EP3375968A1 - Fenêtre de visualisation pour installation rlt et boîtiers de climatisation - Google Patents

Fenêtre de visualisation pour installation rlt et boîtiers de climatisation Download PDF

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Publication number
EP3375968A1
EP3375968A1 EP18161047.8A EP18161047A EP3375968A1 EP 3375968 A1 EP3375968 A1 EP 3375968A1 EP 18161047 A EP18161047 A EP 18161047A EP 3375968 A1 EP3375968 A1 EP 3375968A1
Authority
EP
European Patent Office
Prior art keywords
viewing
fastening means
viewing window
window according
spiral
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
EP18161047.8A
Other languages
German (de)
English (en)
Other versions
EP3375968B1 (fr
Inventor
Thorsten Kuhnke
Michael Backhaus
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.)
EMKA Beschlagteile GmbH and Co KG
Original Assignee
EMKA Beschlagteile GmbH and Co KG
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 EMKA Beschlagteile GmbH and Co KG filed Critical EMKA Beschlagteile GmbH and Co KG
Priority to PL18161047T priority Critical patent/PL3375968T3/pl
Publication of EP3375968A1 publication Critical patent/EP3375968A1/fr
Application granted granted Critical
Publication of EP3375968B1 publication Critical patent/EP3375968B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/54—Fixing of glass panes or like plates
    • E06B3/58—Fixing of glass panes or like plates by means of borders, cleats, or the like
    • E06B3/5892—Fixing of window panes in openings in door leaves
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B7/00—Special arrangements or measures in connection with doors or windows
    • E06B7/28—Other arrangements on doors or windows, e.g. door-plates, windows adapted to carry plants, hooks for window cleaners
    • E06B7/30—Peep-holes; Devices for speaking through; Doors having windows
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/04—Wing frames not characterised by the manner of movement
    • E06B3/26—Compound frames, i.e. one frame within or behind another
    • E06B3/2605—Compound frames, i.e. one frame within or behind another with frames permanently mounted behind or within each other, each provided with a pane or screen

