EP0662567A2 - Actionneur linéaire sans tige - Google Patents

Actionneur linéaire sans tige Download PDF

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Publication number
EP0662567A2
EP0662567A2 EP94120986A EP94120986A EP0662567A2 EP 0662567 A2 EP0662567 A2 EP 0662567A2 EP 94120986 A EP94120986 A EP 94120986A EP 94120986 A EP94120986 A EP 94120986A EP 0662567 A2 EP0662567 A2 EP 0662567A2
Authority
EP
European Patent Office
Prior art keywords
profile element
linear drive
drive according
section
longitudinal slot
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
Application number
EP94120986A
Other languages
German (de)
English (en)
Other versions
EP0662567B1 (fr
EP0662567A3 (fr
Inventor
Reinhard Lipinski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Invest Tech AG
Original Assignee
Invest Tech AG
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6507643&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0662567(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Invest Tech AG filed Critical Invest Tech AG
Publication of EP0662567A2 publication Critical patent/EP0662567A2/fr
Publication of EP0662567A3 publication Critical patent/EP0662567A3/fr
Application granted granted Critical
Publication of EP0662567B1 publication Critical patent/EP0662567B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/082—Characterised by the construction of the motor unit the motor being of the slotted cylinder type

Definitions

  • the invention relates to a rodless linear drive with the features of the preamble of claim 1.
  • Rodless linear drives generally have a guide tube in which a piston is slidably mounted and sealed.
  • a piston In order to discharge the force generated by the action of a pressure medium on the piston from the guide tube, this has a lateral slot which is penetrated by a web connected to the piston.
  • the slot or longitudinal slot extends at least over the entire path to be traveled by the piston and generally over the entire length of the guide tube. Therefore, to form pressure medium chambers, it is necessary to seal the longitudinal slot in the areas in which the piston is not currently standing.
  • a sealing tape is used, which abuts the longitudinal slot from the inside and sits with a section in it.
  • the sealing tape In the area of the piston, the sealing tape is lifted inwards from the longitudinal slot in order to clear the path for the web, which is the Seals around the sealing tape.
  • the sealing tape In order to enable safe operation of such pressure-actuated linear drives, it is necessary for the sealing tape to be held in the longitudinal slot so that it does not sag or fall inwards.
  • a linear drive cylinder is known from DE 34 29 783 A1, in which the sealing strip sealing the longitudinal slot has two ribs or lips which are arranged at a distance from one another and parallel to one another and which pass through the longitudinal slot and which are each provided with a so-called bead at the end.
  • Both the sealing tape and the ribs are made of flexible material.
  • the ribs are springy outwards, i.e. Pretensioned away from each other in the spreading direction and engage behind the longitudinal slot with their beads in order to fix the sealing tape in the longitudinal slot.
  • the material used for the sealing tape determines the spring properties of the lips and thus how securely the sealing tape is held on the guide tube.
  • the ribs and beads protrude from the longitudinal slot, which must be taken into account when installing the linear drive cylinder in machines and systems.
  • a linear drive cylinder is known from the aforementioned publication, in which the longitudinal slot has flanks provided with a longitudinal groove, into which the sealing strip engages with corresponding longitudinal beads.
  • a pressure medium cylinder with a longitudinally slotted guide tube, in which a sealing tape which is in contact with the longitudinal slot on the inside of the guide tube interacts with a cover tape which is in contact with the longitudinal slot from the outside.
  • the sealing tape has two outwardly directed longitudinal webs which run parallel to one another and are slightly curved away from one another and which delimit a space between them.
  • the sealing strip engages in this intermediate space with a rib provided in one piece and pointing radially inwards, a clamping or latching connection being produced due to the inclination of the surfaces in contact with one another.
  • the sealing tape is also required in addition to the sealing tape. Both bands must be lifted off the longitudinal slot on the web and the web must be guided around both bands.
  • the magnetic strip in addition to the sealing tape and the cover tape, the magnetic strip must also be lifted out of the longitudinal slot in order to allow passage for the web connected to the piston.
  • the separate profile element arranged in the longitudinal slot forms a latching device with which the section of the sealing tape engaging in the longitudinal slot can be latched.
  • the latching effect can be set largely independently of the specific design of the sealing tape by suitable design and dimensioning of the profile element.
  • the sealing tape is primarily responsible for sealing the guide tube and can be optimized for this function with regard to the material selection.
