WO2001094722A1 - Connector for cornices - Google Patents
Connector for cornices Download PDFInfo
- Publication number
- WO2001094722A1 WO2001094722A1 PCT/AU2001/000666 AU0100666W WO0194722A1 WO 2001094722 A1 WO2001094722 A1 WO 2001094722A1 AU 0100666 W AU0100666 W AU 0100666W WO 0194722 A1 WO0194722 A1 WO 0194722A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- connector
- cornice
- strips
- wall
- strip
- Prior art date
Links
Classifications
-
- 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
- E04F19/04—Borders; Finishing strips, e.g. beadings; Light coves for use between floor or ceiling and wall, e.g. skirtings
- E04F19/0436—Borders; Finishing strips, e.g. beadings; Light coves for use between floor or ceiling and wall, e.g. skirtings between ceiling and wall
-
- 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
- E04F19/04—Borders; Finishing strips, e.g. beadings; Light coves for use between floor or ceiling and wall, e.g. skirtings
- E04F19/0459—Borders; Finishing strips, e.g. beadings; Light coves for use between floor or ceiling and wall, e.g. skirtings characterised by the fixing method
- E04F19/0477—Plinths fixed by means of adhesive
Definitions
- This invention relates to a connector for cornices.
- This invention also relates to a cornice assembly including a plurality of cornice strips and connectors between adjacent cornice strips. It also extends to a method of mounting a cornice assembly on a wall, eg of a house.
- the invention relates particularly but not exclusively to cornice strips having a concave outer or front surface and made of plasterboard. These cornices are commonly found in modern Australian homes. It will be convenient to hereinafter describe the invention with reference to this example application. However it is to be clearly understood that the invention is capable of broader application.
- Cornice assemblies typically comprise a plurality of cornice strips arranged end to end along the internal walls of a house.
- the cornice strips are positioned at the top of the walls bridging diagonally across the intersection of the wall with the ceiling when viewed in section. Thus the cornice strips conceal the junction or intersection between the wall and ceiling.
- the purpose of the cornice assembly is to provide a finished look to the internal walls.
- Cornice strips contain aesthetic features, e.g. in the form of an arched outer surface or other more complex features.
- the cornice strip is affixed to the wall and ceiling by means of cornice adhesive at respectively the top and bottom of the strip.
- the basic structure of a cornice assembly is shown in Fig. 2.
- cornice adhesive which is applied to the ends of the cornice strips and which adheres the ends to each other when they are in end to end abutment.
- This corner attachment of the cornice strips is shown in Fig. 1.
- cornice strips are also arranged end to end in linearly extending fashion, e.g. on lengthy linear sections of wall.
- a problem with existing cornices is that adjacent cornice strips are prone to detaching from each other and leaving an unsightly crack as shown in Fig.3.
- the problem is widespread in the building industry. Very often the cracking occurs soon after the cornice assembly has been fitted.
- the cracks are ugly and detract from the internal finish in a home.
- the cracks are also a major problem for the building industry who are often required to fix the cracks after they have completed a contract. This is a major productivity cost in an industry which traditionally has thin margins. Often the plasterers bear the brunt of this problem being called out to fix cracks for no charge. In addition after the cracks have been fixed they often reappear.
- a connector for connecting adjacent cornice strips to each other including: an element having front and rear major surfaces, the rear surface in use being adjacent to both a ceiling and/or a wall, and the front surface in use having a pair of cornice strips arranged end to end mounted thereto so that the connector is sandwiched between the wall and the cornice strips, the element overlapping the point of interconnection of the cornice strips so as to enable each of the cornice strips to be adhered to the front major surface thereof.
- the applicant has recognised that the end to end adhesion of adjacent cornice strips with cornice adhesive does not produce a strong joint and a small amount of movement can cause it to crack.
- the applicant has therefore focussed on strengthening the attachment of adjacent cornice strips to each other rather than trying to identify and remove the source of the movement of the wall and/or ceiling. This is different to prior approaches that have focussed on the source of the movement and how to accommodate it.
