GB2308400A - Fire door having door cavity enclosed by facing panels with at least one fire resistant member spaced therein. - Google Patents

Fire door having door cavity enclosed by facing panels with at least one fire resistant member spaced therein. Download PDF

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Publication number
GB2308400A
GB2308400A GB9626132A GB9626132A GB2308400A GB 2308400 A GB2308400 A GB 2308400A GB 9626132 A GB9626132 A GB 9626132A GB 9626132 A GB9626132 A GB 9626132A GB 2308400 A GB2308400 A GB 2308400A
Authority
GB
United Kingdom
Prior art keywords
door
fire resistant
cavity
resistant member
framework
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.)
Withdrawn
Application number
GB9626132A
Other versions
GB9626132D0 (en
Inventor
Laurence Keith Kovacs
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB9626132D0 publication Critical patent/GB9626132D0/en
Publication of GB2308400A publication Critical patent/GB2308400A/en
Withdrawn legal-status Critical Current

Links

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
    • E06B3/70—Door leaves
    • E06B3/82—Flush doors, i.e. with completely flat surface
    • E06B3/822—Flush doors, i.e. with completely flat surface with an internal foursided frame
    • E06B3/825—Flush doors, i.e. with completely flat surface with an internal foursided frame with a wooden frame
    • 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
    • E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
    • 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
    • E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
    • E06B5/161—Profile members therefor
    • 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
    • E06B3/70—Door leaves
    • E06B3/7015—Door leaves characterised by the filling between two external panels
    • E06B2003/703—Door leaves characterised by the filling between two external panels containing a metallic layer
    • 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
    • E06B3/70—Door leaves
    • E06B2003/7059—Specific frame characteristics
    • E06B2003/7061—Wooden frames
    • E06B2003/7071—Wooden frames made of a plurality of separate blocks or strips
    • 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
    • E06B3/70—Door leaves
    • E06B2003/7059—Specific frame characteristics
    • E06B2003/7061—Wooden frames
    • E06B2003/7073—Wooden frames with fire retardant measures in frame

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Special Wing (AREA)

Abstract

A fire door comprising a peripheral frame 10, with facing panels 26,28 enclosing a door cavity 12, across which at least one fire resistant member 34 is positioned, spaced from one or both facing panels 26,28. The fire resistant members are mounted in grooves in the frame 40, which can be fitted with metal channels to add to the door's resistance to buckling in a fire. Also disclosed is that the frame members can be made from two or more parts side by side, joined by a tongue and groove arrangement 22.

