EP0484080A1 - Improvements in and relating to concrete formwork - Google Patents
Improvements in and relating to concrete formwork Download PDFInfo
- Publication number
- EP0484080A1 EP0484080A1 EP91309935A EP91309935A EP0484080A1 EP 0484080 A1 EP0484080 A1 EP 0484080A1 EP 91309935 A EP91309935 A EP 91309935A EP 91309935 A EP91309935 A EP 91309935A EP 0484080 A1 EP0484080 A1 EP 0484080A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- soldiers
- concrete formwork
- soldier
- bracket
- tie
- 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
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/14—Bracing or strutting arrangements for formwalls; Devices for aligning forms
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/062—Forms for curved walls
- E04G11/065—Forms for curved walls with mechanical means to modify the curvature
Definitions
- This invention relates to concrete formwork. It is particularly concerned with formwork of the type employed to produce walls, especially formwork for producing curved walls.
- One type of concrete formwork is known from British Patent 2133826. This describes formwork for producing curved walls comprising a deformable panel and a plurality of U-shaped members secured to the panel by their legs and arranged in at least two columns.
- a soldier i.e., a structural member comprising two, spaced connected beams with aligned holes therein, spans across two or more support members in the same column and is connected thereto by a way of the faces of the members.
- the outer faces of two adjacent soldiers are connected by an adjustable tie whereby the distance between the soldiers may be altered to vary the curvature of the panel. Any desired height can be accommodated simply by altering the number of U-shaped members in each column and employing different lengths of soldier.
- the soldiers provide rigidity. In use, two panels, each supported by a plurality of U-shaped members and soldiers, are positioned a distance apart and concrete is cast between them to form a wall.
- ties are employed which extend between, and beyond the outer sides of, the panels. These ties serve to hold the panels together. Generally they are threaded and, once inserted through the panels, correspondingly threaded nuts are attached to their ends. The nuts are screwed down to pull the panels together and enable them to resist the forces generated by the concrete to be poured therebetween.
- the bases of the U-shaped members are formed with holes so that the ties can pass through the members and then between the webs of the soldier.
- the nuts, employed with the ties are bolted down against the outer pair of flanges of the soldier. The soldiers serve to evenly distribute loads generated by the pressure of the concrete acting on the panels which is passed through the ties and the-U-shaped members.
- Concrete formwork in accordance with the invention comprises one or more panels, at least two soldiers for supporting the panel(s) and means for connecting the soldiers to the panel(s) characterised in that the soldiers have bracket means attached thereto whereby at least one beam is mounted therebetween and in that the or each beam is connectible to the end of a tie.
- ties can be provided at locations other than at the soldiers, that is, a greater number of possible tie positions are available.
- Known ties are, in fact, capable of supporting greater loads than those to which they are subjected in known formwork.
- one tie can be used to support a number of soldiers. Therefore the number of ties which has to be employed is less.
- the resultant reduction in making good which has to be done to a concrete section is significant.
- one tie is employed per alternate adjacent pair of soldiers.
- the beam is formed with a plurality of holes. This allows ties to be placed in a variety of locations along the length of the formwork.
- the bracket means comprise, for each beam, a bracket member which includes an angled portion against the apex of which, in use, the beam abuts.
- the bracket member may be arranged so that the apex of the angled portion lies between the webs of the soldier to which the bracket member is connected, preferably in the median plane of the soldier. Load transferal to the soldier is therefore along its centre line.
- the bracket member may further comprise a circular rod spaced from the apex of the angled member, the beam in use passing between the circular rod and the angled member.
- the distance between the rod and the angled member is made approximately equal to the appropriate beam dimension.
- the bracket member may be secured to a soldier by pinning it thereto through a hole provided therein and one of the holes of the soldier.
- the panels may be deformable and the soldiers may additionally be connected by adjustable length link means.
- the formwork is then suitable for use in the construction of curved walls.
- Figure 1 shows a section of concrete formwork 2 comprising a panel 4, U-shaped members 6, soldiers 8 and a tie 10.
- the panel 4 forms part of a panelling wall which is connected to a plurality of the U-shaped members 6.
- the U-shaped members 6 basically comprise two inclined legs 12 joined together by a base flange 14.
- the members 6 are secured to the panelling wall through holes in end flanges 16.
- the plurality of U-shaped members 6 are arranged in a series of columns spaced around the panelling wall.
- One soldier 8 spans over the U-shaped members 6 in a column to act as a continuity member therefor.
- the members 6 include support posts (not shown) carried on the base flange 14 thereof. These support posts extend between the webs of the soldiers 8 and are connected thereto. The ends of the support posts extend beyond the soldiers 8 and are arranged to be connected to a turn buckle. Turn buckles are provided between each pair of soldiers and, by employing these to vary the distance between the soldiers, the curvature of the panelling wall can also be varied.
- the complete concrete formwork includes a second panelling wall, supported by U-shaped members and soldiers, which is spaced from the first so the concrete can cast therebetween.
- ties are employed which extend between the panelling walls, the ties being held in place by securing their ends which lie on the outer sides of the panelling walls.
- the ties serve to pull the two sections of the formwork together against the pressure exerted by the concrete to be cast therebetween. Once casting is complete, at least a portion of the ties are removed from the cast concrete with the result that this is left with holes which have to be made good.
- the ties have been attached by way of the panel supports in whatever form these were provided.
- the ties pass through holes in the base flanges 14 of the U-shaped members 6 between the webs of the soldiers 8 and their ends are closed by nuts which are tightened up against the flanges of the soldiers 8.
- At least one tie per column of U-shaped members 6 has to be provided and often two or three per column are necessary.
- a bracket 18 is attached to each soldier.
- the bracket 18 comprises a support post 20 dimensioned to fit between the webs of the soldier 8 and formed with a hole 22.
- the brackets 18 are connected to the soldiers 8 by passing a pin, see 24, through holes in the soldier 8 and the holes 22 in the support post 20 of the bracket 18.
- the support post 20 carries a baseplate 26 from which two trapezoidal shaped wings 28 extend, the long edge of the wings 28 being connected to the baseplate 26. At their free ends the wings 28 are connected by a circular rod 30.
- An angle member 32 is mounted to the baseplate 26 between the other ends of the wings 28.
- a bracket 18 is mounted to each soldier 8 by pinning it thereto. With the brackets 18 in place, a beam 34 can be attached between two of the soldiers 8 by passing it through the apertures of the brackets 18 defined by the wings 28, rods 30 and angled member 32. The distance between the rods 30 and the angle member 32 of the brackets 18 can be so arranged that, no matter at what angle the soldiers 8 are to each other, the beam 34 will be held by the brackets 18 between the apices 36 of the angle members 32 and the rods 30.
- the beams 34 which are preferably hollow sections, include holes therein through which a tie 10 can be passed.
- the beams 34 have a plurality of such holes so that the ties 10 can be provided wherever desired.
- a tie 10 is held in position relative to a beam by attaching a washer 38 and a nut 40 to its free ends.
- the beams 34 provide additional tie locations.
- a tie 10 is capable of supporting more than one soldier 8 and, by providing the beams 34, a tie 10 can be positioned so that it will do this.
- a tie 10 is provided between each alternate adjacent pair of beams 34. Therefore the amount of holes in the concrete cast between the first and second panels of the formwork is halved, with a consequent 50% reduction in the necessary "making good".
- the angled member 32 of the brackets 18 is positioned so that, when a bracket 18 is connected to a soldier 8, its apex 36 lies on the centre line of the soldier which passes between the webs thereof. Loading on the beam 34 will therefore be transmitted, by the contact thereof with the apices 36 of the brackets 18, through the middle of the soldiers 8. This maximises the strengthening effect of the beams 34.
Abstract
Description
- This invention relates to concrete formwork. It is particularly concerned with formwork of the type employed to produce walls, especially formwork for producing curved walls.
- One type of concrete formwork is known from British Patent 2133826. This describes formwork for producing curved walls comprising a deformable panel and a plurality of U-shaped members secured to the panel by their legs and arranged in at least two columns. A soldier, i.e., a structural member comprising two, spaced connected beams with aligned holes therein, spans across two or more support members in the same column and is connected thereto by a way of the faces of the members. The outer faces of two adjacent soldiers are connected by an adjustable tie whereby the distance between the soldiers may be altered to vary the curvature of the panel. Any desired height can be accommodated simply by altering the number of U-shaped members in each column and employing different lengths of soldier. The soldiers provide rigidity. In use, two panels, each supported by a plurality of U-shaped members and soldiers, are positioned a distance apart and concrete is cast between them to form a wall.
