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EP3272963B1 - Loft stairs with coplanar infill - Google Patents

Loft stairs with coplanar infill Download PDF

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Publication number
EP3272963B1
EP3272963B1 EP17180629.2A EP17180629A EP3272963B1 EP 3272963 B1 EP3272963 B1 EP 3272963B1 EP 17180629 A EP17180629 A EP 17180629A EP 3272963 B1 EP3272963 B1 EP 3272963B1
Authority
EP
European Patent Office
Prior art keywords
frame
ceiling
stairs
loft
infill
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.)
Active
Application number
EP17180629.2A
Other languages
German (de)
French (fr)
Other versions
EP3272963A1 (en
Inventor
Boguslaw Kasinski
Adam Bryniak
Lukasz Serafin
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.)
Fakro PP Sp zoo
Original Assignee
Fakro PP Sp zoo
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 Fakro PP Sp zoo filed Critical Fakro PP Sp zoo
Publication of EP3272963A1 publication Critical patent/EP3272963A1/en
Application granted granted Critical
Publication of EP3272963B1 publication Critical patent/EP3272963B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02—Stairways; Layouts thereof
    • E04F11/04—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F19/00—Other details of constructional parts for finishing work on buildings
    • E04F19/02—Borders; Finishing strips, e.g. beadings; Light coves
    • 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
    • E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
    • E06B1/62—Tightening or covering joints between the border of openings and the frame or between contiguous frames
    • 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
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/01—Trap-doors
    • 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
    • E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
    • E06B1/62—Tightening or covering joints between the border of openings and the frame or between contiguous frames
    • E06B2001/624—Tightening or covering joints between the border of openings and the frame or between contiguous frames with parts to be embedded in the stucco layer or otherwise linked to this layer