Description

IMPROVEMENTS IN OR RELATING TO FIRE RESISTING DOORS The present invention concerns improvements in or relating to fire resisting doors.
A popular door for use in domestic and commercial situations comprises an inner frame faced on both sides with a sheet material, for example, plywood. A door with only these components is effectively hollow and does not present sufficient resistance to a fire passing through a doorway closed by the door. As a result, it is common practice to fill the space defined by the frame and the facing sheets entirely full of a fire resistant material and whereas this increases the fire resistance of the door to an acceptable value, it also increases the weight of the door. The weight increase is such that normally two operatives are required to safely handle and hang to door in a door frame. The ironmongery for a door of this nature, for example, hinges, automatic door closers etc. have to be sufficiently robust to cope with the increased weight.
These handling requirements and ironmongery requirements are disadvantageous and it is an object of the present invention to obviate or mitigate these disadvantages.
According to the present invention there is provided a door comprising a peripheral framework surrounding a door cavity, facing sheets on each side of the framework enclosing the cavity and a fire resistant member extending over the cavity with an air space on at least one side thereof.
Preferably the fire resistant member is mounted by the framework and spaced from each spacing sheet. Alternatively it is mounted across at least that part of the inner face of at least one of said sheets which enclose the cavity. Preferably it is mounted across those parts of the inner faces of both sheets which enclose the cavity.
Preferably the framework is fabricated from wood and it may comprise two side members, a top member and a bottom member. The side members may indude two components connected in side-by-side relationship by a tongue and groove or any other suitable joint arrangement.
Preferably the framework includes one or more cross members extending across the cavity.
Preferably the facing sheets are formed from plywood, hardboard, pressed sheet or any other suitable material.
Preferably the fire resistant member is formed from fire resistant board, paper or fabric or cloth or any product treated to give it fire resistant properties.
Preferably the fire resistant member is mounted in grooves formed in the face of the framework surrounding the cavity. The grooves may include metal channel members fitted therein.
An embodiment of the present invention will now be described by way of example only with reference to the accompanying drawings, in which:- Fig. 1 shows an elevation of a door in its frame; Fig. 2 shows an elevation of the door with a facing panel removed; Fig. 3 shows a cross-sectional view taken on the line A-A of Fig. 1; and Fig. 4 shows a cross-sectional view taken on the line B-B of Fig. 1.
A door comprises a rectangular framework 10 formed from a suitable softwood material and surrounds a door cavity 12. The frame comprises two side members 14,16, a top rail 18 and a bottom rail 20. Conveniently the sides and rails are formed from an inner and outer component arranged in side-by-side relationship and joined by a tongue and groove joint 22. The top rail can be joined to the side rails by any convenient means, for example, nails or other fasteners, mortise and tenon, adhesive or tongue and groove joints.
The frame-work member includes also a cross member 24 extending between the two side members.
The door is provided with front and rear facing sheets 26,28 which are, conveniently, of plywood, hardboard or any other suitable sheet material.
The door furniture, for example, hinges 30 and handles 32 are conventional and as they do not form part of the present invention they will not be described herein.
A fire resistant member in the form of a fire resistant board 34 is mounted by the frame 10 within the cavity 12 and extends over the entire area of the cavity.
An insulating sheet 36 extends over the cavity being attached either to the fire resistant member 34 or the inner face of each facing sheet 26, 28 or both. The insulating sheet 36 is of aluminium foil is fixed by any suitable fire resistant means preferably to both faces of the fire member 34.
The fire resistant member is spaced from the inner faces of the facing sheets 26, 28 so that, essentially, the door remains hollow.
The fire resistant member 34 is formed from any suitable material and may, for example, be an intumescent, refractory or ceramic board, intumescent, refractory or ceramic paper, intumescent, refractory or ceramic fabric or cloth. The fire resistant member may be formed from a suitable material coated with a fire resistant coating. It is relatively lightweight and does not materially add to the overall weight of the door. It is located in grooves 40 formed in the framework. Conveniently it may comprise two portions, the joint 42 between each portion being masked by the cross member 24.
Various modifications could be made without departing from the scope of the invention, for example the location of the fire resistant member can be moved from the central plane of the door to against the inner face of one but preferably both of the facing sheets. Aluminium foil or any other suitable sheet-like insulating material is applied over the inwardly facing faces of the or each fire retardant member in this modification.
The grooves 40 may have metal channels (not shown) fitted therein.
These metal channels receive the edges of the members 34 but also serve to reinforce the frame and reduce the tendency of the frame to buckle in a fire.
In a further modification the frame-work can take any suitable form, for example it could be fabricated from square section tubular metal. It is preferable that the framework is rectangular and of sufficiently lightweight construction to provide adequate strength for the door for a self-weight reduced to a minimum.
A modified fire resistant member could be provided by a glass cloth, which in addition could be coated with all intumescent material.
In a further modification the side members, top and bottom rails of the doors could be made up from three or more components arranged in side by side relationship and joined by joints other than tongue and groove joints, said alternative joints having a contact surface over greater than a face-to-face flat joint.
The groove for receiving the fire resistant member could be substituted by a rebate and an infill bead.
In a further modification the space between the fire resistant member and the facing sheets could be filled with a lightweight fire resistant and perhaps also insulating material.

Claims (14)

aaixn:-
1. A door comprising a peripheral framework surrounding a door cavity, facing sheets on each side of the framework enclosing the cavity and a fire resistant member extending over the cavity with an air space on at least one side thereof.
2. A door as claimed in claim 1, in which the fire resistant member is mounted by the framework and spaced from each spacing sheet.
3. A door as claimed in claim 1, in which the first resistant member is mounted across at least that part of the inner face of at least one of said sheets which enclose the cavity.
4. A door as claimed in claim 3, in which the fire resistant member is mounted across those parts of the inner faces of both sheets which enclose the cavity.
5. A door as claimed in any of the preceding claims, in which the framework is fabricated from wood.
6. A door as claimed in claim 5, in which the framework comprises two side members, a top member and a bottom member.
7. A door as claimed in claim 6, in which the side members include two components connected in side-by-side relationship by a tongue and groove or any other suitable joint arrangement.
8. A door as claimed in claim 6 or claim 7, in which the framework includes one or more cross members extending across the cavity.
9. A door as claimed in any of the preceding claims, in which the facing sheets are formed from plywood, hardboard, pressed sheet or any suitable material.
10. A door as claimed in any of the preceding claims, in which the fire resistant member is formed from fire resistant board1 paper or fabric or cloth or any product treated to give it fire resistant properties.
11. A door as claimed in any of the preceding claims, in which the fire resistant member is mounted in grooves formed in the face of the framework surrounding the cavity.
12. A door as claimed in claim 11, in which the grooves include metal channel members fitted therein.
13. A door substantially as hereinbefore described with reference to the accompanying drawings.
14. Any novel subject matter or combination including novel subject matter disclosed, whether or not within the scope of or relating to the same invention as any of the preceding claims.
GB9626132A 1995-12-22 1996-12-17 Fire door having door cavity enclosed by facing panels with at least one fire resistant member spaced therein. Withdrawn GB2308400A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9526398.4A GB9526398D0 (en) 1995-12-22 1995-12-22 Improvements in or relating to fire resisting doors

