CA2252200C - Rebar support system - Google Patents
Rebar support system Download PDFInfo
- Publication number
- CA2252200C CA2252200C CA 2252200 CA2252200A CA2252200C CA 2252200 C CA2252200 C CA 2252200C CA 2252200 CA2252200 CA 2252200 CA 2252200 A CA2252200 A CA 2252200A CA 2252200 C CA2252200 C CA 2252200C
- Authority
- CA
- Canada
- Prior art keywords
- legs
- passage
- chair
- rebar
- rebars
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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
- E04C5/168—Spacers connecting parts for reinforcements and spacing the reinforcements from the form
-
- 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
This rebar chair has a body with four legs between which there are defined two intersecting passages for simultaneously receiving the intersecting portions of two rebars normal to each other. The rebars are suspended by a fastening wire or supported by an auxiliary chair below said body. The legs forming one of the passages have a uniform spacing and are adapted to closely straddle the rebar extending through the same. The chair is positively located and stabilized by the intersecting rebars. A saddle is formed on the top of the body for simultaneously supporting a third rebar. The spacing between the faces of the legs forming a first passage is uniform from the body to the free ends of the legs while the spacing between the faces of the legs forming the other right angle passage increases from the body to the free ends of the legs in such a manner that depending on the orientation of the chair with respect to the rebars the same can be positioned at two adjusted distances from the bottom of the concrete form.
The legs of the second passage flare downwardly so that their spacing progressively increases from the body to the free ends from a spacing smaller than to a spacing greater than the uniform spacing between the legs of the first passage.
The legs of the second passage flare downwardly so that their spacing progressively increases from the body to the free ends from a spacing smaller than to a spacing greater than the uniform spacing between the legs of the first passage.
Description
TITLE OF THE INVENTION
Rebar support system FIELD OF THE INVENTION
The present invention relates to rebar supports or chairs to support a grid of rebars at an adjusted distance above the bottom of a concrete form prior to concrete pouring.
BACKGROUND OF THE INVENTION
Known rebar chairs are designed to support a rebar at any position along its length. Such rebar chairs can be accidentally tipped over if the rebar is hit and displaced. This is especially true when the rebars have yet to be tied at their intersections to form a rigid grid.
OBJECTS OF THE INVENTION
It is therefore a general object of the present invention to provide a rebar chair which overcomes the above-mentioned disadvantage.
An advantage of the present invention is that the rebar chair is capable of supporting a grid of rebars at any one of two levels above the bottom of a concrete form.
Another advantage of the present invention is that the rebar chair is capable of supporting two grids of rebars in superposed position.
Other objects and advantages of the present invention will become apparent from a careful reading of the detailed description provided herein, with appropriate reference to the accompanying drawings.
SUMMARY OF THE INVENTION
A rebar chair in accordance with the present invention serves to support above the bottom of a concrete form, the intersecting portions of two rebars generally normal to each other, the chair comprises a unitary member including a body having a top end, four legs downwardly depending from the body and spaced from one another to form a first and a second rebar receiving passage which intersect and are generally normal to each other, the legs having lower free ends for resting on the concrete form bottom, the spacing between the legs on each side of the first passage being substantially uniform from the body to the free ends such that the legs closely straddle one of the rebar extending through the first passage, the legs also straddling the other one of the rebars simultaneously extending through the second passage; a generally concave rebar supporting and locating saddle formed by the top end of the body for simultaneously receiving at least one additional rebar thereon, the saddle being generally parallel to the second passage.
Typically, the legs on each side of the second passage flare downwardly so that their spacing progressively increases from the body to the free ends from a spacing smaller to a spacing greater than the uniform spacing between the legs on each side of the first passage.
In one embodiment, each leg forms a first and a second inner flat side face generally normal to each other, respectively defining the first and second passages.
In another embodiment, the lower part of the body forms a first and a second pair of crotches between the legs, the first pair of crotches has a semi-cylindrical surface merging with the first side faces and forming the top of the first passage, the second pair of crotches has an inverted V-shaped surface merging with the second side faces and forming the top of the second passage.
The invention is also directed to the combination of the above defined chair with two intersecting rebars respectively extending through the first and second passages and a device for maintaining the intersecting portions above the bottom of a concrete form and below the body. This combination may include a third rebar supported by the saddle. This device is either a fastening wire suspending the intersecting portions from the chair or an auxiliary chair underlying and supporting the intersecting portions and, the auxiliary chair being located between the four legs and resting on the bottom of the concrete form.
