US3289378A - Reinforcing rod support - Google Patents
Reinforcing rod support Download PDFInfo
- Publication number
- US3289378A US3289378A US344526A US34452664A US3289378A US 3289378 A US3289378 A US 3289378A US 344526 A US344526 A US 344526A US 34452664 A US34452664 A US 34452664A US 3289378 A US3289378 A US 3289378A
- Authority
- US
- United States
- Prior art keywords
- support
- reinforcing
- members
- reinforced structure
- supporting
- 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
- 230000003014 reinforcing effect Effects 0.000 title claims description 34
- 239000004567 concrete Substances 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 239000004035 construction material Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 description 10
- 229920003023 plastic Polymers 0.000 description 10
- 238000010276 construction Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000002023 wood Substances 0.000 description 5
- 239000011150 reinforced concrete Substances 0.000 description 4
- 239000011505 plaster Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920001800 Shellac Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical compound OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 description 1
- 229940113147 shellac Drugs 0.000 description 1
- 235000013874 shellac Nutrition 0.000 description 1
- 239000004208 shellac Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/18—Spacers of metal or substantially of metal
Definitions
- the present invention relates to reinforcing means for use with poured concrete and other plastic substances, and, more particularly, to novel and improved support members for reinforcing rods.
- Slab bar bolsters, individual high chairs and continuous high chairs are well known and extensively used in the field of reinforced concrete for supporting reinforcing bars at predetermined levels.
- These supporting members are usually made of various configurations of heavy gauge wire.
- a wooden form is laid out in which the reinforcing concrete is to be poured.
- the supporting members are set out on top of the wooden form boards, and the reinforcing bars are laid across the supporting members and are tied thereto at the various intersections. After this is done, the concrete or other plastic material is poured into the form, the wood form being subsequently removed after sufiicient hardening of the concrete or other plastic material.
- the ceiling is either painted or plaster is applied to the concrete surface either directly or after an intermediate grinding step following the stripping away of the form boards. Since the middle reinforcing rod supporting members rested directly on the wood forms during the pouring operation, there is at least point contact of the metal support members with the outer surface of the concrete. Therefore, even if the metal support members are formed of galvanized metal, more often than not their unprotected metal surfaces are susceptible of rust and corrosion, either as a result of the grinding operation or through the general construction activities.
- nonmetallic contact members adapted to be attached to those portions of the bottom legs of the supporting members, which would otherwise be in contact with the wood form.
- the principal requirements with respect to these nonmetallic contact members is that they will withstand compression produced by the weight of the construction workers and the materials which may bear upon them, that they not be susceptible of rust or corrosion, and that there be a minimum contact between the contact members and the pouring forms.
- FIGURE 1 is a perspective view of a continuous high chair reinforcing rod supporting means in combination with contact members, in accordance with the invention
- FIG. 2 is a partial plane view of a pouring form in which reinforcing rod supporting means and reinforcing rods have been set and tied;
- FIG. 3 is a partial cross-sectional View of the pouring form of FIG. 2 taken along the line 33 and looking in the direction of the arrows, after concrete had been poured into the form;
- FIG. 4 is a perspective view of a novel form of individual high chair, in accordance with the invention.
- FIG. 5 is a perspective view of a novel form of slab bar bolster, partially broken away to show the configuration of the leg members of the slab bar bolster, in accordance with the invention.
- FIG. 6 is a perspective view of a contact member suitable for combination with reinforcing rod supporting means, in accordance with the invention.
- a horizontal transverse supporting bar 11 is soldered, welded or otherwise suitably fastened to the supporting legs 12, which may have any suitable configuration but normally have ends 13 which either are adapted to be horizontally disposed continuous with the wood form boards 14 on which they are rested, or, in the case of conventional types :now in use, upturned so as to present a minimal point contact with the form boards 14.
- the ends 13 of the legs 12 are adapted to be horizontally disposed and lie within a channel in a nonmetallic contact member 15, shown in greater detail in FIG. 6.
