WO2003102330A1 - Improved in scaffold connections - Google Patents
Improved in scaffold connections Download PDFInfo
- Publication number
- WO2003102330A1 WO2003102330A1 PCT/IN2002/000128 IN0200128W WO03102330A1 WO 2003102330 A1 WO2003102330 A1 WO 2003102330A1 IN 0200128 W IN0200128 W IN 0200128W WO 03102330 A1 WO03102330 A1 WO 03102330A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- circular cavity
- scaffold
- vertical
- fastening connector
- opening
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G7/00—Connections between parts of the scaffold
- E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
- E04G7/302—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members
- E04G7/306—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are fixed at several bars or members to connect
- E04G7/307—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are fixed at several bars or members to connect with tying means for connecting the bars or members
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G7/00—Connections between parts of the scaffold
- E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
- E04G7/302—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members
- E04G7/303—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are only fixed at one of the bars or members to connect
- E04G7/304—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are only fixed at one of the bars or members to connect with tying means for connecting the bars or members
Definitions
- This invention generally, relates to improvements in connecting means of scaffolding members of scaffolding structures. Scaffolding structures are rected by connecting individual horizontal and vertical scaffold members at an angle to one another and this invention concerns improvements in connecting means of scaffold members to achieve improved and safe scaffold connections.
- connection means are being used to erect and secure scaffold structures.
- Most commonly connections, between vertical scaffold members are achieved by using, for example, a brace which may be a rigid tube of a certain length.
- the brace assumes the role of a horizontal scaffold member.
- some means of a fastener part is provided at each end of the brace.
- the fastener part at the end of the brace then secures a joint at some point on the vertical scaffold member having means to accept the fastener part of the brace, thereby achieving a connection.
- the fastener part at the end of the brace for example, maybe in the form of a wedge, whereby the connection between the horizontal brace and the vertical member is secured by s mQ type of a wedge fixing arrangement.
- a receptacle means is provided on the vertical scaffold member.
- the vertical scaffold member has a number of receptacles each receptacle occupying a position equidistant from each other along the vertical length of the vertical scaffold member.
- the wedge part of the brace member is placed in the receptacle of the vertical scaffold member and driven in, so that it is firmly in place to secure a connection. In order to remove the connection the wedge must be hammered out.
- Prior Art also reveals other types Of connecting means in use, such as clamps, couplers, spigot and bolts, expanding joints and pin type assemblies. But such connecting means usually employ loose parts which may disengage or get misplaced. It -.-is also commonly observed that two or more such parts are used in a combination to achieve a connection and scaffold users are forced to maintain higher stock levels of these parts. Besides, using a combination of two or more parts, to achieve connections, i's time consuming and labour intensive.
- U.S. Patent Number 5,713,687 figure 3 illustrates a loose insertable type wedge.
- safety Standards prevailing in load bearing scaffolding structures using certain connecting means of scaffold members. Safety Institutions in many advanced countries have recently introduced more stringent safety standards for using scaffolding structures and these Standards are strictly monitored.
- an improved scaffold connection comprising an attachment member formed from a tube held in position by plates and fixed attached to a vertical scaffold member, a fastening connector comprising a front hook portion, a rear shank portion, a top and bottom side and sides, fixed attached to a horizontal scaffold member; fastening connector has a horizontal circular cavity at its lower side which houses a control unit; control unit comprises of a compression spring, a cylindrical piston with side lever rods and a A fastening connector 7 is attached to a horizontal scaffold member 8 by welding.
- Fastening connector 7 comprises a front hook portion 9, a rear shank portion 10, a top side 11, a bottom side 12 and sides 13.
- the opening of the front hook portion 9 is rounded in shape so as , to fit around tube 4 having the same radius.
- Fastening connector 7 contains a horizontal circular cavity 14 extending through nearer the bottom side 12 of fastening connector 7 and opening out to lower rear end of front hook portion 9.
- the horizontal circular cavity 14 houses a control unit 15 comprising of a combination of a compression spring member 16, a cylindrical piston 17 having a first ⁇ U' shaped notch 18 and a second *U' shaped notch 19, lever rods- 20 and 21 ( refer to FIG.4) and a front catch member 22.
- the length of the compression spring 16 is of such a 'dimension that the compression spring 16 is always in a state of compression irrespective of any position which the control unit 15 may occupy inside the horizontal circular cavity 14.