BRIEF DESCRIPTION OF THE DRAWINGS
In the annexed drawings, like reference characters indicate like elements throughout.
Figure 1 is a perspective view of a rebar chair and auxiliary chair in accordance with an embodiment of the present invention supporting rebars;
Figures 2 and 3 are side elevations of the rebar chair of Fig. 1 at right angles to each other; also showing a fastening wire and rebars supported by the chair;
Figure 4 is a top plan view of Fig. 3;
Figure 5 is a cross-section along line 5-5 of Fig. 3, and Figure 6 is a perspective view of the auxiliary chair of Fig. 1.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
With reference to the annexed drawings the preferred embodiments of the present invention will be herein described for indicative purpose and by no means as of limitation.
The rebar chair of the invention is a unitary member preferably molded out of thermoplastic material and is indicated at 2 in Fig. 1. It serves to support a lower grid of intersecting rebars, namely a top rebar 4 and a bottom rebar 6 substantially at right angles to each other at the intersecting portions of the rebars 4, 6. It also serves to support a top rebars 8 and 8a of a superposed grid. The rebars 4, 6, 8 and 8a are supported at an adjusted level above the bottom B of a concrete form prior to pouring concrete therein. The rebar chair includes a body 10 and four legs 12 arranged at the four corners of a square, and symmetrical with respect to the vertical axis of body 10. The lower free ends of the legs 12 are adapted to rest directly on the bottom B of the concrete form;
each leg has an L-shaped cross-section and defines inner side faces 16 and 22;
opposite side faces 16 are joined at the top by a crotch 18 at the lower end of the upright body 10. The crotch 18 forms a semi-cylindrical surface as clearly shown in Fig. 2.
The four inner side faces 16 and the two crotches 18 form a first passage for the top rebar 4. The inner faces 16 are generally co-planar on each side of the top rebar 4. The first passage has a uniform width, i.e. the spacing between opposite faces 16 is uniform from the crotch 18 to the lower free end of the legs 12. This spacing is selected to be substantially equal to the diameter of the rebars 4 and 6. Therefore, the chair 2 is prevented from lateral movement transverse to the rebar 4 or 6 which extends through the first passage.
A second passage is defined by the inner side faces 22 of the four legs 12, these side faces being generally co-planar on each side of the rebar extending there through; the second passage is further defined by a crotch 24 at the bottom of body 10, this crotch 24 having an inverted V-shape as shown in Fig. 3.
The inside faces 22 flare downwardly from the crotch 24 to the lower free ends 14 of the legs 12 as clearly shown in Fig. 3. The spacing of the legs 12 at the bottom of the second passage is greater than the uniform leg spacing of the first passage but the spacing of the legs 12 at the top of the second passage namely is at the junction indicated at 23 in Fig. 3 between the inside faces 22 and the inverted V-shaped crotch 24, is smaller than the uniform leg spacing of the first passage. The top of body 10 forms a generally concave shape saddle 26 for receiving rebar 8 and supporting the same. Saddle 26 is substantially parallel to the second passage.
The chair 2 is reinforced by a center rib 28 on each side of the body merging with the crotch 18 at its lower end. The chair 2 is further reinforced by two ribs 30 equally spaced on each side of center rib 28 and merging with the inner faces 16 of the four legs 12. These ribs 28, 30 have a generally triangular shape and merge with body 10 just below the saddle 26. The chair 2 is further reinforced by two ribs 32 which extend along the faces 22 and the crotch 24 of the second passage.
The chair 2 is further reinforced by a pair of lateral ribs 34 merging with the respective crotches 24.
Finally, a triangular bottom rib 36 co-planar with each face 22 of the second passage serves to further stabilize the chair 2 against tipping.
The intersecting portions of the rebars 4 and 6 are suspended between the four legs 12 by means of a fastener wire 38 passing underneath the bottom rebar 6 and either over rebar 8 or directly over saddle 26 if there is no rebar 8. The ends of wire 38 are twisted together as shown at 40. Instead of wire 38 an auxiliary chair 42, shown in Figs. 1 and 6 is located between the four legs 12 under the intersecting portions of rebars 4 and 6 to support the same above floor B, chair 42 is conventional.
