CA1270661A - Reinforcing bar support - Google Patents
Reinforcing bar supportInfo
- Publication number
- CA1270661A CA1270661A CA000596942A CA596942A CA1270661A CA 1270661 A CA1270661 A CA 1270661A CA 000596942 A CA000596942 A CA 000596942A CA 596942 A CA596942 A CA 596942A CA 1270661 A CA1270661 A CA 1270661A
- Authority
- CA
- Canada
- Prior art keywords
- reinforcing bar
- legs
- leg
- base
- support
- 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 - Fee Related
Links
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
- E04C5/20—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups of material other than metal or with only additional metal parts, e.g. concrete or plastics spacers with metal binding wires
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
Title: REINFORCING BAR SUPPORT
Inventor: Theodoros Athanasiou ABSTRACT
A reinforcing bar support capable of supporting upper and lower reinforcing bars each at a different distance from an underlying surface. The reinforcing bar support has upper and lower supporting members each having a socket to receive opposite ends of a spacing rod of a predetermined length, to support the upper supporting member above the lower supporting member. The upper supporting member has a channel for receiving an upper reinforcing bar.
The lower supporting member has three legs each having a recess to support the lower reinforcing bar. The legs are of different heights so that the latter reinforcing bar may be supported at different distances from the underlying surface determined by which recess it is placed in.
Inventor: Theodoros Athanasiou ABSTRACT
A reinforcing bar support capable of supporting upper and lower reinforcing bars each at a different distance from an underlying surface. The reinforcing bar support has upper and lower supporting members each having a socket to receive opposite ends of a spacing rod of a predetermined length, to support the upper supporting member above the lower supporting member. The upper supporting member has a channel for receiving an upper reinforcing bar.
The lower supporting member has three legs each having a recess to support the lower reinforcing bar. The legs are of different heights so that the latter reinforcing bar may be supported at different distances from the underlying surface determined by which recess it is placed in.
Description
~270~
FIF.LD OF INVENTION
This invention relates to a device for supporting a pair of reinforcing bars, each at a different predetermined distance from an underlying surface.
BACKGROUND
When a reinforced concrete floor or like structure is being poured, it is frequently necessary to support two layers of reinforcing bars at different depths in the concrete which is being poured. The reinforcing bars of the lower layer are supported a first distance above the underlying surface. The reinforcing bars of the upper layer are supported a second distance above the underlying surface so as to be a given distance below the surface of the poured concrete.
The first and second distances will depend on a number of factors and may vary not only from installation to installation but also at different locations in the same installation and even in thge same concrete floor.
A number of devices have been devised for supporting reinforcing bars at the desired heights. Some of these devices only provide support at one height, in which case two devices would be needed to support two layers of reinforcing bars at different heights. Others of these devices can support two reinforcing bars, each at a different height.
~d ~,~
1~70661 Some of the prior supporting devices which support one layer of reinforcing bars are generally circular in plan and have recesses of different depths in their opposed faces. These can support reinforcing bars at only two different but closely spaced levels. Others of those devices additionally have recesses of different depths running in different directions across each end face. By varying the orientation of these devices it is possible to vary the height at which they support a single layer of reinforcing rods. However, they are unstable. In addition, while these devices have the advantage of being able to provide various heights of support using one device, as they can only support one layer of reinforcing bars, a second set of such devices is required to support a second layer of reinforcing bars. This requires a significantly greater number of such supporting devices than would be required if each device would support two reinforcing bars at different heights.
A previous device which can support two layers of reinforcing bars at different heights comprises a base portion having a first height and a generally inverted U-shaped upper portion, the opposed ends of which are insertable into recesses formed in the base portion. In use, one reinforcing bar is placed on the base portion at the first height, the U-shaped portion is then mounted over the first reinforcing bar and the opposed ends of the U-shaped portion inserted into the recesses in the base lZ706~1 portion. A second reinforcing bar is then placed on the transverse part of the U-shaped portion at a second height and located thereon by a suitably shaped recess formed in the U-shaped portion. While this latter device can support two reinforcing bars at different heights, neither of the two heights is variable. Accordingly, different base portions and U-shaped portions are required for each different height desired. In addition, forming the U-shaped portion with its recess is costly.