  • the separately provided profile element can be designed both in terms of its material selection and in terms of its geometric design so that the sealing tape is optimally held in the longitudinal slot.
  • the wear of the sealing tape can be reduced because it is only subject to a slight deformation when it is inserted into and removed from the longitudinal slot.
  • the profile element is securely fastened in the longitudinal slot if the profile element is held in a form-fitting manner.
  • the profile element can be non-positively secured in the longitudinal slot, ie for example by clamping or cohesively, for example by means of an adhesive.
  • the form-fitting fixation a simple and cheap solution, through which the profile element is held permanently and reliably.
  • the latter can be provided on its flank with at least one groove in which the profile element sits with a section.
  • the profile element is mounted on the guide tube simply by inserting the profile element into the groove.
  • the groove can be rectangular, triangular or otherwise shaped. It is crucial in any case that the profile element is held securely in relation to the radial direction of the guide tube.
  • the sealing tape can have a longitudinal recess on at least one side facing the flank of the longitudinal slot, which extends over the entire length of the sealing tape.
  • This longitudinal recess is assigned a latching section provided on the profile element, which protrudes beyond the flank of the longitudinal slot. If this locking section is held too resiliently in the direction of the groove, it snaps into the longitudinal recess of the sealing tape when it lies in the longitudinal slot. If the sealing tape is pulled inwards out of the longitudinal slot, the latching section of the profile element springs in and releases the sealing tape. This is not subject to any significant deformation in the area of its longitudinal recess.
  • the profile element has an oval cross section and lies in a rectangular groove.
  • the profile element lies with its flat sides against two mutually parallel side walls of the groove and projects with its round latching section into the longitudinal slot.
  • This profile element is deformed in its cross section during the locking process.
  • the semicircular or circular section-shaped locking section becomes more or less flat pressed and the profile element is at least slightly pressed into the groove.
  • Such a deformation is made possible, for example, if the profile element is made of foam rubber.
  • Both the aforementioned profile element which is oval in cross-section, and possible other round profile elements, such as, for example, lying in a triangular or rectangular groove, can also be formed from a thin-walled flexible plastic tube.
  • the profile element can be resiliently mounted in the groove with respect to a direction away from the sealing tape.
  • spring means are provided on the section of the profile element seated in the groove. These spring means can be both a plurality of individual springs spaced apart from one another over the length of the profile element and lying in the groove, such as knobs or the like.
  • the spring means are legs that are supported on the groove and are provided on the profile element. These legs form lips that can spring over the entire length of the profile element.
  • a small permissible spring stroke of the legs is sufficient if the spring movement of the legs is converted into a corresponding movement of the profile element into the groove or out of the groove by inclined surfaces. This can be achieved by the legs resting on contact surfaces provided in the groove, which enclose an angle that can be opened on the flank, the legs being resiliently prestressed in the direction of expansion.
  • This profile element can be made of both plastic and metal.
  • the profile element can have a latching section designed as a resilient tongue or lip, which is arranged between the flank and the sealing strip and which is connected to the section seated in the groove.
  • the spring action required for locking is essentially brought about by a deformation of the tongue.
  • the tongue has contact surfaces which are in contact with corresponding wedge surfaces provided on the sealing strip. The inclination of the contact and wedge surfaces with respect to the flank of the longitudinal slot determines the force required for the sealing tape to snap in and out.
  • the latching force for engaging and disengaging can be set separately.
  • two grooves can also be provided, which run parallel to one another and in which the profile element sits with corresponding sections.
  • the grooves can be both triangular or rectangular, and can also be provided as open-edge grooves on the edges of the flank of the longitudinal slot. In any case, there is the possibility of a secure, form-fitting attachment of the profile element in the longitudinal slot.
  • the profile element completely covers the flanks. In this case, they are protected by the profile element.
  • the web does not damage the flanks when it is pressed against the profile element by lateral pressure.
  • the profile element thus forms a tarnish protection for the flanks.
