US20140147198A1 - One-touch type quick coupler for connecting steel bars - Google Patents
One-touch type quick coupler for connecting steel bars Download PDFInfo
- Publication number
- US20140147198A1 US20140147198A1 US14/127,200 US201214127200A US2014147198A1 US 20140147198 A1 US20140147198 A1 US 20140147198A1 US 201214127200 A US201214127200 A US 201214127200A US 2014147198 A1 US2014147198 A1 US 2014147198A1
- Authority
- US
- United States
- Prior art keywords
- steel bars
- steel bar
- grip units
- touch type
- bodies
- 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.)
- Abandoned
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- 229910000831 Steel Inorganic materials 0.000 title claims description 104
- 239000010959 steel Substances 0.000 title claims description 104
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000002708 enhancing effect Effects 0.000 claims description 2
- 239000004570 mortar (masonry) Substances 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- E04C5/166—Connectors or means for connecting parts for reinforcements the reinforcements running in different directions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
- F16B2200/10—Details of socket shapes
Abstract
Disclosure relates to a method of sharing a session key between wireless communication terminals using a variable-length authentication code. The method includes: generating a public key by using an own private key; generating a message including the public key and a first random number and encoding the message using an own secret key to exchange an encrypted message with the other terminal; decoding the encrypted message of the other terminal by receiving a secret key of the other terminal; generating an authentication code by calculating the first random number and a second random number included in the decoded message; obtaining a medium value from the authenticated code; and generating a session key by using a public key included in the decoded message of the other terminal.
Description
- The present invention relates to a one-touch type quick coupler for connecting steel bars, and more particularly, to a one-touch type quick coupler for connecting steel bars, which grips the steel bars using wedge-shaped grip units having saw teeth formed thereon and bodies.
- In order to connect steel bars to be used in a concrete structure in various construction sites, the steel bars were fixed to each other by overlapping and tying them with steel wire in a prior art. However, since in such a method of fixing steel bars, an operator should wind steel wire around steel bars several times and then ties the steel wire, the operation is cumbersome and the steel bars would not be perpendicular to each other but crooked. Further, since the steel wire is weak in strength, it may be easily broken and its connection may be released.
- In order to solve such a problem, steel bar connection devices (coupling devices) for easily and securely connecting steel bars by a means other than steel wire have been developed and used.
- However, most of conventionally developed steel bar connection devices fix steel bars by inserting them into a housing and then tightening a screw to fix the housing, which is structurally complicated, makes it difficult to connect the steel bars, and thus, requires much time, effort and cost in the operation.
- As an approach for solving the problems, Korean Patent Nos. 0439305 (Jun. 28, 2004), 04622901 (Dec. 8, 2004), and 1003302 disclose one-touch type steel bar couplers capable of easily connecting steel bars.
- However, the prior art one-touch type steel bar couplers may provide strong binding force when ribs of steel bars have bilateral symmetry but not provide strong binding force in a case of steel bars having bilaterally asymmetrical ribs. That is, the steel bar connection devices of the above-described patents have not been commercialized since when steel bars having bilaterally asymmetrical ribs are inserted, the ribs of one side of the steel bars are securely coupled but the ribs of the opposite side are not coupled to provide weak binding force. In addition, there is high probability of deformation of the steel bar connection devices or loss of balls by thermal stress or other external force, which makes the commercialization impossible.
- Koran Patent No. 10-1039120 filed and registered in the name of the present applicant solves the problems of the prior art steel bar couplers. As shown in
FIGS. 1 and 2 , a coupler includes a coupler body 10 having a hollow portion 11 with both ends formed to be open so that two steel bars B are inserted into both the ends and two taper portions 12 formed inside both the ends of the hollow portion 11 to have an inner diameter reduced axially toward the outside; a plurality ofball groups 30 each having a plurality ofballs elastic member 40 installed within the coupler body 10 to provide elastic force pushing theball groups 30 axially toward the outside therein, wherein when steel bars B are inserted into the hollow portion 11 through both the ends of the coupler body 10, ribs R of the outer peripheral surfaces of the steel bars B are inserted between theballs balls ball groups 30, so that the steel bars B can be constrained not to escape by the wedging action of theballs - However, such a ball type one-touch coupler is easy to couple steel bars and hard to allow the once-coupled steel bars to escape, but the steel bars are stretched and escape if tensile force is increasingly applied to the steel bars. That is, if the coupled portion of the steel bar and the piece body is formed in a ball or gradually curved shape, the ribs of the steel bar pushes the piece body and escapes even though adhesion is superior. In addition, since the steel bar has ductile properties and the piece body is made of a high strength material, if the steel bar is coupled and then pulled in the direction opposite to the insertion direction, a portion of the piece body at which joints of the steel bar are gripped presses the ductile steel bar to deform the shape of the steel bar (i.e., the steel bar becomes thin or pushes the joints to be deformed and escape), and eventually, there remains a problem that desire tensile force cannot be obtained.
- The present invention is conceived to solve the aforementioned problems in the prior art. An object of the present invention is to provide a one-touch type quick coupler for connecting steel bars, which can securely and stably grip steel bars by operation of grip units having saw teeth formed thereon in the coupler and is also easily manufactured and superior in cost of production and price competitiveness by saving a material cost.
- According to an aspect of the present invention for achieving the objects, there is provided a one-touch type quick coupler for connecting steel bars having left and right bodies, into which ends of the steel bars are inserted and fixed, and left and right grip units installed inside the left and right bodies to grip the ends of the steel bars, wherein the left and right bodies respectively include front steel bar insertion holes, sidewalls and rear holes, the left and right bodies have rear portions coupled to each other, each inner diameter of the sidewalls has an inclined taper shape, each outer diameter of the left and right grip units has an inclined taper shape, the inclined portions of the left and right grip units respectively cooperate with the inclined portions of the inner diameters of the sidewalls to perform wedge action, thereby compressing the steel bars not to escape, each inner diameter of the left and right grip units has saw teeth formed in a lengthwise direction, and bottom sides of the saw teeth are formed with grooves for receiving joint protrusions of the steel bars.
- According to one embodiment of the present invention, each of the left and right grip units is divided into a plurality of pieces, the plurality of pieces are arranged radially from the steel bar insertion hole as a center, grip unit guides are correspondingly inserted between the plurality of divided pieces of the left and right grip units to form a generally circular cross section, and each of the left and right grip units has an inner diameter portion concavely rounded to grip the steel bar, both lateral surfaces convexly rounded toward the outside, and an outer diameter portion convexly rounded toward the outside to be in contact with each of the bodies.
- A one-touch type quick coupler according to the present invention has advantages in that the coupler can securely and stably grip steel bars by operation of grip units having saw teeth formed thereon in the coupler and also be easily manufactured and superior in cost of production and price competitiveness by saving a material cost.
-
FIG. 1 is a perspective view of a prior art coupler. -
FIG. 2 is a horizontal sectional view of the coupler ofFIG. 1 . -
FIG. 3 is longitudinal sectional view of a coupler according to the present invention. -
FIG. 4 is a horizontal sectional view of the coupler of the present invention. -
FIG. 5 is a partially cut away view of a grip unit of the coupler of the present invention. -
FIG. 6 is a longitudinal sectional view of the grip unit of the coupler of the present invention. -
FIG. 7 is a bottom view of the grip unit of the coupler of the present invention. -
FIG. 8 is a plan view of the grip unit of the coupler of the present invention. -
FIG. 9 is a longitudinal sectional view of a grip unit of a coupler of another embodiment according to the present invention. -
FIG. 10 is a plan view of the grip unit of the coupler of the other embodiment according to the present invention. -
FIG. 11 is a view of the grip unit ofFIG. 9 with a concave-convex grooves formed thereon. -
FIG. 12 is a view of a body of the coupler of the present invention fixed to a wall surface. -
FIG. 13 is a view of bodies of the coupler of the present invention coupled in a “T” shape. -
FIG. 14 is a view of bodies of the coupler of the present invention coupled in a “+” shape. -
FIG. 15 is a view of bodies of the coupler of the present invention coupled in an “L” shape. - Hereinafter, preferred embodiments of a one-touch type quick coupler for connecting steel bars according to the present invention will be described in detail with reference to the accompanying drawings.
- Referring to
FIGS. 3 to 8 , a coupler of the present invention includes left andright bodies steel bars 300 are inserted and fixed, and left andright grip units right bodies steel bars 300. The terms “left” and “right” sides respectively mean the left and right sides inFIG. 3 for convenience of description, and the left and right sides of the bodies and the grip units have the same configuration and function as each other. - The left and
right bodies steel bars 300 to each other respectively include front steelbar insertion holes sidewalls rear holes right bodies - The left and right bodies are manufactured separately, and then, may be coupled to each other by threaded fastening, welding or the like. Any one of the left and right bodies has a male thread formed on the outer periphery of the body rear hole and the other body has a female thread formed on the inner periphery of the body rear hole, and thus, the left and right bodies may be threadedly coupled to each other to be detachable.
- In addition, since each inner diameter of the
sidewalls right grip units right grip units sidewalls steel bars 300 not to escape. That is, even though the left and right steel bars are pulled in a state where the steel bars are connected to each other, they are rather firmly bound to each other not to escape by wedge action. - Further, each of the left and
right grip units right grip units right grip units body - Meanwhile, for accuracy of operation, the piece has protrusions formed on both the lateral surfaces and correspondingly the grip unit guide has protrusion grooves formed thereon.
- In the present invention, the left and right bodies and the pieces may be variously manufactured in a forging, press or casting process using a mold, or a cutting process. The left and right bodies are made of a material, such as stainless steel, having higher strength than the steel bar.
- In the meantime, the grip unit guide corresponding to each piece is made of metal or plastic. Further, the rear portions of the grip unit guides 120 and 220 are respectively connected to left and
right guide plates - Therefore, according to the present invention, since the lateral surfaces of the grip unit are circular, even when a lateral force is applied, the stress may be dispersed and thus damage or deformation does not occur. Accordingly, it is possible to withstand very large strength and to secure sufficient performance even though the grip units are thin.
- Further, according to the present invention, each inner diameter portion of the left and
right grip units teeth 600 formed in the lengthwise direction. The bottom sides of thesaw teeth 600 are formed withgrooves 601 capable of receiving thejoint protrusions 301 of thesteel bars 300, eachgroove 601 is formed to be round, and each of thesaw teeth 600 has a cross section in a “” shape. - The groove has a space inside each bottom side of the saw teeth to prevent a decrease in contact area when the joint protrusion of the steel bar has a large height since a joint protrusion of a steel bar has a generally fixed protruding height but may be different in the height according to a manufacturer of a steel bar. Also, the
saw teeth 600 are formed in the lengthwise direction of the left andright grip units joint protrusions 301 of the steel bar. Thus, even though joint protrusions are formed to be offset with respect to ribs formed on both sides of a steel bar, it is possible to easily grip the steel bar. A steel bar is released in a state where joint protrusions formed in the horizontal direction between two protruding ribs generally formed in the lengthwise direction in manufacture are formed to be offset in the lengthwise direction at a certain pitch between the two protruding ribs. - In addition, left and right
compression coil springs 130 and 230 are respectively installed between the pieces of the left andright grip units right grip units - Also, according to the present invention, as shown in
FIGS. 9 and 10 , the left andright grip units grooves 601 a instead of thecurved grooves 601. Also, as shown inFIG. 11 , each plane-shapedgroove 601 a may be formed with a concave-convex portion 602 by knurling, thereby enhancing contact area and pressure with a steel bar. - Further, according to the present invention, a step is formed on the steel bar-side end of each outer diameter of the left and
right grip units right bodies steel bar 300 is pulled, the pressure applied between the left andright grip units right bodies - Furthermore, the steel bar-side end of each outer diameter of the
bodies - In the meantime, according to the present invention, the left and right bodies with the left and right grip units housed therein are coupled to each other and used to connect two steel bars. In addition, as shown in
FIGS. 13 to 15 , they are coupled to a hollow pipe in the shape of a tee T, a cross + or an elbow L and thus used to connect steel bars. - In the same way, the left and right bodies with the left and right grip units housed therein are separated from each other, as shown in
FIG. 12 , only theleft body 100 orright body 200 is coupled to a wall W and used in sole, which is used when thesteel bar 300 is coupled to a wall. - The embodiments of a one-touch type quick coupler for connecting steel bars according to the above-described present invention are disclosed only for illustrative purposes to help understanding of the present invention. The present invention is not limited thereto, it will be apparent to those skilled in the art that various modifications and implementations can be made thereto within the scope of the appended claims.
- Therefore, a one-touch type quick coupler according to the present invention has advantages in that the coupler can securely and stably grip steel bars by operation of grip units having saw teeth formed thereon in the coupler and be also easily manufactured and superior in cost of production and price competitiveness by saving a material cost.
- The present invention may be applied as one-touch steel bar coupler for connecting steel bars forming a construction framework to each other or to a wall during a building work.
Claims (9)
1. A one-touch type quick coupler for connecting steel bars 300 having left and right bodies (100, 200), into which ends of the steel bars 300 are inserted and fixed, and left and right grip units (110, 210) installed inside the left and right bodies (100, 200) to grip the ends of the steel bars (300),
wherein the left and right bodies (100, 200) respectively include front steel bar insertion holes (101, 201), sidewalls (102, 202) and rear holes (103, 203), the left and right bodies (100, 200) have rear portions coupled to each other, each inner diameter of the sidewalls (102, 202) has an inclined taper shape, each outer diameter of the left and right grip units (110, 210) has an inclined taper shape, the inclined portions of the left and right grip units (110, 210) respectively cooperate with the inclined portions of the inner diameters of the sidewalls (102, 202) to perform wedge action, thereby compressing the steel bars (300) not to escape, each inner diameter of the left and right grip units (110, 210) has saw teeth (600) formed in a lengthwise direction, bottom sides of the saw teeth (600) are formed with grooves (601) for receiving joint protrusions (301) of the steel bars (300), each of the left and right grip units (110, 210) is divided into a plurality of pieces, the plurality of pieces are arranged radially from the steel bar insertion hole as a center, grip unit guides (120, 220) are correspondingly inserted between the plurality of divided pieces of the left and right grip units (110, 210) to form a generally circular cross section, and each of the left and right grip units (110, 210) has an inner diameter portion concavely rounded to grip the steel bar, both lateral surfaces convexly rounded toward the outside, and an outer diameter portion convexly rounded toward the outside to be in contact with each of the bodies (100, 200).
3. The one-touch type quick coupler according to claim 1 , wherein the saw teeth (600) are formed in a lengthwise direction of the left and right grip units (110, 210) and formed at an interval of ½ of a pitch of the joint protrusions (301) of the steel bar.
4. The one-touch type quick coupler according to claim 1 , wherein rear portions of the grip unit guides (120, 220) are respectively connected to left and right guide plates (121, 221) having a plurality of small holes radially bored therethrough, and compression coil springs (130, 230) are respectively installed between the pieces of the left and right grip units (110, 210) and the guide plates (121, 221), so that the left and right grip units (110, 210) operate smoothly when the steel bars (300) are inserted and fixed.
5. The one-touch type quick coupler according to claim 1 , wherein the left and right grip units (110, 210) are formed with planes instead of the grooves (601).
6. The one-touch type quick coupler according to claim 5 , wherein the plane is formed with a concave-convex portion (602) by knurling, thereby enhancing contact area and pressure with a steel bar.
7. The one-touch type quick coupler according to claim 1 , wherein a step is formed on a steel bar-side end of each outer diameter of the left and right grip units (110, 210) and a corresponding step is formed on each inner diameter of the left and right bodies (100, 200), so that when the steel bar (300) is pulled, pressure applied between the left and right grip units (110, 210) and the left and right bodies (100, 200) can be dispersed.
8. The one-touch type quick coupler according to claim 1 , wherein a steel bar-side end of each outer diameter of the bodies (100, 200) is formed to be inclined, thereby sufficiently filling mortar without pores or empty spaces when concrete construction is performed.
9. The one-touch type quick coupler according to claim 1 , wherein the left and right bodies (100, 200) with the left and right grip units (110, 210) housed therein are separated from each other and used in sole, and the separated left or right body is threadedly coupled to a wall to attach the steel bar (300) to the wall or coupled to a hollow pipe in the shape of a tee T, a cross + or an elbow L and thus used to connect the steel bars (300).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2011-0090811 | 2011-09-07 | ||
KR1020110090811A KR101102531B1 (en) | 2011-09-07 | 2011-09-07 | One touch type quick coupler for reinforcement bar connection |
PCT/KR2012/002728 WO2013035958A1 (en) | 2011-09-07 | 2012-04-10 | One-touch type quick coupler for connecting steel bars |
Publications (1)
Publication Number | Publication Date |
---|---|
US20140147198A1 true US20140147198A1 (en) | 2014-05-29 |
Family
ID=45613732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/127,200 Abandoned US20140147198A1 (en) | 2011-09-07 | 2012-04-10 | One-touch type quick coupler for connecting steel bars |
Country Status (5)
Country | Link |
---|---|
US (1) | US20140147198A1 (en) |
JP (1) | JP2014517176A (en) |
KR (1) | KR101102531B1 (en) |
CN (1) | CN103814182A (en) |
WO (1) | WO2013035958A1 (en) |
Cited By (3)
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CN104328869A (en) * | 2014-11-13 | 2015-02-04 | 宁波建工股份有限公司 | Anchoring type connecting device for steel bar wedge cone and connecting method thereof |
US9410322B1 (en) * | 2015-04-20 | 2016-08-09 | Beijing University Of Technology | Damping splice sleeve |
US11293182B2 (en) | 2016-09-12 | 2022-04-05 | Coupler Solutions Limited | Coupling device, associated parts and a method of use thereof |
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KR101259959B1 (en) * | 2012-07-30 | 2013-05-02 | 인제대학교 산학협력단 | Fire-resistant wedge type one-touch quick-coupler for reinforcing bar splice |
CN104831869A (en) * | 2015-04-13 | 2015-08-12 | 吴方华 | Semi grouting bush |
KR101827163B1 (en) * | 2016-10-25 | 2018-03-22 | 주식회사 동신 | Manufacturing method of coupler for connecting reinforcing rod |
KR101827162B1 (en) * | 2016-10-25 | 2018-02-07 | 주식회사 동신 | Coupler for connecting reinforcing rod |
KR101768816B1 (en) | 2016-10-25 | 2017-08-17 | 주식회사 동신 | Coupler for connecting reinforcing rod |
KR101768819B1 (en) | 2016-12-14 | 2017-08-30 | 주식회사 동신 | Coupler for connecting between sprial reinforcing rod and deformed reinforcing rod |
KR101827175B1 (en) * | 2016-12-14 | 2018-02-07 | 주식회사 동신 | Coupler for connecting steel wire |
KR101768820B1 (en) | 2016-12-14 | 2017-08-17 | 주식회사 동신 | Method for manufacturing coupler to connect between sprial reinforcing rod and deformed reinforcing rod |
KR101857586B1 (en) | 2017-08-01 | 2018-05-15 | 주식회사 동신 | Coupler for connecting reinforcing rod |
KR101847354B1 (en) * | 2017-09-13 | 2018-05-28 | 최영완 | Manufacturing Method of coupler for connecting iron rod |
KR101951882B1 (en) * | 2018-06-08 | 2019-02-25 | 주식회사 알오씨 | One-touch quick coupler for connecting reinforcing bar |
KR101942993B1 (en) * | 2018-08-06 | 2019-04-17 | 주식회사 금화 | One-touch coupler unit for re-pressurized steel bars |
KR102278115B1 (en) | 2019-10-30 | 2021-07-15 | 이은기 | Steel reinforcing bar coupler with detachable lock key unit |
KR102256914B1 (en) | 2020-09-01 | 2021-05-27 | 이은기 | Lock key unit holder of steel reinforcing bar coupler |
KR102481775B1 (en) * | 2021-10-22 | 2022-12-26 | 홍찬윤 | Steel bar coupler and coupling method thereof |
KR20230119790A (en) | 2022-02-08 | 2023-08-16 | 이은기 | Rebar coupler having a fixed key module |
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- 2012-04-10 US US14/127,200 patent/US20140147198A1/en not_active Abandoned
- 2012-04-10 CN CN201280036602.1A patent/CN103814182A/en active Pending
- 2012-04-10 WO PCT/KR2012/002728 patent/WO2013035958A1/en active Application Filing
- 2012-04-10 JP JP2014516885A patent/JP2014517176A/en active Pending
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US7299865B1 (en) * | 2004-09-01 | 2007-11-27 | Jason Kocher | Lift-out device for pitless well adapters |
US7686235B2 (en) * | 2004-10-26 | 2010-03-30 | Roberts James C | Check valve assembly for controlling the flow of pressurized fluids |
US20100003074A1 (en) * | 2006-12-21 | 2010-01-07 | Baro Construction Key-Technology Co., Ltd. | Connecting structure of steel bar |
US20100253074A1 (en) * | 2007-11-11 | 2010-10-07 | Plassim Fittins Ltd. | Grip ring for fitting |
KR100973437B1 (en) * | 2010-04-22 | 2010-08-02 | 거성 이.엔.지 주식회사 | One-touch type steel reinforcement coupler for concrete construction |
US8474490B1 (en) * | 2011-02-25 | 2013-07-02 | Juan M. Ibarra | Slip brass nipple and associated method |
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CN104328869A (en) * | 2014-11-13 | 2015-02-04 | 宁波建工股份有限公司 | Anchoring type connecting device for steel bar wedge cone and connecting method thereof |
US9410322B1 (en) * | 2015-04-20 | 2016-08-09 | Beijing University Of Technology | Damping splice sleeve |
US11293182B2 (en) | 2016-09-12 | 2022-04-05 | Coupler Solutions Limited | Coupling device, associated parts and a method of use thereof |
US11332935B2 (en) | 2016-09-12 | 2022-05-17 | Coupler Solutions Limited | Coupling device, associated parts and a method of use thereof |
US11773595B2 (en) | 2016-09-12 | 2023-10-03 | Coupler Solutions Limited | Coupling device, associated parts and a method of use thereof |
Also Published As
Publication number | Publication date |
---|---|
JP2014517176A (en) | 2014-07-17 |
KR101102531B1 (en) | 2012-01-03 |
CN103814182A (en) | 2014-05-21 |
WO2013035958A1 (en) | 2013-03-14 |
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