EP4310265A1 - Procédé d'installation d'un élément d'évacuation d'eau et élément d'entrée d'évacuation d'eau destiné à être intégré dans un sol praticable - Google Patents

Procédé d'installation d'un élément d'évacuation d'eau et élément d'entrée d'évacuation d'eau destiné à être intégré dans un sol praticable Download PDF

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Publication number
EP4310265A1
EP4310265A1 EP23180563.1A EP23180563A EP4310265A1 EP 4310265 A1 EP4310265 A1 EP 4310265A1 EP 23180563 A EP23180563 A EP 23180563A EP 4310265 A1 EP4310265 A1 EP 4310265A1
Authority
EP
European Patent Office
Prior art keywords
water drain
frame
sealing
base body
screed
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.)
Pending
Application number
EP23180563.1A
Other languages
German (de)
English (en)
Inventor
Ralph JOHANN
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.)
Ardex Group GmbH
Original Assignee
Ardex Group GmbH
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 Ardex Group GmbH filed Critical Ardex Group GmbH
Publication of EP4310265A1 publication Critical patent/EP4310265A1/fr
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/0407—Floor drains for indoor use
    • E03F5/0409—Devices for preventing seepage around the floor drain

Definitions

  • the invention relates to a method for installing a water drain installation element with a water drain base body in a walkable floor, the water drain base body having an inlet opening and a sealing flange extending along a peripheral edge and laterally projecting, and wherein on the sealing flange there is a sealing film which protrudes laterally beyond the sealing flange and has the inlet opening overlapping sealing film recess is fixed, wherein in the method the water drain installation element is arranged on a substrate, is embedded in a screed bed in an embedding step, and then in a sealing film fastening step the sealing film is at least partially in the circumferential direction around the inlet opening on a surface area adjacent to the water drain base body on a top side of the screed bed is determined.
  • the invention also relates to a corresponding water drain installation element for installation in a walkable floor with a water drain base body which has an inlet opening and a laterally projecting sealing flange running along a peripheral edge, with a sealing film on the sealing flange which protrudes laterally beyond the sealing flange the sealing film recess overlapping the inlet opening is fixed.
  • Such water drain installation elements are used, for example, to install a water drain in a walkable floor in order to be able to absorb amounts of water that accumulate on the floor and drain it away through the water drain.
  • Such water drains are provided, for example, in rooms such as swimming pools, in which water can get onto the floor covering during normal use of the room and should be drained away.
  • Such water drains can also be provided in rooms in which water can only reach the floor in exceptional cases and then be drained away quickly, such as in basement rooms, or where rapid and water-intensive cleaning is to be carried out and the cleaning water is then to be drained away , such as in public sanitary facilities.
  • a very common use of such a water drain installation element is a shower channel, which is arranged in a floor covering of a sanitary room and is intended to absorb and drain the shower water used during showering.
  • the water drain base body is regularly first arranged with its inlet opening on a surface in such a way that the inlet opening is flush with a surface of the floor or at a slight distance below the surface after the walkable floor has been completed of the floor is arranged.
  • the one arranged on the ground The water drainage base body is connected to a water-draining pipe system, which is covered by the floor covering of the accessible floor after completion.
  • a screed bed is then usually created on the subsurface or on a substructure built on the subsurface, which has, for example, insulation panels for thermal and impact sound insulation.
  • the walkable floor should have a slope of usually 1 to 2 degrees inclination to the inlet opening of the water drain base body.
  • the screed bed must therefore connect to the water drainage base body at a precisely specified height and have the desired gradient.
  • the screed bed is then often covered with a waterproof sealing layer, which is either laid and glued to the screed bed as a film, or is distributed as a flowable sealant on the surface of the screed material of the screed bed and then hardens to form a waterproof sealing layer.
  • a waterproof sealing layer With such a water-impermeable sealing layer, the moisture that penetrates through the floor covering elements laid on the screed bed, such as tiles and in particular through the joints between the tiles, in the direction of the screed bed and then below the floor covering elements on the Top of the Water-impermeable sealing layer can be drained to the inlet opening.
  • a sealing film which is fixed watertight on the water drainage base body is regularly placed and projects outwards from the inlet opening fixed on the screed bed and sealed towards the screed bed. This sealing film forms a waterproof bridge between the inlet opening of the water drain base body and the top of the screed bed, which is also waterproofed.
  • the screed material which is still flowable, to be distributed over the subsurface using a scraper gauge, thereby producing a surface of the screed material that is as flat as possible.
