EP0392880B1 - A fixing system for a channel member - Google Patents
A fixing system for a channel member Download PDFInfo
- Publication number
- EP0392880B1 EP0392880B1 EP90304427A EP90304427A EP0392880B1 EP 0392880 B1 EP0392880 B1 EP 0392880B1 EP 90304427 A EP90304427 A EP 90304427A EP 90304427 A EP90304427 A EP 90304427A EP 0392880 B1 EP0392880 B1 EP 0392880B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bracket
- channel member
- shuttering
- assembly according
- channel
- 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.)
- Expired - Lifetime
Links
- 238000009416 shuttering Methods 0.000 claims abstract description 20
- 238000000465 moulding Methods 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4107—Longitudinal elements having an open profile, with the opening parallel to the concrete or masonry surface, i.e. anchoring rails
Definitions
- This invention relates to a channel member assembly.
- Channel members are used in the building industry as anchorages embedded in concrete, so that on setting of the concrete the channel can receive the head of a tee-headed bolt, to the screw-threaded shank of which is then secured items of machinery, brackets or other fittings.
- the channel member In order to embed the channel member in the concrete it is necessary to mask the channel against the ingress of the fluid concrete, and to secure the channel member to shuttering defining the desired form of the concrete. At present, the channel is provided with holes in its base, and through these the member is nailed to the shuttering.
- a securing method does not provide full rigidity of the channel member on the shuttering, and after the concrete has cured and the shuttering removed the nails remain extending into the channel and have to be broken, or bent along the base of the channel, to provide access for the tee-headed bolt.
- a channel member assembly wich comprises a moulding which is inserted into a channel member and which may be removed after concrete has hardened around the channel member and moulding.
- the moulding forms a groove in the concrete which enables a square headed bolt to be inserted into the channel member via the groove.
- the moulding disclosed in DE-B-2,916,005 is not rigidly connected to the channel member as it must be removed later to allow insertion of the bolt.
- a channel member assembly comprising a channel member which comprises two substantially parallel side walls joined by a base portion, the free end of each side wall having a flange, the flanges defining an opening between them; and characterised in that the flanges are inturned to be directed substantially parallel to said side wall of the channel member, and in that the assembly further comprises a bracket comprising securing means to allow the securement of the assembly to shuttering, and projection means engaged with the channel member between each side wall and respective flange to connect the bracket rigidly to the channel member.
- the bracket is generally in the form of a plate and said projection means extend from a face of the plate.
- the bracket does not protrude into the opening for the channel defined by the flanges.
- the bracket is engageable with an end portion of the channel member thereby to provide a closure for said end portion during pouring of the concrete.
- the bracket is in the form of a plate which provides the closure.
- the means for allowing securement to the shuttering is provided by a through hole in the bracket for passage of a nail which will secure the bracket and the channel member to the shuttering.
- the through hole is directed so as to be normal to the base of the channel in use.
- a bracket 1 is generally rectangular in front view (Fig. 1) and is formed from 4 mm thick polypropylene.
- a side wall 2 extends from three sides of the bracket 1, its inner corners 4 being radiussed to correspond to the radius of the base of a channel member on which it is to fit.
- An apertured boss 6 is integrally formed along a portion of the side wall 2, and a through bore 8 within the boss 6 extends parallel to the side portion of the side wall 2.
- the through bore 8 has four projections 9 which each have a tapered end 11, which is recessed within the bore 8 adjacent the top end 7 of the boss 6.
- the four projections 9 extend from the tapered ends 11, along the inside of the bore 8 to a base 13 of the boss 6.
- the bracket 1 has a generally rectangular gap 10 defined by its rear and side walls, and a tang 12 projects from the side wall 2 into the gap 10.
- the lower edge of the gap 10 as defined by the rear wall has a further resilient lip 14 extending inwardly of the bracket 1.
- a pair of projections 16 of rectangular cross-section project from a lower part of the rear wall of the bracket inwardly of the bracket 1.
- the bracket 1 is installed on a channel member 18 as shown in Fig. 5, with a leg 20 of the channel member being threaded through the gap 10 until the bracket fits tightly around an open end face of the channel member and is held thereon by engagement of the bracket on the outer surface of the channel member's wall.
- the bracket is then held in position by engagement of the tang 12 and the lip 14 with the leg 20, while the projections 16 engage within respective grooves formed along the channel member by virtue of its side walls being bent inwardly and upwardly to provide a retaining face for the tee-headed bolt.