Publications (2)

Publication Number Publication Date
GB9626132D0 GB9626132D0 (en) 1997-02-05
GB2308400A true GB2308400A (en) 1997-06-25

Family

ID=10785991

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9526398.4A Pending GB9526398D0 (en) 1995-12-22 1995-12-22 Improvements in or relating to fire resisting doors
GB9626132A Withdrawn GB2308400A (en) 1995-12-22 1996-12-17 Fire door having door cavity enclosed by facing panels with at least one fire resistant member spaced therein.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB9526398.4A Pending GB9526398D0 (en) 1995-12-22 1995-12-22 Improvements in or relating to fire resisting doors

Country Status (1)

Country Link
GB (2) GB9526398D0 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1103692A2 (en) * 1999-11-26 2001-05-30 Uniarte, S.A. Fireproof security door
WO2002077403A1 (en) * 2001-03-22 2002-10-03 Environmental Seals Ltd Fire doors and panels
EP1643075A2 (en) * 2004-10-04 2006-04-05 Environmental Seals Ltd. Fire doors
EP1746242A2 (en) * 2005-07-21 2007-01-24 Environmental Seals Ltd. Fire door
GB2450728A (en) * 2007-07-04 2009-01-07 Jeld Wen Uk Ltd Fire resistant door
US7721500B2 (en) 2002-10-31 2010-05-25 Jeld-Wen, Inc. Multi-layered fire door and method for making the same
GB2620693A (en) * 2022-09-27 2024-01-17 Scotdor A Partnership Under Scots Law An improved door leaf

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB294407A (en) * 1927-10-19 1928-07-26 Leonard Middleton Improvements in doors for buildings
US4118543A (en) * 1976-11-16 1978-10-03 Fenestra Reflectant foil insulated steel doors
GB2135373A (en) * 1983-02-21 1984-08-30 Longden Doors Limited Doors
GB2154639A (en) * 1984-02-11 1985-09-11 Chubb Security Projects Door
EP0296690A1 (en) * 1987-06-24 1988-12-28 Adrianus Jacobus Zwaan A sound-damping wall element having a frame and at least two panels
US4811538A (en) * 1987-10-20 1989-03-14 Georgia-Pacific Corporation Fire-resistant door
WO1994004784A1 (en) * 1992-08-20 1994-03-03 Georgia-Pacific Corporation Gypsum fiberboard door frame

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB294407A (en) * 1927-10-19 1928-07-26 Leonard Middleton Improvements in doors for buildings
US4118543A (en) * 1976-11-16 1978-10-03 Fenestra Reflectant foil insulated steel doors
GB2135373A (en) * 1983-02-21 1984-08-30 Longden Doors Limited Doors
GB2154639A (en) * 1984-02-11 1985-09-11 Chubb Security Projects Door
EP0296690A1 (en) * 1987-06-24 1988-12-28 Adrianus Jacobus Zwaan A sound-damping wall element having a frame and at least two panels
US4811538A (en) * 1987-10-20 1989-03-14 Georgia-Pacific Corporation Fire-resistant door
WO1994004784A1 (en) * 1992-08-20 1994-03-03 Georgia-Pacific Corporation Gypsum fiberboard door frame

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"The fire protection handbook", pages 47 & 48, published September 1987, Cape Boards Limited, *
Iver Lane, Uxbridge, UB8 2JQ. *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1103692A2 (en) * 1999-11-26 2001-05-30 Uniarte, S.A. Fireproof security door
EP1103692A3 (en) * 1999-11-26 2002-10-09 Uniarte, S.A. Fireproof security door
WO2002077403A1 (en) * 2001-03-22 2002-10-03 Environmental Seals Ltd Fire doors and panels
US7721500B2 (en) 2002-10-31 2010-05-25 Jeld-Wen, Inc. Multi-layered fire door and method for making the same
EP1643075A2 (en) * 2004-10-04 2006-04-05 Environmental Seals Ltd. Fire doors
EP1643075A3 (en) * 2004-10-04 2006-12-13 Environmental Seals Ltd. Fire doors
EP1746242A2 (en) * 2005-07-21 2007-01-24 Environmental Seals Ltd. Fire door
EP1746242A3 (en) * 2005-07-21 2008-02-20 Environmental Seals Ltd. Fire door
GB2450728A (en) * 2007-07-04 2009-01-07 Jeld Wen Uk Ltd Fire resistant door
GB2450728B (en) * 2007-07-04 2009-09-30 Jeld Wen Uk Ltd Fire resistant doors
GB2620693A (en) * 2022-09-27 2024-01-17 Scotdor A Partnership Under Scots Law An improved door leaf
EP4345242A1 (en) * 2022-09-27 2024-04-03 Scotdor, a partnership under Scots Law An improved door leaf

Also Published As

Publication number Publication date
GB9626132D0 (en) 1997-02-05
GB9526398D0 (en) 1996-02-21

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)