  • the sealing film regularly completely covers the sealing flange which protrudes laterally from the water drain base body. The sealing flange therefore cannot serve as a support and guide for a stripping gauge when applying the screed material to the subsurface.
  • the applicator gauge must be held and guided freehand, which requires great experience and a considerable amount of time during the application of the screed material.
  • the sealing film must also be kept away from the adjacent surface areas of the screed bed in order to prevent the sealing film from penetrating the screed material in an uncontrolled manner before the screed material has hardened and subsequently no longer creating a waterproof seal of the screed bed to this sealing film is possible.
  • the manual effort required for this while embedding the water drainage base body in the screed bed and in particular while removing the screed material with a free-hand pulling gauge is considerable.
  • Box-like covers of the water drain base body are known from practice, which can be placed on the inlet opening and the laterally projecting sealing flange of the water drain base body and then surround and cover the previously folded sealing film with the adjacent sealing flange.
  • These box-like covers in turn have a laterally projecting pull-off flange, which, after the cover has been properly arranged on the water drainage base body, specifies the desired height of the screed bed and can be used to ensure that the still flowable screed material is supported on the pull-off flange and guided over the pull-off flange Pulling gauge can be distributed.
  • the sealing film is protected from the surrounding cover and is kept away from the adjacent surface areas of the screed bed produced in the embedding step.
  • the cover can be removed.
  • a step-like depression is created between the sealing flange of the water drain base body and the adjacent surface area of the screed bed, in which the pull-off flange of the cover was arranged.
  • This depression can then be filled with a suitable mortar or screed material in order to achieve a smooth and surface-flush connection of the screed bed to the sealing flange of the water drain base body.
  • the sealing film must be applied to the water drain installation element again manually kept away from the adjacent surface areas of the screed bed being processed.
  • This object is achieved according to the invention in that before the embedding step, at least in sections along the peripheral edge of the water drainage base body, a pull-off frame which projects laterally beyond the sealing flange and is not formed in one piece with the sealing flange is fixed to the water drainage base body, and that during the embedding step a surface of the flowable screed material is aligned with a top side of the removal frame is formed.
  • the pull-off frame adjacent to the side of the sealing flange is not covered by the sealing film.
  • the peeling frame can be used during the embedding step to distribute the soft-plastic screed mortar or the still-flowable screed material with the help of a peeling gauge and can support and guide a peeling gauge placed on the peeling frame and guided along the peeling frame.
  • the removal frame Since the removal frame is fixed to the water drainage base body at the height intended for the adjacent surface areas of the screed bed, the removal frame specifies the desired height of the adjacent screed bed without any manual adjustment or special handling of the pulling gauge becomes necessary.
  • the removal frame can remain in the screed bed after the screed material has hardened and does not have to be subsequently removed from the screed bed, so that no step-like depression is created in the hardened screed material, which then has to be filled up again.
  • the removal frame can be detachably attached to the water drain base body.
  • the pull-off frame is partially or completely pre-assembled on the water drain base body and no additional assembly steps are required for the arrangement and fixation of the pull-off frame during the installation of the water drain installation element.
  • a surface of the screed material is covered with a water-impermeable sealing layer before the sealing film is fixed to a surface of the sealing layer in the sealing film fastening step.
  • the sealing layer can be a waterproof film or a coated flow material.
  • a film-like sealing layer can be glued to the surface of the screed material using a suitable adhesive. It is also conceivable that the film-like sealing layer is coated with an adhesive.
  • the sealing layer is created during or after the screed material has hardened by applying and distributing a flowable sealing compound on the surface of the screed material.
  • the sealing compound can be comparatively thin and can be cast on the surface of the screed material to produce the sealing layer.
  • the sealing compound can also be comparatively viscous and can be distributed on the surface of the screed material using suitable tools such as brushes, rollers or squeegees.
  • the sealing film can be spread from the water drainage base body to the adjacent surface areas of the previously sealed screed bed and fixed on the sealed surface of the screed bed.
  • An overlap area of the sealing film of the water drain installation element with the adjacent surface areas of the screed bed is expediently specified to be sufficiently large, so that undesirable penetration of moisture into a gap between the waterproof sealing layer of the screed bed on the one hand and the sealing film of the water drain installation element spread out and fixed thereon on the other hand can be excluded.
  • the sealing film is glued to the top of the screed bed in the sealing film fastening step.