Definitions

  • the invention relates to loft stairs comprising a coplanar infill that makes the loft stairs frame being in one plane with the surface of the loft stairs flap, the infill being a finishing element for installation of the stairs in the ceiling, covering the space between the loft stairs frame and the ceiling wall.
  • Austrian patent application AT 505 683 A1 discloses loft stairs according to the preamble of claim 1.
  • Polish patent application PL 402367 refers to integrated door frame for internal or external doors, whose middle section forming the door frame is made of wood, plywood, wood-based panels, metal or plastic.
  • the outer side of the door frame parallel to the plane of the door's opening in the wall, has at least one profile element on the door leaf side and/or a profile element on the opposite side of the door leaf, this being made of metal or plastic and additionally connecting the door frame to the wall surrounding the door opening, on one or both sides in the plane of the wall.
  • loft stairs with a double closing flap and frame, which is embedded in the ceiling deeper than one of said closing flap. Additionally, loft stairs comprises side frame, which crossection is in Z- shape and which comprises sealing for tight connection with one of the closing flap.
  • the field of the invention is a loft stairs comprising a standard frame, an extendable ladder or a scissor ladder mounted in it, a flap closing the frame, and a coplanar infill that makes the frame being in one plane with the surface of the ceiling.
  • the loft stairs are installed in a ceiling opening, where said opening dimensions coresponds to dimensions of the loft stairs frame, while maintaining free play clearances for convenient installation of said stairs.
  • the loft stairs frame comprises four members, which are joined together in preferably rectangular frame which is closed from the inside of the building by means of a flap.
  • the loft stairs copmprises also at least two extendable ladder segments which are embedded on the closing flap of the stairs, and which are movable relative to other segments or extendable ladder is a scissor ladder.
  • the ladder segments and the scissor ladder are connected to the frame by means of a hinges.
  • the flap may be attached directly to the frame member by hinge connection, which allow for pivotal movement of the flap in respect to said frame member or the flap may be attached only to the first ladder segment, where the latter is directly attached to the frame member by mentioned above hinges.
  • hinge connection which allow for pivotal movement of the flap in respect to said frame member
  • the flap may be attached only to the first ladder segment, where the latter is directly attached to the frame member by mentioned above hinges.
  • a coplanar infill is located in the loft stairs installed state.
  • Said coplanar infill makes that the frame is placed in one plane with the surface of the ceiling, where said ceiling may be made of a plaster and plasterboard, covering the aforementioned free play clearances.
  • the coplanar infills are a covering strips, made particularly of aluminium, but possibly also of any other material.
  • the coplanar infill forms an integral element with the loft stairs frame when the stairs are delivered to the customer.
  • Said covering strips comprises an embedding section whose extension is an attachment arm basically parallel to the surface of the ceiling.
  • the embedding section In the assembled state, the embedding section is located in the area constituting the difference in the depth of the loft stairs frame and the closing flap in the ceiling.
  • An inner surface of the embedding section is directed towards the frame while its outer surface lies under the plaster layer or another layer covering the ceiling.
  • the attachment arm of the covering strip is an extension of the outer surface of the embedding section and serves as an element attaching the covering strip in the ceiling, while additionally the attachment arm is fixed to the ceiling by means of a screw.
  • the attachement arm is located under the outer surface of the ceiling covering, e.g. plaster, or is embedded under the thermal insulation layer of the ceiling, e.g. the plasterboard layer.
  • the covering strips are attached around the four frame members of the frame to form a closed frame around the stairs.
  • the covering strip being an integral part of the loft stairs frame, comprises the embedding section with an adhering arms, through which the strips are attached to the frame members already in a delivered to the customer loft stairs state.
  • Two adhering arms forms a pocket for the frame members.
  • the width of the covering strips pocket is defined as the distance between the inner walls of the two adhering arms of the pocket and is equal at least to the width of the end section of each frame member that fits into that pocket.
  • the embedding section has an outer surface lying under the plaster layer of the ceiling or another layer covering the ceiling.
  • Each of the aforementioned covering strips comprising any dimensions and shape that match the stairs that it is to be used with.
  • Loft stairs comprising a frame 1 closed from the outside by the flap 2, a coplanar infill that comes flush with the surface of the ceiling 4.
  • the stairs also have folding ladder segments or a scissor ladder, not shown in the drawings.
  • the infill is in the form of a covering strips 5 integral with the frame 1, the former featuring an embedding section 5' and an attachment arm 5".
  • the attachment arm 5" is located under the plaster board layer and is attached to the ceiling wall by means of a screw 7.
  • the frame 1 abuts on the embedding section 5'..
  • the integral covering strip 5 comprises a double adhering arm 5"', forming a pocket for the frame members in addition to being connected to the frame by means of fasteners preferably in the form of screws 6. From the outside, the embedding section is covered with a plaster layer.
  • the integral covering strips also forms a closed frame surrounding the stairs mounted in the ceiling.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)
  • Steps, Ramps, And Handrails (AREA)
  • Building Environments (AREA)