- In both this known arrangement and in other concrete formwork arrangements, ties are employed which extend between, and beyond the outer sides of, the panels. These ties serve to hold the panels together. Generally they are threaded and, once inserted through the panels, correspondingly threaded nuts are attached to their ends. The nuts are screwed down to pull the panels together and enable them to resist the forces generated by the concrete to be poured therebetween. In the formwork arrangement specifically described above, the bases of the U-shaped members are formed with holes so that the ties can pass through the members and then between the webs of the soldier. The nuts, employed with the ties, are bolted down against the outer pair of flanges of the soldier. The soldiers serve to evenly distribute loads generated by the pressure of the concrete acting on the panels which is passed through the ties and the-U-shaped members.
- To ensure that the formwork will resist the pressures generated by the concrete to be cast therein, a large number of ties have to be employed. In general, two or three per soldier are employed and there must be a minimum of at least one per soldier. This has the disadvantage that the cast concrete has a correspondingly large number of holes therein which have to be made good.
- Concrete formwork in accordance with the invention comprises one or more panels, at least two soldiers for supporting the panel(s) and means for connecting the soldiers to the panel(s) characterised in that the soldiers have bracket means attached thereto whereby at least one beam is mounted therebetween and in that the or each beam is connectible to the end of a tie.
- The advantage of this is that ties can be provided at locations other than at the soldiers, that is, a greater number of possible tie positions are available. Known ties are, in fact, capable of supporting greater loads than those to which they are subjected in known formwork. By enabling them to be positioned between the soldiers, one tie can be used to support a number of soldiers. Therefore the number of ties which has to be employed is less. The resultant reduction in making good which has to be done to a concrete section is significant. In a particularly preferred arrangement, one tie is employed per alternate adjacent pair of soldiers.
- Preferably, the beam is formed with a plurality of holes. This allows ties to be placed in a variety of locations along the length of the formwork.
- Suitably the bracket means comprise, for each beam, a bracket member which includes an angled portion against the apex of which, in use, the beam abuts. The bracket member may be arranged so that the apex of the angled portion lies between the webs of the soldier to which the bracket member is connected, preferably in the median plane of the soldier. Load transferal to the soldier is therefore along its centre line.
- The bracket member may further comprise a circular rod spaced from the apex of the angled member, the beam in use passing between the circular rod and the angled member. The distance between the rod and the angled member is made approximately equal to the appropriate beam dimension. The advantage of providing a circular rod is that no matter at what angle the beam is to the bracket, it will always be held between a portion of the rod and the apex of the angled member.
- The bracket member may be secured to a soldier by pinning it thereto through a hole provided therein and one of the holes of the soldier.
- The panels may be deformable and the soldiers may additionally be connected by adjustable length link means. The formwork is then suitable for use in the construction of curved walls.
- The invention will now be further described by way of example with reference to the accompanying drawings in which:-
- Figure 1 is a plan view of concrete formwork in accordance with the invention; and
- Figure 2 is an isometric view of a bracket which forms part of the concrete formwork of Figure 1.
- Figure 1 shows a section of
concrete formwork 2 comprising a panel 4, U-shapedmembers 6,soldiers 8 and atie 10. - The panel 4 forms part of a panelling wall which is connected to a plurality of the U-shaped
members 6. The U-shapedmembers 6 basically comprise twoinclined legs 12 joined together by abase flange 14. Themembers 6 are secured to the panelling wall through holes inend flanges 16. The plurality of U-shapedmembers 6 are arranged in a series of columns spaced around the panelling wall. Onesoldier 8 spans over the U-shapedmembers 6 in a column to act as a continuity member therefor. Themembers 6 include support posts (not shown) carried on thebase flange 14 thereof. These support posts extend between the webs of thesoldiers 8 and are connected thereto. The ends of the support posts extend beyond thesoldiers 8 and are arranged to be connected to a turn buckle. Turn buckles are provided between each pair of soldiers and, by employing these to vary the distance between the soldiers, the curvature of the panelling wall can also be varied. - The complete concrete formwork includes a second panelling wall, supported by U-shaped members and soldiers, which is spaced from the first so the concrete can cast therebetween.
- The concrete formwork arrangement briefly outlined above, which is of the type employed to produce curved walls, is described and shown in much greater detail in British Patent 2133826 (the subject matter of which is hereby incorporated).