- the contact member 15 which will be formed of any suitable plastic material, such as polyethylene, for example, having sufficient strength characteristics to withstand compression which might be placed on it by means of the Weight of the construction workmen or the construction materials passing over or laid on the reinforcing rods before the concrete or other plastic material is poured into the form.
- the contact members 15 may take any suitable form, however, in the preferred embodiment of the invention, the contact member 15 is: cylindrical with an open eccentric channel 16 running longitudinally therewith. It is obvious that a contact member of this type may be either individually fabricated or may be fabricated in the form of an elongated plastic extrusion which can be divided into appropriate lengths in any suitable manner.
- One of the principal criterions in the construction and form of the contact member 15, is that it provides a minimum contact with any surface upon which it is rested, such as the form boards 14.
- the reinforcing bar supporting means 10 are placed on the form boards 1 in spaced-apart parallel relation, usually at a distance of 4 feet.
- Conventional reinforcing bars 17 are then laid transversely across the bars 11 on each of the supporting means 10.
- each intersection of the reinforcing bar 17 and the horizontal bar 11 of the supporting means 10 must then be tied with suitable tie wires. Construction codes also usually require that there be minimum clearance between the reinforcing bar 17 and the form boards 14, e.-g. of an inch.
- a slab bar bolster which may have a configuration similar to the supporting means 10 of FIG. 1 without the contact members 15.
- a construction such as that shown in FIG. 5 is used, in accordance with the invention.
- a slab bar bolster type supporting means 30 having a horizontal transverse bar 31 includes substantially straight legs 32, which are adapted to lie for substantially their entire extent in the open channel 16 of the plastic contact member 151;.
- FRANK L. ABBOTT Primary Examiner.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Description
W66 W. J. CARROLL. 33%,378
REINFORCING ROD SUPPORT Original Filed April 5, 1960 2 1 99Y' "S1'l@8't 1 Al Mil W u WIN Ml 1 '0 I j I l I /7 /0 /4 1 0 /7 ,5 .n fl /63F. 5 JNVENTOR.
WILLIAM JAY CARROLL tail-"i; BY m j 7 i Mai-Q hig ATTORNEYS w. J. CARROLL 3,2937% REINFORCING ROD SUPPORT Original Filed April 5, 1960 2 Sheets-Sheet 2 IN VEN TOR. WILLIAM JAY CARROLL his ATTORNEYS 3,289,378 Patented Dec. 6, 1966 Arr 3,289,378 REINFORCING R01) SUPPORT William Jay Carroll, Harbor Road, Sands Point, N.Y. Continuation of application Ser. No. 20,102, Apr. 5, 1960. This application Feb. 10, 1964, Ser. No. 344,526 3 Claims. (Cl. 52688) This application is a continuation of my copendin-g United States application Serial No. 20,102 filed April 5, 1960 and now abandoned.
The present invention relates to reinforcing means for use with poured concrete and other plastic substances, and, more particularly, to novel and improved support members for reinforcing rods.
Slab bar bolsters, individual high chairs and continuous high chairs are well known and extensively used in the field of reinforced concrete for supporting reinforcing bars at predetermined levels. These supporting members are usually made of various configurations of heavy gauge wire. A wooden form is laid out in which the reinforcing concrete is to be poured. The supporting members are set out on top of the wooden form boards, and the reinforcing bars are laid across the supporting members and are tied thereto at the various intersections. After this is done, the concrete or other plastic material is poured into the form, the wood form being subsequently removed after sufiicient hardening of the concrete or other plastic material.
In the case of reinforced concrete ceilings, the ceiling is either painted or plaster is applied to the concrete surface either directly or after an intermediate grinding step following the stripping away of the form boards. Since the middle reinforcing rod supporting members rested directly on the wood forms during the pouring operation, there is at least point contact of the metal support members with the outer surface of the concrete. Therefore, even if the metal support members are formed of galvanized metal, more often than not their unprotected metal surfaces are susceptible of rust and corrosion, either as a result of the grinding operation or through the general construction activities.