- Catch member 22 is provided with a curved bevelled surface on its front side 23 so as to have a radius similar to front hook portion 9.
- a vertical circular cavity 24 is suitably positioned above the horizontal circular cavity 14.
- the bottom end of the vertical circular cavity 24 has an opening which allows access from the vertical circular cavity 24 to the horizontal circular cavity 14.
- the upper end of the vertical cavity 24 extends upwards to top side 11 where it is stepped so as to form a larger cylindrical opening 25 than the diameter of the vertical cavity 24.
- the vertical circular cavity 24 houses a lock mechanism 26 which is formed from a cylindrical rod 27, a lower cylindrical end 28, an upper cylindrical end 29, a compression spring 30 and a ring member 31 fixed attached to upper cylindrical end 29.
- a cap plug 32 has a circular hole 33 around its centre.
- the dimensions of the circular hole 33 are so calculated so as permit a slide fit entry of cylindrical end 29 and allow the cylindrical end 29 to move into and outwards through circular hole 33 and exit out of the top end of cap plug 32.
- side 13 of the fastening connector 7 has an oval shaped hollow opening which is continuously hollow in a horizontal direction upto the end opposite of si'de 13.
- Female threads are tapped through the sides of cylindrical piston 17, on both sides 13.
- Lever rods 20 and 21 are male threaded at one end. The threaded end of lever rod 20 passes through the oval hollow opening 34 and is screwed to the female tapped opening in cylindrical piston 17.
- lever rod 21 is fixed to the cylindrical piston 17 from opposite side 13.
- Lever rods 20/21 together, move forward and backward horizontally through oval opening 34, such movement being limited between point 100 and 200 located at each end of the oval hollow opening 34.
- FIG.3 of the accompanying drawings shows the connection 1 in an unlocked position where lever rods 20/21 occupy a position at point 100 of the oval hollow opening 34 and lower cylindrical end 28 occupies a position inside second *U' notch 19, In this unlocked position of the connection 1, the compression spring 16 is in a highly compressed state.
- FIG. 2 shows the connection 1 in a locked position.
- the front hook portion 9 of the fastening connector 7 must be placed around tube 4 of the attachment member 2.
- Ring member 31, of the lock mechanism 26, is lifted upwards causing lower cylindrical end 28 to move completely out of second U' notch 19 and releasing cylindrical piston 17.
- the forward action of the compression spring 16 urges the cylindrical piston 17 forwards to permit catch member 22 to engage tube 4 of the attachment member 2.
- Ring 31 is simultaneously released causing compression spring 30 to exert a downward vertical force on the lower cylindrical end 28 which moves to a position inside first 'U' notch 18.
- Lever rods 20/21 now occupy a position at point 200 of the oval hollow opening 34.
- ring member 31 In order to remove the connection, ring member 31 must be lifted upwards -and lever rods 20 and 21 must be retracted to point 200 of the oval hollow opening. Ring member 31 is then released allowing compression spring 30 to force lower cylindrical end 28 to move inside second ⁇ U' notch 19 to prevent any movement of cylindrical piston 17. The fastening connector 7 can now be lifted off.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
An improved scaffold connection is provided comprising an attachment member (2) formed from a tube held by two plates (5, 6) and attached to vertical scaffold member (3); a fastening connector (7) having front hook portion (9), rear shank portion (10), top (11), bottom (12), sides (12, 13) and fixed to horizontal scaffold member; fastening connector (7) having a lower horizontal circular cavity opening (14) to lower end of front hook portion (9) and houses a rear compression spring (16), a cylindrical piston (17) having lever rods extending at right angles from its sides and a front catch member with a bevelled surface curved to the same radius as the opening of the front hook portion (9), horizontal circular cavity (14) is connected to a vertical circular cavity (24), vertical circular cavity (24) houses a lock mechanism formed from a compression spring (30), a cylindrical rod (27) having a lower end and an upper end having a ring (31); top opening of upper vertical circular cavity is sealed by a cap plug (32).
Description
IMPROVEMENTS IN SCAFFOLD CONNECTIONS
BACKGROUND OF THE INVENTION
1. Field of the Invention This invention generally, relates to improvements in connecting means of scaffolding members of scaffolding structures. Scaffolding structures are rected by connecting individual horizontal and vertical scaffold members at an angle to one another and this invention concerns improvements in connecting means of scaffold members to achieve improved and safe scaffold connections.