  • the bonding can be carried out with a suitable adhesive material.
  • the waterproof sealing layer covering the screed material is made from a flowable and hardening sealant, and that the sealing film is laid out on the top of the sealant after the sealant has been applied to the top of the screed material and before the sealant has completely hardened is pressed into the still hardening sealing compound in order to be bonded and adhesively connected to the sealing compound.
  • the invention also relates to a water drain installation element for installation in a walkable floor with a water drain base body which has an inlet opening and a laterally projecting sealing flange which runs along a peripheral edge around the inlet opening, with a sealing film on the sealing flange which protrudes laterally beyond the sealing flange and which overlaps the inlet opening Sealing film recess is fixed.
  • a water drain installation element for installation in a walkable floor with a water drain base body which has an inlet opening and a laterally projecting sealing flange which runs along a peripheral edge around the inlet opening, with a sealing film on the sealing flange which protrudes laterally beyond the sealing flange and which overlaps the inlet opening Sealing film recess is fixed.
  • Such water drain installation elements are known from practice.
  • the sealing film protruding laterally beyond the sealing flange is intended to enable a watertight connection of the water drain base body with the inlet opening formed therein on the one hand and the adjacent areas of a
  • the sealing film is connected flatly to the sealing flange along the peripheral edge of the inlet opening.
  • the sealing film is often integrally connected to the sealing flange or welded or glued to the sealing flange over the entire surface.
  • the sealing film is expediently connected to one another using a suitable friction welding process or ultrasonic welding process.
  • the sealing film is regularly fixed over the entire surface of the sealing flange and connected to it.
  • the water drain installation element has, at least in sections along the peripheral edge, a pull-off frame which projects laterally beyond the sealing flange and is not formed in one piece with the sealing flange and has a flat upper side.
  • the removal frame forms an extension of the sealing flange that extends laterally beyond the sealing flange and can serve as a support surface for a removal gauge, with which an adjacent screed material is removed for the production of the walkable floor and with a uniform and a suitable gradient towards the inlet opening of the water drain base body Surface can be formed.
  • the sealing flange While the sealing flange is usually completely separated from the sealing film due to manufacturing reasons is covered and glued or provided with it, the sealing film only lies loosely on the removal frame and can be lifted when the water drainage base body is embedded in a screed bed and kept away from the current processing area of the adjacent screed bed.
  • the pull-off frame is not formed in one piece with the sealing flange and can be subsequently attached to the water drain base body, so that the sealing film can be fixed over the entire surface of the sealing flange using the known welding or adhesive methods, which makes the production of the water drain element easier and cost-effective.
  • a screed material surrounding the water drainage base body can be quickly distributed using a removal gauge guided over the removal frame and a flat surface of the screed material can be produced with the desired slope towards the inlet opening.
  • a pull-off frame with a flat top is understood to mean any design of the pull-off frame as well as three-dimensionally structured top sides of the pull-off frame, which enable the top of the pull-off frame to serve as a support and guide for commercially available pull-off gauges and, for example, a displacement guided over the top the drawing gauge is not hindered and does not lead to an uneven surface of the screed material created with the pulling gauge.
  • removal frames assembled from several sections with thin gaps between individual surface sections are also considered suitable removal frames with a flat surface, for example Pulling frame with a rough or grooved or grid-shaped top, as long as the support and guidance of a pulling gauge over the appropriately designed surface is not hindered.
  • the removal frame can remain in the screed bed and does not have to be subsequently removed from the screed bed together with a cover known from practice, there is no step-like recess around the sealing flange, which would then have to be filled again.
  • the sealing film attached to the sealing flange can be spread laterally over the removal frame and over an adjacent surface area of the screed bed and fixed thereon in a watertight seal.
  • the top of the pull-off frame is aligned with an upper side of the sealing flange.
  • the sealing film attached to the top of the sealing flange can then be spread out laterally over the top of the pull-off frame and over an adjacent surface area of the screed bed and fixed sealingly on the screed bed without the sealing film having step-like recesses or would have to be moved away from the formations.
  • the sealing film, which is spread out and sealingly connected to the screed bed has a flat top that extends from the outer edge above the screed bed to the inlet opening in the Water drain base body runs. In this way, a reliable removal of water or moisture can be ensured, which collects on the side of the inlet opening on the waterproof covered screed bed and can be drained away via the sealing film to the inlet opening.
