510700 A1 EP 1510700A1 EP 04017809 A EP04017809 A EP 04017809A EP 04017809 A EP04017809 A EP 04017809A EP 1510700 A1 EP1510700 A1 EP 1510700A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- linear actuator
- actuator according
- connection element
- connection
- expansion
- 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
- 239000000463 material Substances 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 241001136792 Alle Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
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
- F15B15/1423—Component parts; Constructional details
- F15B15/1476—Special return means
-
- 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
- F15B15/103—Characterised by the construction of the motor unit the motor being of diaphragm type using inflatable bodies that contract when fluid pressure is applied, e.g. pneumatic artificial muscles or McKibben-type actuators
-
- 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
- F15B15/24—Other details, e.g. assembly with regulating devices for restricting the stroke
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/22—Joints and connections with fluid pressure responsive component
Definitions
- Such a telescopic cylinder is only for a corresponding space permitting facilities can be used, but not in confined spaces.
- the guide surfaces are exposed on the outside, so that environmental influences can negatively affect the function.
- WO 85/00203 A1 relates to a valve system with a hydraulic power drive to open the valve.
- This power drive comprises a linear actuator that between a shortened retraction position and a prolonged extended position along a longitudinal axis is adjustable. It comprises a first connection element in Shape of a rod with a cover plate and a second connecting element the also designed as a rod and is provided with a cover plate. Between Both end plates are provided with a bellows. The bellows encloses together with the two end plates a pressure chamber, which with a Connecting line for pressurization and pressure relief is provided, the passes through the second connection element.
- a support element in Form of a tube provided that firmly connected to the first connection element is and slidably guided on the second rod-shaped connection element is. It supports the bellows on the outside.
- the pressurization of the bellows is converted into an axle extension of the same.
- Bellows experienced an extension just by unfolding the individual folds, which for the extension provide the required material. This becomes especially clear when, like proposed the bellows should be made of metal. Because the bellows itself can generate no axial forces and thus no provision in the retracted position can effect, the pressure acting on the valve body is used, to push the bellows back into the retracted position.
- This adjusting device further consists in that bellows for the provision the extension must either build large radially to the necessary To provide pleat lengths or have correspondingly a large number of pleats need, as correspondingly smaller diameter correspondingly more Wrinkles are required, resulting in a corresponding increase in the installation length leads.
- DE 10053846 A1 describes a piston-cylinder unit, in which a central in the hollow piston rod arranged holding element limits the extension length thereby, that the piston against a stop on the rod-shaped holding element comes to the plant.
- the rod-shaped retaining element is threaded provided and with this in a hole in the head cover of the cylinder housing screwed. It is guided by the head cover of the cylinder to the outside and can be rotationally applied to adjust the extension length.
- the At the end of the rod-shaped retaining element provided stop occurs exclusively in contact with the piston and takes over except the limitation the extension length no other functions.
- the invention has for its object to provide a linear actuator, the builds small and despite small dimensions in the retracted position a relatively large Extension length and its adjustment even in unfavorable environmental conditions and installation conditions is not adversely affected.
- An advantage of this design is that a hermetically sealed linear actuator is achieved, the unfavorable environmental conditions, for example when using agricultural machinery or tractors in the field are not on the Function of the control element itself. It is hermetically sealed to the outside, so that even when used on the field, the function even when weaning is not adversely affected by dirt or freezing wetness.
- the expansion element is supported in the radial direction, so that when pressurized only the possibility of axial expansion along the longitudinal axis is given.
- the retraction force is due to the elastic stretching of the expander i. the wall itself generates, so that the linear actuator its retraction position solely under the return effect of the elasticity of the expansion element can take.
- the pressure medium is either compressed air or even hydraulic fluid in question.
- the connecting line through a passage bore of the first connection element or a in this einitzendes Pipe element is shown.
- a tubular element if, for example, the associated connection element into which the pipe element is used, consists of a plastic or of a material that the corresponds to the expansion element, but has a greater hardness.
- an extension in the extended position limiting Holding element arranged, on the one hand with the first connection element and on the other hand connected to the second connection element.
- this Holding element do not take on another function, so for example, a sufficient Tension element in the form of a rope, wire or the like.