Rebar support system FIELD OF THE INVENTION
The present invention relates to rebar supports or chairs to support a grid of rebars at an adjusted distance above the bottom of a concrete form prior to concrete pouring.
BACKGROUND OF THE INVENTION
Known rebar chairs are designed to support a rebar at any position along its length. Such rebar chairs can be accidentally tipped over if the rebar is hit and displaced. This is especially true when the rebars have yet to be tied at their intersections to form a rigid grid.
OBJECTS OF THE INVENTION
It is therefore a general object of the present invention to provide a rebar chair which overcomes the above-mentioned disadvantage.
An advantage of the present invention is that the rebar chair is capable of supporting a grid of rebars at any one of two levels above the bottom of a concrete form.
Another advantage of the present invention is that the rebar chair is capable of supporting two grids of rebars in superposed position.
Other objects and advantages of the present invention will become apparent from a careful reading of the detailed description provided herein, with appropriate reference to the accompanying drawings.
SUMMARY OF THE INVENTION
A rebar chair in accordance with the present invention serves to support above the bottom of a concrete form, the intersecting portions of two rebars generally normal to each other, the chair comprises a unitary member including a body having a top end, four legs downwardly depending from the body and spaced from one another to form a first and a second rebar receiving passage which intersect and are generally normal to each other, the legs having lower free ends for resting on the concrete form bottom, the spacing between the legs on each side of the first passage being substantially uniform from the body to the free ends such that the legs closely straddle one of the rebar extending through the first passage, the legs also straddling the other one of the rebars simultaneously extending through the second passage; a generally concave rebar supporting and locating saddle formed by the top end of the body for simultaneously receiving at least one additional rebar thereon, the saddle being generally parallel to the second passage.
Typically, the legs on each side of the second passage flare downwardly so that their spacing progressively increases from the body to the free ends from a spacing smaller to a spacing greater than the uniform spacing between the legs on each side of the first passage.
In one embodiment, each leg forms a first and a second inner flat side face generally normal to each other, respectively defining the first and second passages.
In another embodiment, the lower part of the body forms a first and a second pair of crotches between the legs, the first pair of crotches has a semi-cylindrical surface merging with the first side faces and forming the top of the first passage, the second pair of crotches has an inverted V-shaped surface merging with the second side faces and forming the top of the second passage.
The invention is also directed to the combination of the above defined chair with two intersecting rebars respectively extending through the first and second passages and a device for maintaining the intersecting portions above the bottom of a concrete form and below the body. This combination may include a third rebar supported by the saddle. This device is either a fastening wire suspending the intersecting portions from the chair or an auxiliary chair underlying and supporting the intersecting portions and, the auxiliary chair being located between the four legs and resting on the bottom of the concrete form.
BRIEF DESCRIPTION OF THE DRAWINGS
In the annexed drawings, like reference characters indicate like elements throughout.
Figure 1 is a perspective view of a rebar chair and auxiliary chair in accordance with an embodiment of the present invention supporting rebars;
Figures 2 and 3 are side elevations of the rebar chair of Fig. 1 at right angles to each other; also showing a fastening wire and rebars supported by the chair;
Figure 4 is a top plan view of Fig. 3;
Figure 5 is a cross-section along line 5-5 of Fig. 3, and Figure 6 is a perspective view of the auxiliary chair of Fig. 1.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
With reference to the annexed drawings the preferred embodiments of the present invention will be herein described for indicative purpose and by no means as of limitation.
The rebar chair of the invention is a unitary member preferably molded out of thermoplastic material and is indicated at 2 in Fig. 1. It serves to support a lower grid of intersecting rebars, namely a top rebar 4 and a bottom rebar 6 substantially at right angles to each other at the intersecting portions of the rebars 4, 6. It also serves to support a top rebars 8 and 8a of a superposed grid. The rebars 4, 6, 8 and 8a are supported at an adjusted level above the bottom B of a concrete form prior to pouring concrete therein. The rebar chair includes a body 10 and four legs 12 arranged at the four corners of a square, and symmetrical with respect to the vertical axis of body 10. The lower free ends of the legs 12 are adapted to rest directly on the bottom B of the concrete form;
each leg has an L-shaped cross-section and defines inner side faces 16 and 22;
opposite side faces 16 are joined at the top by a crotch 18 at the lower end of the upright body 10. The crotch 18 forms a semi-cylindrical surface as clearly shown in Fig. 2.
The four inner side faces 16 and the two crotches 18 form a first passage for the top rebar 4. The inner faces 16 are generally co-planar on each side of the top rebar 4. The first passage has a uniform width, i.e. the spacing between opposite faces 16 is uniform from the crotch 18 to the lower free end of the legs 12. This spacing is selected to be substantially equal to the diameter of the rebars 4 and 6. Therefore, the chair 2 is prevented from lateral movement transverse to the rebar 4 or 6 which extends through the first passage.
A second passage is defined by the inner side faces 22 of the four legs 12, these side faces being generally co-planar on each side of the rebar extending there through; the second passage is further defined by a crotch 24 at the bottom of body 10, this crotch 24 having an inverted V-shape as shown in Fig. 3.
The inside faces 22 flare downwardly from the crotch 24 to the lower free ends 14 of the legs 12 as clearly shown in Fig. 3. The spacing of the legs 12 at the bottom of the second passage is greater than the uniform leg spacing of the first passage but the spacing of the legs 12 at the top of the second passage namely is at the junction indicated at 23 in Fig. 3 between the inside faces 22 and the inverted V-shaped crotch 24, is smaller than the uniform leg spacing of the first passage. The top of body 10 forms a generally concave shape saddle 26 for receiving rebar 8 and supporting the same. Saddle 26 is substantially parallel to the second passage.
The chair 2 is reinforced by a center rib 28 on each side of the body merging with the crotch 18 at its lower end. The chair 2 is further reinforced by two ribs 30 equally spaced on each side of center rib 28 and merging with the inner faces 16 of the four legs 12. These ribs 28, 30 have a generally triangular shape and merge with body 10 just below the saddle 26. The chair 2 is further reinforced by two ribs 32 which extend along the faces 22 and the crotch 24 of the second passage.
The chair 2 is further reinforced by a pair of lateral ribs 34 merging with the respective crotches 24.
Finally, a triangular bottom rib 36 co-planar with each face 22 of the second passage serves to further stabilize the chair 2 against tipping.
The intersecting portions of the rebars 4 and 6 are suspended between the four legs 12 by means of a fastener wire 38 passing underneath the bottom rebar 6 and either over rebar 8 or directly over saddle 26 if there is no rebar 8. The ends of wire 38 are twisted together as shown at 40. Instead of wire 38 an auxiliary chair 42, shown in Figs. 1 and 6 is located between the four legs 12 under the intersecting portions of rebars 4 and 6 to support the same above floor B, chair 42 is conventional.
In the case two rebars 8, 8a are superposed above the saddle 26 as shown in Fig. 1, a wire 44, similar to the fastener wire 38, may be used to fasten them to the chair 2. The chair 2 may be positioned at two right angular positions with respect to the intersecting portions of the two rebars 4 and 6.
As shown in Fig. 2, when the chair 2 is positioned so that the top rebar 4 extends through the first passage 16 with the top rebar held against the semi-cylindrical crotch 18, the two rebars are held at a minimum distance from the concrete form floor B as indicated by L1 in Fig. 2.
When the chair 2 is turned at right angle so that the top rebar 4 extends through the second passage indicated by 22 in Fig. 3, then the distance L2 between the bottom B and the bottom rebar 6 is smaller than L1. This is so because the top portion of the inner faces 22 of the second passage has a spacing which is less than the spacing between the inner faces 16 of the first passage. Thus an adjustment of about 1/8" is obtained for the height of the rebars above the concrete form floor B using the same chair 2.
The chair 2 is stabilized against tipping because it straddles the intersecting portions of the two rebars 4 and 6.
The chair 2 is molded in one piece with a minimum of thermo-plastic material and yet is very strong due to the plurality of ribs 32, 34 inclusive.
Although the present rebar support system has been described with a certain degree of particularity, it is to be understood that the disclosure has been made by way of example only and that the present invention is not limited to the features of the embodiments described and illustrated herein, but includes all variations and modifications within the scope and spirit of the invention as hereinafter claimed.
As shown in Fig. 2, when the chair 2 is positioned so that the top rebar 4 extends through the first passage 16 with the top rebar held against the semi-cylindrical crotch 18, the two rebars are held at a minimum distance from the concrete form floor B as indicated by L1 in Fig. 2.