  • the pull-off frame is fixed in a latching manner below the sealing flange on the water drain base body.
  • the pull-off frame can have suitable locking elements, which can be brought into engagement with cooperating locking elements on an underside of the sealing flange or on a side wall section of the water drain base body below the sealing flange.
  • the latching fixation of the removal frame can either be designed to be either non-destructively removable or no longer non-destructively removable from the water drain base body.
  • the removal frame prefferably clamped to the water drain base body using clamping elements.
  • a positive fixation of the removal frame for example by means of tongues, which are in Correspondingly adapted recesses intervene, possible and advantageous for certain applications.
  • the pull-off frame can be fixed to the water drain base body at different distances relative to the sealing flange.
  • a distance of a surface of the screed bed can be specified relative to an upper edge of the inlet opening in order to enable adaptation to floor covering elements of different thicknesses that are to be laid on the screed bed and then have a surface-flush connection to the inlet opening of the water drain base body.
  • the pull-off frame has a first U-shaped pull-off frame element with two pull-off frame element legs arranged at a distance from one another, which surround the inlet opening on opposite sides.
  • installation situations for the water drain installation element are often provided in which the inlet opening is to be arranged near an edge of the accessible floor and in particular immediately adjacent to a wall that laterally delimits the accessible floor.
  • the first U-shaped pull-off frame element is expediently designed so that it surrounds the inlet opening on three sides and is not arranged on a fourth side of the inlet opening, or does not protrude laterally beyond a side edge of the sealing flange on the fourth side.
  • the water drainage base body With the first U-shaped pull-off frame element it is then possible for the water drainage base body to be included a side wall that is not surrounded by the first U-shaped pull-off frame element is arranged immediately adjacent to an edge region of the accessible floor or to a wall on the subsurface.
  • the distribution of the screed material in the areas leading away from the wall or from the edge around the water drainage base body is made easier, but does not prevent the water drainage base body from approaching the wall or the edge of the accessible floor.
  • the peel-off frame can also optionally have a second strip-shaped peel-off frame element, which, together with the first U-shaped peel-off frame element, completely surrounds the inlet opening.
  • the second strip-shaped pull-off frame element can be detachably secured to the first U-shaped pull-off frame element. It is also conceivable and advantageous for independent use of the second strip-shaped pull-off frame element if the second strip-shaped pull-off frame element can be detachably secured to the water drain base body. Depending on the respective installation situation, it may be expedient for only the second strip-shaped pull-off frame element to be fixed to the water drainage base body and to be used for rapid distribution and the formation of a flat surface of the screed bed.
  • Such a design and use of the water drain installation element can be particularly advantageous if the water drain base body is arranged within the walkable floor in such a way that the water drain base body is arranged on two or three sides close to or immediately adjacent to walls or edges of the walkable floor.
  • the removal frame is arranged pre-assembled on the water drain base body.
  • the water drain installation element designed and pre-assembled in this way can then be arranged on the subsurface and embedded in the screed bed without any further preparation or assembly steps.
  • a first or second pull-off frame element which is initially pre-assembled on the water drain base body, can be detached from the water drain base body and removed if necessary. Since in many applications the inlet opening of the water drain base body should be surrounded on all sides by the screed bed, the pre-assembled removal frame makes this application easier during the installation of the water drain installation element.
  • the water drain installation element 1 has a water drain base body 2 with an inlet opening 3. Along a peripheral edge of the inlet opening 3, which is rectangular in this exemplary embodiment, the water drain base body 2 has a laterally projecting sealing flange 4, which is usually formed in one piece with the water drain base body 2. On an upper side 5 of the sealing flange 4 facing away from the water drainage base body 2, a sealing film 6 is fixed over the entire surface in a watertight manner, for example welded.
  • the sealing film 6 has a sealing film recess 7 that overlaps the inlet opening 3 congruently, which exposes the inlet opening 3 and allows water accumulating above the sealing film 6 to flow through the recess 7 and the inlet opening 3 into an interior 8 of the water drain base body 2 and from can be drained away there via a water-draining pipe system.
  • the water drain installation element 1 usually only has a connecting piece 9 for connecting the water drain base body 2 to the water-draining pipe system.
  • the water drain installation element 1 Laterally adjacent to the sealing flange 4, the water drain installation element 1 has a pull-off frame 10 which projects laterally beyond the sealing flange 4 and is not formed in one piece with the sealing flange 4.