- the face to face contact of connector to cornice strips as distinct from the edge to edge contact of cornice strips provides a substantially greater surface area in adhesive contact with the cornice strips and this provides for a more secure attachment. This attachment resists the strips from moving apart from each other and producing a visible crack.
- the element is mounted to both the ceiling and the wall, eg directly, although this is not essential. It may for example be mounted to the wall by means of an extension extending from the element, eg downwardly to a point spaced from the element.
- the element may comprise first and second portions extending substantially perpendicular to each other. This enables the connector to be used to attach cornice strips to each other at points where the wall surface forms a perpendicular corner.
- Each of the first and second portions may have a length of at least five centimetres, preferably at least 10 centimetres.
- the connector may extend at least five centimetres on either side of the junction of adjacent cornice strips, preferably at least seven centimetres, most preferably at least 10 centimetres.
- the front major surface of the connector element is concave and the rear major surface is convex. This way the front surface complements the rear surface of the strip facilitating a face to face abutme ⁇ t of the element and strip across the full face of the element.
- cornice adhesive or cornice cement is used to attach the element to the strips.
- other adhesive materials may also be used.
- the element may have a plurality of apertures defined therein from the front to the rear major surfaces.
- the apertures may be arranged broadly in the form of an array and there are at least 10 said apertures more preferably at least 20 apertures.
- the apertures enable adhesive to pass through the element from the front to rear surfaces
- the apertures enable adhesive to pass through the element from the front to rear surfaces. It is desirable that the apertures are spread across the area of the area of the element to permit the passage of adhesive there through across the full surface area thereof.
- the connector may be made of a plastics material, eg polyethylene, eg by an injection moulding process.
- the connector may be made of substantially the same material as the cornice strips, eg. a plaster board type material. This is convenient if standard cornice adhesives are to be used as the adhesive bonds strongly to this material.
- the connector element is a unitary piece of material.
- the element may be configured to connect cornice strips forming an external mitre, e.g. on an external corner of a wall.
- the element may be configured to connect cornice strips forming an internal mitre, e.g. on an internal corner of a wall.
- the element may be linearly extending for connecting cornice strips extending linearly with respect to each other, eg a butt attachment.
- the connector will also be sufficiently thick to confer the appropriate structural rigidity on the element. At the same time the connector must fit into the space between the cornice strips and the walls. This is a very limited and confined space and will certainly impose constraints on the thickness of the connector. The space constraints alluded to above are particularly severe for connectors for internal mitres.
- a cornice strip assembly including at least one connector as described above with reference to the first aspect of the invention, and a plurality of cornice strips attached end to end mounted over and adhered to the front major face of the connector.
- the assembly may include two or more cornice strips, typically more than two cornice strips and a connector at each point of interconnection of adjacent cornice strips.
- the connectors may include any one or more of the optional or preferred features of the connector described above, for example first and second portions extending perpendicularly to each other.
- cornice assembly may also include adhesive for adhering the connectors to the respective cornice strips eg cornice adhesive.
- the major face of the connector overlaying the cornice strips is adhered to the cornice strips across substantially the full face thereof providing a strong attachment.
- the invention also extends to a building structure, eg a house, including at least one cornice assembly as described above with respect to the second aspect of the invention.
- a method of mounting cornice strips to a wall and a ceiling of a structure including: providing a connector comprising front and rear major surfaces and a plurality of apertures extending through the element from the front to the rear surface; applying adhesive to the rear surface of the connector; placing the connector in position on the wall and/or ceiling with the adhesive holding the connector in position ; placing a first cornice strip in position superimposed over a first portion of the connector; pressing the cornice strip against the connector so that adhesive oozes through the apertures in the connector onto the front surface thereof and attaches the connector to the cornice strip; placing a second cornice strip in position superimposed over a remaining second portion of the connector; and pressing the second cornice strip against the connector so that adhesive oozes through the openings in the connector and attaches the connector to the second cornice strip.
- the apertures perform the important function of permitting the cement to be displaced from the rear to front surface and then to adhere the strips to the connector as a result of the pressure applied to the strips when they are mounted on the wall. This means that a plasterer does not have to use their hands to do it.