  • This tarnish protection can also be ensured by the fact that the profile element has at least one portion which is fixedly attached to the flank and is raised in relation to the rest of the flank. Even if the flank is not completely covered, the section provided on the profile element ensures that the web cannot touch the uncovered parts of the flank. This results in reliable tarnish protection.
  • the linear drive module shown in FIG. 1 is a rodless linear drive 1 which has a guide tube 2 in which a piston 4 sealed against its wall 3 is slidably mounted.
  • the guide tube 2 is closed at the ends with lids 5, 6, so that the piston 4 with its end faces 7, 8, the wall 3 and the lids 5 delimits two chambers 9, 10 which can be acted upon by pressure medium, such as compressed air.
  • the guide tube 2 is provided with an elongated slot 12 which extends parallel to its longitudinal axis 11 and passes through the wall 3 and is delimited by two mutually opposite flanks 13, 14 which run parallel and at a distance from one another, in particular from FIG. 2 and the following Fig. Are visible.
  • the longitudinal slot 12 is closed by sealing tape 16 held at the ends of the covers 5, 6, which seals the chambers 9, 10 in the longitudinal slot 12 by means of a sealing lip 17 which bears against the wall 3 of the guide tube 2.
  • the curvature of the sealing lip 17 coincides inwards with the curvature of the wall 3, so that the piston 4 sits on the sealing lip 17 as is sealed on the other wall 3.
  • the sealing tape 16 is pulled inwards by a guide device 18 from the longitudinal slot 12.
  • a forked web 19 is provided in this area, which connects the piston 4 to an external output 20 and through whose fork the sealing tape 16 is passed.
  • FIG. 3 shows two possible embodiments of the linear drive 1 which are different with regard to the design of the longitudinal slot 12 and the sealing tape 16 in a cutout. 3, as well as in the other subsequent figures, in each case in an embodiment is shown in the left half of FIG. and a further embodiment is shown in the right half of FIG. All embodiments have in common that a groove 22 is provided in each flank 13, 14, in which a profile element 24 is held. In all embodiments, the cross section of the groove 22 provided in the flank 13 corresponds to the cross section of the groove 22 provided in the opposite flank 14.
  • the groove 22 provided in the flank 13 is rectangular. It has two mutually parallel side walls 23, between which the profile element 24, which is oval in cross section, is held.
  • the profile element 24 is made of a flexible foam rubber and has a latching section 25 which projects into the longitudinal slot 12 and is essentially circular in cross-section.
  • the sealing tape 16 with an essentially rectangular section 26 in the longitudinal slot 12 has on its side 27 located at the flank 13 a longitudinal recess 28 which corresponds in cross section to the cross section of section 26 and is thus also in the form of a circular section.
  • the snap-in connection between the sealing strip 16 and the guide tube is formed by the profile element 24 located in the longitudinal recess 28.
  • the lying outside of the area occupied by the piston 4 sealing tape 16 is thus held so far in the longitudinal slot 12 that the Sealing lip 17 bears against the wall 3 and the chambers 9, 10 are thus tight.
  • the profile element 24 provides a certain side tarnish protection.
  • the latching section 25 thus also acts as a run-on section 30, which prevents the web from sliding along the flank 13 and damaging it.
  • the protective effect is rather low at least in the case of a continuously flat web and is dependent on the spring effect of the profile element 24.
  • the web 19 can be provided with a projection which is at the same height as the profile element 24 and which is supported on the latching section 25 of the profile element 24.
  • the groove 22 is formed with parallel flanks in the vicinity of its mouth 31, initially widening and then narrowing again following the parallel-flanked section from the mouth 31. Portions of the side walls 23 thus form mutually opposite contact surfaces 32, 33, which enclose an acute angle that opens towards the mouth 31.
  • the profile element 24 is inserted, the latching section 25 is trapezoidal here.
  • the section of this profile element 24 seated in the groove 22 are two legs 36, 37 which enclose one another at an acute angle and which are resilient and bear against the corresponding contact surfaces 32, 33 of the groove 22.
  • the profile element 24 is made of a resilient plastic, so that the legs 36, 37 spring together when the profile element 24 is inserted into the groove 22, and the profile element 24 is pre-tensioned to its rest position shown in FIG. 3.
  • the longitudinal recess 28 provided in the sealing band 16 is also trapezoidal in this embodiment of the profile element in accordance with the trapezoidal latching section 25.
  • the locking action between the guide tube 2 and the sealing tape 16 is also ensured by the action of the profile element 24.
  • the profile element 24 serving as a latching element is not deformed during the latching process as a whole, but essentially only with its legs 36, 37. The extent of the deformation is also less, so that a plastic with less flexibility can be used.
  • this profile element 24 also offers side tarnish protection. This is particularly the case if the web is provided with a lateral longitudinal rib which is supported on the profile element 24. At the latest, when the profile element 24 is fully pressed into the groove 22 so that the legs 36, 37 rest against the bottom thereof, the profile element 24 is a fixed abutment for the web 19.