2. Prior Art Many types of connecting means are being used to erect and secure scaffold structures. Most commonly connections, between vertical scaffold members are achieved by using, for example, a brace which may be a rigid tube of a certain length. The brace assumes the role of a horizontal scaffold member. At each end of the brace some means of a fastener part is provided. The fastener part at the end of the brace then secures a joint at some point on the vertical scaffold member having means to accept the fastener part of the brace, thereby achieving a connection.
Because of the need for an effective connecting arrangement the fastener part at the end of the brace, for example, maybe in the form of a wedge, whereby the connection between the horizontal brace and the vertical member is secured by s mQ type of a wedge fixing arrangement. Λt some point; on the vertical scaffold member a receptacle means is provided. Generally, the vertical scaffold member has a number of receptacles each receptacle occupying a position equidistant from each other along the vertical length of the vertical scaffold member.
The wedge part of the brace member is placed in the receptacle of the vertical scaffold member and driven in, so that it is firmly in place to secure a connection. In order to remove the connection the wedge must be hammered out.
Prior Art also reveals other types Of connecting means in use, such as clamps, couplers, spigot and bolts, expanding joints and pin type assemblies. But such connecting means usually employ loose parts which may disengage or get misplaced. It -.-is also commonly observed that two or more such parts are used in a combination to achieve a connection and scaffold users are forced to maintain higher stock levels of these parts. Besides, using a combination of two or more parts, to achieve connections, i's time consuming and labour intensive. One example of a loose connecting means can be seen in U.S. Patent Number 5,713,687 figure 3, which illustrates a loose insertable type wedge. Moreover, there are growing concerns about safety Standards prevailing in load bearing scaffolding structures using certain connecting means of scaffold members. Safety Institutions in many advanced countries have recently introduced more stringent safety standards for using scaffolding structures and these Standards are strictly monitored.
Another important concern with prior art in connecting means of scaffold members is the need for a back-up, failsafe locking mechanism which could prevent connections from disengaging, due to unexpected conditions and forces which occur on working sites.
SUMMARY OF THE INVENTION
Therefore, it is the objective of this Invention to provide an improved connecting means which displays an instantaneous fastening function in connecting scaffold members, more accurately described further, in the Detailed description of the Embodiment of the Invention.
It is another objective of this invention to provide an improved connecting means which accomplishes the task of connecting scaffold members without using any additional loose parts or a combination of two or more loose parts to complete the connecting means.
It is a further objective of this invention to provide an improved connecting means of scaffolding members by providing a backup of a fail-safe locking mechanism, to prevent connections between scaffold members from disengaging due to the occurrence of unexpected conditions and forces on working sites which may damage the scaffold structure and cause accidents.
It is another further objective of this invention to provide an improved connecting means which provides a speedier connecting function of scaffold members during erection and dismantling, resulting in some savings in labour costs.
Thus the present Invention of an improved scaffold connection is provided, comprising an attachment member formed from a tube held in position by plates and fixed attached to a vertical scaffold member, a fastening connector comprising a front hook portion, a rear shank portion, a top and bottom side and sides, fixed attached to a horizontal scaffold member; fastening connector has a horizontal circular cavity at its lower side which houses a control unit; control unit comprises of a compression spring, a cylindrical piston with side lever rods and a
A fastening connector 7 is attached to a horizontal scaffold member 8 by welding. Fastening connector 7 comprises a front hook portion 9, a rear shank portion 10, a top side 11, a bottom side 12 and sides 13. The opening of the front hook portion 9 is rounded in shape so as , to fit around tube 4 having the same radius. Fastening connector 7 contains a horizontal circular cavity 14 extending through nearer the bottom side 12 of fastening connector 7 and opening out to lower rear end of front hook portion 9. The horizontal circular cavity 14 houses a control unit 15 comprising of a combination of a compression spring member 16, a cylindrical piston 17 having a first λU' shaped notch 18 and a second *U' shaped notch 19, lever rods- 20 and 21 ( refer to FIG.4) and a front catch member 22. Preferably the length of the compression spring 16 is of such a 'dimension that the compression spring 16 is always in a state of compression irrespective of any position which the control unit 15 may occupy inside the horizontal circular cavity 14. Catch member 22 is provided with a curved bevelled surface on its front side 23 so as to have a radius similar to front hook portion 9.