Definitions

  • the present invention relates to a viewing window for insertion into a viewing port, in particular a viewing port of a RLT system and / or an environmental chamber, with two insertable from opposite directions in the viewing port and fastened via fastening means in the viewing port disc carriers.
  • RLT systems space, air, technical systems
  • climate chambers are equipped with a wide variety of machines, systems, plant components, units, etc. for various applications.
  • Such RLT systems or climate chambers usually have a closed system housing in which different operating or climatic conditions that sometimes differ significantly from the ambient conditions outside the plant housing. For example, conditions with both positive and negative overpressure, various temperature and / or humidity conditions prevail, etc. inside the plant housing, which is why the walls of the plant housing such RLT systems and climatic chambers are usually formed pressure-tight and thermally insulated.
  • viewing openings with viewing windows inserted therein are provided at certain points of the installation housing, which in practice are often designed in the manner of portholes.
  • These viewing windows usually have two discs, of which a first disc on the inside and a second disc is arranged on the outside of the viewing aperture, resulting in a kind of double glazing with good thermal insulation properties.
  • the discs are usually arranged on disc carriers, which are inserted from opposite directions in the viewing port and mounted there.
  • the sequences when mounting the viewing window are therefore such that first a disc carrier from the inside and a disc carrier is inserted from the outside into the viewing port. Then are usually distributed over the circumference of the two disk carrier arranged bolts through corresponding openings inserted through and clamped the two disc carrier by pressing the bolts against each other. Due to the bracing, seals arranged on the disk carriers are compressed, so that the operating conditions prevailing on the climate side in the region of the viewing window are not impaired.
  • attachment means are such arranged on the wheel carriers and designed such that they are operable by a relative movement of the disc carrier.
  • the two disc carrier can be mounted in a simple way to assemble in the viewing port.
  • the two disc carrier can be inserted into the viewing port and then attached by a relative movement become.
  • Additional fasteners, such as bolts, are not required for mounting, which is why not only a much simpler installation, but also results in a smaller number of required sealing points and thus a reduced risk of leakage.
  • the disk carrier have a window frame receiving window frame and a mounting portion on which the fastening means are arranged.
  • the window frame receiving the window frame and the attachment portion can angled to each other and in particular at right angles to each other.
  • the window frame in the manner of a flange-shaped collar and the attachment portion may be formed in the manner of a tubular nozzle. Due to the arrangement of the fastening means on the attachment portion of the disk carrier, the disk carrier has a double function in that it not only serves as a carrier for the disk, but also as a fastening means for securing the disk carrier in the viewing opening.
  • the disk carrier can be produced in a production-wise advantageous manner in only one piece, for example in a plastic injection molding process.
  • the entire disk carrier can be made of a transparent material and also the lens can be integrally formed on the disk carrier.
  • a multi-piece design of the window frame and the actuating portion is conceivable, in particular a two-piece design in which the window frame is made of a transparent material and the attachment portion of an opaque material.
  • the non-transparent attachment portion may protrude into the viewing opening and the inner circumferential surface in this way close to views from the outside. This offers the advantage that when inspecting an aggregate, for example within an air conditioning system, the inspector can not look at the filling provided inside the wall of the air conditioning system, for example a glass fiber material or a similar insulating material.
  • a further embodiment provides that the fastening sections are designed such that they form a collar covering the inner surface of the viewing opening when inserted into the viewing opening.
  • the inner regions of the wall opening of the viewing opening surrounding the viewing opening are covered. It is therefore not to be feared that material from this area, such as an insulating material or similar materials, get into the viewing opening, where they could affect the transparency.
  • the window frames are designed such that they can be tensioned by pressing the fastening means against an end edge of the viewing opening.
  • the resulting clamping force can also serve to compress a surrounding the front edge of the viewing port seal.
  • fastening means it has proved to be advantageous if these are designed in the manner of screw, bayonet and / or latching connection means, screw fasteners having proven to be particularly simple and easy to install.
  • the fastening means are actuated by a relative rotation of the disk carrier.