- the brackets When thus installed, the brackets close off the ends of the channel member to concrete poured into the shuttered volume, and the open channel itself is closed by abutment against the shuttering; the interior of the channel is thus effectively sealed against ingress of concrete, and when the concrete has set the shuttering can be removed by forcing it free of the nails through which it is held to the channel member.
- the nails are positioned at the ends of the channel member and do not interfere with the function of the channel in receiving a tee-headed bolt slidable along the channel.
- the position of the apertured boss 6 on a side of the bracket ensures that the channel member is secured to the shuttering at diagonally opposed end locations, thus providing full stability for the fixture.
- This embodiment of the invention not only avoids the need for deflecting or breaking nails inserted through the base of the channel, but also ensures that the nails are supported within the apertures 8 over a longer distance than with such prior art arrangements, thus providing greater resistance to bending and greater rigidity for the channel member on the shuttering. It also provides for the nails to be supplied already inserted in the aperture 8 and held therein by friction with the aperture wall, thus reducing frustration caused by lack or loss of nails during fitting.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
- Seal Device For Vehicle (AREA)
- Supports For Pipes And Cables (AREA)
- Clamps And Clips (AREA)
- Supporting Of Heads In Record-Carrier Devices (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
- Connection Of Plates (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
Description
- This invention relates to a channel member assembly.
- Channel members are used in the building industry as anchorages embedded in concrete, so that on setting of the concrete the channel can receive the head of a tee-headed bolt, to the screw-threaded shank of which is then secured items of machinery, brackets or other fittings.
- In order to embed the channel member in the concrete it is necessary to mask the channel against the ingress of the fluid concrete, and to secure the channel member to shuttering defining the desired form of the concrete. At present, the channel is provided with holes in its base, and through these the member is nailed to the shuttering. However, such a securing method does not provide full rigidity of the channel member on the shuttering, and after the concrete has cured and the shuttering removed the nails remain extending into the channel and have to be broken, or bent along the base of the channel, to provide access for the tee-headed bolt.
- DE-B-2,916,005, upon which claim 1 is based, discloses a channel member assembly wich comprises a moulding which is inserted into a channel member and which may be removed after concrete has hardened around the channel member and moulding. The moulding forms a groove in the concrete which enables a square headed bolt to be inserted into the channel member via the groove.
- Hence, the moulding disclosed in DE-B-2,916,005 is not rigidly connected to the channel member as it must be removed later to allow insertion of the bolt.
- According to the present invention there is provided a channel member assembly comprising a channel member which comprises two substantially parallel side walls joined by a base portion, the free end of each side wall having a flange, the flanges defining an opening between them; and characterised in that the flanges are inturned to be directed substantially parallel to said side wall of the channel member, and in that the assembly further comprises a bracket comprising securing means to allow the securement of the assembly to shuttering, and projection means engaged with the channel member between each side wall and respective flange to connect the bracket rigidly to the channel member.
- Typically, the bracket is generally in the form of a plate and said projection means extend from a face of the plate.
- Preferably, the bracket does not protrude into the opening for the channel defined by the flanges.
- Preferably the bracket is engageable with an end portion of the channel member thereby to provide a closure for said end portion during pouring of the concrete.
- Typically, the bracket is in the form of a plate which provides the closure.
- Typically, the means for allowing securement to the shuttering is provided by a through hole in the bracket for passage of a nail which will secure the bracket and the channel member to the shuttering. Most preferably, the through hole is directed so as to be normal to the base of the channel in use.
- Embodiments of the present invention will now be described by way of example with reference to the accompanying drawings, in which:
- Fig. 1 is a front view of a bracket for use in a fixing system of this invention;
- Fig. 2 is a side sectional view on A-A of Fig. 1;
- Fig. 3 is a top view of the bracket of Fig. 1;
- Fig. 4 is an underneath view of the bracket of Fig. 1; and
- Fig. 5 is a side sectional view of the bracket of Fig. 1 in use.
- Referring to the drawings, a bracket 1 is generally rectangular in front view (Fig. 1) and is formed from 4 mm thick polypropylene. A
side wall 2 extends from three sides of the bracket 1, its inner corners 4 being radiussed to correspond to the radius of the base of a channel member on which it is to fit. An apertured boss 6 is integrally formed along a portion of theside wall 2, and a throughbore 8 within the boss 6 extends parallel to the side portion of theside wall 2. - The
through bore 8 has fourprojections 9 which each have a tapered end 11, which is recessed within thebore 8 adjacent the top end 7 of the boss 6. The fourprojections 9 extend from the tapered ends 11, along the inside of thebore 8 to abase 13 of the boss 6. - The bracket 1 has a generally
rectangular gap 10 defined by its rear and side walls, and atang 12 projects from theside wall 2 into thegap 10. The lower edge of thegap 10 as defined by the rear wall has a furtherresilient lip 14 extending inwardly of the bracket 1. - A pair of
projections 16 of rectangular cross-section project from a lower part of the rear wall of the bracket inwardly of the bracket 1. - In use, the bracket 1 is installed on a
channel member 18 as shown in Fig. 5, with aleg 20 of the channel member being threaded through thegap 10 until the bracket fits tightly around an open end face of the channel member and is held thereon by engagement of the bracket on the outer surface of the channel member's wall. The bracket is then held in position by engagement of thetang 12 and thelip 14 with theleg 20, while theprojections 16 engage within respective grooves formed along the channel member by virtue of its side walls being bent inwardly and upwardly to provide a retaining face for the tee-headed bolt. - An identical bracket is installed on the opposite open end of the
channel member 18 and the channel member is then installed on shuttering 22 by drivingnails 24 through thebore 8 of each bracket into the shuttering. Theprojections 9 within thebore 8 resiliently grip thenail 24 so that each bracket 1 is firmly mounted on theshuttering 22. - When thus installed, the brackets close off the ends of the channel member to concrete poured into the shuttered volume, and the open channel itself is closed by abutment against the shuttering; the interior of the channel is thus effectively sealed against ingress of concrete, and when the concrete has set the shuttering can be removed by forcing it free of the nails through which it is held to the channel member. By virtue of the brackets, the nails are positioned at the ends of the channel member and do not interfere with the function of the channel in receiving a tee-headed bolt slidable along the channel. Further, the position of the apertured boss 6 on a side of the bracket ensures that the channel member is secured to the shuttering at diagonally opposed end locations, thus providing full stability for the fixture.
- This embodiment of the invention not only avoids the need for deflecting or breaking nails inserted through the base of the channel, but also ensures that the nails are supported within the
apertures 8 over a longer distance than with such prior art arrangements, thus providing greater resistance to bending and greater rigidity for the channel member on the shuttering. It also provides for the nails to be supplied already inserted in theaperture 8 and held therein by friction with the aperture wall, thus reducing frustration caused by lack or loss of nails during fitting. - Modifications and improvements may be incorporated without departing from the scope of the invention as defined in the appended claims.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT90304427T ATE74644T1 (en) | 1989-04-26 | 1990-04-25 | FIXING SYSTEM FOR OPEN PROFILES. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB898909583A GB8909583D0 (en) | 1989-04-26 | 1989-04-26 | Fixing system for a channel member |
GB8909583 | 1989-04-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0392880A1 EP0392880A1 (en) | 1990-10-17 |
EP0392880B1 true EP0392880B1 (en) | 1992-04-08 |
Family
ID=10655773
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90304427A Expired - Lifetime EP0392880B1 (en) | 1989-04-26 | 1990-04-25 | A fixing system for a channel member |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0392880B1 (en) |
AT (1) | ATE74644T1 (en) |
DE (1) | DE69000055D1 (en) |
GB (1) | GB8909583D0 (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3319985A (en) * | 1963-11-18 | 1967-05-16 | Fry Reglet Corp | Reglet |
DE2916005C2 (en) * | 1979-04-20 | 1981-05-27 | Frimeda Metall- Und Drahtwarenfabrik Siegfried Fricker, 7135 Wiernsheim | Fitting for the creation of recesses on the surface of concrete components during their manufacture |
-
1989
- 1989-04-26 GB GB898909583A patent/GB8909583D0/en active Pending
-
1990
- 1990-04-25 AT AT90304427T patent/ATE74644T1/en not_active IP Right Cessation
- 1990-04-25 DE DE9090304427T patent/DE69000055D1/en not_active Expired - Fee Related
- 1990-04-25 EP EP90304427A patent/EP0392880B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
GB8909583D0 (en) | 1989-06-14 |
ATE74644T1 (en) | 1992-04-15 |
EP0392880A1 (en) | 1990-10-17 |
DE69000055D1 (en) | 1992-05-14 |
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