  • the profile element 24 seated in a trapezoidal groove 22 here has a starting section 30 which is separate from the latching section 25.
  • the latching section 25 is a resilient tongue or lip 41 formed on the profile element 24, which protrudes toward the sealing strip 16 with a slight inclination against the flank 13.
  • a latching connection is thus formed, the sealing band 16 being insertable into the longitudinal slot 12 with little force due to the slight inclination of the lip 41 against the flank 13.
  • the sealing tape 16 is firmly locked in the longitudinal slot 12, so that a greater force is required to lead the sealing tape 16 out of the longitudinal slot 12.
  • the separate start-up section 30 lies against a somewhat recessed area of the flank 13 and projects into the longitudinal slot 12. It is dimensioned so that it bears on the section 26 of the sealing tape 16.
  • the profile element 24 ensures particularly good tarnish protection.
  • the web 19 rests on the run-on section 30 or more precisely on its run-on surface 42, which is arranged essentially parallel to the flank 13. Because the contact surface 42 protrudes with respect to the flank 13 and the profile element 24 as a whole, but in particular in the starting section 30, is made of relatively rigid material, the web 19 resting on the contact surface 42 cannot touch the flank 13. This is effectively protected against damage.
  • the sealing band 16 is straight on its inside facing the piston 4, i.e. plan trained. Therefore, it is slightly deformed by the piston passing under the sealing tape 16, i.e. pushed outwards.
  • the inside of the sealing tape 16 assumes the curvature of the piston 4.
  • the longitudinal recess 28 is dimensioned relatively large.
  • the embodiment of the linear drive 1 shown on the right in FIG. 4 largely corresponds to that shown on the left in FIG. 3.
  • the difference is that the profile element 24 has a substantially round cross section and the groove 22 has a square cross section.
  • the recess 28 is significantly larger, so that the sealing tape 16 only rests with one edge 43 on the profile element 24 in the idle state.
  • the Sealing tape 16 is, as in the embodiment described above, flat on the inside, so that it is pressed slightly outwards by the piston 4 passing through.
  • the longitudinal recess 28 allows a corresponding freedom of movement of the sealing tape 16.
  • a side tarnish protection is also ensured in this exemplary embodiment if, on the web 19, there is an interaction with the profile element 24, i.e. is provided on this adjacent rib.
  • a profile element 24 is used which ensures both a good locking action and good tarnish protection.
  • the section 26 lying in the groove 22 is mounted displaceably in the direction of the surface normal of the flank 13.
  • the latching section 25 is in the form of a circular section and lies in the correspondingly shaped longitudinal recess 28. From the latching section 25, the resilient starting section 30 extends from the groove 22 over the section of the flank 13 adjacent to the groove 22 and covers it. The in the rest position obliquely away from the section 26 starting section 30 is supported on the flank 13 and presses the locking section 25 in the direction of the sealing tape 16, so that the locking section 25 is fixed in the longitudinal recess 28.
  • the sealing tape 16 is engaged and disengaged in a manner similar to that in the exemplary embodiments described above.
  • the start-up section 30 ensures protection of the flank 13 against damage by the web 19 when it is pressed onto the flank 13. This is particularly the case if the profile element is made of a tough and wear-resistant plastic.
  • the groove 22 is provided with undercuts.
  • the groove 22 has two side walls which run parallel to one another at a relatively large distance and into which grooves 22a, 22b, which are again opposite one another and each having a rectangular cross section, are introduced.
  • the grooves 22a, 22b form with their side surfaces a roof-like bottom 44 of the groove 22.
  • the bottom 44 has two sections which are at an obtuse angle to each other, which opens away from the groove 22.
  • the profile element 24, which is a U-shaped strip in the rest state, is supported on these sections of the base 44. This lies with its legs in the grooves 22a, 22b, whereby it is spread.
  • the profile element 24 consists of a flexible material, such as plastic or a resilient sheet metal strip. Due to its spring action, the profile element 24 is pressed somewhat out of the mouth 31 of the groove 22, so that it protrudes with its latching section 25 therefrom.
  • a second groove 45 which is open at the edge and is arranged on the side of the flank 13 opposite the groove 22 is provided.
  • the profile element 24 has two sections 26, 46 lying in the grooves 22, 45, which are elastically connected to one another by the run-on section 30.
  • the run-up section 30 covers the entire flank 13. In the idle state, the section 26 with the run-up section 30 encloses an obtuse angle and the section 46 lying in the edge-open groove 45 with the run-up section 30 forms an acute angle with one another.