  • the disk carrier can first in the Inserted viewing port and then rotated against each other.
  • the disk carriers can be moved toward one another in the axial direction and be pressed against the front-side edges of the inspection opening with their window frame under compression of a sealing element provided therein.
  • the fastening means of the disk carrier are at least partially formed spirally.
  • the attachment means of a disc carrier may be formed in the manner of a threaded spindle.
  • the disk carrier can be connected in the manner of a screw with the other disk carrier.
  • a further advantageous embodiment provides in this context that the fastening means of several, in particular three, separate spiral turn sections are formed.
  • the spiral spiral sections can be adapted to the Wandstäke various plant housing. Depending on the thickness of the wall or on the wall thickness in the region of the viewing opening, one of these spiral turn sections can be used for fastening.
  • the spiral spiral sections are therefore designed as a wall thickness adjustment. It need not necessarily be provided three separate spiral spiral sections. Also conceivable are solutions in which four, five, six or more spiral turn sections are provided. Depending on the number of spiral spiral sections, the viewing window can be used for a corresponding number of different wall thicknesses in the region of the viewing opening.
  • the spiral spiral sections are arranged for insertion of the viewing window in different viewing apertures in the Einsetzraumen against each other.
  • the different distances of the spiral spiral sections in use different system enclosures with different wall thicknesses.
  • attachment means of the other disc carrier it is advantageous if these attachment means are formed on the helical attachment means of the other disc carrier attacking.
  • These fastening means may be formed in the manner of a spiral or a spiral section.
  • the first disc carrier may be formed in the attachment portion in the manner of a bolt and the second in the disc carrier in the region of its attachment portion in the manner of a mother. The two disc carrier can then be screwed together in the usual way.
  • fastening means are formed spirally at least in sections.
  • the spiral shapes of the fastening means of the two disk carriers can be formed corresponding to each other.
  • fastening means are designed in the manner of tabs which engage the helical fastening means of the other disk carrier.
  • the tabs can be approximated according to the wall thickness in the field of view opening to a corresponding spiral coil and lock there by only a short, mostly significantly less than 360 ° amount of rotational movement.
  • a plurality of fastening means distributed over the circumference of the disk carrier are provided.
  • two attachment means may be provided on opposite sides of the attachment portion.
  • a total of four fastening means distributed uniformly over the circumference can be provided.
  • a further embodiment provides that the spiral spiral sections have insertion openings for insertion of the fastening means.
  • the fastening means can first be inserted as far as the stop in the insertion openings and then brought into engagement with the spiral spiral provided there. It is not necessary to first pass through a multiple turns coil spiral, as is the case with a conventional screw. Rather, the fastening means along the insertion openings in the manner of a bypass can be transferred directly to a suitable spiral spiral or a suitable spiral turn section. This also simplifies the assembly.
  • insertion openings have an insertion bevel at the insertion end, which simplifies the insertion of the fastening means, in particular in the case of unfavorable visibility.
  • Another embodiment provides a reverse rotation to secure the disk carrier in its fastened position within the view opening.
  • About the reverse rotation can be turned back and thus accidental loosening and deterioration of the climate conditions in a plant housing, for example, a RLT system in the field of viewing window can be avoided, as this can occur, for example, in industrial production by vibration of machines and similar effects.
  • the reverse rotation lock can, for example, of a screw securing the window frame of the disk carrier relative to the wall of the housing and / or a window frame of the disk carrier opposite be provided the wall of the housing locking positive locking element.
  • At least one additional reverse rotation is provided, which can always be used when the actual reverse rotation has already been used and a repeated use is not possible. Even more advantageously, at least three additional anti-rotation locks are provided.
  • Fig.1 shows in a highly schematic view of a plant housing 20.
  • the plant housing 20 may be the housing of a RLT system or the housing of a climate chamber, as they are widely used in the industrial sector for various applications.
  • FIG Fig. 1 two viewing windows 1 are provided, which are each provided with discs and the manner of portholes allow a view of the equipment housed in the interior of the device housing 20 and machines without the door 21 must be opened for this purpose.