- In all concrete formwork, whether for curved or straight walls, ties are employed which extend between the panelling walls, the ties being held in place by securing their ends which lie on the outer sides of the panelling walls. The ties serve to pull the two sections of the formwork together against the pressure exerted by the concrete to be cast therebetween. Once casting is complete, at least a portion of the ties are removed from the cast concrete with the result that this is left with holes which have to be made good.
- Hitherto the ties have been attached by way of the panel supports in whatever form these were provided. In the arrangement described in British Patent 2133826, the ties pass through holes in the
base flanges 14 of the U-shapedmembers 6 between the webs of thesoldiers 8 and their ends are closed by nuts which are tightened up against the flanges of thesoldiers 8. At least one tie per column of U-shapedmembers 6 has to be provided and often two or three per column are necessary. - In the
concrete formwork 2 shown in Figure 1, abracket 18 is attached to each soldier. Thebracket 18 comprises asupport post 20 dimensioned to fit between the webs of thesoldier 8 and formed with ahole 22. Thebrackets 18 are connected to thesoldiers 8 by passing a pin, see 24, through holes in thesoldier 8 and theholes 22 in thesupport post 20 of thebracket 18. Thesupport post 20 carries abaseplate 26 from which two trapezoidalshaped wings 28 extend, the long edge of thewings 28 being connected to thebaseplate 26. At their free ends thewings 28 are connected by acircular rod 30. Anangle member 32 is mounted to thebaseplate 26 between the other ends of thewings 28. - As noted above, a
bracket 18 is mounted to eachsoldier 8 by pinning it thereto. With thebrackets 18 in place, abeam 34 can be attached between two of thesoldiers 8 by passing it through the apertures of thebrackets 18 defined by thewings 28,rods 30 andangled member 32. The distance between therods 30 and theangle member 32 of thebrackets 18 can be so arranged that, no matter at what angle thesoldiers 8 are to each other, thebeam 34 will be held by thebrackets 18 between theapices 36 of theangle members 32 and therods 30. - The
beams 34, which are preferably hollow sections, include holes therein through which atie 10 can be passed. Preferably thebeams 34 have a plurality of such holes so that theties 10 can be provided wherever desired. Atie 10 is held in position relative to a beam by attaching awasher 38 and anut 40 to its free ends. - The
beams 34 provide additional tie locations. Atie 10 is capable of supporting more than onesoldier 8 and, by providing thebeams 34, atie 10 can be positioned so that it will do this. Preferably, as shown, atie 10 is provided between each alternate adjacent pair ofbeams 34. Therefore the amount of holes in the concrete cast between the first and second panels of the formwork is halved, with a consequent 50% reduction in the necessary "making good". - The
angled member 32 of thebrackets 18 is positioned so that, when abracket 18 is connected to asoldier 8, its apex 36 lies on the centre line of the soldier which passes between the webs thereof. Loading on thebeam 34 will therefore be transmitted, by the contact thereof with theapices 36 of thebrackets 18, through the middle of thesoldiers 8. This maximises the strengthening effect of thebeams 34.
Claims (8)
- Concrete formwork comprising one or more panels, at least two soldiers for supporting the panel(s) and means for connecting the soldiers to the panel(s) characterised in that the soldiers have bracket means attached thereto whereby at least one beam is mounted therebetween and in that the or each beam is connectible to the end of a tie.
- Concrete formwork as claimed in Claim 1 wherein there is a plurality of soldiers, each of which has bracket means attached thereto, at least one beam being mounted thereby between each alternate adjacent pair of soldiers.
- Concrete formwork as claimed in either Claim 1 or 2 wherein the or each beam has a plurality of holes therein for receiving one end of a tie.
- Concrete formwork as claimed in any preceding Claim wherein the bracket means comprises a bracket member for each beam mounted to a soldier, each bracket member including an angled member on the apex of which the beam abuts.
- Concrete formwork as claimed in Claim 4 wherein each bracket member is arranged so that the apex of the angled member thereof lies in the median plane of the soldier to which it is attached.
- Concrete formwork as claimed in either Claim 4 or Claim 5 wherein each bracket member defines an aperture, the apex of the angled member constituting a first wall of the aperture.
- Concrete formwork as claimed in Claim 6 wherein each bracket member includes a circular rod which constitutes a second aperture wall located opposite the first aperture wall.
