EP1483460B1 - Systeme de treillis monte sur colonne - Google Patents

Systeme de treillis monte sur colonne Download PDF

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Publication number
EP1483460B1
EP1483460B1 EP03702232A EP03702232A EP1483460B1 EP 1483460 B1 EP1483460 B1 EP 1483460B1 EP 03702232 A EP03702232 A EP 03702232A EP 03702232 A EP03702232 A EP 03702232A EP 1483460 B1 EP1483460 B1 EP 1483460B1
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EP
European Patent Office
Prior art keywords
section
securing
structural
beams
chord
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
Application number
EP03702232A
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German (de)
English (en)
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EP1483460A1 (fr
Inventor
Allan James Becker
Zygmunt Dziwak
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.)
Aluma Enterprises Inc
Original Assignee
Aluma Enterprises Inc
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
Priority claimed from CA002372358A external-priority patent/CA2372358C/fr
Application filed by Aluma Enterprises Inc filed Critical Aluma Enterprises Inc
Publication of EP1483460A1 publication Critical patent/EP1483460A1/fr
Application granted granted Critical
Publication of EP1483460B1 publication Critical patent/EP1483460B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • the present application relates to truss systems used in the construction industry, and in particular, relates to a column hung truss system for forming of concrete floors.
  • Flying form trusses are used to form concrete floors in multi-story structures. Some flying form truss systems transmit the poured concrete load directly to the floor slabs below and in fast construction cycles, the concrete floor below may not be fully cured. For this reason, reshoring of the lower concrete floor may be necessary to transmit the loads to a slab which is fully cured. Reshoring takes additional time and also limits the access to some lower levels which are effectively cured.
  • Flying form systems typically use two large I-beams which run parallel to the building support columns with the I-beams being supported by shoring jacks secured to the columns.
  • the shoring jacks are adjustable in height and typically have a roller associated therewith to allow lowering of the I-beams and sliding of the truss out of the formed bay.
  • These I-beams have a series of transverse beams secured to and extending perpendicular to the I-beams.
  • a series of runner beams which typically support a plywood deck are secured and extend perpendicular to the transverse beams.
  • An I-sectioned light metal girder is disclosed in GB 2 036 150 A.
  • the transverse beams are of a length which is primarily determined by the width of the bays used in the building.
  • the bay width is the distance between the columns.
  • the bay width of different buildings varies substantially and thus different lengths of transverse beams are required.
  • composite transverse beams formed using L-shaped sections, see e.g. DE 1 434 335 B, or U-shaped channel sections placed in back to back relationship and secured in an overlapping adjustable manner.
  • mechanical fasteners are used to secure the channels to form the appropriate length of transverse beams.
  • the overall weight of the flying truss be reduced to ease the movement thereof and to accommodate the crane capacity used for the building construction.
  • the present invention provides improvements to the transverse beams and improvements to truss systems used in concrete forming.
  • An extruded elongate metal component according to the present invention comprises in cross section, a hollow section having a top securing section, first and second opposed side securing sections and a bottom securing section.
  • the top securing section includes a recessed bolt slot extending the length of the structural component.
  • the side sections have complimentary shapes with the first side securing section including a recess extending the length of the structural component, the second side securing section includes a projecting section sized for snug receipt in the recess of first side section.
  • the bottom securing section includes at least one downwardly projecting securing flange extending the length of the structural component.
  • the extruded elongate structural component is an extruded aluminum alloy component.
  • the hollow section of the structural component is of a generally rectangular cross section.
  • each side section has a series of holes extending therethrough and aligned with the holes through the other side section.
  • the at least one downwardly projecting securing flange is two downwardly projecting securing flanges disposed in parallel relationship either side of the center line of the bottom section.
  • the securing flanges include a series of securing holes passing therethrough and spaced in the length of the structural component.
  • the recess in the first side section is a shallow U-shaped section which dominates the first side section and the projecting section of the side section includes opposed upper and lower shoulders for engaging sides of the shallow U-shaped section.
  • An assembled structural beam comprises a top chord and a bottom chord which are mechanically connected by a series of diagonal connecting members.
  • the top chord includes on an upper surface, a longitudinally extending bolt slot.
  • the bottom chord includes on a bottom surface, a longitudinally extending bolt slot.
  • Each of the top chord and the bottom chord have two opposed side surfaces with a shallow channel recess in one side extending the length of the chord, and a complementary projection on the opposite side extending the length of the chord and sized for receipt in the shallow channel recess.