  • the viewing window 1 of cylindrical geometry and in an approximately cylindrical viewing port 2 within a housing wall 22 of the plant housing 20 is inserted.
  • the housing wall 22 may be the part of a door 21, a wall or the ceiling of the plant housing 20.
  • the viewing window 1 is composed of two parts.
  • the one part of the viewing window 1 is formed by a disk carrier 3, which is inserted from the inside, ie the climatic side, of the system housing 20 along the direction R 1 in the viewing port 2.
  • the second part of the viewing window 1 is formed by a further disc carrier 4, which is inserted along the direction R 2 from the outside of the plant housing 20 into the viewing port 2.
  • the housing wall 22 of the plant housing 20 can be, for example, a plant wall formed from metallic surfaces and an insulating material arranged therebetween, which is provided with the viewing opening 2 designed in the manner of a through-hole.
  • the viewing window 1 is gas-tight in the viewing opening 2 of the housing wall 22 is used on easy to assemble and leak-tight with few leaks.
  • sealing elements 17, 18 are provided, which between a circumferential Collar of the disc carrier 3, 4 and the opposite edge 2.2 of the viewing port 2 are braced.
  • the climate-side sealing element 18 has a round cross section and the outside sealing element 17 has a rectangular cross section, although other cross sections would also be conceivable.
  • Both sealing elements 17, 18 are of annular geometry and extend along the edge 2.2 of the viewing opening 2 around them.
  • the disk carrier 3 is formed lid-like and carries a window 11 of optically transparent material.
  • a window frame 7 surrounding the window pane 11 is provided.
  • a smaller diameter attachment section 9 connects.
  • the attachment portion 9 is of tubular geometry and in the embodiment integrally connected to the window frame 7.
  • both the window pane 11, as well as the surrounding window frame 7 as well as the attachment portion 9 are made of an optically transparent material and in particular a plastic material.
  • the disc carrier 3 would be made of two pieces.
  • the advantage of the non-transparent region 9 would be that it would not be possible for an observer to look through the viewing window 1 obliquely into the interior of the housing wall 22 via the inner lateral surface 2.1 of the viewing opening 2, where, for example, a mineral insulating material is located.
  • the disk carrier 3 has a fastening means 5, which is designed such that it cooperates with a corresponding fastening means 6 of the other disk carrier 4 due to a relative movement of the two fastening means 5, 6.
  • the fastening means 5 is formed by two radially inwardly projecting tabs. It can also be more tabs than fasteners 5 are used. The use of more spirally formed tabs would be conceivable. The tabs can also be made longer or shorter. It is important that they are suitable to enter a spiral of the other fastener 6 and to secure the disc carrier 3, 4 in the viewing port 2.
  • Fig. 4 shows the other disc carrier 4 in a perspective view.
  • the disk carrier 4 has a window pane 12 made of transparent material.
  • the window pane 12 is surrounded by a window frame 8, to which a fastening section 10 adjoins.
  • the configuration of the disk carrier 4 coincides with that of the disk carrier 3.
  • the disk carrier 4 may be made of one piece in a transparent material or the mounting portion 10 may be embodied as a separate piece in an opaque material.
  • the fastening elements 6 are formed in the disk carrier 4 of spiral or partially spiral-shaped elements, which are arranged on the circumference of the cylindrical mounting portion 10.
  • the fastening elements 6 are formed by a total of three spiral turn sections 6.1, 6.2 and 6.3, which are in the direction of the mounting axis M of the viewing window 1 are offset from each other.
  • a single such spiral spiral section 6.1, 6.2 or 6.3 would be sufficient for mounting the viewing window 1.
  • a possibility for rapid adaptation of the viewing window to different wall thicknesses of the housing wall 22 is provided, which will be explained in more detail below.
  • spiral turn sections 6.1, 6.2 and 6.3 are not formed continuously, but are provided on two sides lying sides corresponding to the number of fasteners 5 of the other disc carrier 3 with an insertion opening 13, in which the fastening means 5 of the other disc carrier are introduced can.
  • the insertion openings are of channel-shaped cross-section.
  • the insertion openings 13 are provided on the insertion side with an insertion bevel 14.
  • the predecessor in the assembly of the two disc carrier 3, 4 to a common viewing window 1 is in the 8 to 11 illustrated.
  • the two disc carrier 3, 4 along the mounting axis M from opposite directions R 1 , R 2 initially moved towards each other.
  • the tab-like fastening means 5 enter into the region of the insertion opening 13 until the two disc carriers 3, 4 come to rest with their window frames 7, 8 at the edge of the insertion opening 2 and a further axial movement is no longer possible.
  • the window frames 7, 8 form as far as attacks.
  • an anti-rotation device 19 arranged on the one disk carrier 13 interacts with a mating contour on the housing wall 22 in such a way that the disk carrier 4 can no longer be rotated within the viewing opening 2.
