GB2278625A - Garage or like doors or panels - Google Patents

Garage or like doors or panels Download PDF

Info

Publication number
GB2278625A
GB2278625A GB9408853A GB9408853A GB2278625A GB 2278625 A GB2278625 A GB 2278625A GB 9408853 A GB9408853 A GB 9408853A GB 9408853 A GB9408853 A GB 9408853A GB 2278625 A GB2278625 A GB 2278625A
Authority
GB
United Kingdom
Prior art keywords
framework
shell
door
sheet
panel according
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
GB9408853A
Other versions
GB2278625B (en
GB9408853D0 (en
Inventor
Alan Bury
Ernest Kenneth Hammond
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.)
KING DOOR PRODUCTS Ltd
Original Assignee
KING DOOR PRODUCTS Ltd
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 KING DOOR PRODUCTS Ltd filed Critical KING DOOR PRODUCTS Ltd
Publication of GB9408853D0 publication Critical patent/GB9408853D0/en
Publication of GB2278625A publication Critical patent/GB2278625A/en
Application granted granted Critical
Publication of GB2278625B publication Critical patent/GB2278625B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/20—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of plastics
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/38—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure with attached ribs, flanges, or the like, e.g. framed panels
    • E04C2/384—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure with attached ribs, flanges, or the like, e.g. framed panels with a metal 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
    • 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
    • E06B3/7001—Coverings therefor; Door leaves imitating traditional raised panel doors, e.g. engraved or embossed surfaces, with trim strips applied to the surfaces
    • 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
    • E06B3/72—Door leaves consisting of frame and panels, e.g. of raised panel type
    • E06B3/78—Door leaves consisting of frame and panels, e.g. of raised panel type with panels of plastics
    • 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
    • E06B2003/7044—Garage 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
    • 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
    • E06B2003/7098—Door leaves with bracing means crossing each other, e.g. diagonally disposed

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Securing Of Glass Panes Or The Like (AREA)

Abstract

A garage or like large area door or panel 11 comprising a formed shell 12 of sheet material, a stiffening framework 15 and a curable conforming reinforcing material 18 applied in uncured state to conform to the shell and framework and cured, and a method for making same. <IMAGE>

Description

GARAGE OR LIKE DOORS OR PANELS This invention relates to garage or like large area doors or panels.
Lightweight garage doors - particularly but not exclusively of the "up and over" type - have been made by vacuum forming sheet material such as acrylonitrile butadiene styrene (ABS) and securing a timber frame.
The ABS sheet, typically 2 mm thick, is very flexible and the resulting structure depends for its rigidity almost entirely on the timber frame. If cost and weight are to be kept down to reasonable levels, such doors are unacceptably flexible.
It is known to impart rigidity to vacuum formed ABS sheet material artefacts such as shower trays and internal doors and panels such for example as doors and panels of freezers and refrigerators, by filling with an expandable foam material and expanding and curing the foam material in situ. This technique is not suitable for large area doors or panels.
It is also known selectively to apply fibreglass reinforcement to deeply formed items such as baths and shower bases, where the underside of the shell is often sprayed with a glass fibre reinforcement, as well as or instead of having strips of uncured mat placed strategically principally to conform to the more acutely curved portions.
Spraying cannot conveniently be used in connection with large area panels, and garage doors and like panels do not present the acutely curved regions where reinforcing mat has been used effectively on smaller items.
The present invention provides improved garage doors and like panels and methods for making them that make surprising use of existing reinforcement materials.
The invention comprises a garage or like large area door or panel comprising a formed shell of sheet material, a stiffening framework and a curable conforming reinforcing material applied in uncured state to conform to the shell and framework and cured.
The framework may comprise a metal, e.g. a galvanised steel, surround, and bracing bars, which may be diagonal, and which may comprise plastics material, e.g. extruded square hollow section bars.
The conforming reinforcing material may comprise a glass reinforced plastics material.
The sheet material may be vacuum formed, and may comprise acrylonitrile butadiene styrene (ABS), which may be acrylic-capped.
The sheet material may be 2 mm thick.
The invention also comprises a method for making a garage or like large area door or panel comprising forming a shell of sheet material, applying to the formed sheet a stiffening framework, and applying to the shell and framework a curable conforming reinforcing material in its uncured state to conform to the shell and framework and curing the reinforcing material.
The sheet may be formed as a shallow dish with upturned edges - and, optionally, decorative and to some extent rigidifying moulding resembling wood panelling or other conventional material constructional techniques, and the framework inserted as a metal, for example, a galvanised steel, surround contained within the edges to which bracing bars or struts are attached. The bracing bars may include diagonal members or members extending between the edges in the form of a lattice, for example.
The reinforcing material may be applied as a conforming mat and conformed to the shell and framework so as to key thereto - it is, in the absence of any automated method, a matter for hand lay-up. The reinforcing material can be left to cure to set hard with elapse of time after application.
One embodiment of a garage door panel and a method of making the same will now be described with reference to the accompanying drawings, in which Figure 1 is a perspective view from the rear of a vacuum formed sheet material shell for a garage door; Figure 2 is a view from the rear of the shell of Figure 1 with a stiffening framework; and Figure 3 is a section on a larger scale on the line III-III of Figure 2.
The drawings illustrate a garage door panel 11 which is of large area, being essentially a square panel of side 2135 mm or thereabouts; a double garage door could be twice as wide. The panel 11 comprises a vacuum formed shell 12 (Figure 1) of 2 mm ABS sheet, and is in the form of a shallow dish with upturned edges 13 and decorative and to some extent rigidifying moulded features resembling wood panelling in a traditional construction; other patterns of moulding could equally well be used.
A stiffening framework 14, comprising a galvanised steel surround 15 inside the upturned edges 13 and diagonal struts or braces 16 of hollow, square section plastics extrusion fitting in a central boss 17, is secured to the shell 12 in any suitable fashion as by rivets, bolts and/or adhesive.
A mouldable, curable glass reinforced plastic resin mat 18 is then applied over the entire internal face of the shell 12 and the framework 14 so as to conform and key thereto and is then left to cure and harden. This has the effect of rigidifying the shell 12 and also fixing the framework 14 against distortion which adds further to the rigidity of the panel 11.
The improved flexural strength and rigidity of the door due to the g.r.p. reinforcement are substantially greater than would be obtained from adding an equal weight of framework.
Even though there is no mechanical or automatic way to apply the g.r.p. material, and manual wet-laying is expensive, nevertheless, the improvement brought about by the g.r.p. material represents a substantial added value. To achieve the same rigidity and flexural strength in panels of this nature, resort would have to be had to the use of much thicker sheet material for the shell and a much stiffer and heavier stiffening framework, both of which would add substantially to both cost and weight.
The g.r.p. material, further, gives an improved substrate for sinking screws for attachment of door furniture, where this cannot be secured, or completely secured, to the framework.