- the retaining element in addition, for example, a support function for the expansion element against Take over buckling, it makes sense, this telescopically extendable and shortenable train.
- the holding element preferably guided one inside the other Telescopic tubes and a telescopic rod, their movement along the longitudinal axis is limited to each other. Another advantage of this training is that a large stroke can be achieved with a small installation length.
- the support element is designed as a helically wound spiral, which is arranged around the outer surface of the expansion element and not even Exerts spring action, i. no pulling force applies.
- a first spiral end and a second spiral end serve for connection to the first connection element or second connection element.
- a first spiral end and a second spiral end serve for connection to the first connection element or second connection element.
- the spiral can also be designed as a spiral spring. When pressurizing the Pressure space experiences the spiral spring together with the expansion element along the Longitudinal axis an extension in the direction of the extended position and is doing biased. This bias can at pressure relief of the pressure chamber the Return of the expansion element or the linear actuator to the retraction position support. But it can also serve as a support member a pipe, in particular telescopic tube, be provided, which encloses the expansion element and this opposite low-friction is performed, d. H. its surface in relation to the expansion element only one has low friction.
- a compact design results when, for example, the first telescopic tube sitting on the first connection element and only then the expansion element with his first end portion is set. The attachment to the first connection element takes place so with the interposition of the telescopic tube.
- this associated pipe element in which the angled end the winding of the coil spring is placed around the tubular element.
- the expansion element consists of a rubber material, the soft and is elastic.
- connection elements can consist essentially of the same material as the expansion element, but have a greater hardness. However, it is also possible that the connection elements made of metal or plastic.
- expansion element and the connection elements are made of the same material, it is possible, for example, at least one of the expansion elements associated with it Make connection element in one piece.
- a preferred embodiment of the invention is schematically in the drawing shown.
- the linear actuator is shown in the retracted position.
- Figure 2 is the linear actuator in solid lines in the retracted position with the length L between the connection holes and beyond schematically by dotted lines extended to the length L1 shown when pressurized.
- the linear actuator comprises a first connection element 1, which with a transverse to the longitudinal axis X extending mounting hole 2 is provided to the first connection element 1 to a component on which it is supported to set.
- the first connection element 1 has a projection 3, which with a centrally on the Longitudinal axis X arranged central bore 4 is provided, in which one from the outside introduced oblique bore 5 opens.
- a pipe element 6 is inserted, which is open to the outside environment and to the central bore 4.
- the Outer surface of the projection 3 forms a circular cylindrical seat surface. 7
- the linear actuating element further comprises a second connecting element 8, which has a fastening bore 9, which also extends transversely to the longitudinal axis X. outgoing from the mounting hole 9 remote end face of the second connection element 8, a bore 10 is introduced.
- the section of the second connection element 8, which forms the outer surface toward the bore 10, is circular cylindrical Seat 11 designed.
- a holding element 12 is effective between the first connection element 1 and the second connection element 8 .
- the first telescopic tube 13 has this a diameter-expanded seat portion 14.
- the seat portion 14th The distal end of the first telescopic tube 13 is provided with an inwardly directed collar 15, which projects in the direction of the longitudinal axis X.
- a second telescopic tube 16 is limitedly movable added to the first telescopic tube 13. It has an enlarged diameter Pipe end 17, with it in the retracted position of the linear actuator itself supported against the end face of the projection 3 of the first connection element 1 can. This pipe end 17 is enlarged so that when extending the pipe end 17th comes to rest against the collar 15 of the first telescopic tube 13.
- the second connection element 8 is a telescopic rod 19 associated with a portion 20 in the bore 10 of the second connection element 8 is seated, and pressed into it, glued or threaded, the bore 10 as Tapped hole is designed, is fixed.
- This section 20 is removed the telescopic rod 19 provided with a diameter-enlarged collar 21, the when extending against the inward, i. on the longitudinal axis X to, directed collar 18 of the second telescopic tube 16 comes to rest, so that in total in the full extension position, the extension length L1, starting from the insertion length L, mechanically is limited by the retaining element 12 and additionally the expansion element 22nd is supported against buckling.