  • the removal frame 10 is manufactured separately and subsequently attached to the water drain base body 2.
  • the removal frame 10 can be made of the same material, usually a plastic material, as the water drain base body 2.
  • the peel frame 10 can also be made of a different material.
  • the pull-off frame 10 can be formed in one piece and completely surround the inlet opening 3 and the sealing flange 4 in the circumferential direction.
  • the peel-off frame 10 is composed of a first U-shaped peel-off frame element 11 and a second strip-shaped peel-off frame element 12.
  • a flat top 13 of the pull-off frame 10 serves as a support surface and guide for a pull-off gauge when embedding the water drain installation element 1 in a screed bed, as will be explained in more detail below.
  • FIG 3 is that in the Figures 1 and 2
  • the water drain installation element 1 shown is shown schematically and without the sealing film 6 for clarity.
  • the peel-off frame 10 is composed of the first U-shaped peel-off frame element 11 and the second strip-shaped peel-off frame element 12.
  • the first U-shaped pull-off frame element 11 has two pull-off frame element legs, which each extend along an associated end face of the inlet opening 3 and surround the inlet opening 3 on opposite end faces.
  • Figure 4 is a differently designed water drain installation element 1 with a one-piece pull-off frame 10, but also shown without the sealing film 6.
  • FIG. 5 to 7 Various examples of subsequent fixing of the pull-off frame 10 to the water drain base body 2 are shown as examples.
  • Laterally projecting fastening tongues 14 are formed on the pull-off frame 10 and are spaced apart from one another in the circumferential direction.
  • Corresponding fastening elements 16 are formed on an underside 15 of the sealing flange 4 or are subsequently attached.
  • the fastening tongues 14 are pin-shaped with a square cross-sectional area and can each be inserted into a sleeve-shaped fastening element 16 until the pull-off frame 10 with its flat top 13 is almost gap-free and flush with the top 5 of the sealing flange 4.
  • the fastening element 16 has two locking tongues 17 on the underside 15 of the sealing flange 4, so that the also pin-shaped fastening tongues 14 of the pull-off frame 10 are clipped into the fastening element 16 from below and are fixed to the sealing flange 4 in a form-fitting manner surrounded by the locking tongues 17.
  • the method according to the invention for installing the water drain installation element 1 in a walkable floor is illustrated.
  • the water drain installation element 1 is arranged on a surface 18, as shown in Figure 8 is shown.
  • height adjustment elements 10 a height of the top 5 of the sealing flange 4 as well as the height of the flush top 13 of the pull-off frame 10 above the substrate 18 can be adjusted and be specified.
  • the connecting piece 9 of the water drain installation element 1 can then be connected to a water-draining pipe system arranged on the substrate 18, so that water flowing into the interior 8 of the water drain base body 2 through the inlet opening 3 can be drained away through the connecting piece 9 and the water-draining pipe system.
  • the water drain installation element 1 is then embedded in a screed bed 20 in an embedding step, as shown in Figure 9 is shown.
  • the screed material 21 is distributed on the subsurface and a top side 22 of the screed material 21 is made flat using a scraper gauge 23.
  • the peeling gauge 23 can be supported and guided along the flat top 13 of the peeling frame 10.
  • the top 13 of the pull-off frame 10 thereby also specifies the desired level of the top 22 of the screed material 21 relative to the water drainage base body 2 and the inlet opening 3. This considerably simplifies the production of a flat screed bed 20 with a flat top 22, which means that production time and production costs can be saved.
  • the sealing film 6 is expediently kept away from the top 22 of the screed material 21.
  • a waterproof sealing layer 24 is applied to the top side 22 of the screed material 21.
  • the sealing layer 24 can, for example, be a laid or glued-on film-like sealing layer 24, or can be produced by casting and distributing a flowable sealing compound, which then hardens and forms the waterproof sealing sealing layer 24, as in Figure 10 is shown.
  • the sealing film 6 is spread outwards on all sides from the inlet opening 3 onto the top 13 of the pull-off frame 10 and onto the adjacent surface areas of the top 22 of the screed bed 20 covered with the sealing layer 24 and also fixed thereon in a watertight seal.
  • the screed bed 20 can be covered with floor covering elements 25.
  • the floor covering elements 25 can, for example, be ceramic tiles, which are embedded in an adhesive mortar bed 26 applied to the screed bed 20, as shown in Figure 11 is shown.
  • the moisture is retained by the sealing layer 24 and can flow via the sealing film 6 and the inlet opening 3 into the interior 8 of the water drain base body 2 to be taken away from there.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Floor Finish (AREA)
EP23180563.1A 2022-07-22 2023-06-21 Procédé d'installation d'un élément d'évacuation d'eau et élément d'entrée d'évacuation d'eau destiné à être intégré dans un sol praticable Pending EP4310265A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022118447.1A DE102022118447A1 (de) 2022-07-22 2022-07-22 Verfahren zum Einbauen eines Wasserablaufeinbauelements sowie Wasserablaufeinbauelement zum Einbau in einen begehbaren Boden