The resultant rust bleeds through any subsequent coat of plaster or paint that may be applied often requiring replas'tering or complete redoing of the ceiling structure.
It is customary to attempt to prevent this form of rust bleed by painting any metal surfaces appearing at the surface of the reinforced concrete with shellac or some similar substance. This is a time-consuming operation and unfortunately is usually not performed in a very reliable fashion.
In accordance with the invention, there is provided in combination with what otherwise may be conventional reinforcing rod supporting means, such as slab bar bolsters, individual high chairs, continuous high chairs, etc., nonmetallic contact members adapted to be attached to those portions of the bottom legs of the supporting members, which would otherwise be in contact with the wood form. The principal requirements with respect to these nonmetallic contact members is that they will withstand compression produced by the weight of the construction workers and the materials which may bear upon them, that they not be susceptible of rust or corrosion, and that there be a minimum contact between the contact members and the pouring forms.
For a more complete understanding of the invention, reference may be had to the following detailed description taken in conjunction with the accompanying figures of the drawings, in which:
FIGURE 1 is a perspective view of a continuous high chair reinforcing rod supporting means in combination with contact members, in accordance with the invention;
FIG. 2 is a partial plane view of a pouring form in which reinforcing rod supporting means and reinforcing rods have been set and tied;
FIG. 3 is a partial cross-sectional View of the pouring form of FIG. 2 taken along the line 33 and looking in the direction of the arrows, after concrete had been poured into the form;
FIG. 4 is a perspective view of a novel form of individual high chair, in accordance with the invention;
FIG. 5 is a perspective view of a novel form of slab bar bolster, partially broken away to show the configuration of the leg members of the slab bar bolster, in accordance with the invention; and
FIG. 6 is a perspective view of a contact member suitable for combination with reinforcing rod supporting means, in accordance with the invention.
In the case of the continuous high chair type supporting device 10 of FIGS. 1, 2 and 3 which constitutes a preformed unitary support means, a horizontal transverse supporting bar 11 is soldered, welded or otherwise suitably fastened to the supporting legs 12, which may have any suitable configuration but normally have ends 13 which either are adapted to be horizontally disposed continuous with the wood form boards 14 on which they are rested, or, in the case of conventional types :now in use, upturned so as to present a minimal point contact with the form boards 14. However, in accordance with the invention, the ends 13 of the legs 12 are adapted to be horizontally disposed and lie within a channel in a nonmetallic contact member 15, shown in greater detail in FIG. 6.
The contact member 15, which will be formed of any suitable plastic material, such as polyethylene, for example, having sufficient strength characteristics to withstand compression which might be placed on it by means of the Weight of the construction workmen or the construction materials passing over or laid on the reinforcing rods before the concrete or other plastic material is poured into the form. The contact members 15 may take any suitable form, however, in the preferred embodiment of the invention, the contact member 15 is: cylindrical with an open eccentric channel 16 running longitudinally therewith. It is obvious that a contact member of this type may be either individually fabricated or may be fabricated in the form of an elongated plastic extrusion which can be divided into appropriate lengths in any suitable manner.
One of the principal criterions in the construction and form of the contact member 15, is that it provides a minimum contact with any surface upon which it is rested, such as the form boards 14.
After the wood form 14 is constructed, the reinforcing bar supporting means 10 are placed on the form boards 1 in spaced-apart parallel relation, usually at a distance of 4 feet. Conventional reinforcing bars 17 are then laid transversely across the bars 11 on each of the supporting means 10. In accordance with customary construction codes, each intersection of the reinforcing bar 17 and the horizontal bar 11 of the supporting means 10 must then be tied with suitable tie wires. Construction codes also usually require that there be minimum clearance between the reinforcing bar 17 and the form boards 14, e.-g. of an inch.