  • the run-up section 30 is at the edge-open Groove 45 elastically in the direction of the sealing tape 16, at the same time forming the latching section 25.
  • the side 27 of the sealing tape 16 is inclined against the flank 13 and merges with a step 47 above the run-up section 30 to a greater width.
  • the inclined side 27 and the step 47 together delimit the longitudinal recess 28 in which the run-up section 30 lies.
  • a longitudinally running rib 48 with a semicircular cross section can be provided on the contact surface 42 of the starting section, which rib lies in a corresponding longitudinal groove 49 provided in the side 27 of the sealing tape 16.
  • the embodiment shown on the right in FIG. 6 largely corresponds to that shown on the left, the side 27 of the sealing tape 16, however, running parallel to the flank 13 of the longitudinal slot 12.
  • the sealing tape 16 closes smoothly with the guide tube 2 and the section 46 of the profile element 24 lying in the edge-open groove 45.
  • the locking effect is essentially caused by the interaction of the rib 48 with the longitudinal groove 49.
  • the linear drive 1 shown on the left in FIG. 7 is largely identical in construction to that shown on the left in FIG. 5, the starting section 30 lying flat against the flank 13.
  • the profile element 24, which otherwise defines an angular profile in cross section, is held in a form-fitting manner in the rectangular groove 22 and is essentially stationary with respect to the guide tube 2.
  • the locking effect is due to the here very short locking lip 42 is caused, which lies with a locking lug 50 in the longitudinal groove 49 provided in the sealing strip 16.
  • a spiral spring 51 is formed on the profile element 24 lying in the rectangular groove 22, the first leg 52 of which rests snugly on the somewhat recessed flank 13 and the other leg of which is formed by the lip 41, which is continuously connected to the leg 52 on the outside of the linear drive 1.
  • FIG. 8 Further embodiments of the linear drive 1 that ensure both a start-up protection and a latching function are shown in FIG. 8.
  • the profile element 24 lies in the groove 22, which is triangular in cross section here, in which the likewise triangular section 26 is seated. This can, as shown, be fully formed or be provided with a longitudinal groove which increases the elasticity of section 26.
  • the run-up section 30 and the lip 41 are arranged here on opposite sides of the section 26.
  • the lip 41 can also be elastically connected directly to the run-on section 30.
  • edge-open groove 45 is provided on its side bordering the flank 13 with a longitudinal projection 53, so that, seen from the longitudinal slot 12, there is an undercut in the groove 45.
  • the profile element 24 lies in both Grooves 22, 45 on and aligned with both the outside of the guide tube 2 and the outer side of the sealing tape 16.
  • the lip or tongue 41 extends from the section of the profile element held in place by the grooves 22, 45 in the direction of the piston 4 about in a radial direction. The lip 41 does not abut the flank 13, but is located in the longitudinal slot 12.
  • the end of the lip 41 is provided with the latch 50, which extends over its entire length and lies in the groove-shaped longitudinal recess 28 here, as a result of which the sealing strip 16 is locked in place with the guide tube 2.
  • the tarnish protection is ensured here by the run-up section 30 extending between the grooves 22, 45.
  • the linear drive 1 shown on the right in FIG. 9 largely coincides with the one shown on the left, the undercut in the groove 45 which is open at the edge being dispensed with.
  • the flexible lip 41 is curved so that it is supported with its free end on the flank 13. It is arched into the longitudinal slot 12, this projecting section forming the latching section 25 which is approximately circular in section here.
  • a particularly secure fastening of the profile element 24 is ensured by an undercut in the groove 45 which is open at the edge.
  • the groove 22 is also designed as an open edge groove.
  • the resiliently designed run-on section 30 extends in the direction of the groove 22 which is open at the edge and into which it engages with a short section.
  • the run-up section 30 is resiliently pretensioned away from the flank 13, so that there is for the trapezoidal section of the sealing tape which lies in the longitudinal slot 16 results in a locking effect. Good tarnishing protection is also achieved.
  • the profile element 24 has a sealing groove 60 open to the outside on the section 46 lying in the groove 45.
  • the sealing groove 60 forms a labyrinth seal with a projection provided on a cover band 61 or a slide. An additional improved sealing of the linear drive 1 is thus achieved.
  • the profile element 24 can be used as a type protection element both on pressure-actuated linear drives 1 and on such linear drives that are driven via traction means, screw spindle gear or racks.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Fluid-Damping Devices (AREA)
  • Vehicle Body Suspensions (AREA)
  • Surgical Instruments (AREA)
EP94120986A 1994-01-11 1994-12-31 Actionneur linéaire sans tige Revoked EP0662567B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4400454 1994-01-11
DE4400454A DE4400454C2 (de) 1994-01-11 1994-01-11 Kolbenstangenloser Linearantrieb