Publications (1)

Publication Number Publication Date
EP4310265A1 true EP4310265A1 (fr) 2024-01-24

Family

ID=86942662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23180563.1A Pending EP4310265A1 (fr) 2022-07-22 2023-06-21 Procédé d'installation d'un élément d'évacuation d'eau et élément d'entrée d'évacuation d'eau destiné à être intégré dans un sol praticable

Country Status (2)

Country Link
EP (1) EP4310265A1 (fr)
DE (1) DE102022118447A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE951920C (de) * 1954-01-06 1956-11-08 Johanna Loeffler Geb Kluge Fussbodenentwaesserungsvorrichtung
DE6808886U (de) * 1968-11-01 1969-10-16 Passavant Werke Ablauf, insbesondere strassen- oder brueckenablauf
DE2612684A1 (de) * 1976-03-25 1977-09-29 Continental Gummi Werke Ag Vorrichtung zur abdichtung der raender von gullys

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1192119B (fr) 1965-04-29
DE102011050825A1 (de) 2011-06-02 2012-12-06 Natursteinwerk Oppach GmbH Entwässerungsrinne und rechteckiger Einlauf aus Metallblech mit einlegbarem Rost

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE951920C (de) * 1954-01-06 1956-11-08 Johanna Loeffler Geb Kluge Fussbodenentwaesserungsvorrichtung
DE6808886U (de) * 1968-11-01 1969-10-16 Passavant Werke Ablauf, insbesondere strassen- oder brueckenablauf
DE2612684A1 (de) * 1976-03-25 1977-09-29 Continental Gummi Werke Ag Vorrichtung zur abdichtung der raender von gullys

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