- tubular expansion element 22 with a smooth inner and outer surface provided, which consists of a material having an elastic extension and shortening of the same allowed and beyond air or liquid tight.
- This tubular expansion element 22 sits tightly with its first end portion 23 on the seat portion 14 of the first telescopic tube 13, which in turn with this seat portion 14 on the seat surface 7 of the first connection element 1 tight sitting.
- the compound may, for example, if a rubbery material for the expansion element 22 is used by vulcanization to the first telescopic tube 13 done. But it is also an adhesive connection or attachment by means a support ring, which acts on the expansion element 22 radially, conceivable.
- the second End portion 24 of the expansion element 22 is seated on the seat surface 11 of the second connection element 8. It is also tightly and firmly connected to this.
- a pressure chamber 29 educated between the inner surface of the tubular expansion element 22 and the first Connection element 1 and the second connection element 8.
- the outer surface 25 of the expansion element 22 is supported by a support element in the form of a coil spring 26, which has a low pitch, allowing many turns are present, enclosed.
- the first spring end 27 of this as a spiral spring 26 is fixed to the tubular element 6 of the first connection element 1.
- the second spring end 28 of the coil spring 26 is at a shoulder of the second connection elements 8 set.
- the linear actuator is, for example from the extension length L1 to the retraction position with the installation length L elastically returned.
- the coil spring 26 can support the return movement.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Actuator (AREA)
- Fluid-Damping Devices (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
- einem ersten Anschlusselement,
- einem zweiten Anschlusselement,
- einem in seiner Länge veränderbaren Element, das zusammen mit den Anschlusselementen einen Druckraum umgrenzt, welcher mit einer Verbindungsleitung zur Druckbeauschlagung und Druckentlastung verbunden ist,
- einem Stützelement, dass das Element außen stützt.
- dass das in seiner Länge veränderbare Element einschlauchförmiges Dehnelement
ist,
- das durch elastische Dehnung verlängerbar sowie luft- oder flüssigkeitsdicht ist,
- das an seinem ersten Endabschnitt mit dem ersten Anschlusselement und an seinem zweiten Endabschnitt mit dem zweiten Anschlusselement dicht verbunden ist und
- das eine Außenfläche aufweist,
- dass das Stützelement die Außenfläche des Dehnelementes umschließt,
- dass ein Haltelement vorgesehen ist,
- das die Verlängerung des Drehelementes in die Ausfahrposition begrenzt.
- Figur 1
- eine Ansicht des Linearstellelementes in der Einfahrposition,
- Figur 2
- einen Längsschnitt durch das Linearstellelement und
- Figur 3
- eine Draufsicht zur Figur 1.
- 1
- erstes Anschlusselement
- 2
- Befestigungsbohrung
- 3
- Ansatz
- 4
- Zentralbohrung
- 5
- Schrägbohrung
- 6
- Rohrelement
- 7
- Sitzfläche
- 8
- zweites Anschlusselement
- 9
- Befestigungsbohrung
- 10
- Bohrung
- 11
- Sitzfläche
- 12
- Halteelement
- 13
- erstes Teleskoprohr
- 14
- Sitzabschnitt
- 15
- Kragen
- 16
- zweites Teleskoprohr
- 17
- Rohrende
- 18
- Kragen
- 19
- Teleskopstange
- 20
- Abschnitt
- 21
- Bund
- 22
- Dehnelement
- 23
- erster Endabschnitt
- 24
- zweiter Endabschnitt
- 25
- Außenfläche
- 26
- Stützelement / Spirale
- 27
- erstes Spiralenende
- 28
- zweites Spiralenende
- 29
- Druckraum
Claims (13)
- Linearstellelement,