When the chair 2 is turned at right angle so that the top rebar 4 extends through the second passage indicated by 22 in Fig. 3, then the distance L2 between the bottom B and the bottom rebar 6 is smaller than L1. This is so because the top portion of the inner faces 22 of the second passage has a spacing which is less than the spacing between the inner faces 16 of the first passage. Thus an adjustment of about 1/8" is obtained for the height of the rebars above the concrete form floor B using the same chair 2.
The chair 2 is stabilized against tipping because it straddles the intersecting portions of the two rebars 4 and 6.
The chair 2 is molded in one piece with a minimum of thermo-plastic material and yet is very strong due to the plurality of ribs 32, 34 inclusive.
Although the present rebar support system has been described with a certain degree of particularity, it is to be understood that the disclosure has been made by way of example only and that the present invention is not limited to the features of the embodiments described and illustrated herein, but includes all variations and modifications within the scope and spirit of the invention as hereinafter claimed.
Claims (12)
1. A rebar chair for supporting above a bottom of a concrete form intersecting portions of two rebars generally normal to each other, said rebar chair comprising a unitary member including a body having a top end, four legs downwardly depending from said body and spaced from one another to form a first and a second rebar receiving passage which intersect and are generally normal to each other, said legs having lower free ends for resting on said concrete form bottom, the spacing between the legs on each side of said first passage being substantially uniform from said body to said free ends such that said legs closely straddle one of the rebars extending through said first passage, said legs straddling the other one of the rebars simultaneously extending through said second passage, said rebar chair further including a rebar supporting and locating saddle formed by the top end of said body for simultaneously receiving at least one additional rebar thereon, said legs on each side of said second passage flaring downwardly so that their spacing progressively increases from said body to said free ends from a spacing smaller to a spacing greater than the uniform spacing between the legs on each side of said first passage.
2. A rebar chair as defined in claim 1, wherein each leg forms a first and a second inner flat side face substantially normal to each other, respectively defining said first and second passages.
3. A rebar chair as defined in claim 2, wherein the lower part of said body forms a first and a second pair of crotches between said legs, said first pair of crotches having a semi-cylindrical surface merging with said first side faces and forming the top of said first passage, said second pair of crotches having an inverted V-shaped surface merging with said second side faces and forming the top of said second passage.
4. A rebar chair as defined in claim 3, wherein said saddle is generally parallel to said second passage.
5. A rebar chair as defined in claim 4, wherein said saddle is generally concave.
6. A rebar chair as defined in claim 1, further including an auxiliary chair for underlying and supporting said intersecting portions, said auxiliary chair being located between said four legs and resting on the bottom of said concrete form.
7. A combination comprising a rebar chair, two rebars generally normal to each other and a device for maintaining intersecting portions of said rebars above a bottom of a concrete form on which the chair rests, said chair comprising a unitary member including a body having a top end, four legs downwardly depending from said body and spaced from one another to form a first and a second rebar receiving passage which intersect and are generally normal to each other, said legs having lower free ends resting on the bottom of
8 said concrete form, said rebars simultaneously respectively extending through said first and second passage with said body above said intersecting portions, the spacing between the legs on each side of said first passage being substantially uniform with said legs closely engaging one of the rebars extending through said first passage, said rebar chair further including a rebar supporting and locating saddle formed by the top end of said body and a third rebar simultaneously supported on said saddle above said intersecting rebars, said legs on each side of said second passage flaring downwardly so that their spacing progressively increases from said body to said free legs from a spacing smaller than to a spacing greater than the uniform spacing between the legs on each side of said first passage.
8. A combination as defined in claim 7, wherein each leg forms a first and a second inner flat side face substantially normal to each other and respectively defining said first and second passages.
8. A combination as defined in claim 7, wherein each leg forms a first and a second inner flat side face substantially normal to each other and respectively defining said first and second passages.
9. A combination as defined in claim 8, wherein a lower part of said body forms a first and a second pair of crotches between the legs, said first pair of crotches having a semi-cylindrical surface merging with said first side faces and forming a top of said first passage against which one of said intersecting rebars abut, said second pair of crotches having an inverted V-shaped surface merging with said second side faces and forming a top of said second passage.
10. A combination as defined in claim 9, wherein said saddle is generally parallel to said second passage and is generally concave.