- Concrete formwork as claimed in any one of Claims 4 to 7 wherein each bracket member includes a mount dimensioned to fit between the webs of the soldier to which the bracket member is attached and having a hole therein whereby it may be pinned to the soldier.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB909023699A GB9023699D0 (en) | 1990-10-31 | 1990-10-31 | Improvements in and relating to concrete formwork |
GB9023699 | 1990-10-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0484080A1 true EP0484080A1 (en) | 1992-05-06 |
EP0484080B1 EP0484080B1 (en) | 1995-07-19 |
Family
ID=10684663
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19910309935 Expired - Lifetime EP0484080B1 (en) | 1990-10-31 | 1991-10-28 | Improvements in and relating to concrete formwork |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0484080B1 (en) |
DE (1) | DE69111373T2 (en) |
ES (1) | ES2076480T3 (en) |
GB (1) | GB9023699D0 (en) |
IE (1) | IE71213B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0514712A1 (en) * | 1991-05-18 | 1992-11-25 | PASCHAL-WERK G. MAIER GmbH | Formwork for surfaces with varying curvature |
ES2124105A1 (en) * | 1994-02-17 | 1999-01-16 | Perez Antonio Navarro | Curvilinear shuttering (formwork) system |
CN104863360A (en) * | 2015-06-08 | 2015-08-26 | 中冶建工集团有限公司 | Curved surface template supporting system and method for installing curved surface template by adopting same |
CN113374256A (en) * | 2021-06-23 | 2021-09-10 | 中国十七冶集团有限公司 | Arc-shaped wall formwork reinforcing device and using method |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112962958A (en) * | 2021-01-23 | 2021-06-15 | 陕西创宜建筑科技有限公司 | Arc template for hanging mold in toilet |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2613747A1 (en) * | 1987-04-10 | 1988-10-14 | Ricard Coffrages | Crosspiece with movable and orientable bearing points for forming shuttering panels, and shuttering panels made by means of this crosspiece |
-
1990
- 1990-10-31 GB GB909023699A patent/GB9023699D0/en active Pending
-
1991
- 1991-10-28 DE DE1991611373 patent/DE69111373T2/en not_active Expired - Fee Related
- 1991-10-28 EP EP19910309935 patent/EP0484080B1/en not_active Expired - Lifetime
- 1991-10-28 ES ES91309935T patent/ES2076480T3/en not_active Expired - Lifetime
- 1991-10-30 IE IE378891A patent/IE71213B1/en not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2613747A1 (en) * | 1987-04-10 | 1988-10-14 | Ricard Coffrages | Crosspiece with movable and orientable bearing points for forming shuttering panels, and shuttering panels made by means of this crosspiece |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0514712A1 (en) * | 1991-05-18 | 1992-11-25 | PASCHAL-WERK G. MAIER GmbH | Formwork for surfaces with varying curvature |
WO1992020887A1 (en) * | 1991-05-18 | 1992-11-26 | Paschal-Werk G. Maier Gmbh | Formwork usable to produce surfaces of different curvature |
AU653234B2 (en) * | 1991-05-18 | 1994-09-22 | Paschal-Werk G. Maier Gmbh | Formwork usable to produce surfaces of different curvature |
TR27945A (en) * | 1991-05-18 | 1995-10-31 | Maier G Paschal Werk | Casting mold for twisted surfaces in different shapes. |
US5492303A (en) * | 1991-05-18 | 1996-02-20 | Paschal-Werk G. Maier Gmbh | Formwork for surfaces varying in curvature |
ES2124105A1 (en) * | 1994-02-17 | 1999-01-16 | Perez Antonio Navarro | Curvilinear shuttering (formwork) system |
CN104863360A (en) * | 2015-06-08 | 2015-08-26 | 中冶建工集团有限公司 | Curved surface template supporting system and method for installing curved surface template by adopting same |
CN113374256A (en) * | 2021-06-23 | 2021-09-10 | 中国十七冶集团有限公司 | Arc-shaped wall formwork reinforcing device and using method |
CN113374256B (en) * | 2021-06-23 | 2022-05-13 | 中国十七冶集团有限公司 | Arc-shaped wall formwork reinforcing device and using method |
Also Published As
Publication number | Publication date |
---|---|
IE913788A1 (en) | 1992-05-22 |
DE69111373T2 (en) | 1996-03-07 |
DE69111373D1 (en) | 1995-08-24 |
EP0484080B1 (en) | 1995-07-19 |
ES2076480T3 (en) | 1995-11-01 |
IE71213B1 (en) | 1997-02-12 |
GB9023699D0 (en) | 1990-12-12 |
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