das zwischen einer verkürzten Einfahrposition (Länge L) und einer verlängerten Ausfahrposition (Länge L1) entlang einer Längsachse (X) längenmäßig verstellbar ist, miteinem ersten Anschlusselement (1),einem zweiten Anschlusselement (8),
einem in seiner Länge veränderbaren Element (22), das zusammen mit den Anschlusselementen (1,8) einen Druckraum (29) umgrenzt, welcher mit einer Verbindungsleitung (6) zur Druckbeauschlagung und Druckentlastung verbunden ist,einem Stützelement (26), dass das Element (22) außen stützt,dass das in seiner Länge veränderbare Element ein schlauchförmiges Dehnelement (22) ist,das durch elastische Dehnung verlängerbar sowie luft- oder flüssigkeitsdicht ist,das an seinem ersten Endabschnitt (23) mit dem ersten Anschlusselement (1) und an seinem zweiten Endabschnitt (24) mit dem zweiten Anschlusselement (8) dicht verbunden ist unddas eine Außenfläche (25) aufweist,dass das Stützelement (26) die Außenfläche (25) des Dehnelementes (22) umschließt,dass ein Haltelement (12) vorgesehen ist,das die Verlängerung des Dehnelementes (22) in die Ausfahrposition begrenzt. - Linearstellelement nach Anspruch 1,
dadurch gekennzeichnet, dass die Verbindungsleitung durch eine Durchlassbohrung des ersten Anschlusselementes oder ein in diesem einsitzendes Rohrelement (6) dargestellt ist. - Linearstellelement nach Anspruch 1,
dadurch gekennzeichnet, dass das die Verlängerung in die Ausfahrposition begrenzende Halteelement (12) in dem Druckraum (29) angeordnet ist. - Linearstellelement nach Anspruch 1,
dadurch gekennzeichnet, dass das Halteelement (12) einerseits mit dem ersten Anschlusselement (1) und andererseits mit dem zweiten Anschlusselement (8) verbunden ist. - Linearstellelement nach Anspruch 1,
dadurch gekennzeichnet, dass das Halteelement (12) teleskopisch verlänger- und verkürzbar ausgebildet ist . - Linearstellelement nach Anspruch 5,
dadurch gekennzeichnet, dass das Halteelement (12) ineinander geführte Teleskoprohre (13, 16) und eine Teleskopstange (19) umfasst, deren Bewegung entlang der Längsachse (X) zueinander begrenzt ist. - Linearstellelement nach Anspruch 5,
dadurch gekennzeichnet,
das das Halteelement (12) das Dehnelement (22) gegen seitliches Ausknicken stützt. - Linearstellelement nach Anspruch 1,
dadurch gekennzeichnet, dass das Stützelement als schraubenlinienförmig gewickelte Spirale (26) gestaltet ist, die um die Außenfläche (25) des Dehnelements (22) angeordnet ist, die ein erstes Spiralende (27) und ein zweites Spiralende (28) aufweist, wobei das erste Spiraldende (27) mit dem ersten Anschlusselement (1) und das zweite Spiralende (28) mit dem zweiten Anschlusselement (8) verbunden ist. - Linearstellelement nach Anspruch 7,
dadurch gekennzeichnet, dass die Spirale (26) als Spiralfeder ausgebildet ist, die bei Druckbeaufschlagung des Druckraums (29) zusammen mit dem Dehnelement (22) entlang der Längsachse (X) eine Verlängerung zur Ausfahrposition erfährt und dabei vorgespannt wird und
die bei Druckentlastung des Druckraums (29) eine Rückführung zur Einfahrposition unterstützt. - Linearstellelement nach Anspruch 5,
dadurch gekennzeichnet, dass das Dehnelement (22) unter Zwischenschaltung eines Teleskoprohres (13) mit dem ersten Anschlusselement (1) dicht verbunden ist. - Linearstelleelement nach Anspruch 7,
dadurch gekennzeichnet, dass das erste Federende (27) an dem dem ersten Anschlusselement (1) zugeordneten Rohrelement (6) festgelegt ist. - Linearstelleelement nach Anspruch 1,
dadurch gekennzeichnet, dass das Dehnelement (22) aus einem elastischen Gummiwerkstoff besteht. - Linearstelleelement nach Anspruch 1,
dadurch gekennzeichnet, dass die Anschlusselemente (1, 8) aus Metall oder Kunststoff bestehen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10339819 | 2003-08-27 | ||
