EP0327770B1 - Verfahren zur Realisierung von mechanischen Betonstahlverbindungen, Betonstahlverbindung für ein solches Verfahren, und entsprechend erzielte mechanische Betonstahlverbindung - Google Patents
Verfahren zur Realisierung von mechanischen Betonstahlverbindungen, Betonstahlverbindung für ein solches Verfahren, und entsprechend erzielte mechanische Betonstahlverbindung Download PDFInfo
- Publication number
- EP0327770B1 EP0327770B1 EP88403093A EP88403093A EP0327770B1 EP 0327770 B1 EP0327770 B1 EP 0327770B1 EP 88403093 A EP88403093 A EP 88403093A EP 88403093 A EP88403093 A EP 88403093A EP 0327770 B1 EP0327770 B1 EP 0327770B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- concrete
- diameter
- section
- fact
- concrete reinforcing
- 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
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/57—Distinct end coupler
- Y10T403/5733—Plural opposed sockets
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/57—Distinct end coupler
- Y10T403/5746—Continuous thread
Definitions
- the invention relates to a method for making a mechanical connection of concrete rods, to a concrete rod authorizing the implementation of said method, as well as to a mechanical connection of concrete rods thus produced. It will find its application in particular in the field of construction of building elements or concrete buildings.
- Another proposed technique consists in using a mechanical connection.
- the conical thread system in which the ends of the concrete rods to be bonded are machined in the form of a conical thread, which allows them to be fitted and screwed inside a coupler to drown in the concrete block.
- This system also does not allow the use of a simple coupling sleeve with right and left thread to ensure the junction with traction adjustment. It is necessary to use several pieces to constitute a stack and allow a length adjustment.
- this technique requires oversizing the diameters of concrete bars, of the order of 20%, in order to resist the forces which are concentrated at the threaded ends of the bars. Its cost is high.
- Document GB-1.546.253 discloses a mechanical connection of concrete rods, in which the threaded ends of the concrete rods are assembled end to end using tapped connection sleeves.
- the objective of this document is to propose to put the threads of the rounds in compression and the threads of the sleeve in tension; this is authorized by providing between the two threads of the sleeve a space less than the space formed by the two chamfers of the ends of the rounds to be bonded.
- Another mechanical connection is also used; it is the crimping of the ends of rounds to be joined.
- a sleeve is used in which the two ends of the concrete rods are threaded. Using a jack and a press, the bush is crimped onto the concrete bars.
- Document FR-1-1.047.189 discloses a method of fastening for wires and metal bars in which the fastener is essentially constituted by a frusto-conical pressurized head, cold stamped, this after introduction of the wire or the bar into the fasteners.
- the shape of the head is such that it gives the fastener the necessary support and sufficient shear strength to transfer the danger of breaking into the wire or the bar.
- the BS-81 10: par 1: 1985-3.12.8.16.2 standard stipulates that concrete reinforcing bars assembled by means of a connecting sleeve must be able to undergo a tensile test in which the circles are subjected to a force corresponding to 60 of the elastic limit and after which the permanent elongation must not exceed 0.1 mm.
- the main object of the present invention is to present a method of making a mechanical connection of concrete rods, to a concrete rod authorizing the implementation of said method as well as to a mechanical connection of concrete rods thus produced which offer the advantages of high job security, easy implementation and competitive cost, while overcoming the drawbacks of known systems.
- the technique of the present invention requires limited machining and the use of conventional non-binding means.
- One of the aims of the present invention is to propose a method for producing a mechanical connection of concrete rods, to a concrete rod authorizing the implementation of said method, as well as to a mechanical connection of concrete rods thus produced, which make it possible to comply with the very severe deformation criteria imposed by certain standards or regulations imposing tests up to 80% of the elastic resistance.
- One of the aims of the present invention is to propose a method for producing a mechanical connection of concrete rods which makes it possible to produce mechanical connections in which all the threaded concrete rods are tested, which is fundamental in terms of quality control and which provides an important guarantee for the structure.
- the concrete reinforcing rod authorizing the implementation of the method according to the invention, having a nominal section "$", is characterized in that it has at least one threaded repressed end, said threaded repressed end having a reinforced section of diameter "di" greater than said nominal section "$", and a bottom diameter "d 2 " equal to or greater than said nominal section " ⁇ ".
- the mechanical connection of concrete rod obtained by implementing the method of the present invention comprising at least one connecting sleeve having at least one internal thread, as well as a concrete rod to be bonded having a nominal section.
- " ⁇ " and at least one end to be bonded is characterized in that the said end to be bonded has at least one zone reinforced by cold delivery, carrying a threaded part and corresponding to said tapping, said reinforced zone having a section of diameter "di" greater than the said nominal section "$", the said threaded portion having a diameter at the bottom of the thread "d 2 ", and being provided on the said reinforced zone such that the diameter "d 2 " is equal to or greater than the nominal section "4 >".
- the present invention relates to a method of making a mechanical connection of concrete rods, to a concrete rod authorizing the implementation of said method, as well as to a mechanical connection of concrete rods thus produced which will find their applications in particular in field of construction of concrete elements, buildings or buildings.
- tie rods are used which pass right through the concrete elements and which are placed under tension to generate a compressive force in the concrete.
- the adjustment of the tensile force and the choice of the location of the tie rods must be carefully determined by preliminary calculations.
- the tie rods are formed by a combination of concrete bars placed end to end.
- the junction used to secure the concrete reinforcing bars must be able to withstand the tensile force, be easily installed and also be economical.
- the mechanical connection of the present invention allows the fixing of two concrete rods 1 and 2, end to end, substantially coaxially as illustrated in FIG. 1.
- a tapped sleeve 3 for connection is used to receive the ends threaded 4 and 5 respectively of concrete bars 1 and 2.
- the end of the concrete reinforcing bar is reinforced, so that it is more resistant than the central part of the bar.
- the rupture occurs in the central part of the bar and no longer at the junction.
- the choice of the section of the concrete reinforcing bar can be made according to the resistance to be obtained in the central part of the bar and no longer in the weakened part of the connection as is traditionally encountered.
- the concrete bars used in the context of the present invention will be of smaller cross section, which makes it possible to achieve substantial savings.
- the reinforcement of the end of the concrete rod to be bonded is obtained, prior to threading, by a cold discharge.
- the traditional technique of cold delivery means that one obtains dimensional modifications of the workpiece greater than 30%. For example, a diameter of 40 mm cold pressed using traditional techniques leads to a diameter of around 55 mm. However, such a deformation of the material does not provide the expected results and there is a loss of strength. This is located mainly at the level of the diameter change zone. Tensile tests show that failure occurs at this level.
- the end is reinforced over the length of the thread by a cold discharge which provides an increase in diameters, equal to or less than 30%, and in particular between 10 and 30%.
- This value makes it possible both to obtain an increase in resistance due to the increase in cross-section and also a slight increase in internal stress so as not to weaken the concrete reinforcing bar at the level of the change in diameter.
- Table 1 indicates, by way of example, values of delivery diameter di to be obtained before threading as a function of the nominal diameter 4) of the bar used, giving good results in use.
- the values indicated show that the cold discharge can be in percentage the smaller the larger the bar diameter.
- the cross section of the concrete ring at the level of the thread d 2 of the discharge end must be at least slightly greater than the current cross section ⁇ of the concrete round to be connected.
- the delivery operation of the present invention should preferably be carried out cold. Indeed, a hot discharge has the disadvantage of weakening the transition zone due to uncontrolled cooling. Generally, hyper-quenching occurs which weakens the metal. The hot process must also be implemented off site because it requires ovens which must be supplied with energy often not available on site.
- Concrete rounds being generally made of steels with a high carbon and manganese content, are therefore very sensitive to thermal shock and cold delivery is therefore recommended.
- the length of the thread produced at the end of the concrete rounds must correspond substantially to the diameter ⁇ of said round to provide security, since thread lengths of 0.7 times the diameter are sufficient to resist traction. However, it could be higher.
- the mechanical connection of the present invention may also be implemented in the case of fixed concrete rods, which cannot be moved aside as illustrated in FIG. 2.
- one of the bars 1 has a thread 4 of double length made around a repressed end, and the sleeve 3 initially placed around the thread 4 will be rotated to cover the threads of the concrete rods 2.
- the threads 4 and 5 will have the same direction.
- the implementation of the mechanical connection of the present invention can also be carried out at the level of anchor points for concrete rods 1 as illustrated in FIG. 3.
- the threaded end 4 of the concrete ring receives beforehand a backflow made cold to reinforce it, and this end is fixed to an anchoring sleeve 6 integral with the concrete block 7.
- the end 4 and / or 5 of the concrete reinforcing bar 1 and / or 2, reinforced by a backflow, is prestressed.
- FIGS. 4 and 5 illustrate by way of example two devices that can be used.
- a threaded support sleeve 11 is placed on it then the concrete ring thus equipped is immobilized and the end considered 4 is subjected to action a cylinder 6 or the like.
- the sleeve 11 is then blocked on the support plate 7 and the jack acts directly on the end to be constrained.
- the end 8 of the jack can be equipped with a punch which makes an indelible mark at the level of the driven end 4.
- FIG. 5 shows a completely equivalent, but inverted procedure, in which a threaded support sleeve 11 and a support plate 7 are used. But, in this case, it is the body of the concrete rod 1 which is blocked by any clamp device, shown schematically at 9 in the figure, and the jack acts on the support plate 7, in the direction of the arrows 10, action which is reflected on the threaded support sleeve 11 for realize the constraint of the end 4.
- a mechanical compressive stress is carried out with an equivalent force of between 70 and 95% of the elastic limit of the concrete reinforcing bar.
- This method of producing a concrete reinforcing bar therefore makes it possible to obtain a concrete reinforcing bar 1 or 2 having a forced threaded forced end 4 or 5.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Joining Of Building Structures In Genera (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Forging (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88403093T ATE84836T1 (de) | 1988-02-03 | 1988-12-06 | Verfahren zur realisierung von mechanischen betonstahlverbindungen, betonstahlverbindung fuer ein solches verfahren, und entsprechend erzielte mechanische betonstahlverbindung. |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8801611 | 1988-02-03 | ||
FR8801611A FR2626600B1 (fr) | 1988-02-03 | 1988-02-03 | Liaison mecanique de ronds a beton |
FR8815472 | 1988-11-14 | ||
FR888815472A FR2639054B2 (fr) | 1988-02-03 | 1988-11-14 | Perfectionnements apportes a la liaison mecanique de ronds a beton, procede de realisation de telles liaisons et rond a beton obtenu par la mise en oeuvre dudit procede |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0327770A1 EP0327770A1 (de) | 1989-08-16 |
EP0327770B1 true EP0327770B1 (de) | 1993-01-20 |
EP0327770B2 EP0327770B2 (de) | 1997-12-03 |
Family
ID=26226495
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88403093A Expired - Lifetime EP0327770B2 (de) | 1988-02-03 | 1988-12-06 | Verfahren zur Realisierung von mechanischen Betonstahlverbindungen, Betonstahlverbindung für ein solches Verfahren, und entsprechend erzielte mechanische Betonstahlverbindung |
Country Status (17)
Country | Link |
---|---|
US (1) | US5158527A (de) |
EP (1) | EP0327770B2 (de) |
JP (1) | JPH083238B2 (de) |
KR (1) | KR940008311B1 (de) |
CN (1) | CN1035834C (de) |
AU (1) | AU610686B2 (de) |
CA (1) | CA1327893C (de) |
DE (1) | DE3877739T3 (de) |
DK (2) | DK169359B1 (de) |
ES (1) | ES2039677T5 (de) |
FI (1) | FI90457C (de) |
FR (1) | FR2639054B2 (de) |
GR (1) | GR3026255T3 (de) |
HK (1) | HK119693A (de) |
MY (1) | MY103809A (de) |
NO (1) | NO176848C (de) |
PT (1) | PT89599B (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990008867A1 (en) * | 1989-01-26 | 1990-08-09 | Square Grip Limited | Concrete reinforcement bars and couplings therebetween |