Description

  • The invention relates to loft stairs comprising a coplanar infill that makes the loft stairs frame being in one plane with the surface of the loft stairs flap, the infill being a finishing element for installation of the stairs in the ceiling, covering the space between the loft stairs frame and the ceiling wall.
  • Austrian patent application AT 505 683 A1 discloses loft stairs according to the preamble of claim 1.
    • Background of the invention
  • There is known solution from WO2007091171 A1 application which refers to doors, windows or lightings, where the sash features profiles that form a frame around the door, window or lighting frame. Profiles have one arm with its surface on the same plane as the surface of the wall in which the door or window is mounted.
  • There is also known solution from Polish patent application PL 402367 which refers to integrated door frame for internal or external doors, whose middle section forming the door frame is made of wood, plywood, wood-based panels, metal or plastic. The outer side of the door frame, parallel to the plane of the door's opening in the wall, has at least one profile element on the door leaf side and/or a profile element on the opposite side of the door leaf, this being made of metal or plastic and additionally connecting the door frame to the wall surrounding the door opening, on one or both sides in the plane of the wall.
  • There is known another solution from US3855746 B1 patent, presenting a profile that covers the junction of two structural elements mounted perpendicular to each other. This covering profile has two pockets in which the ends of the two elements are attached, and the outer wall of the profile covers the place where they are joined.
  • There is also know invention from patent application AT505683A1 which discloses a loft stairs with a double closing flap and frame, which is embedded in the ceiling deeper than one of said closing flap. Additionally, loft stairs comprises side frame, which crossection is in Z- shape and which comprises sealing for tight connection with one of the closing flap.
  • The field of the invention is a loft stairs comprising a standard frame, an extendable ladder or a scissor ladder mounted in it, a flap closing the frame, and a coplanar infill that makes the frame being in one plane with the surface of the ceiling.
  • The loft stairs are installed in a ceiling opening, where said opening dimensions coresponds to dimensions of the loft stairs frame, while maintaining free play clearances for convenient installation of said stairs. The loft stairs frame comprises four members, which are joined together in preferably rectangular frame which is closed from the inside of the building by means of a flap. The loft stairs copmprises also at least two extendable ladder segments which are embedded on the closing flap of the stairs, and which are movable relative to other segments or extendable ladder is a scissor ladder. The ladder segments and the scissor ladder are connected to the frame by means of a hinges.
  • The flap may be attached directly to the frame member by hinge connection, which allow for pivotal movement of the flap in respect to said frame member or the flap may be attached only to the first ladder segment, where the latter is directly attached to the frame member by mentioned above hinges. In the loft stairs installed state, its frame is embeded deeper in the ceiling than the closing flap, such that in the area of that difference in the depth of their embeding, a coplanar infill is located. Said coplanar infill makes that the frame is placed in one plane with the surface of the ceiling, where said ceiling may be made of a plaster and plasterboard, covering the aforementioned free play clearances.
  • The coplanar infills are a covering strips, made particularly of aluminium, but possibly also of any other material. The coplanar infill forms an integral element with the loft stairs frame when the stairs are delivered to the customer.
  • Said covering strips comprises an embedding section whose extension is an attachment arm basically parallel to the surface of the ceiling. In the assembled state, the embedding section is located in the area constituting the difference in the depth of the loft stairs frame and the closing flap in the ceiling. An inner surface of the embedding section is directed towards the frame while its outer surface lies under the plaster layer or another layer covering the ceiling.
  • The attachment arm of the covering strip is an extension of the outer surface of the embedding section and serves as an element attaching the covering strip in the ceiling, while additionally the attachment arm is fixed to the ceiling by means of a screw. The attachement arm is located under the outer surface of the ceiling covering, e.g. plaster, or is embedded under the thermal insulation layer of the ceiling, e.g. the plasterboard layer. The covering strips are attached around the four frame members of the frame to form a closed frame around the stairs.
  • The covering strip, being an integral part of the loft stairs frame, comprises the embedding section with an adhering arms, through which the strips are attached to the frame members already in a delivered to the customer loft stairs state. Two adhering arms forms a pocket for the frame members. The width of the covering strips pocket is defined as the distance between the inner walls of the two adhering arms of the pocket and is equal at least to the width of the end section of each frame member that fits into that pocket. The embedding section has an outer surface lying under the plaster layer of the ceiling or another layer covering the ceiling.
  • Each of the aforementioned covering strips comprising any dimensions and shape that match the stairs that it is to be used with.
  • The advantage of this solution is new loft stairs provided with an coplanar infill in the form of the covering strips located between the depth of the frame and the closing flap, covering the junction of the frame with the edge of the ceiling, lending the stairs an aesthetic appearance as seen from the room in which they are installed.
  • The solution is disclosed also in the following drawings:
    • Fig. 1 view of the closed loft stairs as seen from the room
    • Fig. 2 cross section of stairs fitted with the covering strips according to the invention
  • Loft stairs comprising a frame 1 closed from the outside by the flap 2, a coplanar infill that comes flush with the surface of the ceiling 4. The stairs also have folding ladder segments or a scissor ladder, not shown in the drawings. The infill is in the form of a covering strips 5 integral with the frame 1, the former featuring an embedding section 5' and an attachment arm 5". In the installed state, as shown in Fig. 2, the attachment arm 5" is located under the plaster board layer and is attached to the ceiling wall by means of a screw 7. The frame 1 abuts on the embedding section 5'.. The integral covering strip 5 comprises a double adhering arm 5"', forming a pocket for the frame members in addition to being connected to the frame by means of fasteners preferably in the form of screws 6. From the outside, the embedding section is covered with a plaster layer. The integral covering strips also forms a closed frame surrounding the stairs mounted in the ceiling.