  • Each of the top chord and the bottom chord are extruded components and include a securing flange which cooperates with the diagonal connecting members to secure the top chord to the bottom chord.
  • vertical connecting members are included.
  • top chord and the bottom chord of the assembled structural beam are of the same cross section.
  • chords and the diagonal connecting members are extruded aluminum alloy components.
  • the diagonal connecting members are secured to the chords using mechanical fasteners.
  • the present invention is also directed to a header beam which is adjustable in length.
  • the header beam comprises two beam sections secured one to the other in an overlapping manner.
  • Each beam section is an assembled structure having a cop chord, a bottom chord and a series of connecting members secured thereto between.
  • the top chord and the bottom chord of the beams include interfitting surfaces which maintain longitudinal alignment of the beam sections relative to each other.
  • the beam sections further include a series of holes in the top chord and bottom chords and a plurality of structural fasteners passing through aligned holes in the chords which in combination with the interfitting surfaces, mechanically secure the beam sections.
  • An adjustable in length header beam according to an aspect of the invention, as each of the beam sections being of the same cross section.
  • top chord and the bottom chord are of the same cross section.
  • chords are formed by extrusion.
  • the header beam is stackable with like header beams with the interfitting surfaces engaging to partially maintain the stack of beams.
  • FIG. 1 schematically shows a bay of a building having the flying truss mounted to the columns in preparation for pouring of a concrete floor.
  • the flying truss 2 has two main beams 4 which extend between columns 12 of the building and are supported by the columns by column mounted jacks 9 mechanically secured to the columns.
  • the bay 11 of the building is generally the space between the columns 12.
  • the main beams 4 have connected to them, a series of transverse beams 6 which are of a composite structure. These transverse beams are generally perpendicular to the main beams 4.
  • a series of runner beams 8 are attached to the upper surface of the transverse beams 6 and support the plywood deck 14.
  • the flying truss may be lowered on the column jacks 9 and moved out of the bay in preparation for locating between the columns for pouring of the next floor or an adjacent bay.
  • Figure 2 shows the various elements of the flying truss 2 supported within the bay 11 of the building.
  • FIG 3 shows various details of the column mounted jack 9, the main beams 4 and the transverse beams 6.
  • the transverse beams 6 are of a composite design and are of a depth which extends below the main beams 4. The increased depth provides greater stiffness and allows further separation of the transverse beams.
  • the distance between the aluminum alloy runner beams 8 is 16 to 19 inches depending upon the plywood and the thickness of concrete to be poured.
  • the runner beams 8 are preferably of an I-beam section with a center channel for receiving a nailer strip.
  • the plywood deck 14 may be secured by screws or nails to the nailer strip located in the runner beams.
  • Figure 7 shows details of the composite transverse beam 6.
  • the composite transverse beam is made of two beams resp. beam sections 44 and 46 which are mechanically secured by a series of bolt and nut combinations 48, at the overlapping ends of the two beams. Both the bottom chord and the top chord are mechanically secured using a series of holes in the chord members as generally shown in Figure 9.
  • This beam section 44 includes a top chord 20, a bottom chord 22 and a series of diagonal bracing members 24 and a series of vertical members 26. Members 24 and 26 are mechanically secured to the top and bottom chords. Each of the chords is of the same structure and has a series of connecting ports resp. holes extending in the length of the chords. These holes pass directly through the chords and are used to mechanically fasten two sections, one to the other.
  • a top chord 20 is shown in Figure 6, and has a generally rectangular shaped enclosure resp. hollow section 30, having a top portion resp. section 32 ; opposed side portions resp. sections 34 and 36, and a bottom portion resp. section 38.
  • the top portion 32 includes a longitudinally extending bolt slot 50 used to mechanically fasten the runner beams 8 to the transverse beams 6.
  • the side portion 34 includes an outwardly extending elongate rail resp. projecting section 52 which is sized for receipt in the U-shaped receiving channel resp. recess 54 in the opposite side 36.
  • the bottom portion 38 includes downwardly projecting securing flanges 40 and 42 centered either side of the center line of the chord and uses to mechanically secure the diagonal and vertical connecting members 24 and 26. As shown in Figure 5, the securing flanges 40 and 42 have a series of holes 43 at various points in the length of the chord and is used to fasten the connecting members by means of mechanical fasteners resp. bolts 45.
  • the flanges 40 and 42 are positioned inwardly of the sides 34 and 36 with the entire mechanical connection of the connecting members 24 and 26 located in a non interference position when two sections are secured, one to the other, as shown in Figures 7, 8 and 9.
  • the side portions of the enclosure 30 are designed to mate and form a mechanical connection opposing racking of the sections when a load is carried by the transverse beam 6.