DE10339819A DE10339819A1 (de) | 2003-08-27 | 2003-08-27 | Linearstellelement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1510700A1 true EP1510700A1 (de) | 2005-03-02 |
EP1510700B1 EP1510700B1 (de) | 2006-10-04 |
Family
ID=34089253
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04017809A Expired - Lifetime EP1510700B1 (de) | 2003-08-27 | 2004-07-28 | Linearstellelement |
Country Status (5)
Country | Link |
---|---|
US (1) | US20050047849A1 (de) |
EP (1) | EP1510700B1 (de) |
JP (1) | JP2005069487A (de) |
BR (1) | BRPI0403593A (de) |
DE (2) | DE10339819A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011121882B4 (de) * | 2011-12-21 | 2019-11-28 | Festo Ag & Co. Kg | Arbeitsvorrichtung mit mindestens einem Membranaktor |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB697707A (en) * | 1950-12-21 | 1953-09-30 | American Steel Foundries | Improvements in a fluid pressure responsive device |
US5201262A (en) * | 1989-06-20 | 1993-04-13 | Bridgestone Corporation | Actuator using elastic extensible member |
JPH06159325A (ja) * | 1992-11-13 | 1994-06-07 | Ckd Corp | 直進形柔軟アクチュエータ |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8003846U1 (de) * | 1980-02-14 | 1980-05-29 | Maschinenfabriken Bernard Krone Gmbh, 4441 Spelle | Hydraulisch oder pneumatisch betätigte einfachwirkende Kolben-Zylinder-Anordnung |
SE441546B (sv) * | 1983-06-23 | 1985-10-14 | Ssab Svenskt Stal Ab | Ventilanordning for reglering av ett flode inuti en rorledning |
US4860639A (en) * | 1984-12-11 | 1989-08-29 | Bridgestone Corporation | Flexible tubular wall actuator with end-mounted strain gauge |
US4848168A (en) * | 1987-04-13 | 1989-07-18 | Bridgestone Corporation | Traveling device moving along elongated member |
DE3909370A1 (de) * | 1989-03-22 | 1990-09-27 | Harry Gielnik | Doppeltwirkender teleskop-zylinder mit mechanischem rueckzug |
JP2846344B2 (ja) * | 1989-06-19 | 1999-01-13 | 株式会社ブリヂストン | 弾性伸長体を用いたアクチュエータ |
DE19725591A1 (de) * | 1996-10-22 | 1998-12-24 | Homann Werner Dipl Ing Fh | Stellantrieb zur Umwandlung der Energie eines Fluids in eine mechanische Kraft |
JP2001132708A (ja) * | 1999-11-02 | 2001-05-18 | Smc Corp | ストローク調整可能な流体圧シリンダ |
DE10139861B4 (de) * | 2001-08-14 | 2004-07-01 | Daimlerchrysler Ag | Radaufhängung eines Kraftfahrzeugs |
-
2003
- 2003-08-27 DE DE10339819A patent/DE10339819A1/de not_active Withdrawn
-
2004
- 2004-07-28 EP EP04017809A patent/EP1510700B1/de not_active Expired - Lifetime
- 2004-07-28 DE DE502004001649T patent/DE502004001649D1/de not_active Expired - Lifetime
- 2004-08-25 JP JP2004245236A patent/JP2005069487A/ja not_active Withdrawn
- 2004-08-26 US US10/927,274 patent/US20050047849A1/en not_active Abandoned
- 2004-08-27 BR BR0403593-3A patent/BRPI0403593A/pt not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB697707A (en) * | 1950-12-21 | 1953-09-30 | American Steel Foundries | Improvements in a fluid pressure responsive device |
US5201262A (en) * | 1989-06-20 | 1993-04-13 | Bridgestone Corporation | Actuator using elastic extensible member |
JPH06159325A (ja) * | 1992-11-13 | 1994-06-07 | Ckd Corp | 直進形柔軟アクチュエータ |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 018, no. 491 (M - 1672) 13 September 1994 (1994-09-13) * |
Also Published As
Publication number | Publication date |
---|---|
US20050047849A1 (en) | 2005-03-03 |
DE10339819A1 (de) | 2005-03-31 |
DE502004001649D1 (de) | 2006-11-16 |
BRPI0403593A (pt) | 2005-06-07 |
EP1510700B1 (de) | 2006-10-04 |
JP2005069487A (ja) | 2005-03-17 |
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