EP4257772A1 - Agencement de fenêtre de toit comprenant une pluralité d'unités de fenêtre et un cadre commun, et procédé d'installation d'un tel agencement de fenêtre de toit - Google Patents

Agencement de fenêtre de toit comprenant une pluralité d'unités de fenêtre et un cadre commun, et procédé d'installation d'un tel agencement de fenêtre de toit Download PDF

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Publication number
EP4257772A1
EP4257772A1 EP23165349.4A EP23165349A EP4257772A1 EP 4257772 A1 EP4257772 A1 EP 4257772A1 EP 23165349 A EP23165349 A EP 23165349A EP 4257772 A1 EP4257772 A1 EP 4257772A1
Authority
EP
European Patent Office
Prior art keywords
frame
window
pane
roof
window unit
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
EP23165349.4A
Other languages
German (de)
English (en)
Inventor
Jesper Händel NOER
Simon Gulløv Møllenberg
David Damm MØNSTED
Tobias Clement Justesen
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.)
VKR Holding AS
Original Assignee
VKR Holding AS
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 VKR Holding AS filed Critical VKR Holding AS
Publication of EP4257772A1 publication Critical patent/EP4257772A1/fr
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/03—Sky-lights; Domes; Ventilating sky-lights
    • E04D13/035—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/03—Sky-lights; Domes; Ventilating sky-lights
    • E04D13/035—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts
    • E04D13/0351—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts the parts pivoting about a fixed axis
    • E04D13/0354—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts the parts pivoting about a fixed axis the parts being flat
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B7/00—Roofs; Roof construction with regard to insulation
    • E04B7/18—Special structures in or on roofs, e.g. dormer windows
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/03—Sky-lights; Domes; Ventilating sky-lights
    • E04D13/0305—Supports or connecting means for sky-lights of flat or domed shape
    • E04D13/031—Supports or connecting means for sky-lights of flat or domed shape characterised by a frame for connection to an inclined roof