  • the projecting rail 52 of one beam section 44 is received in the adjacent, receiving channel 54 of the other chord member.
  • Mechanical fasteners resp. bolts 48 pass through the holes and mechanically secure one beam section to the other beam section to form the transverse beam 6.
  • the length of the transverse beam 6 may be varied by releasing of the mechanical fasteners 48 and moving the sections one to the other until the desired length is achieved. In this way, the transverse beams 6 can be adjusted in length to accommodate different bay widths. This composite structure also allows for salvaging of components if certain portions of the transverse beam are damaged.
  • top and bottom chords are of the identical section and merely reversed in orientation. If damage occurs to either the top chord or the bottom chord, a new chord member can be inserted. It can further be appreciated that damage may have occur to only part of the chord and a portion of the chord may be salvaged for another application.
  • FIG 11 and Figure 12 shows details of the bracket 100 used to secure the transverse beams-6 to the main beams 4.
  • the bracket 100 is mechanically secured to the web 3 of the main beam by a nut and bolt connection which passes through the web and passes through holes in the bracket.
  • the transverse beams are mechanically secured to the brackets using the series of holes in the top chord and appropriate holes provided in the bracket 100.
  • a further brace can extend from the bracket to the bottom chord to increase the stability.
  • the bottom chord members of the parallel spaced transverse beams 6 can be tied one to the other using the bolt slot provided in the bottom chord member to provide bracing. This increases the stiffness and stability of the system.
  • the transverse beams 6 are secured to the main beams 4 at a position below the top of the main beams 4.
  • the transverse beams 6 are designed to support the extruded aluminum runner beams 8 which have an overall height of approximately six and one half inches.
  • the upper surface of each runner beam 8 is three and one half inches above the top of the main beams 4.
  • a series of wooden four-by-fours 110 can be positioned on the main beams 4 and across the main beams 4 to surround the column 12 and provide a support surface for the plywood deck 14 adjacent the column.
  • the packing around the columns for supporting the concrete floor adjacent the column is relatively simple and straightforward. This aspect is clearly shown in Figure 14.
  • the transverse beams 6 are of a design such that the beam sections cooperate with one another along the top and bottom chords to oppose racking of the sections when the beams are loaded.
  • the beam sections are mechanically secured one to the other and allow for ready adjustment in length of the transverse beams.
  • the bay width is essentially constant and therefore, the truss can be used for forming of the bay floor and then repositioned for forming of the floor thereabove.
  • the bay sizes will be somewhat standardized and there will be no requirement to vary the length of the transverse beams.
  • the bay width may be somewhat unusual and thus, the transverse beams can be adjusted in length, to allow formation of the truss of appropriate width.
  • a U-shaped saddle member 120 includes a column engaging plate 122 having two outwardly extending arms 124 and 126.
  • the column engaging plate 122 is mechanically secured to the column using any of the series of holes 128. These holes allow for aligned or offset bolts.
  • the adjustable jack 130 is received between the arms 124 and 126 and has an overlapping top slide plate 132.
  • the jack has a securing flange 134 which cooperates with releasable pins 136 to locate the jack at one of three positions shown in Figure 15. Each position is shown by one of the pair of vertically aligned locking pin ports 138.
  • the jack assembly includes a screw member 140 which can be adjusted by means of the bolt adjustment 142 for raising and lowering of the support plate 144.
  • the support plate 144 engages the lower flange of one of the main beams 4.
  • the jack is adjusted to drop the main beams onto the support rollers 146 and thereafter, the truss may be moved out of the bay and raised to the next level.
  • the column hung jack assembly of Figure 15 allows for minor variation in the spacing of the columns and allows for effective transfer of the loads through the jack to the columns 12.
  • the composite structural beams 44 and 46 be made of an extruded aluminum alloy components or similar lightweight high strength component.
  • the top chord and the bottom chord are of the identical structure and the diagonal connecting members and the vertical members are tube members with relatively thick sidewalls which have the holes for connecting of the member to the chords and thinner end walls.
  • the transverse beams 6 can be spaced along the main beams 4 anywhere from 64 inches to 108 inches apart. The actual separation of the transverse beams 6 will be determined by the thickness and weight of the slab being poured.
  • the flying form truss due to the large size thereof, is assembled onsite and is dismantled once the building is complete.
  • the individual components are transported to and from the site and between jobs are stored in a construction yard.
  • the transverse composite beams can be stacked sideways, one on top of the other, and interfit to maintain the stack. This stacking is particularly convenient with the individual beam sections.
  • the projecting, elongate rail 52 is received in a U-shaped receiving channel of an adjacent beam section. This stabilizes the stack and is helpful in transportation and storage.

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  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Rod-Shaped Construction Members (AREA)

Claims (19)

  1. Composant structurel métallique allongé extrudé comprenant en section transversale une section creuse (30) ayant une section de fixation supérieure (32), des première et deuxième sections de fixation latérales opposées (34, 36) et une section de fixation inférieure (38) ; ladite section de fixation supérieure (32) comprenant une fente de boulon (50) en retrait s'étendant dans la longueur dudit composant structurel ; ladite section de fixation inférieure (38) comprenant au moins une bride de fixation (40, 42) faisant saillie vers le bas à l'usage s'étendant dans la longueur dudit composant structurel, caractérisé en ce que lesdites sections latérales (34, 36) présentent des formes complémentaires, ladite première section de fixation latérale (36) comprenant un creux (54) s'étendant dans la longueur dudit composant structurel et ladite deuxième section de fixation latérale (34) comprenant une section en saillie (52) dimensionnée pour une réception parfaite dans ledit creux (54) de ladite première section latérale (36).
  2. Composant structurel allongé extrudé selon la revendication 1, dans lequel ledit composant est un composant d'alliage d'aluminium extrudé.
  3. Composant structurel allongé extrudé selon la revendication 1 , dans lequel ladite section creuse (30) est d'une section transversale globalement rectangulaire.
  4. Composant structurel allongé extrudé selon la revendication 3, dans lequel chaque section latérale (34, 36) comprend une série de trous s'étendant à travers elle et alignés avec les trous à travers l'autre section latérale (34, 36),
  5. Composant structurel allongé extrudé selon la revendication 3 dans lequel ladite au moins une bride de fixation faisant saillie vers le bas (40, 42) se présente sous la forme de deux brides de fixation faisant saillie vers le bas (40, 42) disposées en relation parallèle de l'un et l'autre côté d'une ligne centrale de ladite section inférieure (38).
  6. Composant structurel allongé extrudé selon la revendication 5. dans lequel lesdites brides de fixation (40, 42) comprennent une série de trous de fixation (43) passant à travers lesdites brides (40, 42) et espacées dans la longueur dudit composant structurel.
  7. Composant structurel allongé extrudé selon la revendication 5. clans lequel ledit creux (54) de ladite première section latérale (36) est de section en forme de U peu profond qui domine ladite première section latérale (36) et ladite section en saillie (52) de ladite section latérale (34) comprend des épaulements supérieur et inférieur opposés pour coopérer avec des côtés de ladite section en forme de U peu profond.
  8. Composant structurel allongé extrudé selon la revendication 1. dans lequel ladite section creuse (30) comprend une série de ports de raccordement à travers les sections de fixation latérales (34, 36) avec les ports espacés le long de la longueur du composant structurel.
  9. Composant structurel allongé extrudé selon la revendication 8. dans lequel lesdits ports sont alignés en paires et chaque paire forme un passage à travers ladite section creuse (30) perpendiculaire aux dites sections de fixation latérales (34, 36).
  10. Poutre structurelle assemblée (44, 46) comprenant une membrure supérieure (20) et une membrure inférieure (22) raccordées mécaniquement par une série d'éléments de raccordement diagonaux (24), ou chacune de ladite membrure supérieure (20) et de ladite membrure inférieure (22) est d'une structure selon la revendication 1.
  11. Poutre structurelle assemblée selon la revendication 10, dans laquelle ladite membrure supérieure (20) et ladite membrure inférieure (22) présentent la même section transversale.
  12. Poutre structurelle assemblée selon la revendication 11, dans laquelle chacune de ladite membrure supérieure (20) et de ladite membrure inférieure (22) comprend deux brides de fixation parallèles (40, 42), les extrémités desdits éléments de raccordement diagonaux (24) étant recues entre lesdites brides de fixation parallèles (40, 42).
  13. Poutre structurelle assemblée selon la revendication 12, dans laquelle lesdites membrures (20, 22) et lesdits éléments de raccordement diagonaux (24) sont des composants en alliage d'aluminium extrudé.
  14. Poutre structurelle assemblée selon la revendication 13, dans laquelle lesdits éléments de raccordement diagonaux (24) sont fixés aux dites membrures (20, 22) à l'aide d'organes de fixation mécaniques (45).
  15. Poutre de chevêtre ajustable en longueur (6) comprenant deux poutres structurelles (44, 46) où chaque poutre structurelle (44, 46) est d'une structure selon la revendication 10, lesdites poutres structurelles (44, 46) étant fixées l'une à l'autre d'une manière chevauchante ; lesdits creux (54) et sections en saillie (42) desdites membrures supérieures (20) et desdites membrures inférieures (22) desdites poutres structurelles (44, 46) s'ajustant entre eux pour maintenir l'alignement desdites poutres structurelles les unes par rapport aux autres, lesdites poutres structurelles (44, 46) comprenant en outre une série de trous dans lesdites membrures supérieure et inférieure (20, 22) à travers lesquels une pluralité de fixations structurelles (48) passent et fixent lesdites poutres structurelles (44, 46) les unes aux autres.
  16. Poutre de chevêtre ajustable en longueur (6) selon la revendication 15, dans laquelle lesdites poutres structurelles (44, 46) présentent la même section transversale.
  17. Poutre de chevêtre ajustable en longueur (6) selon la, revendication 16, dans laquelle ladite membrure supérieure (20) et ladite membrure inférieure (22) présentent la même section transversale.
  18. Poutre de chevêtre ajustable en longueur (6) selon la revendication 17, dans laquelle lesdites membrures (20, 22) sont formées par extrusion.
  19. Poutre de chevêtre ajustable en longueur (6) selon la revendication 18, dans laquelle ladite poutre de chevêtre (6) peut être empilée avec des poutres de chevêtre similaires (6), lesdites surfaces à ajustement mutuel coopérant pour maintenir partiellement la pile de poutres (6).
EP03702232A 2002-02-20 2003-02-14 Systeme de treillis monte sur colonne Expired - Lifetime EP1483460B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CA2372358 2002-02-20
CA002372358A CA2372358C (fr) 2002-02-20 2002-02-20 Systeme de fermes suspendues sur colonnes
PCT/CA2003/000207 WO2003071046A1 (fr) 2002-02-20 2003-02-14 Systeme de treillis monte sur colonne

Publications (2)

Publication Number Publication Date
EP1483460A1 EP1483460A1 (fr) 2004-12-08
EP1483460B1 true EP1483460B1 (fr) 2006-09-20

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Application Number Title Priority Date Filing Date
EP03702232A Expired - Lifetime EP1483460B1 (fr) 2002-02-20 2003-02-14 Systeme de treillis monte sur colonne

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EP (1) EP1483460B1 (fr)
CN (1) CN100374668C (fr)
DE (1) DE60308488D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102061807B (zh) * 2010-11-29 2012-01-04 中冶建工有限公司 一种大跨度h型钢桁架梁的组装方法
US10975585B2 (en) 2018-10-15 2021-04-13 Peri Formwork Systems, Inc. Connection assembly for formwork
CN111058621B (zh) * 2019-12-26 2024-06-04 江苏恒桂创科建筑工程科技有限公司 一种楼面模板免支撑早拆体系

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR988705A (fr) * 1948-05-20 1951-08-30 échafaudage ou coffrage formé de poutrelles emboîtées utilisable dans le bâtiment
DE840435C (de) * 1948-10-02 1952-06-09 Carl Fels Hohler Stahltraeger, insbesondere fuer Schalungszwecke
DE1434335B1 (de) * 1953-08-26 1971-04-29 Fleischmann Willi Aus Traegerelementen loesbar zusammengesetzter Traeger
DE2850545A1 (de) * 1978-11-22 1980-06-04 Layher I-foermiges traegerprofil aus leichtmetall
DE8901194U1 (de) * 1989-02-03 1989-03-16 BWM Dübel + Montagetechnik GmbH, 7022 Leinfelden-Echterdingen Befestigungsvorrichtung für Wand- oder Decken-Verkleidungsplatten
CN2330729Y (zh) * 1998-07-08 1999-07-28 河南省第四建筑工程公司 附着式起重装置用天梁
CN2409232Y (zh) * 2000-01-28 2000-12-06 三卓工程顾问有限公司 组合式桁架
CN2436546Y (zh) * 2000-07-25 2001-06-27 江苏省淮阴市公路管理处 一种带橡胶支座的装配式公路钢桥

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EP1483460A1 (fr) 2004-12-08
CN1636099A (zh) 2005-07-06
CN100374668C (zh) 2008-03-12
DE60308488D1 (de) 2006-11-02

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