BRIEF SUMMARY OF INVENTION
Accordingly, it is an object of the present invention to provide a device for supporting reinforcing bars which is both versatile and inexpensive. In one of its aspects, the present invention provides a device for supporting reinforcing bars comprising:
a plurality of legs having inner ends, said inner ends beiny joined together at a generally central location, said legs extending radially outwardly in different directions and each leg terminating in an outer free end, each leg having an upper surface, each upper surface having a recess therein for receiving and supporting a reinforcing bar, each recess being located at a different height from that of the other recesses, so that said device may support a reinforcing bar at different heights depending on which leg said reinforcing bar is placed.
~L~7(36~
Further objects and advantages of the invention will appear from the following description, taken together with the accompanying drawings.
BRIEF DESCRIPTION OF DRAWINGS
Figure 1 is an isometric view of a reinforcing bar support according to the present invention; and Figure 2 is an isometric view of a modified reinforcing bar support according to the invention.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT
Reference is first made to Figure 1, which shows a reinforcing bar support according to the invention and identified generally at 10. The reinforcing bar support 10 has a lower supporting member 12 and an upper supporting member 14.
lS The lower supporting member 12 has a generally upright central cylindrical column 16 definingg a vertical first socket 18. This socket 18 has an upper opening 20, as shown, and is closed at its bottom end. Three generally rectangular legs, 22, 24, and 26 have inner ends joined to the column 16 and extend generally radially away in different directions from the column 16. The legs 22, 24 and 26 terminate in free outer ends 22a, 24a, 26a and have lower surfaces 28, 30 and 32 respectively, which have their lowermost portions located in a common plane. The surfaces 28, 30, 32 therefore form a base which supports the device 0~6~L
on a supporting surface such as a sheet of plywood on which the concrete is to be poured. The socket 18 has an axis 17 generally perpendicular to the plane of such supporting surface.
The legs 22, 24 and 26 have respective concave or U-shaped recesses, 34, 36 and 38 extending across their upper surfaces. The lowermost portions of the recesses, 34, 36 and 38 differ in vertical height above the coplanar lower surfaces 28, 30 and 32 of the legs 22, 24 and 26.
The upper supporting member 14 has a generally cylindrical second socket 40 depending from a head 42. The head 42 has a generally U-shaped channel 44 extending across its upper surface. The second socket 40 has an opening 46 at its lower end, so that the channel 44 and the opening 46 lS face in opposite directions. The second socket 40 has an axis 48. The channel has an axis 50 running therealong. The axes 48 and 50 are generally perpendicular.
The first and second sockets, 16 and 40 respectively, are sized so as to be capable of receiving opposite ends 62 and 64 of a vertical spacing rod 60 extending therebetween. As shown in Figure 1, the ]ower supporting member 12 is supported on its base. The lower supporting member 12 in turn supports the spacing rod 60 in the first socket 16. The spacing rod 60 in turn engages the second socket 40 of the upper supporting member 14 to support the upper supporting member 14 above the lower supporting member 12.
1~7~36~j~
In use, the base of the lower supporting member is placed on a surface and a reinforcing bar shown in dotted lines at 70 is placed in one of the recesses 34, 36 or 38.
The recesses are suitably contoured to receive the side of reinforcing bar. The lower supporting member supports the lower layer of reinforcing bars. The height of the reinforcing bar 70 above the underlying surface, is determined by selecting the appropriate one of the recesses 34, 36 and 38. The reinforcing bar 70 forms part of the lower layer of reinforcing bars. If the lower layer consists of two sets of reinforcing bars at right angles to each other, another reinforcing bar shown in dotted lines at 72 can be laid on top of reinforcing bar 70.
Next, one end 64 of a spacing rod 60 of a suitable length is inserted into the opening 18 of socket 16. The socket 40 of the upper supporting member 14 is then mounted on the end 62 of the spacing rod 60 and another reinforcing bar (not shown) is placed in the channel 44 to extend thereacross. The channel 44 is suitably shaped to receive the side of the second reinforcing bar. The upper supporting member 14 therefore supports a bar from the upper layer of reinforcing bars.
It will be seen that the height of the upper supporting member 14 above the surface underlying the lower supporting member 12 is determined by the length of the spacing rod 60. Accordingly, by selecting spacing rods 60 of different lengths and selecting different ones of the ~70~
recesses 34, 36 and 38 in the lower supporting member 12, the reinforcing bar support 10 can support each of two layers of reinforcing bars at various heights. This of course reduces the inventory of reinforcing bar supports that needs to be carried and reduces tooling costs as the upper and lower supporting members can be common to a variety of applications. Furthermore, if reinforcing bar supports are left over from one job site, there is a much greater likelihood that these will turn out to be useful on the next job site.