If it is desired to include more than one layer of reinforcing bars in an especially thick concrete floor or ceiling, for example, higher level continuous high chairs or individual high chair type supporting means 20 (FIG. 4), for example, might be placed on the form boards 14 in spaces intermediate the reinforcing bars 17 and horizontal bars 11 of the supporting means 10. The rest point 21 0f the individual high chair type supporting means 20 would be at a level above that of the horizontal bars 11. In so far as the contact members 15a on the legs of the individual high chair type of supporting means 20 and concerned, they may be either identical with or substantially similar to the contact member 15 shown in FIG. 6.
In practice, the lower reinforcing rods in a concrete form, which are to be spaced the minimum clearance of of an inch from the form boards, are customarily supported by a supporting means of a conventional type called a slab bar bolster, which may have a configuration similar to the supporting means 10 of FIG. 1 without the contact members 15. In view of the small space in which the slab bar 'bolster supporting means must be placed, a construction such as that shown in FIG. 5 is used, in accordance with the invention. In FIG. 5, a slab bar bolster type supporting means 30 having a horizontal transverse bar 31, includes substantially straight legs 32, which are adapted to lie for substantially their entire extent in the open channel 16 of the plastic contact member 151;.
After the form is constructed in the manner shown in FIG. 2, structural concrete is poured into the form over and around the various described reinforcing and supporting members. When the concrete has hardened, the form is stripped, and thereis provided, in accordance with the invention, a structural arrangement in which plaster may be applied directly to the surface of the reinforced concrete or the surface may be ground without any chance of contacting metal reinforcing members or support means. Thus there is provided novel and unobvious means for eliminating the customary problems incident to rust bleed from reinforcing elements.
It will be understood by those skilled in the art that the above described embodiments are meant to be merely exemplary and that they are susceptible of modification and variation without departing from the spirit and scope of the invention. Therefore, it is deemed that the invention is not to be limited except as defined in the appended claims.
I claim:
1. A supporting device for supporting elongated reinforcing members at a predetermined distance above a removable surface serving as a form for the fabrication of a reinforced structure of hardenable construction material such as concrete, the reinforcing members and the support device being adapted to be embedded in and constitute a permanent part of the reinforced structure, comprising a preformed unitary support means including a longitudinally extending metallic support rod adapted to support at least one reinforcing member at at least one point of contact at a first predetermined distance above the removable surface and a plurality of spaced-apart transversely extending rigid metallic rods, each of said transversely extending rods being fixedly attached and in rigid relation to said support rod prior to fabrication of the reinforced structure at a point preestablished fixed distances along said longitudinally extending support rod from the points of attachment of others of said transversely extending rods and having a plurality of opposite ends extending from said longitudinally extending support rod for supporting said support rod relative to the removable surface, and individual preformed nonmetallic plastic contact members of predetermined configuration capable of withstanding compression during fabrication of the reinforced structure mounted on and having a channel formed therein of fixed predetermined dimensions with predetermined fixed spacings relative to the exterior of said respective member for fixedly receiving after fabrication a respective opposite end of one of said plurality of rods, each of said contact members supporting a respective one of said opposite ends of said plurality of transverse rods a second predetermined distance above the removable surface.
2. A reinforcing means adapted to be embedded in and constitute a permanent part of a reinforced structure of hardenable construction material such as concrete, comprising a preformed unitary support means including a longitudinally extending metallic member adapted to be positioned a first predetermined distance above a removable surface serving as a form for the fabrication of the reinforced structure and a plurality of spaced-apart transversely extending rigid metallic rods, each of said transversely extending rods being fixedly attached and in rigid relation to said member prior to fabrication of the reinforced structure at a point preestablished fixed distances along said longitudinally extending member from the points of attachment of others of said transversely extending rods and having a plurality of opposite ends extending from said longitudinally extending member for supporting said member relative to the removable surface, and individual preformed nonmetallic plastic contact members of predetermined configuration capable of withstanding compression during fabrication of the reinforced structure mounted on and having a channel formed therein of fixed predetermined dimensions with predetermined fixed spacings relative to the exterior of said respective member for fixedly receiving after fabrication a respective opposite end of one of said plurality of rods for supporting each of said opposite ends of said plurality of transverse rods 21 second predetermined distance above the removable surface.