Claims (5)

  1. A loft stairs comprising
    - a frame (1) which comprises four members arranged to be joined together to form a rectangular frame,
    - a closing flap (2), movable in relation to the frame (1),
    - at least two folding ladders or scissor segments arranged to be mounted in the frame (1) and embedded on the closing flap (2), and the frame (1) is, in the installed state, embedded deeper in the ceiling than the closing flap (2), and in the area of that difference in depth of their seating a coplanar infill is located such that, in the installed state, the coplanar infill is flush with the outer surface of the ceiling (4);
    characterised in that the coplanar infill consists of covering strips (5) integral with the frame (1), each integral covering strip (5) comprising an embedding section (5') and an attachment arm (5") constituting a product ready for installation when the stairs are delivered, each integral covering strip (5) further comprising two adhering arms (5"') forming a pocket for a corresponding frame member, wherein a width of the pocket corresponds to the distance between the inner walls of the two adhering arms (5"') of the pocket, and is at least equal to the width of the end section of the frame members of the frame (1).
  2. Loft stairs according to claim 1 , characterized in that the attachment arm (5") when installed, lies beneath the surface of the ceiling (4).
  3. Loft stairs according to claim 2, characterized in that the attachment arm (5"), when installed, lies beneath the outer layer of the ceiling (4), particularly under the plaster layer.
  4. Loft stairs according to claim 2 or 3, characterized in that the attachment arm (5") is fixable to the ceiling wall by means of a screw (7).
  5. Loft stairs according to claim 1, or 2, or 3, or 4, , characterized in that the covering strips (5) form a closed frame when installed in the ceiling.
EP17180629.2A 2016-07-19 2017-07-11 Loft stairs with coplanar infill Active EP3272963B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL418022A PL236861B1 (en) 2016-07-19 2016-07-19 Loft stairs with flush filling

Publications (2)

Publication Number Publication Date
EP3272963A1 EP3272963A1 (en) 2018-01-24
EP3272963B1 true EP3272963B1 (en) 2020-01-29

Family

ID=59315464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17180629.2A Active EP3272963B1 (en) 2016-07-19 2017-07-11 Loft stairs with coplanar infill

Country Status (2)

Country Link
EP (1) EP3272963B1 (en)
PL (1) PL236861B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL446963A1 (en) * 2023-12-04 2025-06-09 Fakro Pp Spółka Z Ograniczoną Odpowiedzialnością Finishing set for attic stairs, attic stairs intended for installation in a building partition and method of installing an attic stairs box in a building partition

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3855746A (en) 1971-01-25 1974-12-24 R Leggiere Multi-purpose trim for door and window frames
AT347658B (en) * 1974-07-03 1979-01-10 Minka Treppen Ges M B H LOCKING DEVICE FOR OPENINGS OF BUILDINGS, ESPEC. HATCH
AT505683B1 (en) * 2005-01-12 2009-05-15 Minka Holz Und Metallverarbeit ATTIC STAIRS
ITPI20060015A1 (en) 2006-02-09 2007-08-10 Pucci Saoro S R L FRAME STRUCTURE FOR WINDOWS, FURNITURE OR ILLUMINATIONS RASO MURO.
AT504484B1 (en) * 2007-03-29 2008-06-15 Wipplinger Robert Garret staircase has hatch closure whose housing has a surrounding flange over a rim flange
PL402367A1 (en) 2013-01-04 2014-07-07 Jackiewicz Wiesław Entra Integrated door frame

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
PL236861B1 (en) 2021-02-22
PL418022A1 (en) 2018-01-29
EP3272963A1 (en) 2018-01-24

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