FR2653809A1 (fr) * | 1989-10-26 | 1991-05-03 | Techniport Sa | Installation de realisation de ronds a beton. |
FR2689156A1 (fr) * | 1992-03-30 | 1993-10-01 | Techniport Sa | Procédé de réalisation d'une liaison mécanique de ronds à béton, liaison obtenue par le procédé, rond à béton autorisant la mise en Óoeuvre du dit procédé, et installation de préparation de ronds à béton. |
US5308184A (en) * | 1989-01-27 | 1994-05-03 | Techniport S.A. | Method and apparatus for mechanically joining concrete-reinforcing rods |
EP0745011A1 (de) | 1994-02-16 | 1996-12-04 | Ccl Systems Limited | Formen von gewinde |
US5660594A (en) * | 1992-06-01 | 1997-08-26 | Tartuntamarkkinointi Oy | Method of making a threaded connection for reinforcing bars |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE449499B (sv) * | 1985-10-28 | 1987-05-04 | Kjell Landaeus | Skarvanordning mellan betongpalar |
US4913639A (en) * | 1988-09-13 | 1990-04-03 | Wheeler Robert G | Composite caul plate |
EP0552424A1 (de) * | 1992-01-24 | 1993-07-28 | Erico International Corporation | Verbindung für Bewehrungsstäbe mit hoher dynamischen Stärke und Verfahren zu seiner Herstellung |
US6265065B1 (en) * | 1993-10-29 | 2001-07-24 | Mccallion James P. | Concrete reinforcement protection system |
FR2731028B1 (fr) | 1995-02-23 | 1997-04-18 | Mure Ets | Dispositif de liaison de barres d'armature a haute adherence pour beton arme, et procede pour son obtention |
DE19626649A1 (de) * | 1996-07-03 | 1998-01-08 | Deha Ankersysteme | Schraubkupplung für kraftübertragende Stäbe |
KR100248963B1 (ko) | 1998-03-31 | 2000-03-15 | 정경옥 | 콘크리트 보강용 이형봉강의 연결부 구조와 그 연결부의 가공방법 |
AU6008099A (en) * | 1999-09-27 | 2001-04-30 | Gyeng Ok Chung | Method of processing connecting ends of deformed steel bar used for reinforcing concrete, and deformed steel bar processed by this method |
AU5366100A (en) | 1999-12-08 | 2001-06-14 | Suntisuk Dr Plooksawasdi | Self coupling steel bar connections |
US6880224B2 (en) * | 2003-06-25 | 2005-04-19 | Erico International Corporation | Deformed reinforcing bar splice and method |
US7624556B2 (en) | 2003-11-25 | 2009-12-01 | Bbv Vorspanntechnik Gmbh | Threaded deformed reinforcing bar and method for making the bar |
US7313942B2 (en) * | 2004-05-27 | 2008-01-01 | Dextra Asia Co., Ltd. | Forging machine for the upsetting of deformed reinforcement bars |
CN100348803C (zh) * | 2004-11-16 | 2007-11-14 | 周兆弟 | 上螺下顶接桩扣及预制件 |
US8696231B2 (en) * | 2005-12-21 | 2014-04-15 | Fisher Controls International Llc | Load relieving stem connectors |
SG155801A1 (en) * | 2008-03-24 | 2009-10-29 | Chua Bong Sai | Method for working a thread on deformed reinforcing bar |
JP5327780B2 (ja) * | 2008-06-05 | 2013-10-30 | 前田建設工業株式会社 | 鉄筋の継手構造 |
JP5327779B2 (ja) * | 2008-06-05 | 2013-10-30 | 前田建設工業株式会社 | 鉄筋の定着構造 |
KR200452174Y1 (ko) * | 2008-12-31 | 2011-02-10 | 구미에이테크솔루션주식회사 | 무구배 성형품 취출용 금형장치 |
MX346834B (es) | 2010-06-24 | 2017-04-03 | Nucor Corp | Un perno de anclaje roscado de ajuste tensor. |
US9010165B2 (en) | 2011-01-18 | 2015-04-21 | Nucor Corporation | Threaded rebar manufacturing process and system |
CN102927106A (zh) * | 2011-08-12 | 2013-02-13 | 成都科盛石油科技有限公司 | 一种易于安装和拆卸的连接套筒 |
US20140271034A1 (en) * | 2013-03-14 | 2014-09-18 | John D. Pryor | Post installed concealable concrete anchor |
CN104060770B (zh) * | 2013-03-22 | 2016-03-30 | 中冶建筑研究总院有限公司 | 钢筋机械连接方法 |
FR3006351B1 (fr) | 2013-05-29 | 2015-05-29 | Magnetude | Barre d'armature a haute adherence pour beton arme |
CN104251797A (zh) * | 2014-09-30 | 2014-12-31 | 任红 | 一种玻璃筋材抗拉实验用的夹具 |
WO2020183071A1 (fr) | 2019-03-13 | 2020-09-17 | Bartec Group | Procédé de préparation d'une barre d'armature pour béton armé |
CN110130585A (zh) * | 2019-05-21 | 2019-08-16 | 上海森信建设集团有限公司 | 一种大直径钢筋自由端对接装置及其使用方法 |
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US1085515A (en) * | 1913-01-22 | 1914-01-27 | Lee W Galloway | Coupling for drills. |
US2186482A (en) * | 1938-07-16 | 1940-01-09 | Copperweld Steel Co | Ground rod |
FR1047189A (fr) * | 1951-07-06 | 1953-12-11 | Procédé d'attache pour fils et barres métalliques | |
US3327380A (en) * | 1964-06-08 | 1967-06-27 | Howlett Machine Works | Prestressing method |
FR1459978A (fr) * | 1965-10-12 | 1966-06-17 | Saint Chamond Granat Ets | Procédé d'assemblage de barres en bout |
US3415552A (en) * | 1966-11-29 | 1968-12-10 | Howlett Machine Works | Splicing metallic reinforcing rods with a threaded coupling sleeve |
US3438301A (en) * | 1967-04-10 | 1969-04-15 | Emhart Corp | Hollow rivet and pull-stem assembly for blind fastening or the like |
US3850535A (en) * | 1972-09-11 | 1974-11-26 | Hewlett Machines Works | Connecting means and method for forming reinforcing rod connection |
IT1030609B (it) * | 1974-09-04 | 1979-04-10 | Tag Vertrieb Ag | Sistema per la produzione di raccordi o giunti a tenuta idraulica direttamente sulle condotte tuberie o simili interessate dai raccordi stessi raccordi attuanti il detto sistema e condotte tuberie o simili utilizzanti tali raccordi |
JPS5237114B2 (de) * | 1974-09-19 | 1977-09-20 | ||
JPS5238329A (en) * | 1975-09-23 | 1977-03-24 | Kubota Ltd | Selffpropelled farm machinery |
GB1578328A (en) * | 1976-05-14 | 1980-11-05 | Ccl Systems Ltd | Compressing of a sleeve on to concrete-reinforcing bars |
NO774364L (no) * | 1977-12-19 | 1978-06-21 | British Steel Corp | Skjoeteanordning for armeringsstaal. |
US4143986A (en) * | 1978-01-09 | 1979-03-13 | Antosh Leon A | Rebar splice |
US4484833A (en) * | 1981-09-30 | 1984-11-27 | Consolidated Metal Products, Inc. | Sucker rod |
US4500224A (en) * | 1983-07-22 | 1985-02-19 | Nss, Industries, Inc. | Coupling for sucker rod assembly |
DE3344775C1 (de) * | 1983-12-10 | 1984-10-11 | Berchem & Schaberg Gmbh, 4650 Gelsenkirchen | Vorspannglieder für Baukonstruktionen |
GB2162915B (en) * | 1984-08-09 | 1988-06-02 | Allied Steel Wire Ltd | Reinforcing bar joints |
CH665444A5 (de) * | 1985-01-17 | 1988-05-13 | Losinger Ag | Zwischenankeranordnung zum vorspannen von bauteilen, die in mehreren bauetappen erstellt werden, und ein verfahren zum herstellen einer solchen zwischenankeranordnung. |
JP2835837B2 (ja) * | 1985-04-03 | 1998-12-14 | 住友金属工業株式会社 | 力伝達材の接合部 |
US4799307A (en) * | 1986-05-30 | 1989-01-24 | Tech Research, Inc. | Anchor apparatus for a tendon in prestressed concrete slab |
DE8600406U1 (de) * | 1986-01-10 | 1986-05-07 | Dyckerhoff & Widmann AG, 81902 München | Spannpresse zum Spannen eines Bündelspannglieds für Spannbeton |
US4819469A (en) * | 1987-03-18 | 1989-04-11 | Erico International Corporation | Method for rolling tapered threads on bars |
US5067844A (en) * | 1987-09-28 | 1991-11-26 | Erico International Corporation | Reinforcing bar coupler |
-
1988
- 1988-11-14 FR FR888815472A patent/FR2639054B2/fr not_active Expired - Lifetime
- 1988-12-06 EP EP88403093A patent/EP0327770B2/de not_active Expired - Lifetime
- 1988-12-06 ES ES88403093T patent/ES2039677T5/es not_active Expired - Lifetime
- 1988-12-06 DE DE3877739T patent/DE3877739T3/de not_active Expired - Lifetime
-
1989
- 1989-01-23 CA CA000588921A patent/CA1327893C/en not_active Expired - Lifetime
- 1989-01-27 US US07/302,201 patent/US5158527A/en not_active Expired - Lifetime
- 1989-01-30 MY MYPI89000108A patent/MY103809A/en unknown
- 1989-01-30 AU AU28901/89A patent/AU610686B2/en not_active Expired
- 1989-02-02 FI FI890509A patent/FI90457C/fi not_active IP Right Cessation
- 1989-02-02 DK DK048189D patent/DK169359B1/da not_active IP Right Cessation
- 1989-02-02 NO NO890432A patent/NO176848C/no not_active IP Right Cessation
- 1989-02-02 JP JP1022732A patent/JPH083238B2/ja not_active Expired - Fee Related
- 1989-02-02 PT PT89599A patent/PT89599B/pt not_active IP Right Cessation
- 1989-02-02 DK DK048189A patent/DK48189A/da not_active IP Right Cessation
- 1989-02-03 KR KR1019890001291A patent/KR940008311B1/ko not_active IP Right Cessation
- 1989-02-03 CN CN89100627A patent/CN1035834C/zh not_active Expired - Lifetime
-
1993
- 1993-11-04 HK HK1196/93A patent/HK119693A/xx not_active IP Right Cessation
-
1998
- 1998-02-27 GR GR980400433T patent/GR3026255T3/el unknown
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990008867A1 (en) * | 1989-01-26 | 1990-08-09 | Square Grip Limited | Concrete reinforcement bars and couplings therebetween |
US5308184A (en) * | 1989-01-27 | 1994-05-03 | Techniport S.A. | Method and apparatus for mechanically joining concrete-reinforcing rods |
FR2653809A1 (fr) * | 1989-10-26 | 1991-05-03 | Techniport Sa | Installation de realisation de ronds a beton. |
FR2689156A1 (fr) * | 1992-03-30 | 1993-10-01 | Techniport Sa | Procédé de réalisation d'une liaison mécanique de ronds à béton, liaison obtenue par le procédé, rond à béton autorisant la mise en Óoeuvre du dit procédé, et installation de préparation de ronds à béton. |
EP0563490A1 (de) * | 1992-03-30 | 1993-10-06 | Etablissements A. Mure | Verfahren zur Realisierung mechanischer Betonstahlverbindungen, Verbindung nach diesem Verfahren, Betonstahl für dieses Verfahren und Einrichtung zur Bearbeitung der Betonstähle |
US5660594A (en) * | 1992-06-01 | 1997-08-26 | Tartuntamarkkinointi Oy | Method of making a threaded connection for reinforcing bars |
EP0745011A1 (de) | 1994-02-16 | 1996-12-04 | Ccl Systems Limited | Formen von gewinde |
Also Published As
Publication number | Publication date |
---|---|
CN1035834C (zh) | 1997-09-10 |
FI90457B (fi) | 1993-10-29 |
FI890509A0 (fi) | 1989-02-02 |
ES2039677T3 (es) | 1993-10-01 |
NO890432L (no) | 1989-08-04 |
MY103809A (en) | 1993-09-30 |
DE3877739D1 (de) | 1993-03-04 |
CA1327893C (en) | 1994-03-22 |
FI90457C (fi) | 1994-10-14 |
NO890432D0 (no) | 1989-02-02 |
FI890509A (fi) | 1989-08-04 |
CN1046205A (zh) | 1990-10-17 |
KR940008311B1 (ko) | 1994-09-12 |
NO176848C (no) | 1995-06-07 |
AU2890189A (en) | 1989-08-03 |
KR890013297A (ko) | 1989-09-22 |
EP0327770B2 (de) | 1997-12-03 |
DK48189D0 (da) | 1989-02-02 |
DK169359B1 (da) | 1994-10-10 |
EP0327770A1 (de) | 1989-08-16 |
JPH01295958A (ja) | 1989-11-29 |
DE3877739T3 (de) | 1999-01-14 |
FR2639054B2 (fr) | 1992-07-03 |
GR3026255T3 (en) | 1998-05-29 |
NO176848B (no) | 1995-02-27 |
DE3877739T2 (de) | 1993-08-19 |
DK48189A (da) | 1989-08-04 |
PT89599A (pt) | 1989-10-04 |
ES2039677T5 (es) | 1998-05-01 |
HK119693A (en) | 1993-11-12 |
PT89599B (pt) | 1994-01-31 |
JPH083238B2 (ja) | 1996-01-17 |
US5158527A (en) | 1992-10-27 |
FR2639054A2 (fr) | 1990-05-18 |
AU610686B2 (en) | 1991-05-23 |
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