3. A supporting device for supporting an elongated reinforcing member at a predetermined distance above a removable surface serving as a form for the fabrication of a reinforced structure of hardenable construction material such as concrete, the reinforcing member and the supporting device being adapted to be embedded in and constitute a permanent part of the reinforced structure, comprising a preformed unitary metallic support means adapted to support a reinforcing member a first predetermined distance above the removable sur-face, said metallic support means including at least a plurality of transversely extending rods in relatively rigid relation each having a plurality of opposite ends extending from said support means for supporting said support means relative to the removable surface, and individual preformed nonmetallic plastic contact members of predetermined configuration capable of withstanding compression during fabrication of the reinforced structure mounted on and having a channel formed therein of fixed predetermined dimensions with predetermined fixed spacings relative to the exterior of said respective member for fixedly receiving after fabrication a respective opposite end of one of said plurality of rods, each of said contact members supporting a respective one of said opposite ends of said plurality of transverse rods a second predetermined distance above the removable surface.
References Cited by the Examiner UNITED STATES PATENTS 1,178,939 4/1916 ODonnell 52-688 1,457,610 6/1923 White 52688 1,659,795 2/192'8 White 52684 1,769,465 7/1930 Rippstein 52-688 1,850,400 3/1932 Lampert 52-688 2,281,946 5/ 1942 ONeill 52-678 2,349,399 5/1944 Awbrey 52686 2,754,674 7/1956 Malsbury 52723 FOREIGN PATENTS 1,229,466 3/1960 France.
876,459 5/ 1953 Germany.
688,989 3/1953 Great Britain.
715,563 9/ 1954 Great Britain.
FRANK L. ABBOTT, Primary Examiner.
JACOB L. NACKENOF F CHARLES E. OCONNELL Examiners.
I. L. RIDGILL, Assistant Examiner.
Claims (1)
1. A SUPPORTING DEVICE FOR SUPORTING ELONGATED REINFORCING MEMBERS AT A PREDETERMINED DISTANCE ABOVE A REMOVABLE SURFACE SERVING AS A FORM FOR THE FABRICATION OF A REINFORCED STRUCTURE OF HARDENABLE CONSTRUCTION MATERIAL SUCH AS CONCRETE, THE REINFOCING MEMBERS, AND THE SUPPORT DEVICE BEING ADAPTED TO BE EMBEDDED IN SAND CONSTITUTE A PERMANENT PART OF THE REINFORCED STRUCTURE, COMPRISING A PREFORMED UNITARY SUPPORT MEANS INCLUDING A LONGITUDINALLY EXTENDING METALLIC SUPPORT ROD ADAPTED TO SUPPORT AT LEAST ONE REINFORCING MEMBER AT AT LEAST ONE POINT OF CONTACT AT A FIRST PREDETERMINED DISTANCE ABOVE THE REMOVABLE SURFACE AND A PLURALITY OF SPACED-APART TRANSVERSELY EXTENDING RIGID METALLIC RODS, EAHC OF SAID TRANSVERSELY EXTENDING RODS BEING FIXEDLY ATTACHED AND IN RIGID RELATION TO SAID SUPPORT AT A POINT PREESTABLISHED OF THE REINFORCED STRUCTURE AT A POINT PREESTABLISHED FIXED DISTANCES ALONG SAID LONGITUDINALLY EXTENDING SUPPORT ROD FROM THE POINTS OF ATTACHMENT OF OTHERS OF SAID TRANS-
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US344526A US3289378A (en) | 1964-02-10 | 1964-02-10 | Reinforcing rod support |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US344526A US3289378A (en) | 1964-02-10 | 1964-02-10 | Reinforcing rod support |
Publications (1)
Publication Number | Publication Date |
---|---|
US3289378A true US3289378A (en) | 1966-12-06 |
Family
ID=23350894