To further minimize cost and the number of pieces which need to be inventoried, it is preferred, as shown in Figure 1, that the spacing rod 60 be cut from a reinforcing bar and that the first and second sockets 16 and 40 be sized to receive such a bar. As most construction projects typically have odds and ends of reinforcing bars readily available, spacing bars 60 of suitable height can be cut from these locally on the job site or at any convenient location. Bar of diameter 10 mm or 3/8 inch diameter may typically be used for rod 60.
Various materials can be used -to form -the reinforcing bar support 10. Preferably, the upper and lower supporting members 14 and 12 respectively, are moulded from plastic. Alternatively, these pieces can be manufactured from steel plate and tubing cut to appropriate shapes and welded together.
The legs 22, 24 and 26 of the lower supporting 1~7~)~t.~L
member 12 can be provided with respective openings 75, 76 and 77 through which a wire can be passed to secure the reinforcing bar to the legs. The openings 75, 76 and 77 also permit concrete to pass through the legs to firmly embed the lower supporting member 12 in the concrete and to reduce the likelihood of voids in the concrete surrounding the lower supporting member 12.
As shown in Figure 1, the lower surface 28 has a recess 78 formed therein. The recess 78 is provided so that if desired, a supporting member 12 can be turned upside down and used in place of the upper supporting member 14. This may typically occur on small jobs where a worker has a box of members 12 and no members 14. When member 12 is used upside down as an upper support, a reinforcing bar is simply placed in the recess 78.
It will be appreciated that what has been described is a preferred embodiment of the invention and that variations may be apparent to those skilled in the art both to the materials and structure of the present invention, while staying within the spirit and scope of what is claimed.
For example, the base can be a separate, disc-shaped or rectangular element attaching to the ends 28, 30 and 32. Such an arrangemen-t might be desirable to add stability if, for example, only two legs were used or if it were desired not to attach the legs directly to the socket 16. Further, the lower surfaces 28, 20 and 32 of the legs 1~7(3t~
g 22, 24 and 26 respectively may define a base without the bottom end of socket 16 extending to the plane of the base.
In addition, and as shown in Figure 2, where primed reference numerals indicate parts corresponding to those at Figure 1, the lower end of socket 16' may be attached to a flat base 80 of suitable si~e to provide good stability and the legs 22', 24' and 26' may extend radially from the first socket 16' with their respective lower surfaces 28', 30' and 32' being above the base 80. However, the Figure 2 version is less desirable than the Figure 1 version, e.g. because the legs 22', 24', 26' would have to be made of very strong material to support the reinforcing bars, and because base 80 must be wide enough to avoid tipping.
Although three legs have been shown, there could be four or five legs if desired.
In some cases, only a single layer of reinforcing bars will be needed, and in that case upper member 14 will not be used. In that case the socket in central column 16 can be omitted, or the column 16 itself can be omitted and the legs joined directly to each other. However, the colurnn 16 and its socket are preferred.
FIF.LD OF INVENTION
This invention relates to a device for supporting a pair of reinforcing bars, each at a different predetermined distance from an underlying surface.
BACKGROUND
When a reinforced concrete floor or like structure is being poured, it is frequently necessary to support two layers of reinforcing bars at different depths in the concrete which is being poured. The reinforcing bars of the lower layer are supported a first distance above the underlying surface. The reinforcing bars of the upper layer are supported a second distance above the underlying surface so as to be a given distance below the surface of the poured concrete.
The first and second distances will depend on a number of factors and may vary not only from installation to installation but also at different locations in the same installation and even in thge same concrete floor.
A number of devices have been devised for supporting reinforcing bars at the desired heights. Some of these devices only provide support at one height, in which case two devices would be needed to support two layers of reinforcing bars at different heights. Others of these devices can support two reinforcing bars, each at a different height.
~d ~,~
1~70661 Some of the prior supporting devices which support one layer of reinforcing bars are generally circular in plan and have recesses of different depths in their opposed faces. These can support reinforcing bars at only two different but closely spaced levels. Others of those devices additionally have recesses of different depths running in different directions across each end face. By varying the orientation of these devices it is possible to vary the height at which they support a single layer of reinforcing rods. However, they are unstable. In addition, while these devices have the advantage of being able to provide various heights of support using one device, as they can only support one layer of reinforcing bars, a second set of such devices is required to support a second layer of reinforcing bars. This requires a significantly greater number of such supporting devices than would be required if each device would support two reinforcing bars at different heights.