Definitions

  • the present invention relates to a roof window arrangement comprising a plurality of window units in a side-by-side configuration in a mounted condition of the roof window arrangement, and a covering assembly including a set of coverings, each window unit comprising at least one pane-carrying frame and a pane, in which at least one window unit of the roof window arrangement comprises a pane-carrying frame in the form of an openable sash which opens about a hinge axis defined by a set of hinges, and in which a common frame is provided to act as a single, stationary frame of all of the plurality of window units in side-by-side configuration, said common frame being configured to be built into a roof surface and comprising a top member, two side members and a bottom member, and said plurality of window units comprising a first window unit with a non-openable pane-carrying frame with a top member, two side members, and a bottom member, and at least one neighbouring secondary window unit with a pane-carrying frame in the
  • Roof windows to be installed in inclined roof surfaces come in a variety of types, and are either installed as stand-alone window units, in which all sides of the roof window borders on the roofing, or in configurations in which several window units are built together to combine into larger arrays providing a larger light influx into a room of a building, and in which only outer sides of the outermost window units border on the surrounding roofing.
  • Typical configurations of twin or quadruple roof window arrangements installed side-by-side and/or above each other, respectively, are shown and described in Applicant's published international application WO 2004/055291 A1 and European patent No. EP 1 581 706 B1 .
  • the window units are typically standard roof windows in which the right side frame member of the left-hand window unit is located adjacent to the left side frame member of the right-hand window unit, and/or the bottom frame member of the upper window unit is located adjacent to the top frame member of the lower window unit.
  • a roof structure comprising rafters and battens
  • at least one rafter and a number of battens will typically need to be removed to provide a sufficiently large aperture in the roof surface and roof structure, while specially designed gap trimmers are normally mounted between the window units and fastened to the roof structure in order to ensure sufficient strength and support for the roof window arrangement.
  • the standard roof windows constituting the window units of the prior art roof window arrangements are installed with a relatively small distance between adjacent side frame members, typically about 18 mm, which leaves sufficient space for trimmers etc.
  • a covering assembly comprising a combination of flashing, cover and cladding elements which provide a weather-tight transition to the surrounding roofing and ensure tightness around each window unit and between adjacent window units.
  • the prior art covering assemblies function well, they are dependent on a relatively large number of tailor-made components that must be manufactured, stored, transported, and assembled at the building site.
  • Applicant's published European patent application EP 3 828 359 A1 shows and describes a roof window arrangement of the kind mentioned in the introduction. While providing a great degree of standardisation and a desired "slim look" due to the reduced distance between neighbouring window units, installation of the roof window arrangement has proven challenging.
  • a roof window arrangement of the kind mentioned in the introduction which is furthermore characterised in that the common frame further comprises at least one mullion extending between the top member and the bottom member and being substantially parallel to the two side members of the common frame, that in the mounted condition of the roof window arrangement, each side member of the pane-carrying frame of the first window unit is configured to be brought into abutment with a respective one of: a mullion and a side member of the common frame, and that at least the pane-carrying frame of the first window unit is configured to be releasably connected to the mullions, or to the mullion and the side member of the common frame, so as to allow the first window unit to be installed independently of the installation of the common frame.
  • pane-carrying frame of the fixed, i.e. non-openable, window unit may be set aside while the common frame is installed in a first installation step.
  • the secondary window unit or units may be dismantled from the common frame in any event, and hence, the installation of the common frame takes place without the added weight.
  • the mullion or mullions provide(s) additional stability to the common frame such that the rectangularity is maintained more easily.
  • a method of installing a roof window arrangement is provided.
  • a first embodiment of a roof window arrangement 1 comprising a plurality of window units 21, 22, 23 configured side-by-side, and as seen from the interior of a room of a building with a roof surface (not shown), in which the roof window arrangement 1 is installed in a mounted condition of the roof window arrangement 1.
  • three window units 21, 22, 23 are present, but other configurations involving two or more than four window units are conceivable as will be described in connection with the second embodiment below.
  • Each window unit 21, 22, 23 comprises a pane-carrying frame 211, 221, 231 and a pane 214, 224, 234.
  • a common frame 10 acts as a single, stationary frame of all of the plurality of window units 21, 22, 23 in the side-by-side configuration.
  • the common frame 10 is configured to be built into the roof surface and connected to the underlying roof structure by means of a set of fittings represented by mounting bracket 3.
  • a covering assembly generally designated 5 is shown as well.
  • the covering assembly 5 provides covering for each window unit as will be described in further detail below.