A vertical circular cavity 24 is suitably positioned above the horizontal circular cavity 14., The bottom end of the vertical circular cavity 24 has an opening which allows access from the vertical circular cavity 24 to the horizontal circular cavity 14. The upper end of the vertical cavity 24 extends upwards to top side 11 where it is stepped so as to form a larger cylindrical opening 25 than the diameter of the vertical cavity 24. The vertical circular cavity 24 houses a lock mechanism 26 which is formed from a cylindrical rod 27, a lower cylindrical end 28, an upper cylindrical end 29, a compression spring 30 and a ring member 31 fixed attached to upper cylindrical end 29. A cap plug 32 has a circular hole 33 around its centre.
The dimensions of the circular hole 33 are so calculated so as permit a slide fit entry of cylindrical end 29 and allow the cylindrical end 29 to move into and outwards through circular hole 33 and exit out of the top end of cap plug 32. Once the lock mechanism 26 is assembled along with its members 27,28,29 and 30 inside the vertical circular cavity 24, the cap plug 32 is fitted and sealed permanently. The ring member 31 is next fitted to the protruding end of cylindrical end 29 to complete the lock mechanism assembly.
Referring to FIGS. 1,2 and 4 of the accompanying drawings, side 13 of the fastening connector 7 has an oval shaped hollow opening which is continuously hollow in a horizontal direction upto the end opposite of si'de 13. Female threads are tapped through the sides of cylindrical piston 17, on both sides 13. Lever rods 20 and 21 are male threaded at one end. The threaded end of lever rod 20 passes through the oval hollow opening 34 and is screwed to the female tapped opening in cylindrical piston 17. Similarly lever rod 21 is fixed to the cylindrical piston 17 from opposite side 13. Lever rods 20/21, together, move forward and backward horizontally through oval opening 34, such movement being limited between point 100 and 200 located at each end of the oval hollow opening 34. The cylindrical piston 17 including the catch member 22 also move similarly backward and forward horizontally, travelling the same distance as covered by lever rods 20/21 respectively. This limited movement of lever rods 20/21 prevent the control unit 15 from slipping out of or leaving the horizontal circular cavity 14 so that control unit 15 is permanently housed in the horizontal circular cavity 14.
FIG.3 of the accompanying drawings shows the connection 1 in an unlocked position where lever rods 20/21 occupy a position at point 100 of the oval hollow opening 34 and lower cylindrical end 28 occupies a position inside second *U' notch 19, In this unlocked position of the connection 1, the compression spring 16 is in a highly compressed state.
FIG. 2 shows the connection 1 in a locked position. In order to lock the connection 1, the front hook portion 9 of the fastening connector 7 must be placed around tube 4 of the attachment member 2. Ring member 31, of the lock mechanism 26, is lifted upwards causing lower cylindrical end 28 to move completely out of second U' notch 19 and releasing cylindrical piston 17. The forward action of the compression spring 16 urges the cylindrical piston 17 forwards to permit catch member 22 to engage tube 4 of the attachment member 2. Ring 31 is simultaneously released causing compression spring 30 to exert a downward vertical force on the lower cylindrical end 28 which moves to a position inside first 'U' notch 18. Lever rods 20/21 now occupy a position at point 200 of the oval hollow opening 34. Due to the downward vertical force exerted by compression spring 30 lower cylindrical end 28 cannot move out of first AU' notch 18 thereby eliminating any movement of the cylindrical piston 17. Lever rods 20 and 21 cannot be retracted unless ring member 31 is pulled upwards to allow lower cylindrical end 28 to move completely out of first U' notch 18 and release cylindrical piston 17. As can be seen that in addition to the locking action of the catch member.18 engaging tube 4, an additional backup of a locking device is provided by the action of compression spring 30 forcing lower cylindrical end 28 into first AU' notch 18. This arrangement provides a failsafe locking mechanism of the connection 1 and catch member 22 will not disengage tube 4 of attachment member 2.
8
The strong horizontal force exerted by compression spring 16, the broad engagement of the opening of the front hook portion 9 with tube member 4 and the broad front bevelled surface of catch member 22 provides for a positive locking of the connection 1 between the vertical scaffold member 3 and the horizontal scaffold member 8 which are firmly and rigidly connected to one another.