A previous device which can support two layers of reinforcing bars at different heights comprises a base portion having a first height and a generally inverted U-shaped upper portion, the opposed ends of which are insertable into recesses formed in the base portion. In use, one reinforcing bar is placed on the base portion at the first height, the U-shaped portion is then mounted over the first reinforcing bar and the opposed ends of the U-shaped portion inserted into the recesses in the base lZ706~1 portion. A second reinforcing bar is then placed on the transverse part of the U-shaped portion at a second height and located thereon by a suitably shaped recess formed in the U-shaped portion. While this latter device can support two reinforcing bars at different heights, neither of the two heights is variable. Accordingly, different base portions and U-shaped portions are required for each different height desired. In addition, forming the U-shaped portion with its recess is costly.
BRIEF SUMMARY OF INVENTION
Accordingly, it is an object of the present invention to provide a device for supporting reinforcing bars which is both versatile and inexpensive. In one of its aspects, the present invention provides a device for supporting reinforcing bars comprising:
a plurality of legs having inner ends, said inner ends beiny joined together at a generally central location, said legs extending radially outwardly in different directions and each leg terminating in an outer free end, each leg having an upper surface, each upper surface having a recess therein for receiving and supporting a reinforcing bar, each recess being located at a different height from that of the other recesses, so that said device may support a reinforcing bar at different heights depending on which leg said reinforcing bar is placed.
~L~7(36~
Further objects and advantages of the invention will appear from the following description, taken together with the accompanying drawings.
BRIEF DESCRIPTION OF DRAWINGS
Figure 1 is an isometric view of a reinforcing bar support according to the present invention; and Figure 2 is an isometric view of a modified reinforcing bar support according to the invention.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT
Reference is first made to Figure 1, which shows a reinforcing bar support according to the invention and identified generally at 10. The reinforcing bar support 10 has a lower supporting member 12 and an upper supporting member 14.
lS The lower supporting member 12 has a generally upright central cylindrical column 16 definingg a vertical first socket 18. This socket 18 has an upper opening 20, as shown, and is closed at its bottom end. Three generally rectangular legs, 22, 24, and 26 have inner ends joined to the column 16 and extend generally radially away in different directions from the column 16. The legs 22, 24 and 26 terminate in free outer ends 22a, 24a, 26a and have lower surfaces 28, 30 and 32 respectively, which have their lowermost portions located in a common plane. The surfaces 28, 30, 32 therefore form a base which supports the device 0~6~L
on a supporting surface such as a sheet of plywood on which the concrete is to be poured. The socket 18 has an axis 17 generally perpendicular to the plane of such supporting surface.
The legs 22, 24 and 26 have respective concave or U-shaped recesses, 34, 36 and 38 extending across their upper surfaces. The lowermost portions of the recesses, 34, 36 and 38 differ in vertical height above the coplanar lower surfaces 28, 30 and 32 of the legs 22, 24 and 26.
The upper supporting member 14 has a generally cylindrical second socket 40 depending from a head 42. The head 42 has a generally U-shaped channel 44 extending across its upper surface. The second socket 40 has an opening 46 at its lower end, so that the channel 44 and the opening 46 lS face in opposite directions. The second socket 40 has an axis 48. The channel has an axis 50 running therealong. The axes 48 and 50 are generally perpendicular.
The first and second sockets, 16 and 40 respectively, are sized so as to be capable of receiving opposite ends 62 and 64 of a vertical spacing rod 60 extending therebetween. As shown in Figure 1, the ]ower supporting member 12 is supported on its base. The lower supporting member 12 in turn supports the spacing rod 60 in the first socket 16. The spacing rod 60 in turn engages the second socket 40 of the upper supporting member 14 to support the upper supporting member 14 above the lower supporting member 12.
1~7~36~j~
In use, the base of the lower supporting member is placed on a surface and a reinforcing bar shown in dotted lines at 70 is placed in one of the recesses 34, 36 or 38.
The recesses are suitably contoured to receive the side of reinforcing bar. The lower supporting member supports the lower layer of reinforcing bars. The height of the reinforcing bar 70 above the underlying surface, is determined by selecting the appropriate one of the recesses 34, 36 and 38. The reinforcing bar 70 forms part of the lower layer of reinforcing bars. If the lower layer consists of two sets of reinforcing bars at right angles to each other, another reinforcing bar shown in dotted lines at 72 can be laid on top of reinforcing bar 70.