- the method may include the additional step of wiping excess adhesive, eg cornice cement, from the cornice strips after pressing the second cornice strip over the second portion.
- the method may also include filling in any gaps between the ends of the adjacent cornice strips with adhesive or cornice cement.
- the connector may include any one or more of the preferred features of the connector described above with respect to the first aspect of the invention. Further the front major surface of the connector may be concave and the rear surface of the cornice strips may be a complementary convex configuration. For example the first and second portions of the connector may extend at right angles to each other.
- FIG. 1 is a schematic 3-dimensional view showing the prior art method of attachment of a cornice assembly to a wall and ceiling;
- Fig. 2 is a sectional front view of a prior art cornice assembly showing adjacent cornice strips to respectively the wall and ceiling;
- Fig. 3 is a 3-dimensional view of a prior art cornice assembly showing adjacent cornice strips detached from each other leaving an unsightly crack;
- Figs. 4a and b are front and rear three dimensional views of a connector for an external mitre and Fig 4c is a cornice assembly having an external mitre;
- Fig. 5 is a 3-dimensional view of a connector for an internal mitre mounted on a wall
- Figs. 6a and b are front and rear 3-dimensional views of a cornice assembly incorporating the connector shown in Fig. 5 having an internal miter ( some detail of the wall is omitted for clarity from Fig 6 b); and
- Fig. 7a is a front view of a cornice assembly having a butt attachment of adjacent cornice strips and Fig 7 b is sectional view of the cornice assembly of Fig 7a;
- Figs 8 to 10 show the sequence of steps undertaken to mount a cornice assembly including a connector on a wall.
- Figs. 1 to 3 show a prior art cornice assembly. These drawings have been described in some detail in the preamble to the specification and will not be described in further detail here. The reference numerals used in these drawings correspond to those used to indicate the various components in Figs 4 to 10 unless otherwise indicated.
- Fig. 4 illustrates a cornice assembly indicated generally by reference I in which adjacent cornice strips form an external mitre.
- the cornice assembly 1 comprises adjacent cornice strips 2, 3, and a connector indicated generally by reference 4.
- the connector 4 extends across the point of connection of the strips 2, 3.
- the cornice strips are well known in the art. Specifically the strips 2, 3 have a concave outer surface 7 and a complementary convex inner surface 8.
- the cornice strips illustrated in the drawings are fairly simple. It will be appreciated however that other cornice strips with more complex and intricate aesthetic features may also be used.
- the connector 4 comprises broadly an element 9 having a first portion 10 and a second portion 11 extending orthogonally to the first portion 10.
- the front surfaces 13 of the first and second portions 10, 11 are complementary to those of the cornice 2, 3 so as to enable the connector 4 to fit snugly against the cornice strips 2, 3.
- the front face 13 of the first and second portions 10, 11 of the connector 4 is concave to complement the convex rear surface of the cornice strips 2, 3.
- the rear major surface 14 is typically convex although this is not essential.
- the connector has an array of apertures 12 extending through the element 9 from the front major surface 13 to the rear major surface 14.
- Each of the apertures 12 is sufficiently large to permit cornice adhesive to be squeezed there through without excessive resistance.
- the element 9 is made out of a plastics type material.
- the element may conveniently be formed as a unitary article by an injection moulding process using a polyethylene plastics material.
- the cornice assembly is mounted to the wall in a series of steps as illustrated in Figs 8 to 10.
- a first cornice strip 2 is placed in position along a first wall surface 20 and overlaying the first portion 10 of the connector 4. The strip 2 is then firmly pressed against the element 9 causing cement to ooze through the openings 12 in the element 9 and attach the strip 8 to the element 9. Again the cement has sufficient adhesion to hold the strip 8 in place even before it has set.
- This process is then repeated for the second cornice strip 3 on a second wall surface 21. The cement is then allowed to set to provide a firm secure attachment of adjacent cornice strips 2, 3. Naturally any excess adhesive can be wiped off the cornice strips.
- the connectors 4 are installed as part of the cornice assembly when the house is built. Alternatively they may be retrofitted.
- Fig. 5 illustrates a cornice assembly in which the adjacent cornice strips form an internal mitre.