11. A combination comprising a rebar chair, two rebars generally normal to each other and a device for maintaining intersecting portions of said rebars above a bottom of a concrete form on which the chair rests, said chair comprising a unitary member including a body having a top end, four legs downwardly depending from said body and spaced from one another to form a first and a second rebar receiving passage which intersect and are generally normal to each other, said legs having lower free ends resting on the bottom of said concrete form, said rebars simultaneously respectively extending through said first and second passage with said body above said intersecting portions, the spacing between the legs on each side of said first passage being substantially uniform with said legs closely engaging one of the rebars extending through said first passage, said device being a fastening wire suspending said intersecting portions from said chair.
12. A combination comprising a rebar chair, two rebars generally normal to each other and a device for maintaining intersecting portions of said rebars above a bottom of a concrete form on which the chair rests, said chair comprising a unitary member including a body having a top end, four legs downwardly depending from said body and spaced from one another to form a first and a second rebar receiving passage which intersect and are generally normal to each other, said legs having lower free ends resting on the bottom of said concrete form, said rebars simultaneously respectively extending through said first and second passage with said body above said intersecting portions, the spacing between the legs on each side of said first passage being substantially uniform with said legs closely engaging one of the rebars extending through said first passage, said device being an auxiliary chair underlying and supporting said intersecting portions and located between said four legs, said auxiliary chair resting on the bottom of said concrete form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2252200 CA2252200C (en) | 1998-11-09 | 1998-11-09 | Rebar support system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2252200 CA2252200C (en) | 1998-11-09 | 1998-11-09 | Rebar support system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2252200A1 CA2252200A1 (en) | 2000-05-09 |
| CA2252200C true CA2252200C (en) | 2004-01-20 |
Family
ID=29425555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2252200 Expired - Lifetime CA2252200C (en) | 1998-11-09 | 1998-11-09 | Rebar support system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2252200C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11927013B1 (en) | 2023-08-30 | 2024-03-12 | T. J. Harris Company | Support for concrete reinforcing members |
| USD1027618S1 (en) | 2023-08-30 | 2024-05-21 | T.J. Harris Company | Support for concrete reinforcing members |
| USD1033202S1 (en) | 2023-08-29 | 2024-07-02 | T.J. Harris Company | Support for reinforcing members in concrete footing |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7108453B2 (en) * | 2002-04-19 | 2006-09-19 | Harris Terry L | Support for concrete reinforcing members |
-
1998
- 1998-11-09 CA CA 2252200 patent/CA2252200C/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD1033202S1 (en) | 2023-08-29 | 2024-07-02 | T.J. Harris Company | Support for reinforcing members in concrete footing |
| US11927013B1 (en) | 2023-08-30 | 2024-03-12 | T. J. Harris Company | Support for concrete reinforcing members |
| USD1027618S1 (en) | 2023-08-30 | 2024-05-21 | T.J. Harris Company | Support for concrete reinforcing members |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2252200A1 (en) | 2000-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6354054B1 (en) | Rebar support system | |
| US3788025A (en) | Chair support for reinforcing rods | |
| US4498270A (en) | Support for positioning reinforcing rods or mesh in concrete or the like | |
| US4689867A (en) | Concrete reinforcement spacer and method of use | |
| US3673753A (en) | Support device for concrete reinforcing bars | |
| US8028490B2 (en) | Rebar chair | |
| US7458192B2 (en) | Chair for supporting wire mesh | |
| US20050210816A1 (en) | Rebar chair and supporting plate | |
| US7328538B2 (en) | Rebar spacer | |
| US4869042A (en) | Retaining device | |
| CA2989070C (en) | A multifunctional rebar support system for reinforcement of concrete structures | |
| CA2252200C (en) | Rebar support system | |
| US5813643A (en) | Cylinder holder for cylindrical tank | |
| US3132448A (en) | Chair for concrete reinforcing rods | |
| US3512330A (en) | Chairs for reinforcing rods | |
| US3460309A (en) | Supporting means for concrete reinforcements | |
| US5052654A (en) | Molded plastic void hold down device for concrete beam-slab formation | |
| CA1270661A (en) | Reinforcing bar support | |
| US2842328A (en) | Garbage can stand | |
| US20070295873A1 (en) | Saddle chair for holding rebar in place in tilt-up wall construction | |
| US5876001A (en) | Apparatus for supporting cooling pipes and reinforcing bars for an ice rink | |
| US2924091A (en) | Placement support for reinforcing rods | |
| JP3255401B2 (en) | Construction moving fence | |
| JPH031539Y2 (en) | ||
| US6027084A (en) | Support for use with a lawn ornament |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20181109 |