In order to remove the connection, ring member 31 must be lifted upwards -and lever rods 20 and 21 must be retracted to point 200 of the oval hollow opening. Ring member 31 is then released allowing compression spring 30 to force lower cylindrical end 28 to move inside second ΛU' notch 19 to prevent any movement of cylindrical piston 17. The fastening connector 7 can now be lifted off.
Thus an improved scaffold connection is provided which quickly and securely locks horizontal scaffold members to vertical scaffold members while incorporating an additional safety factor of a backup of a failsafe locking mechanism. This unique application allows more safe and efficient use of scaffolding structures.
Claims
1. An improved scaffold connection comprising an attachment member formed from a tube held in position by two plates and fixed attached to a vertical scaffold member preferably by welding.
An improved scaffold connection, as claimed in claim 1, further comprising a fastening connector fixed attached to a horizontal scaffold member; fastening connector comprises of a front hook portion, a rear shank portion, a top side, a bottom side and sides; opening of front hook portion is rounded in shape so as to fit around a tube of the attachment member having the same radius; fastening connector has a horizontal circular cavity extending through nearer the bottom side of fastening connector and opening out to lower rear end of front hook portion; said h rizontal circular cavity houses a control unit formed from a rear compression spring member, front face of compression spring rests against the rear face of a cylindrical piston having a first U' notch, a second *U' notch, lever rods positioned a,t right angles to the cylindrical piston on each side and a catch member, said catch member is fixed to the front face of the cylindrical piston; front end of catch member has a curved bevelled surface having a radius similar to the circular opening of the front hook portion; said curved bevelled radius of the catch member having a broad surface to captivate the tube of the attachment member; side of the fastening connector has • an oval shaped hollow opening which is continuously hollow upto the opposite side of front side; said lever rods on both sides pass through the oval hollow opening and are screw fixed to the side of the cylindrical piston, said lever rods move horizontally forward and backward between the horizontal limits of the oval hollow opening. 10
3. An improved scaffold connection as 'claimed in claim 2 wherein the said fastening connector is provided with a vertical circular cavity suitably positioned above the horizontal circular cavity; vertical circular cavity has an opening at its lower end which allows access to the horizontal circular cavity; said vertical circular cavity houses a lock mechanism which acts as a backup failsafe locking mechanism; said locking mechanism is formed from a cylindrical rod having a lower cylindrical end, an upper cylindrical end which protrudes out of the top side of fastening connector, a compression spring and a ring member which is fixed to the upper cylindrical end; said vertical circular cavity is sealed at its top side by a cap plug which has a circular hole around its centre; the dimensions of the said circular hole are so calculated so as to allow a slide fit entry of the upper cylindrical end into and further protrude outwards of the top side of the cap plug; said vertical circular cavity is sealed by the cap plug after the lock mechanism is assembled inside the vertical circular cavity; said ring member is then fixed to the protruding part of the upper cylindrical end of the cylindrical rod.
An improved scaffold connection as claimed in claims 1 to 3 wherein the said fastening connector when in a disengaged position, the lower cylindrical end of the said lock mechanism occupies a . position inside the second XU' notch of the said cylindrical piston of the control unit; lever rods emerging horizontally from each side of cylindrical piston occupy a position at the rear end of the ovel hollow opening of the . fastening connector. 11
An improved scaffold connection as claimed in claims 1 to 4 where in order to lock the connection 1 said front hook portion of the fastening connector is placed on the tube of attachment member and said ring member of lock mechanism, in the vertical circular cavity, is pulled upwards causing lower cylindrical end of lock mechanism to move completely out from second ΛU' notch of the said cylindrical piston; spring member housed in horizontal circular cavity urges the said cylindrical piston forward so that said catch member engages tube of attachment member; said ring member is released so that said lower cylindrical end of lock mechanism in the vertical circular cavity then occupies a position inside first *U' notch; said lever rods extending horizontally from each side of cylindrical piston occupy a position at the front end of the oval hollow opening of the fastener connector, said lever rods cannot be retracted unless top ring member is pulled upwards; said lock mechanism housed in the vertical circular cavity incorporates a back-up of a failsafe lock mechanism, in addition to the locking action provided by the said front hook portion and the curved bevelled front surface of the said catch member to engage said tube of attachment; the broad engagement of the opening of the front hook portion of fastening connector around the upper circumference of tube of attachment member and said broad engagement of curved bevelled front surface of catch member engaging said tube sufficiently along its lower circumference along with the failsafe locking mechanism provides an improved connection between a horizontal scaffold member and a- vertical scaffold member.