Next, one end 64 of a spacing rod 60 of a suitable length is inserted into the opening 18 of socket 16. The socket 40 of the upper supporting member 14 is then mounted on the end 62 of the spacing rod 60 and another reinforcing bar (not shown) is placed in the channel 44 to extend thereacross. The channel 44 is suitably shaped to receive the side of the second reinforcing bar. The upper supporting member 14 therefore supports a bar from the upper layer of reinforcing bars.
It will be seen that the height of the upper supporting member 14 above the surface underlying the lower supporting member 12 is determined by the length of the spacing rod 60. Accordingly, by selecting spacing rods 60 of different lengths and selecting different ones of the ~70~
recesses 34, 36 and 38 in the lower supporting member 12, the reinforcing bar support 10 can support each of two layers of reinforcing bars at various heights. This of course reduces the inventory of reinforcing bar supports that needs to be carried and reduces tooling costs as the upper and lower supporting members can be common to a variety of applications. Furthermore, if reinforcing bar supports are left over from one job site, there is a much greater likelihood that these will turn out to be useful on the next job site.
To further minimize cost and the number of pieces which need to be inventoried, it is preferred, as shown in Figure 1, that the spacing rod 60 be cut from a reinforcing bar and that the first and second sockets 16 and 40 be sized to receive such a bar. As most construction projects typically have odds and ends of reinforcing bars readily available, spacing bars 60 of suitable height can be cut from these locally on the job site or at any convenient location. Bar of diameter 10 mm or 3/8 inch diameter may typically be used for rod 60.
Various materials can be used -to form -the reinforcing bar support 10. Preferably, the upper and lower supporting members 14 and 12 respectively, are moulded from plastic. Alternatively, these pieces can be manufactured from steel plate and tubing cut to appropriate shapes and welded together.
The legs 22, 24 and 26 of the lower supporting 1~7~)~t.~L
member 12 can be provided with respective openings 75, 76 and 77 through which a wire can be passed to secure the reinforcing bar to the legs. The openings 75, 76 and 77 also permit concrete to pass through the legs to firmly embed the lower supporting member 12 in the concrete and to reduce the likelihood of voids in the concrete surrounding the lower supporting member 12.
As shown in Figure 1, the lower surface 28 has a recess 78 formed therein. The recess 78 is provided so that if desired, a supporting member 12 can be turned upside down and used in place of the upper supporting member 14. This may typically occur on small jobs where a worker has a box of members 12 and no members 14. When member 12 is used upside down as an upper support, a reinforcing bar is simply placed in the recess 78.
It will be appreciated that what has been described is a preferred embodiment of the invention and that variations may be apparent to those skilled in the art both to the materials and structure of the present invention, while staying within the spirit and scope of what is claimed.
For example, the base can be a separate, disc-shaped or rectangular element attaching to the ends 28, 30 and 32. Such an arrangemen-t might be desirable to add stability if, for example, only two legs were used or if it were desired not to attach the legs directly to the socket 16. Further, the lower surfaces 28, 20 and 32 of the legs 1~7(3t~
g 22, 24 and 26 respectively may define a base without the bottom end of socket 16 extending to the plane of the base.
In addition, and as shown in Figure 2, where primed reference numerals indicate parts corresponding to those at Figure 1, the lower end of socket 16' may be attached to a flat base 80 of suitable si~e to provide good stability and the legs 22', 24' and 26' may extend radially from the first socket 16' with their respective lower surfaces 28', 30' and 32' being above the base 80. However, the Figure 2 version is less desirable than the Figure 1 version, e.g. because the legs 22', 24', 26' would have to be made of very strong material to support the reinforcing bars, and because base 80 must be wide enough to avoid tipping.
Although three legs have been shown, there could be four or five legs if desired.
In some cases, only a single layer of reinforcing bars will be needed, and in that case upper member 14 will not be used. In that case the socket in central column 16 can be omitted, or the column 16 itself can be omitted and the legs joined directly to each other. However, the colurnn 16 and its socket are preferred.
Claims (12)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A reinforcing bar supporting device comprising:
a plurality of legs having inner ends, said inner ends being joined together at a generally central location, said legs extending radially outwardly in different directions and each leg terminating in an outer free end, each leg having an upper surface, each upper surface having a recess therein for receiving and supporting a reinforcing bar, each recess being located at a different height from that of the other recesses, so that said device may support a reinforcing bar at different heights depending on in which recess said reinforcing bar is placed.
a plurality of legs having inner ends, said inner ends being joined together at a generally central location, said legs extending radially outwardly in different directions and each leg terminating in an outer free end, each leg having an upper surface, each upper surface having a recess therein for receiving and supporting a reinforcing bar, each recess being located at a different height from that of the other recesses, so that said device may support a reinforcing bar at different heights depending on in which recess said reinforcing bar is placed.