Publications (3)

Publication Number Publication Date
EP0662567A2 true EP0662567A2 (fr) 1995-07-12
EP0662567A3 EP0662567A3 (fr) 1997-07-09
EP0662567B1 EP0662567B1 (fr) 2000-09-20

Family

ID=6507643

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94120986A Revoked EP0662567B1 (fr) 1994-01-11 1994-12-31 Actionneur linéaire sans tige

Country Status (4)

Country Link
US (1) US5467686A (fr)
EP (1) EP0662567B1 (fr)
AT (1) ATE196531T1 (fr)
DE (2) DE4400454C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0690237B1 (fr) * 1994-06-28 1999-06-02 FESTO AG & Co Entraínement linéaire

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997040279A1 (fr) * 1996-04-22 1997-10-30 Tol-O-Matic, Inc. Palier a fente
US6257123B1 (en) 1997-10-24 2001-07-10 Phd, Inc. Rodless slides
AT2690U1 (de) * 1998-07-01 1999-02-25 Hygrama Ag Kolbenstangenloser druckmittelzylinder
AT2689U1 (de) * 1998-07-01 1999-02-25 Hygrama Ag Kolbenstangenloser druckmittelzylinder
DE10119358C2 (de) * 2001-04-20 2003-04-17 Konstandin Gmbh Druckmittelzylinder und Montagevorrichtung zu seiner Herstellung
US6857780B2 (en) * 2002-11-15 2005-02-22 Phd, Inc. Rodless slide assembly
DE102020208757A1 (de) 2020-07-14 2022-01-20 Robert Bosch Gesellschaft mit beschränkter Haftung Schlagwerkvorrichtung für eine Handwerkzeugmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104364A1 (fr) * 1982-08-05 1984-04-04 Knorr-Bremse Ag Vérin sans tige de piston avec frein
GB2163499A (en) * 1984-08-13 1986-02-26 Herion Werke Kg Seal for shuttle piston cylinder
EP0260344A2 (fr) * 1986-09-17 1988-03-23 NORGREN MARTONAIR EUROPA GmbH Cylindre pour fluide sous pression
US4991494A (en) * 1988-06-08 1991-02-12 Univer S.P.A. Sealing device for rodless pneumatic cylinders

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2746718A1 (de) * 1977-10-18 1979-04-26 Johann Proels Ing Fa Vorrichtung zum staubdichten verschliessen eines gehaeuses
US4998459A (en) * 1989-09-22 1991-03-12 Blatt John A Rodless fluid actuated motor with improved sealing characteristics

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104364A1 (fr) * 1982-08-05 1984-04-04 Knorr-Bremse Ag Vérin sans tige de piston avec frein
GB2163499A (en) * 1984-08-13 1986-02-26 Herion Werke Kg Seal for shuttle piston cylinder
EP0260344A2 (fr) * 1986-09-17 1988-03-23 NORGREN MARTONAIR EUROPA GmbH Cylindre pour fluide sous pression
US4991494A (en) * 1988-06-08 1991-02-12 Univer S.P.A. Sealing device for rodless pneumatic cylinders

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0690237B1 (fr) * 1994-06-28 1999-06-02 FESTO AG & Co Entraínement linéaire

Also Published As

Publication number Publication date
US5467686A (en) 1995-11-21
DE4400454A1 (de) 1995-07-20
ATE196531T1 (de) 2000-10-15
EP0662567B1 (fr) 2000-09-20
DE4400454C2 (de) 1996-11-07
EP0662567A3 (fr) 1997-07-09
DE59409532D1 (de) 2000-10-26

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