  • Fig. 2 shows the common frame 10, comprising a frame top member 11 of the common frame 10, spanning all three window units 21, 22, 23 in the mounted condition, two frame side members 12 and 13, and a frame bottom member 14.
  • the at least one mullion 15, 16, 17 may be fastened to the common frame 10 by fastening means such as screws.
  • the common frame 10 and the mullions 15,16, 17 are integrally formed, as shown in Fig. 2b and 2c .
  • the common frame and mullions are preferably made from a suitable polymer, such as polyurethan.
  • the common frame may be manufactured by cast moulding.
  • the engagement between the mullion or mullions and the common frame could be provided by for instance form-locking engagement such that the use of separate fastening means is avoided.
  • the dimensions of the window units forming part of the roof window arrangement are typically chosen in accordance with specific installation conditions, including the area of the room of the building, the available roof surface etc.
  • the overall outer measures wf, hf of the common frame 10 generally present a substantially reduced width wf compared to the total width of three standard roof windows having the same size panes.
  • the height hf generally corresponds to that of a standard roof window.
  • the common frame 10 further comprises two mullions 15, 16 extending between the top member 11 and the bottom member 14 and being substantially parallel to the two side members 12, 13 of the common frame 10.
  • the three window units 21, 22, 23 have the following configuration: Referring to Fig. 1 , the first window unit 21 has a pane-carrying frame 211 with a top member 2111, two side members 2112 and 2113, and a bottom member 2114. As will be described in further detail below, the pane-carrying frame 211 constitutes a fixed, i.e. not openable structure, and is configured to be mounted independently of the remaining components of the roof window arrangement 1. In the following, reference will be made to the first window unit 21 as "fixed”.
  • first window unit 21 is configured to be releasably connected to other parts of the roof window arrangement 1.
  • the parts of the first window unit 21 that are to be connected to the common frame 10 independently include at least the pane-carrying frame 211.
  • the pane 214 is by some distance the heaviest element of the first window unit 21.
  • the second window unit 22 has a pane-carrying frame in the form of an openable sash 221 with a top member 2211, two side members 2212, 2213, and a bottom member 2214, and the third window unit 23 has a pane-carrying frame in the form of an openable sash 231.
  • the general configuration of the third window unit 23 substantially corresponds to the openable sash 221, and elements of the third window unit 23 will only be described where suitable.
  • the second window unit 22 is positioned between the first window unit 21 and the third window unit 23.
  • the openable second and third window units 22, 23 are configured to be top-hung during normal use, representing a first operational condition, in which each openable sash 221, 231 is able to rotate about a primary hinge axis ⁇ 1 (shown in Fig. 3 ), but which is able to assume a second operational condition in which the openable sash 221, 231 pivots for cleaning purposes, about a secondary hinge axis ⁇ 2.
  • a first operational condition in which each openable sash 221, 231 is able to rotate about a primary hinge axis ⁇ 1 (shown in Fig. 3 ), but which is able to assume a second operational condition in which the openable sash 221, 231 pivots for cleaning purposes, about a secondary hinge axis ⁇ 2.
  • Opening and closing of the openable sash 22, 23 during normal use is carried out by means of a handle 227, 237 connected to the respective bottom member 2214, 2314.
  • Activating the second operational condition is carried out by a ventilation flap 228, 238 at the respective top member 2211, 2311 (shown in Fig. 17 ).
  • reinforcement members 111 at the frame top member 11 are also visible in Fig. 2 .
  • Such a reinforcement member is known as such from Applicant's EP 3 564 460 B1 .
  • FIGs 4 to 6 views corresponding to Figs 1 to 3 are shown, of a second embodiment, in which two window units 21 and 22 are present in common frame 10.
  • Reference numerals having the same or analogous function are denoted by the same reference numerals in the first and second embodiments, and only differences will be discussed in detail.
  • the common frame 10 here comprises a single mullion 17.
  • the first window unit 21 is fixed and the second window unit 22 openable.
  • the openable sash 221 of the second window unit 22 opens about a hinge axis ⁇ (shown in Fig. 10 ) defined by a set of hinges 212, 213, 232, 233.
  • the hinges may be of any suitable kind, here shown as pivot hinges as for instance disclosed in Applicant's EP 1 038 083 B1 , EP 1 781 883 B1 , EP 2 770 146 A1 and EP 2 770 149A1 , or as a so-called pantograph hinge as described in Applicant's -pending international application WO 2017/076416 A1 .
  • the set of hinges of each of the first window unit 21 and the third window unit 23 comprises two sash hinge parts 212, 213, 232, 233 connected to the respective openable sash 211, 231.
  • the first window unit 21 is shown, where each side member 2112, 2113 of the pane-carrying frame 211 of the first window unit 21 is brought into abutment with the mullion 17, and the side member 12 of the common frame.
  • the pane-carrying frame 211 of the first window unit 21 is releasably connected to the mullion 17 and the side member 12 of the common frame 10, so as to allow the first window unit 21 to be installed independently of the installation of the common frame 10.
  • the pane-carrying frame 211 of the first window unit 21 may alternatively and/or additionally be releasably connected to the top member 11 of the common frame 10 and/or to the bottom member 14 of the common frame 10.
  • the pane-carrying frame 211 of the first window unit 21 is releasably connected to the top member 11 of the common frame 10, as shown in Fig. 15b .
  • the inner sides of the side member 12 and the mullion 17 facing the pane-carrying frame 211 of the first window unit 21 are configured to allow the pane-carrying frame 211 to be installed from an interior side of the roof window arrangement 1, when the common frame 10 is in its mounted condition.
  • the side member 2113 of the pane-carrying frame 211 of the first window unit 21 is fixed to mullion 17 by releasable fastening means 4, comprising a set of screws 41 and cover plugs 42.
  • the pane-carrying frame 211 of the first window unit 21 is detachable from the common frame 10 from the interior side of the roof window arrangement 1 in the absence of the fastening means 4.
  • the pane-carrying frame 211 may be fixed to the top member 11 of the common frame 10 and/or the bottom member 14 of the common frame 10, by releasable fastening means 4 comprising a set of screws 41 and cover plugs 42.
  • the covering assembly 5 of the roof window arrangement 1 in the first embodiment shown in Fig. 3 will now be described in some detail. Reference is also briefly made to Figs 24 and 25 . The description will be made in conjunction with the description of the covering assembly 5 of the second embodiment, shown in Fig. 6 .
  • the set of coverings of the covering assembly 5 associated with the first window unit 21 are fastened to components of the common frame 10 and to the neighbouring secondary window unit 22, 23.
  • the neighbouring secondary window units 22, 23 are top-hung about a primary hinge axis ⁇ 1 in a first operational condition.
  • the secondary window units comprise a handle 227, 237 (shown in Fig. 1 ) comprising an espagnolette mechanism (shown in Fig. 2 ) cooperating with one striking plate 142a, 142b, 143a, 143b.
  • the secondary units 22, 23 further comprise a ventilation flap 228, 238 to provide ventilation and to allow activation of a second operational condition in which the sash 221, 231 of the secondary window unit 22, 23 is pivotable around a secondary hinge axis ⁇ 2.
  • the covering assembly 5 comprises a top casing 5220, 5230, two side sash coverings 5221a, 5222a, 5231a, 5232a, two side frame coverings 5221b, 5222b, 5231b, 5232b and a bottom sash covering 5223, 5233 for each secondary window unit 22, 23.
  • the covering assembly further comprises a top casing 511 and a bottom covering 514 for the first window unit 21.
  • the top casing 511 is connected to the frame top member 11 of the common frame 10.
  • the bottom covering 514 is connected to the frame bottom member 14 of the common frame 10.
  • Each of the neighbouring secondary window units 22 is pivot-hung about a hinge axis ⁇ by means of a hinge assembly 6 (shown in Fig. 8 ).
  • the covering assembly 5 further comprises a common top casing 510 connected to the frame top member 11 of the common frame 10, two lower side sash coverings 5221, 5222, an upper side frame covering 513 and a mullion side frame covering 517.
  • the covering assembly 5 further comprises a bottom sash covering 5223 for each secondary window unit 22, two side coverings 512a, 512b and a bottom covering 514 for the first window unit 21.
  • the side coverings 512a, 512b are connected to a frame side member 12 (not shown) of the common frame 10.
  • the bottom covering 514 is connected to the frame bottom member 14 (not shown) of the common frame 10.
  • the frame side member 12 of the common frame 10 comprises a frame insert element 18.
  • the side covering 512a is connected to the frame insert element 18.
  • Each pane 214, 224 is associated to a set of sash profiles 541, 542 functioning as glazing beads at border portions of the pane 214, 224, 234.
  • the glazing bead 541 of the pane-carrying frame 211 of the first window unit 21 cooperates with an adapter profile 550 connected to an adjacent mullion 17.
  • the adapter profile 550 cooperates in turn with a side sash covering 5222, 5222a of the neighbouring secondary window unit 22.
  • a lifting device 7 better shown in Figs 18 and 20 is accommodated by the mullion 15 or a side frame member of the common frame 10.
  • the adapter profile 550 is connected to the mullion 15 by means of a support element 19 better shown in Figs 22 and 23 .
  • the support element 19 comprises a carrier part 191 and a bush part 192.
  • the carrier part 191 comprises a base portion 191a, an upstanding portion 191b, a depending portion 191c and a top portion 191d with an opening.
  • the bush part 192 comprises a wall portion 192a, side portions 192b, front portions 192c, protrusions 192d and a snap hook 192e such that the bush part 192 is held to the carrier part 191.
  • a further aspect is achieved with a roof window arrangement of the kind mentioned in the introduction which is furthermore characterised in that the common frame 10 further comprises at least one mullion 15, 16; 17 extending between the top member 11 and the bottom member 14 and being substantially parallel to the two side members 12, 13 of the common frame 10,
  • inner sides of the top member 11 and/or the bottom member 14 facing the pane-carrying frame 211 of the first window unit 21 may be configured to allow said pane-carrying frame 211 to be installed from an interior side of the roof window arrangement 1, the common frame 10 being in its mounted condition.
  • the top member 2111 and/or the bottom member 2114 of the first window 21 may be fixed to the top member 11 and/ or bottom member 14 of the common frame, respectively, by releasable fastening means 4, preferably comprising a set of screws 41 and cover plugs 42.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Door And Window Frames Mounted To Openings (AREA)
  • Window Of Vehicle (AREA)
EP23165349.4A 2022-03-31 2023-03-30 Agencement de fenêtre de toit comprenant une pluralité d'unités de fenêtre et un cadre commun, et procédé d'installation d'un tel agencement de fenêtre de toit Pending EP4257772A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DKPA202270169A DK202270169A1 (en) 2022-03-31 2022-03-31 A roof window arrangement comprising a plurality of window units and a common frame, and method of installing such a roof window arrangement

Publications (1)

Publication Number Publication Date
EP4257772A1 true EP4257772A1 (fr) 2023-10-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP23165349.4A Pending EP4257772A1 (fr) 2022-03-31 2023-03-30 Agencement de fenêtre de toit comprenant une pluralité d'unités de fenêtre et un cadre commun, et procédé d'installation d'un tel agencement de fenêtre de toit

Country Status (3)

Country Link
EP (1) EP4257772A1 (fr)
CN (1) CN220550771U (fr)
DK (1) DK202270169A1 (fr)

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0733146B1 (fr) 1993-12-10 1997-06-11 V. Kann Rasmussen Industri A/S Fenetre pour installation en particulier dans le versant d'un toit incline
JPH11324247A (ja) * 1998-05-08 1999-11-26 Tostem Corp 天 窓
EP1038083B1 (fr) 1997-11-11 2002-03-27 VKR Holding A/S Charniere pour fenetre pivotante
WO2004055291A1 (fr) 2002-12-16 2004-07-01 Vkr Holding A/S Recouvrement de solin pour tabatieres
EP1781883B1 (fr) 2004-07-02 2010-08-11 VKR Holding A/S Ferrures d'articulation comprenant un element intermediaire, fenetre comportant de telles ferrures d'articulation et utilisation d'une telle ferrure d'articulation
EP1581706B1 (fr) 2002-12-16 2014-08-20 VKR Holding A/S Element clignotant lateral, ensemble des elements clignotants laterals et toiture.
EP2770149A1 (fr) 2013-02-22 2014-08-27 VKR Holding A/S Fenêtre de toit avec dispositif de levage et connexion de charnière
EP2770146A1 (fr) 2013-02-22 2014-08-27 VKR Holding A/S Ferrure d'articulation de pivotement amélioré et fenêtre de toit comprenant une telle ferrure
WO2017076416A1 (fr) 2015-11-06 2017-05-11 Vkr Holding A/S Charnière pour lucarne et lucarne comprenant un ensemble de charnières
DE202018100516U1 (de) 2017-05-24 2018-07-12 Vkr Holding A/S Dachgaubenanordnung
WO2019101281A1 (fr) 2017-11-24 2019-05-31 Vkr Holding A/S Fenêtre de toit avec un cadre principal et au moins un cadre secondaire, procédé d'installation d'une telle fenêtre de toit et procédé de démontage d'un cadre secondaire de la fenêtre de toit
EP3406818B1 (fr) 2017-05-24 2019-06-12 VKR Holding A/S Ensemble de lucarne
EP3564460B1 (fr) 2018-04-30 2021-05-26 VKR Holding A/S Fenêtre de toit avec renforcement dans l'élément châssis supérieur
EP3828359A1 (fr) 2019-11-29 2021-06-02 VKR Holding A/S Agencement de fenêtre de toit comprenant une pluralité de structures de châssis et un cadre commun et comprenant un ensemble de recouvrement et procédé de fabrication d'un tel agencement de fenêtre de toit

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0733146B1 (fr) 1993-12-10 1997-06-11 V. Kann Rasmussen Industri A/S Fenetre pour installation en particulier dans le versant d'un toit incline
EP1038083B1 (fr) 1997-11-11 2002-03-27 VKR Holding A/S Charniere pour fenetre pivotante
JPH11324247A (ja) * 1998-05-08 1999-11-26 Tostem Corp 天 窓
WO2004055291A1 (fr) 2002-12-16 2004-07-01 Vkr Holding A/S Recouvrement de solin pour tabatieres
EP1581706B1 (fr) 2002-12-16 2014-08-20 VKR Holding A/S Element clignotant lateral, ensemble des elements clignotants laterals et toiture.
EP1781883B1 (fr) 2004-07-02 2010-08-11 VKR Holding A/S Ferrures d'articulation comprenant un element intermediaire, fenetre comportant de telles ferrures d'articulation et utilisation d'une telle ferrure d'articulation
EP2770149A1 (fr) 2013-02-22 2014-08-27 VKR Holding A/S Fenêtre de toit avec dispositif de levage et connexion de charnière
EP2770146A1 (fr) 2013-02-22 2014-08-27 VKR Holding A/S Ferrure d'articulation de pivotement amélioré et fenêtre de toit comprenant une telle ferrure
WO2017076416A1 (fr) 2015-11-06 2017-05-11 Vkr Holding A/S Charnière pour lucarne et lucarne comprenant un ensemble de charnières
DE202018100516U1 (de) 2017-05-24 2018-07-12 Vkr Holding A/S Dachgaubenanordnung
EP3406818B1 (fr) 2017-05-24 2019-06-12 VKR Holding A/S Ensemble de lucarne
WO2019101281A1 (fr) 2017-11-24 2019-05-31 Vkr Holding A/S Fenêtre de toit avec un cadre principal et au moins un cadre secondaire, procédé d'installation d'une telle fenêtre de toit et procédé de démontage d'un cadre secondaire de la fenêtre de toit
EP3564460B1 (fr) 2018-04-30 2021-05-26 VKR Holding A/S Fenêtre de toit avec renforcement dans l'élément châssis supérieur
EP3828359A1 (fr) 2019-11-29 2021-06-02 VKR Holding A/S Agencement de fenêtre de toit comprenant une pluralité de structures de châssis et un cadre commun et comprenant un ensemble de recouvrement et procédé de fabrication d'un tel agencement de fenêtre de toit

Also Published As

Publication number Publication date
CN220550771U (zh) 2024-03-01
DK202270169A1 (en) 2023-12-12

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