- This connector is used on internal corners such as occur in the four corners of a room as distinct from the external corners on which the external mitre is used.
- Fig. 6 illustrates a cornice assembly including the connector of Fig. 5.
- Fig. 7 illustrates a cornice assembly for the linear attachment of the strips to each other. This is known as a butt attachment.
- this embodiment is similar to the Fig. 4 and Fig. 5 embodiments and the same reference numerals will be used to refer to the same components.
- the principal characteristic of this embodiment is that the adjacent cornice strips and the connector element are linearly extending. They do not have the perpendicular bend of the Fig.4 and Fig.5 mitres.
- a key feature of this invention is that the connector when fitted is concealed from view and thus does not interfere with the standard look of the normal cornice assembly. It is not a capricious addition mounted in front of the cornice strip. Rather the connector is tucked unobtrusively out of view.
- the advantage is that it is not necessary for a customer to embrace the look of the connector when deciding to use it and as a result one design can be used for all applications and uses.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001263650A AU2001263650B2 (en) | 2000-06-06 | 2001-06-05 | Connector for cornices |
NZ523056A NZ523056A (en) | 2000-06-06 | 2001-06-05 | Connector for cornices |
AU6365001A AU6365001A (en) | 2000-06-06 | 2001-06-05 | Connector for cornices |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPQ7971 | 2000-06-06 | ||
AUPQ7971A AUPQ797100A0 (en) | 2000-06-06 | 2000-06-06 | Connector for cornices |
AUPR2093A AUPR209300A0 (en) | 2000-12-14 | 2000-12-14 | Connector for cornices |
AUPR2093 | 2000-12-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001094722A1 true WO2001094722A1 (en) | 2001-12-13 |
Family
ID=25646348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU2001/000666 WO2001094722A1 (en) | 2000-06-06 | 2001-06-05 | Connector for cornices |
Country Status (2)
Country | Link |
---|---|
NZ (1) | NZ523056A (en) |
WO (1) | WO2001094722A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004028401A1 (en) * | 2004-06-14 | 2005-12-29 | Doris Dinkel | Decorative self-adhesive ceiling cove strips, for use in the corners between walls and ceilings, are of an elastomer material to give elasticity for ease of laying and positioning |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU8897982A (en) * | 1981-10-02 | 1983-04-14 | John David Atkins | Joining cornice |
AU4929885A (en) * | 1984-11-01 | 1986-05-08 | Hawkins, L.D. | Cornice joining device |
US4835925A (en) * | 1987-08-24 | 1989-06-06 | Pro Patch Systems, Inc. | Flexible corner bead strip |
US5660492A (en) * | 1993-12-18 | 1997-08-26 | Bathon; Leander | Coupling for wood structural members |
DE19742558A1 (en) * | 1997-09-26 | 1999-04-01 | Roland Schmid Baukunststoffe G | Sealing strip for joints which are subject to movement |
-
2001
- 2001-06-05 NZ NZ523056A patent/NZ523056A/en unknown
- 2001-06-05 WO PCT/AU2001/000666 patent/WO2001094722A1/en active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU8897982A (en) * | 1981-10-02 | 1983-04-14 | John David Atkins | Joining cornice |
AU4929885A (en) * | 1984-11-01 | 1986-05-08 | Hawkins, L.D. | Cornice joining device |
US4835925A (en) * | 1987-08-24 | 1989-06-06 | Pro Patch Systems, Inc. | Flexible corner bead strip |
US5660492A (en) * | 1993-12-18 | 1997-08-26 | Bathon; Leander | Coupling for wood structural members |
DE19742558A1 (en) * | 1997-09-26 | 1999-04-01 | Roland Schmid Baukunststoffe G | Sealing strip for joints which are subject to movement |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004028401A1 (en) * | 2004-06-14 | 2005-12-29 | Doris Dinkel | Decorative self-adhesive ceiling cove strips, for use in the corners between walls and ceilings, are of an elastomer material to give elasticity for ease of laying and positioning |
Also Published As
Publication number | Publication date |
---|---|
NZ523056A (en) | 2004-05-28 |
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