  • the rotation 19 is on the climate side Disk carrier 4 arranged.
  • the anti-rotation device 19 is formed by a form-locking element which is arranged on the window frame 8 of the disk carrier 4 and cooperates with a counter-structure on the housing wall 22 in a form-fitting manner.
  • the anti-rotation 19 is formed by a projection and the counter-structure on the housing wall 22 of a recess.
  • the anti-twist device 19 it would also be possible for the anti-twist device 19 to be formed by a recess and the counter-structure on the housing wall 22 to be formed by a projection.
  • the one disk carrier 3 relative to the other disk carrier 4 is relatively moved and thereby the fastening means 5 is actuated, i. the fastening means 5, 6 are brought into engagement with each other.
  • the relative movement is a relative rotation of the two disc carrier 3, 4, as a result of which they are helically interconnected.
  • a co-rotation of the disk carrier 4 in the viewing port 2 is prevented by the rotation 19.
  • the tab-like fastening elements 5 enter the area of the spiral sections 6.1, 6.2, 6.3, cf. also the representations in the 10 and 11 , Depending on how large the wall thickness of the housing wall 22, they reach either behind one of the spiral sections 6.1, 6.2 or 6.3 in Appendix.
  • the corresponding spiral section 6.1, 6.2 or 6.3 exerts an axial force on the fastener 5 due to its slope.
  • the two disc carrier 3, 4 move in the axial direction, compensating for any manufacturing tolerances on the housing wall 22 until the sealing elements 17, 18 are sufficiently compressed and the window is pressure-tight in the viewing opening.
  • a reverse rotation lock 15 is then made, which ensures that the two disk carrier 3, 4 during operation do not rotate relatively in the opposite direction and can solve the attachment unintentionally.
  • a bore for receiving a screwed to the housing wall 22 locking screw may be provided. Since it can be considered over the life of the viewing window but quite possibly occur that this is dismantled in the case of porous gaskets and reassembled after inserting new seals, several reverse rotation 16 are provided in the embodiment. Overall, three additional pollutantsfelden are provided for the actual reverse rotation lock 15, which are distributed approximately at angular intervals of 90 ° over the circumference of the disk carrier 3, but it can also be provided more additional anti-rotation 16.
  • Fig. 12 a view of the mounted viewing window 1 in a viewing opening 2 of a comparatively thin housing wall 22 is shown.
  • the fastening means 5 of the disc carrier 3 behind the spiral spiral portion 6.3 of the other disc carrier 4 brought into abutment, which is the window frame 7 of the disc carrier 4 closest, and secured there by turning.
  • Fig. 13 shows a mounting situation in a viewing opening 2 of a housing wall 22 of medium thickness, in which reach the attachment means 5 behind the central spiral spiral section 6.2 to the plant.
  • Fig. 14 Finally shows a mounting situation in which the fastening means 5 abut the spiral spiral section 6.3, which is arranged at the front end of the mounting portion 10.
  • the viewing window 1 can optionally be used in differently thick housing walls 22. For this purpose, it is not necessary to make any structural changes to the viewing window 1.
  • the two disc carrier 3, 4 it is not necessary for different thickness housing walls, first the two disc carrier 3, 4 several times about their own axis to rotate against each other and thereby to go through a longer spiral helix. Rather, the fastening means 5 can be inserted into the insertion, until the window frame 7, 8 of the two disc carrier 3, 4 abut the housing wall 22. Then can be made in the manner of a screw by a rotational movement, a locking of the two disc carrier 3, 4.
  • the disk carrier 3 having the helical fastening means forms a type of screw and the disk carrier 4 having the tab-like fastening elements 5 forms a kind of nut.
  • Fig. 15 finally shows once again the processes when mounting a lens 1 in an exploded view, the two parts 3, 4 according to Art a double-glazed Portauges be used in a housing wall 22 coming from two opposite directions coming.
  • fastening elements 5, 6 can be arranged on the fastening sections 9 and 10 of the two disk carriers 3, 4, which form a bayonet connection.
  • the fasteners 5, 6 may be formed in the manner of snap and locking elements, which operate by an axial relative movement of the two disc carrier 3, 4, i. latch together or release from each other.
  • the two disc carrier 3, 4 are used without additional fasteners such as particular bolts and similar elements pressure-tight in a simple and easy to install manner in the viewing port 1 of a device housing 20 and there by a relative movement, in particular a relative rotation or an axial relative movement , the two disk carrier 3, 4 can be attached pressure-tight.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
EP18161047.8A 2017-03-13 2018-03-09 Fenêtre de visualisation pour installation rlt et boîtiers de climatisation Active EP3375968B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL18161047T PL3375968T3 (pl) 2017-03-13 2018-03-09 Okienko wziernikowe do instalacji wentylacyjno-klimatyzacyjnych i obudow klimatyzatorów