Claims (13)

1. A garage or like large area door or panel comprising a formed shell of sheet material, a stiffening framework and a curable conforming reinforcing material applied in uncured state to conform to the shell and framework and cured.
2. A door or panel according to claim 1, in which the framework comprises a metal surround.
3. A door or panel according to claim 1 or claim 2, in which the framework comprises plastics material bracing bars.
4. A door or panel according to any one of claims 1 to 3, in which the conforming reinforcing material comprises a glass reinforced plastics material.
5. A door or panel according to any one of claims 1 to 4, in which the sheet material is vacuum formed.
6. A door or panel according to any one of claims 1 to 5, in which the sheet material comprises acrylonitride butadiene styrene (ABS) sheet.
7. A door or panel according to claim 6, in which the ABS sheet is acrylic-capped.
8. A door or panel according to any one of claims 1 to 7, in which the sheet material is 2 mm thick.
9. A method for making a garage or like large area door or panel comprising forming a shell of sheet material, applying to the formed sheet a stiffening framework, and applying to the shell and framework a curable conforming reinforcing material in its uncured state to conform to the shell and framework and curing the reinforcing material.
10. A method according to claim 9, in which the sheet is formed as a shallow dish with upturned edges and the framework includes a metal surround contained within the edges to which bracing bars are attached.
11. A method according to claim 9 or claim 10, in which the reinforcing material is applied as a conforming mat and conformed to the shell and framework so as to key thereto.
12. A method according to any one of claims 9 to 11, in which the reinforcing material curves to set hard with elapse of time after application.
13. A method according to any one of claims 9 to 12, in which the sheet is vacuum formed to form a shell.
GB9408853A 1993-05-22 1994-05-04 Garage or like doors or panels Expired - Fee Related GB2278625B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB939310583A GB9310583D0 (en) 1993-05-22 1993-05-22 Garage or like doors or panels

Publications (3)

Publication Number Publication Date
GB9408853D0 GB9408853D0 (en) 1994-06-22
GB2278625A true GB2278625A (en) 1994-12-07
GB2278625B GB2278625B (en) 1996-07-03

Family

ID=10735955

Family Applications (2)

Application Number Title Priority Date Filing Date
GB939310583A Pending GB9310583D0 (en) 1993-05-22 1993-05-22 Garage or like doors or panels
GB9408853A Expired - Fee Related GB2278625B (en) 1993-05-22 1994-05-04 Garage or like doors or panels

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB939310583A Pending GB9310583D0 (en) 1993-05-22 1993-05-22 Garage or like doors or panels

Country Status (1)

Country Link
GB (2) GB9310583D0 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2321267A (en) * 1997-01-16 1998-07-22 Cardale Group Ltd Garage door panel with a metal framework adhesively bonded to a vacuum formed plastic facing sheet.
GB2342074A (en) * 1998-09-15 2000-04-05 Rover Group A motor vehicle
US8438816B2 (en) 2008-10-23 2013-05-14 John Murchie Composite panel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0019180A1 (en) * 1979-05-17 1980-11-26 Rheinhold & Mahla GmbH Method of producing fire-proof structural elements
GB2203476A (en) * 1987-04-15 1988-10-19 Schroeders Theo A fire-barrier door
US4779325A (en) * 1985-11-18 1988-10-25 Willis Mullet Method of making an overhead door panel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0019180A1 (en) * 1979-05-17 1980-11-26 Rheinhold & Mahla GmbH Method of producing fire-proof structural elements
US4779325A (en) * 1985-11-18 1988-10-25 Willis Mullet Method of making an overhead door panel
GB2203476A (en) * 1987-04-15 1988-10-19 Schroeders Theo A fire-barrier door

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2321267A (en) * 1997-01-16 1998-07-22 Cardale Group Ltd Garage door panel with a metal framework adhesively bonded to a vacuum formed plastic facing sheet.
GB2321267B (en) * 1997-01-16 2000-12-20 Cardale Group Ltd A garage door or garage door panel including a reinforcing framework
GB2342074A (en) * 1998-09-15 2000-04-05 Rover Group A motor vehicle
US8438816B2 (en) 2008-10-23 2013-05-14 John Murchie Composite panel
US8875474B2 (en) 2008-10-23 2014-11-04 John Murchie Composite panel

Also Published As

Publication number Publication date
GB9310583D0 (en) 1993-07-07
GB2278625B (en) 1996-07-03
GB9408853D0 (en) 1994-06-22

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20000504