An improved scaffold connection accordiny to claims 1 to 5 whereby an improved scaffold connection is provided which quickly and aecuroly locks hori κoπl ..1 -scaffold members to vertical scaffold members; the connection 1 also incorporates an additional safety of a failsafe locking mechanism; such unique application allows more safe and efficient use of scaffolding structures.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IN2002/000128 WO2003102330A1 (en) | 2002-06-04 | 2002-06-04 | Improved in scaffold connections |
| AU2002319895A AU2002319895A1 (en) | 2002-06-04 | 2002-06-04 | Improved in scaffold connections |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IN2002/000128 WO2003102330A1 (en) | 2002-06-04 | 2002-06-04 | Improved in scaffold connections |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003102330A1 true WO2003102330A1 (en) | 2003-12-11 |
Family
ID=29596530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IN2002/000128 WO2003102330A1 (en) | 2002-06-04 | 2002-06-04 | Improved in scaffold connections |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU2002319895A1 (en) |
| WO (1) | WO2003102330A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2224899A1 (en) * | 2004-10-20 | 2005-03-01 | Ingenieria De Encofrados Y Servicios, S.L. | Side closure for facade scaffolding |
| WO2006000760A1 (en) * | 2004-06-23 | 2006-01-05 | Ultraframe (Uk) Limited | Improvements in and relating to construction of conservatory roofs |
| GB2433958A (en) * | 2006-01-07 | 2007-07-11 | John Francis Travers | Locking apparatus for scaffolding component |
| CN101672103B (en) * | 2009-09-22 | 2011-04-13 | 贺昌义 | Attached support structure |
| KR101399776B1 (en) | 2007-08-08 | 2014-05-26 | 가부시키가이샤 라릿크 | A hook on traverse for scaffolding |
| US10119279B2 (en) * | 2014-06-02 | 2018-11-06 | Scafom Holding B.V. | Scaffolding coupler, standard and scaffolding system |
| CN112963415A (en) * | 2021-03-12 | 2021-06-15 | 北京韬盛科技发展有限公司 | Rotary self-locking connecting device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2218146A (en) * | 1988-04-15 | 1989-11-08 | Ability Int | A locking hook |
-
2002
- 2002-06-04 WO PCT/IN2002/000128 patent/WO2003102330A1/en not_active Application Discontinuation
- 2002-06-04 AU AU2002319895A patent/AU2002319895A1/en not_active Abandoned
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2218146A (en) * | 1988-04-15 | 1989-11-08 | Ability Int | A locking hook |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006000760A1 (en) * | 2004-06-23 | 2006-01-05 | Ultraframe (Uk) Limited | Improvements in and relating to construction of conservatory roofs |
| GB2430210A (en) * | 2004-06-23 | 2007-03-21 | Ultraframe Uk Ltd | Improvements in and relating to construction of conservatory roofs |
| GB2430210B (en) * | 2004-06-23 | 2009-09-23 | Ultraframe Uk Ltd | Improvements in and relating to construction of conservatory roofs |
| ES2224899A1 (en) * | 2004-10-20 | 2005-03-01 | Ingenieria De Encofrados Y Servicios, S.L. | Side closure for facade scaffolding |
| EP1650377A3 (en) * | 2004-10-20 | 2007-05-23 | Ingenieria de Encofrados y Servicios, S.L. | Side closure for facade scaffolding |
| GB2433958A (en) * | 2006-01-07 | 2007-07-11 | John Francis Travers | Locking apparatus for scaffolding component |
| KR101399776B1 (en) | 2007-08-08 | 2014-05-26 | 가부시키가이샤 라릿크 | A hook on traverse for scaffolding |
| CN101672103B (en) * | 2009-09-22 | 2011-04-13 | 贺昌义 | Attached support structure |
| US10119279B2 (en) * | 2014-06-02 | 2018-11-06 | Scafom Holding B.V. | Scaffolding coupler, standard and scaffolding system |
| CN112963415A (en) * | 2021-03-12 | 2021-06-15 | 北京韬盛科技发展有限公司 | Rotary self-locking connecting device |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2002319895A1 (en) | 2003-12-19 |
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