2. A device according to claim 1 and including an upright column, said inner ends of said legs being joined to said column.
3. A device according to claim 2 wherein said column has a vertically oriented upwardly opening socket therein adapted to receive and support a vertical spacing rod.
4. A device according to claim 3 wherein each leg has a lower surface, said lower surfaces having coplanar portions to form a base for said device.
5. A device according to claim 2, 3 or 4 wherein there are three said legs.
6. A device according to claim 2, 3 or 4 wherein said device is moulded from a plastic material.
7. A device according to claim 3 and including an upper supporting member having a base and an upper surface, said upper surface having a channel therein to receive an upper reinforcing rod, said base having a socket therein adapted to receive the upper end of a said vertical spacing rod.
8. A device according to claim 7 wherein both said sockets are sized for said vertical spacing rods to be a length of reinforcing bar.
9. A device according to claim 7 or 8 wherein each leg has a lower surface, said lower surfaces having coplanar portions to form a base for said device.
10. A device according to claim 7 or 8 wherein there are three said legs, each leg having a lower surface, said lower surfaces having coplanar portions to form a base for said device.
11. A device according to claim 1, 2 or 7 wherein each leg has a lower surface, said lower surfaces having coplanar portions to form a base for said device, each leg having an opening therethrough between its upper and lower surfaces.
12. A device according to claim 4 wherein at least one of said legs has a further recess in its lower surface, so that said device may be used upside down and spaced from a lower said device by a spacing rod extending between said sockets, for supporting an upper reinforcing bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000596942A CA1270661A (en) | 1989-04-17 | 1989-04-17 | Reinforcing bar support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000596942A CA1270661A (en) | 1989-04-17 | 1989-04-17 | Reinforcing bar support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1270661A true CA1270661A (en) | 1990-06-26 |
Family
ID=4139924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000596942A Expired - Fee Related CA1270661A (en) | 1989-04-17 | 1989-04-17 | Reinforcing bar support |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1270661A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994028265A1 (en) * | 1993-05-28 | 1994-12-08 | Alan H. Reid Pty. Ltd. | Screed support |
| EP0825310A2 (en) * | 1996-08-22 | 1998-02-25 | Bernhard Lütkenhaus Hochbau- Stahlbetonbau GmbH | Spacing element for a hollow concrete element |
| AU2004100652B4 (en) * | 2004-08-10 | 2006-03-02 | Universal Tilt Products Pty Ltd | Chair and chair fixing |
| CN103132655A (en) * | 2011-12-01 | 2013-06-05 | 徐逢裕 | Steel bar fixer |
| US11332936B1 (en) * | 2019-11-12 | 2022-05-17 | Newtonoid Technologies, L.L.C. | Rebar support chair |
| US20230071972A1 (en) * | 2021-09-08 | 2023-03-09 | OCM Inc. | Adjustable height rebar chair |
-
1989
- 1989-04-17 CA CA000596942A patent/CA1270661A/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994028265A1 (en) * | 1993-05-28 | 1994-12-08 | Alan H. Reid Pty. Ltd. | Screed support |
| EP0825310A2 (en) * | 1996-08-22 | 1998-02-25 | Bernhard Lütkenhaus Hochbau- Stahlbetonbau GmbH | Spacing element for a hollow concrete element |
| EP0825310A3 (en) * | 1996-08-22 | 1998-12-23 | Bernhard Lütkenhaus Hochbau- Stahlbetonbau GmbH | Spacing element for a hollow concrete element |
| AU2004100652B4 (en) * | 2004-08-10 | 2006-03-02 | Universal Tilt Products Pty Ltd | Chair and chair fixing |
| CN103132655A (en) * | 2011-12-01 | 2013-06-05 | 徐逢裕 | Steel bar fixer |
| US11332936B1 (en) * | 2019-11-12 | 2022-05-17 | Newtonoid Technologies, L.L.C. | Rebar support chair |
| US20230071972A1 (en) * | 2021-09-08 | 2023-03-09 | OCM Inc. | Adjustable height rebar chair |
| US11634909B2 (en) * | 2021-09-08 | 2023-04-25 | OCM, Inc. | Adjustable height rebar chair |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |