EP2894255A1 - Système universel réglable de clip de joint de dilatation - guide pour poutre lisseuse et procédé d´installation d´un tel système - Google Patents

Système universel réglable de clip de joint de dilatation - guide pour poutre lisseuse et procédé d´installation d´un tel système Download PDF

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Publication number
EP2894255A1
EP2894255A1 EP14195223.4A EP14195223A EP2894255A1 EP 2894255 A1 EP2894255 A1 EP 2894255A1 EP 14195223 A EP14195223 A EP 14195223A EP 2894255 A1 EP2894255 A1 EP 2894255A1
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EP
European Patent Office
Prior art keywords
base
screed guide
control joint
clip
screed
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
EP14195223.4A
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German (de)
English (en)
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EP2894255B1 (fr
Inventor
William Reed
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Omniplast
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Reed William
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Filing date
Publication date
Priority claimed from US13/998,730 external-priority patent/US8925259B2/en
Application filed by Reed William filed Critical Reed William
Publication of EP2894255A1 publication Critical patent/EP2894255A1/fr
Application granted granted Critical
Publication of EP2894255B1 publication Critical patent/EP2894255B1/fr
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00—Details of pavings
    • E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
    • E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
    • E01C11/10—Packing of plastic or elastic materials, e.g. wood, resin
    • E01C11/106—Joints with only prefabricated packing; Packings therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
    • E04F15/14—Construction of joints, e.g. dividing strips
    • E04F15/142—Dividing strips or boundary strips
    • E04F15/145—Dividing strips or boundary strips adjustable in height

Definitions

  • the present invention relates to an adjustable, universal screed guide/control joint clip used in the positioning of screed guide/control joints, which in turn are utilized in the placement of concrete in concrete slabs, the screed guides provide precise placement of the concrete in concrete slabs, the adjustable, universal screed guide clip allowing for exact adjustment of the height of the screed guide, as well as allowing the installation of the screed guide in applications heretofore denied.
  • the pouring and use of concrete is a fundamental construction task in the trade. It is referred to as the placement of concrete. It is often required in the installation of sidewalks. It is placed over steel decks to provide the flooring base for multi-story skyscrapers; it is placed for the flooring of large warehouse or industrial structures; and it is placed to form the basis for water retention basins and reservoirs. It further provides the basis for highway surfaces and airport runways.
  • the first joint is commonly referred to as the expansion joint and passes completely through the concrete slab.
  • the expansion joint is designed to allow for the expansion and contraction of the concrete slab in response to ambient temperature conditions.
  • the second joint is commonly referred to as the control joint.
  • the control joint is a linear impression formed in the concrete slab after its placement. It does not extend through the concrete slab.
  • the purpose of the control joint is to control the direction of any cracking which may appear in the slab over time. Typical control joints would run transversely on the slab from one edge to the other. Control joints would normally be formed by dragging a trowel across the poured concrete while it was still wet to form the linear impression, and in some instances, diamond saws would be used to form the control joints after the concrete slab had hardened.
  • any handy material would be utilized to form the peripheral outline or frame of the concrete slab and any associated expansion joints.
  • the concrete would be placed within the frame and leveled using a screed which would be dragged across the surface of the wet concrete while resting on at least two adjacent or abutting framing members in order to achieve a planar level slab.
  • the framing members upon which the screed rested while leveling the surface of the concrete slab are referred to in the trade as screed guides.
  • the method of installing screed guide/control joints evolved to the use of rebar stakes, and clips.
  • the section of rebar would be pounded into the ground to an estimated height, each rebar being positioned approximately two feet apart.
  • Clips would then be installed on the top of the rebar, the upper portion of such clips presenting a dove tail channel into which a preformed plastic screed guide/control joints having a pyramidal cross section would snap fit.
  • the worker would hand adjust the depth of the rebar in order that the clips were at the same height so that the screed guide/control joint presented a level upper edge for placement of the concrete slab.
  • This method presents problems when a vapor barrier is utilized, since the rebar stakes will pierce the plastic sheets or other types of vapor barriers and degrade their performance. It also presents a problem when concrete flooring is being placed on a steel deck as is done in the construction of multi-story buildings or skyscrapers. The rebar stake cannot be driven into or through the steel deck.
  • Some installations call for void forms to be placed beneath the concrete slab at various locations to compensate for the expansion and contraction of the ground due to expansion and contracting soil conditions.
  • These voided areas are formed utilizing cardboard housings which are positioned prior to the placement of the concrete slab, the slab being placed essentially over the cardboard encapsulating the cardboard housing between the concrete and the ground.
  • the void area under the cardboard housing and in contact with the ground provides compensation for expansion and contraction of the ground.
  • the cardboard housing over time will eventually deteriorate, but the void will remain.
  • the use of the rebar stakes or any stake on such a slab would pierce the cardboard housing and obviate its desired purpose of forming a void between the poured concrete and the ground.
  • An object of the present invention is to provide a novel screed guide/control joint clip system to accelerate and facilitate the accurate placement of the screed guides and limit the use of different sizes of clips.
  • a further object of the present invention is to provide for a novel screed guide/control joint clip system which allows for the facile and exact adjustment of the height of the screed guide/control joint clip and the screed guide/control joint.
  • a still further object of the present invention is to provide for a novel screed guide/control joint clip system which permits the use of the system on substrates which heretofore would not accept the system.
  • a still further object of the present invention is to provide for a novel screed guide/control joint clip system which incorporates a base member securable to a substrate of the type which did not previously permit the usage of a screed guide/control joint.
  • An adjustable, universal screed guide/control joint clip for positioning screed guide/control joints utilized in the placement of concrete in concrete slabs the adjustable universal screed guide clip allowing for the exact adjustment of the height of the screed guide attached thereto for the placement of the concrete slabs, the adjustable universal screed guide clip allowing the installation of the screed guide in applications heretofore not allowable, the adjustable, universal screed guide/control joint clip capable of accommodating both large and small profile screed guides.
  • FIG. 1 is a perspective view of a screed guide/control joint utilized in the present invention.
  • the screed guide/control joint 10 is linear in shape generally coming in 12 to 16 foot lengths to be cut in the field to the desired length required. It is formed of extruded polymer and has a base portion 12 comprised of a bottom wall 14, two opposing side walls 16 and 18, angled upper walls 20 and 22 terminating in an upwardly extending tower portion 24, triangular in cross section formed by two angled side walls 26 and 28 and terminating in an apex which forms the upper edge 30 of screed guide/control joint 10.
  • the interior 32 of the base and tower portions are formed during the extrusion process with cross member ribs 34 for support. Additionally, the angled side walls 26 and 28 of tower portion 24 may also be formed with longitudinal parallel ribs 36 to aid in the setting process when screed guide/control joint 10 is encapsulated in concrete.
  • the bottom wall 14 of the base member is not planar, but rather, slightly flared downwardly at its side walls 16 and 18 to aid in its snap fitting with a screed guide/control joint clip as described hereafter.
  • FIG. 1 illustrates the general shape of the screed guide/control joint used with the present invention, however, minor variations, particularly with the longitudinal ribs on the exterior of the tower, may vary from manufacturer to manufacturer.
  • screed guide/control joints generally are formed in two sizes, large profile and small profile.
  • the small profile screed guide/control joints are used with concrete slabs up to six inches in depth, and the large profile screed guide/control joints are used for slabs in excess of six inches in depth.
  • the large profile and small profile screed guide/control joints are similar in all aspects except their dimensions.
  • a typical large profile screed guide/control joint would have a base portion with slightly over two inches and a tower portion height of approximately three to three and a half inches, whereas the small profile screed guide/control joint dimensions would be approximately half those of the large profile screed guide.
  • FIG. 2 is a perspective view of screed guide/control joint 10 of FIG. 1 illustrating its setting with respect to a prior art method of installation.
  • small mounds of concrete 50 are poured in a linear orientation approximately two feet apart so that the base portion 12 of the screed guide/control joint may be set on these concrete mounds and the mounds allowed to harden and secure the screed guide/control joint.
  • the concrete slab would be placed, encapsulating the entire length of the screed guide/control joint to the height of its upper edge 30.
  • a plurality of screed guide/control joints would be set in this manner, the desired distance apart in accordance with code, in order to define the area of concrete to be placed.
  • This method of setting the screed guide/control joint is very time consuming, laborious, and requires exacting measurements to ensure that upper edge 30 is at a consistent height along the length of the screed guide/control joint and on all similarly situated screed guide/control joints.
  • the desire is to obtain a concrete slab of some dimension which has a uniform planar upper surface.
  • the initial concrete mounds 50 that are placed must be of the desired height and the screed guide/control joint must be set at the accurate height, as well as all parallel and abutting screed guide/control joints to insure that the upper edge 30 of all of the screed guide/control joints utilized to define the concrete slab are at the same height. This can best be described as a hit or miss method of obtaining a uniform planar concrete slab.
  • FIG. 3 is an exploded perspective view of the screed guide/control joint of FIG. 1 and an alternative method for installation developed in the prior art.
  • a plurality of lengths of rebar 60 are driven into the underlying substrate 62 to a desired height 64.
  • the rebar is installed in a linear orientation approximately two feet apart.
  • a screed guide/control joint clip 66 is then frictionally positioned on the upper extended end 68 of the rebar 60.
  • the screed guide/control joint clip 66 comprises a tubular base 70 which slidably engages the upper end 68 of the rebar 60.
  • Unitarily formed to the upper end of tubular base 70 is a dove tail channel 72.
  • Dove tail channel 72 is dimensioned to the width of the base portion 12 of screed guide/control joint 10.
  • the installer would adjust the height of the sections of rebar 60 by hand to insure that the screed guide/control joint clips 66 were all at the same height.
  • the screed guide/control joint would then be snap fit into the dove tail channel 72 of the screed guide/control joint clip, thus securing the screed guide/control joint at a desired height above the substrate 62.
  • the installer would take measurements to insure that the upper edge 30 of all screed guide/control joints 10 utilized and placed in order to place the concrete slab were all at the same height.
  • the concrete would then be placed encapsulating the rebar 60, the screed guide/control joint clip 66 and the screed guide/control joint 10 to the height of its upper edge 30. Sections of the concrete slab would be placed in succession between each screed guide/control joint so positioned.
  • Applicant's screed guide/control joint clip provides several advantages over the prior art. First, it can accommodate both large profile and small profile screed guide/control joints in one clip assembly. Secondly, its construction allows for a firm grip on both European rebar which measures approximate 12 mm in diameter, and US rebar, which is slightly larger at 12.57 mm. Thirdly, the interior member which is exteriorly threaded easily allows for the accurate height adjustment of the screed guide/control joint clip to insure that the upper edges of all screed guide/control joints are level when installed on the screed guide/control joint clip.
  • a base support member cooperable with the rebar allows for the use of screed guide/control joints where vapor barriers and liners are initially installed over the substrate, allows for the use of Applicant's screed guide/control joint clip in conjunction with screed guide/control joints on steel substrate for multi-story skyscrapers, and allows for the use of screed guide/control joints on void forms. All of these areas were previously denied the use of screed guide/control joints because of the required installation methods previously discussed.
  • FIG. 4 is a top view of the screed guide/control joint clip of the present invention
  • FIG. 5 is an end view of the screed guide/control joint clip of the present invention
  • FIG. 6 is an opposing end view of the screed guide/control joint clip.
  • the screed guide/control joint clip 80 cooperates with a threaded cap rebar engaging member 82 illustrated in FIG. 7 , which will be more fully discussed hereafter.
  • Screed guide/control joint clip 80 comprises a tubular member 84 having an internal bore 86, internal bore 86 having a single threaded member 88 cooperable with threaded cap rebar engaging member 82 as more fully discussed with respect to FIG. 8 hereafter.
  • first dove tail channel member 88 Unitarily formed with tubular member 84 is a first dove tail channel member 88 having a base portion 90 and two opposing upstanding side walls or prongs 92 and 94, upstanding side walls or prongs 92 and 94 being slightly inwardly protruding at their upper terminus 96 and 98 to define a channel 100 for engagement with the base member 12 of a large profile screed guide/control joint 10 snap fit there between.
  • a second inverted dove tail channel member 102 is unitarily hingeably secured 106 to an open edge 104 of first dove tail channel member 88.
  • Second, inverted dove tail channel member 102 in the configuration illustrated in FIGS. 4, 5, and 6 has a base member 108, and depending outer side walls or prongs 110 and 112.
  • Second inverted dove tail channel member 102 also has the two inner side walls or prongs 114 and 116 spaced apart from outer side walls or prongs 110 and 112 depending downwardly and terminating with a nubbed apex similar to the side walls of first dove tail channel member 88.
  • the distance between the downwardly depending inner side walls or prongs 114 and 116 corresponds to the width of the base of a small profile screed guide/control joint.
  • FIG. 9 which is an end view of the screed guide/control joint clip of FIGS. 4, 5, and 6 with the second dove tail channel member 102 in hinged relationship with the first dove tail channel member 88.
  • the flexible hinge 106 allows for second dove tail channel member 102 to be rotated 180 degrees such that its outer side walls or prongs 110 and 112 frictionally lock in a snap fit manner with the side walls or prongs 92 and 94 of first dove tail channel member 88.
  • first and second dove tail channel members 88 and 102 are not planar, but are slightly arcuate to accommodate the contour of the base member 12 of either a large profile or small profile screed guide/control joint. Additionally, the base members 90 and 108 of first and second dove tail channel members 88 and 102 may also be formed with apertures 120 and 122 to aid in the molding process.
  • FIG. 7 is a perspective view of threaded cap rebar engaging member 82.
  • FIGS. 10A and 10B are bottom views of two embodiments of threaded cap rebar engaging member 82.
  • Threaded cap rebar engaging member 82 is tubular having an exterior threaded surface 130 and an interior surface 132 having a plurality of radial or non-radial ribs 134 protruding inwardly from inner surface 132.
  • the ribs 134 being non-radial in orientation with respect to tubular threaded cap rebar engaging member 82 allows for threaded cap rebar engaging member 82 to be utilized with respect to both European and United States rebar dimensions, thus allowing for threaded cap rebar engaging member to be snap-fittingly engaged over an end of either type of rebar. Radial ribs may also be used but sized accordingly for the size of rebar utilized.
  • FIG. 8 is a cross sectional view of the screed guide/control joint clip and threaded cap rebar engaging member along Plane 8-8 of FIG. 4 .
  • Screed guide/control joint clip 80 has a single internal thread 88 cooperable with the external threading 130 on threaded cap rebar engaging member 82 to allow for the height adjustment of the screed guide/control joint clip 80 once the threaded cap rebar engaging member 82 has been snap fit over an end of rebar. This allows screed guide/control joint clip 80 to be accurately rotated on threaded cap rebar engaging member 82 to achieve the desired height.
  • the screed guide/control joint clip system described thus far eliminates the need for concrete mounds to be poured and measurements to be taken with respect to the placement of screed guides on such concrete mounds. It also eliminates the eyeball measurements and adjustment of the depth of rebar in the substrate in order to achieve equality in screed guide levels.
  • the addition of a base member to a system previously described also allows for the use of the system in those instances where a liner or vapor barrier is required over the substrate or where the substrate is steel, and also where conditions require that void forms be provided in the concrete slab for the underlying expansion and contraction of the substrate.
  • FIG. 11 is a top view of a base support member 140 designed to be utilized with the screed guide/control joint system
  • FIG. 12 is a side view of the base member with the screed guide/control joint clip system installed on a steel substrate.
  • the base member 140 comprises a planar base 142 of any particular geometric shape, but illustrated as being circular in FIGS. 11 and 12 .
  • Centrally positioned on planar base 142 and unitary therewith is upstanding tubular member 144 having an outer side wall 146 and an inner side wall 148 there being a plurality of radial or non-radial rib members 152 extending inwardly from the inner side wall 148.
  • Positioned about the planar base 142 would be a plurality of apertures 150 extending through planar base 142.
  • an appropriate adhesive 156 would be applied to either the substrate 158 or the undersurface 160 of planar base 142 and base member 140 would then be positioned on the substrate 158.
  • the application of the adhesive 156 would be such that it would adhere the under surface 160 of base member 142 and to the substrate, but would also pass through or ooze through the various apertures 150 and 153 in the planar base so as to extend to the upper surface of planar base 142 thus insuring firm adhesion of base member 140 to the substrate 158, be it steel, vapor barrier, or cardboard void forms.
  • rebar 60 An appropriate length of rebar 60 would then be engaged in tubular member 144 and rigidly maintained by the rib members 152 extending therein. The installer would secure base members 140 in this fashion at the required distances on the substrate. The installer would then snap fit a threaded cap rebar engaging member 82 onto each piece of rebar 60, and threadedly secure and adjust screed guide/control joint clip 80 to the threaded cap rebar engaging member 82 such that the heights of the base members 90 or 108 of the dove tail channel members 88 or 102 would be equal.
  • Screed guide/control joints would then be snap fit and installed to the screed guide/control joint clips 80 and concrete would be placed encapsulating the base member 140, the rebar 60, the rebar engaging member 82, the screed guide/control joint clip 80, and the screed guide/control joint 10.
  • FIG. 13 is a top view of a screed guide/control joint clip 80B similar to the screed guide/control joint clip 80 illustrated in FIG. 4
  • FIG. 14 is an end view of screed guide/control joint 80B from end.
  • Screed guide/control joint clip 80B has a similar tubular member 84, having an internal bore 86, internal bore 86 having a single threaded member cooperable with the threaded cap rebar engaging member 82 as discussed with respect to FIG. 8 .
  • Screed guide/control joint clip 80B also has an identical first dovetail channel member 88.
  • a second dovetail channel member 102B is unitarily secured to open edge 104B of first dovetail channel member 88 by means of a flexible hinge arm 106B.
  • Second dovetail channel 102B is identical to the second dovetail channel member 102 as illustrated in FIG. 4 with the exception that it is not inverted.
  • Flexible hinge arm 106B is of sufficient length to allow second dovetail channel member 102B to be twisted or turned 180 degrees in a plane allowing for outer side walls or prongs 110B and 112B to be snap fit or inserted into first dovetail channel member 88 such that the two inner side walls or prongs 114B and 116B are in position for receipt of a small profile screed guide.
  • Flexible arm 106B eliminates the hinge 106 illustrated in FIG. 4 and presents an alternative manner for the production of the screed guide control joint clip.
  • FIG. 15 is a top view of a screed guide/control joint clip 80C similar to the screed guide/control joint clips 80 and 80B
  • FIG. 16 is an end view of screed guide/control joint clip 80C from end.
  • Screed guide/control joint clip 80C has a similar tubular member 84, having an internal bore 86, internal bore 86 having a single threaded member cooperable with the threaded cap rebar engaging member 82 as discussed with respect to FIG. 8 .
  • Screed guide/control joint clip 80C also has an identical first dovetail channel member 88, said first dovetail channel member 88 having a base portion 90 and two opposing upstanding side walls or prongs 92 and 94 such as described above.
  • a second dovetail channel member 102C is secured to first dovetail channel member 88. More specifically, first dovetail channel member 88 and second dovetail channel member 102C are made of a single piece.
  • Second dovetail channel member 102C comprises two inner side walls or prongs 114C and 116C, similar to the two inner side walls or prongs 114, 116 and 114B, 116B, respectively of clips 80 and 80B.
  • the two inner side walls or prongs 114C and 116C of second dovetail channel member 102C extend from the base portion 90 of first dovetail channel member 88, in the same manner as inner side walls or prongs 114, 116 extend from the base member 108 of clip 80.
  • the two inner side walls or prongs 114C and 116C are in position for receipt of a small profile screed guide/control joint, as described above.
  • FIG. 17 is a side view of screed guide/control joint clip 80C snap-fittingly engaged with a large-profile screed guide/control joint 10B, similar to the screed guide/control joint 10 described above.
  • the large-profile screed guide/control joint 10B is linear in shape, formed of extruded polymer and has a base portion 12B comprising a bottom wall 14B, two opposing side walls 16 and 18, angled upper walls 20 and 22 terminating in an upwardly extending tower portion 24B, said tower portion 24B being of triangular cross-section terminating in an upper linear edge 30B.
  • the base portion 12B and tower portion 24B comprise internal cross member ribs 34 for support.
  • the shape and dimensions of the base portion 12B are designed so that said base portion 12B can be snap-fittingly engaged with screed guide/control joint clip 80C, so that the bottom wall 14B is in contact with the base portion 90 and the opposing side walls 16 and 18 are respectively in contact with the two opposing upstanding side walls or prongs 92 and 94.
  • the bottom wall 14B of the base portion 12B comprises two longitudinal grooves 214, 216.
  • Each of the grooves 214, 216 is designed to receive one of the inner side walls 114C and 116C when base portion 12B is snap-fittingly engaged with screed guide/control joint clip 80C as described above.
  • Large-profile screed guide/control joint 10B and screed guide/control joint clip 80C can be installed on threaded cap rebar engaging member 82, snap-fitted on a length of rebar 60 engaged in tubular member 144 of base support member 140, in a similar manner as described above with respect to FIG. 12 .

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
EP14195223.4A 2013-12-02 2014-11-27 Système universel réglable de clip de joint de dilatation - guide pour poutre lisseuse et procédé d´installation d´un tel système Active EP2894255B1 (fr)

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Application Number Priority Date Filing Date Title
US13/998,730 US8925259B2 (en) 2012-12-01 2013-12-02 Adjustable universal screed guide/control joint clip system

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EP2894255A1 true EP2894255A1 (fr) 2015-07-15
EP2894255B1 EP2894255B1 (fr) 2017-02-01

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3059346A1 (fr) 2015-02-20 2016-08-24 Omniplast Ensemble pour la mise en place de béton, comprenant un joint de commande/guide de chape
CN112412051A (zh) * 2020-11-30 2021-02-26 赵桂荣 一种建筑用钢筋快速扎捆装置
CN113445688A (zh) * 2021-06-02 2021-09-28 浙江亚厦装饰股份有限公司 带固定座的找平件、装配式找平结构及安装方法
CN113463888A (zh) * 2021-07-13 2021-10-01 广东包清贴装饰工程有限公司 一种地面找平定位器以及找平施工工艺

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2518147A1 (fr) * 1981-12-14 1983-06-17 Toffolo Albert Support pour element de joint de revetement notamment en beton
EP0360682A1 (fr) * 1988-09-19 1990-03-28 Albert Toffolo Joint de dilatation pour dallage en béton
WO1998028500A1 (fr) * 1996-12-23 1998-07-02 Peter Pedrini Plaque de jonction pour le beton, clavetee
US20070256380A1 (en) * 2006-04-21 2007-11-08 Toffolo Sylvestre A Joints for concrete slabs, and joint supports

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2518147A1 (fr) * 1981-12-14 1983-06-17 Toffolo Albert Support pour element de joint de revetement notamment en beton
EP0360682A1 (fr) * 1988-09-19 1990-03-28 Albert Toffolo Joint de dilatation pour dallage en béton
WO1998028500A1 (fr) * 1996-12-23 1998-07-02 Peter Pedrini Plaque de jonction pour le beton, clavetee
US20070256380A1 (en) * 2006-04-21 2007-11-08 Toffolo Sylvestre A Joints for concrete slabs, and joint supports

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3059346A1 (fr) 2015-02-20 2016-08-24 Omniplast Ensemble pour la mise en place de béton, comprenant un joint de commande/guide de chape
CN112412051A (zh) * 2020-11-30 2021-02-26 赵桂荣 一种建筑用钢筋快速扎捆装置
CN113445688A (zh) * 2021-06-02 2021-09-28 浙江亚厦装饰股份有限公司 带固定座的找平件、装配式找平结构及安装方法
CN113463888A (zh) * 2021-07-13 2021-10-01 广东包清贴装饰工程有限公司 一种地面找平定位器以及找平施工工艺

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