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017105267.4A DE102017105267A1 (de) 2017-03-13 2017-03-13 Sichtfenster für RLT- Anlagen und Klimagehäuse

Publications (2)

Publication Number Publication Date
EP3375968A1 true EP3375968A1 (fr) 2018-09-19
EP3375968B1 EP3375968B1 (fr) 2020-05-13

Family

ID=61622392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18161047.8A Active EP3375968B1 (fr) 2017-03-13 2018-03-09 Fenêtre de visualisation pour installation rlt et boîtiers de climatisation

Country Status (4)

Country Link
EP (1) EP3375968B1 (fr)
DE (1) DE102017105267A1 (fr)
ES (1) ES2806700T3 (fr)
PL (1) PL3375968T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020078509A1 (fr) * 2018-10-15 2020-04-23 Emka Beschlagteile Gmbh & Co. Kg Fenêtre d'inspection pour des installations rlt et des chambres climatisées

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018125499A1 (de) 2018-10-15 2020-04-16 Emka Beschlagteile Gmbh & Co. Kg Sichtfenster für RLT-Anlagen und Klimakammern
DE102019104263B4 (de) * 2019-02-20 2020-10-29 Al-Ko Therm Gmbh Schauglas und Gehäuse einer Klima- und Lüftungsanlage
DE102021124427A1 (de) 2021-09-21 2023-03-23 Emka Beschlagteile Gmbh & Co. Kg. Sichtfenster
DE102021124426A1 (de) 2021-09-21 2023-03-23 Emka Beschlagteile Gmbh & Co. Kg. Sichtfenster mit Dichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US177432A (en) * 1876-05-16 Improvement in observation-tubes for doors
US4525961A (en) * 1984-04-26 1985-07-02 Thermoform A/S Double-glazed window for insertion in openings in walls or doors of a sandwich-type construction
JPH0663787U (ja) * 1993-02-17 1994-09-09 榎本金属株式会社 トイレその他の部屋の扉用明り窓
DE202008017183U1 (de) * 2008-12-30 2009-03-05 Grützner, Sabine Fensterbaugruppe

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Publication number Priority date Publication date Assignee Title
DE7915068U1 (de) 1979-05-25 1979-09-13 Hausmann, Heinrich, 5880 Luedenscheid Tuerspion
DE19701371B4 (de) 1996-01-27 2005-02-17 Volkswagen Ag Einrichtung zur Befestigung eines Reserverades in einer Reserveradmulde eines Kraftfahrzeugs
JP4782611B2 (ja) 2006-05-19 2011-09-28 榎本金属株式会社 明り窓及びその取付構造
DE202010006469U1 (de) 2010-05-05 2011-09-05 Adri Hardware Co., Ltd. Türspion
JP6203073B2 (ja) 2014-02-12 2017-09-27 Ykk Ap株式会社 小窓枠材、これを備える建具および建物壁

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US177432A (en) * 1876-05-16 Improvement in observation-tubes for doors
US4525961A (en) * 1984-04-26 1985-07-02 Thermoform A/S Double-glazed window for insertion in openings in walls or doors of a sandwich-type construction
JPH0663787U (ja) * 1993-02-17 1994-09-09 榎本金属株式会社 トイレその他の部屋の扉用明り窓
DE202008017183U1 (de) * 2008-12-30 2009-03-05 Grützner, Sabine Fensterbaugruppe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020078509A1 (fr) * 2018-10-15 2020-04-23 Emka Beschlagteile Gmbh & Co. Kg Fenêtre d'inspection pour des installations rlt et des chambres climatisées

Also Published As

Publication number Publication date
EP3375968B1 (fr) 2020-05-13
DE102017105267A1 (de) 2018-09-13
PL3375968T3 (pl) 2020-11-02
ES2806700T3 (es) 2021-02-18

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