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US344526A Expired - Lifetime US3289378A (en) | 1964-02-10 | 1964-02-10 | Reinforcing rod support |
Country Status (1)
Country | Link |
---|---|
US (1) | US3289378A (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3488907A (en) * | 1966-12-16 | 1970-01-13 | Anders Bertil Aberg | Rust protection and distance device for reinforcing rod chairs |
US4080770A (en) * | 1974-08-06 | 1978-03-28 | Sandor Vigh | High chair spacer |
US4249354A (en) * | 1979-03-05 | 1981-02-10 | Wynn Gayle B | Reinforced insulated wall construction |
US4441527A (en) * | 1979-07-11 | 1984-04-10 | Tolliver Wilbur E | Concrete pipe reinforcement spacer bar |
US4467995A (en) * | 1979-07-11 | 1984-08-28 | Tolliver Wilbur E | Spacer bar and related method for concrete pipe manufacture |
US4744190A (en) * | 1985-03-11 | 1988-05-17 | Paul Couwenbergs | Spacing retainer including locking means for reinforcements |
US5363618A (en) * | 1990-03-22 | 1994-11-15 | Underwood Daniel C | Construction site safety |
US6772571B1 (en) * | 2002-08-19 | 2004-08-10 | Felix L. Sorkin | Upper beam bolster for use in construction |
US20070176062A1 (en) * | 2005-11-30 | 2007-08-02 | Itw Construction Products Australia Pty Ltd | Lifting anchor support |
US20150075110A1 (en) * | 2013-09-15 | 2015-03-19 | BFRE Pty Ltd. | Dual mesh level reinforcement bar support chair assembly |
JP2016008411A (en) * | 2014-06-24 | 2016-01-18 | 株式会社京都スペーサー | Manufacturing equipment and manufacturing method for reinforcement spacer |
US10975572B2 (en) * | 2019-03-14 | 2021-04-13 | Seong Wook Park | V-shaped tie hoop assembly |
US10988930B2 (en) * | 2017-08-28 | 2021-04-27 | Seong-Wook PARK | V-shaped tie reinforcement integrally provided with one-touch fixing device |
US11098488B2 (en) * | 2017-09-28 | 2021-08-24 | Toyoda Architects Office | Rebar spacer |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1178939A (en) * | 1915-08-18 | 1916-04-11 | John R O'donnell | Bar-chair used in concrete construction. |
US1457610A (en) * | 1921-01-29 | 1923-06-05 | William E White | Concrete spacer |
US1659795A (en) * | 1926-06-04 | 1928-02-21 | Kalman Steel Co | Bar chair |
US1769465A (en) * | 1929-05-27 | 1930-07-01 | Laclede Steel Company | Reenforcing unit for concrete beams |
US1850400A (en) * | 1930-06-21 | 1932-03-22 | Universal Form Clamp Co | Bar support and spacer |
US2281946A (en) * | 1939-02-25 | 1942-05-05 | Poirier & Mclane Corp | Screed support |
US2349399A (en) * | 1942-03-23 | 1944-05-23 | Awbrey William Powell | Reinforcing bar support |
GB688989A (en) * | 1950-12-19 | 1953-03-18 | Percival Clifford Kesteven | Improvements in or relating to spacing members for use with the reinforcement in reinforced concrete structures |
DE876459C (en) * | 1939-07-01 | 1953-05-15 | Dyckerhoff & Widmann Ag | Spacer for reinforced concrete reinforcement bars |
GB715563A (en) * | 1952-06-23 | 1954-09-15 | Ferdinand William Berry | Improvements in spacer members for the reinforcement of reinforced concrete |
US2754674A (en) * | 1953-03-02 | 1956-07-17 | William C Malsbury | Reinforced concrete beam support |
FR1229466A (en) * | 1959-07-08 | 1960-09-07 | spacer for reinforced concrete reinforcement |
-
1964
- 1964-02-10 US US344526A patent/US3289378A/en not_active Expired - Lifetime
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1178939A (en) * | 1915-08-18 | 1916-04-11 | John R O'donnell | Bar-chair used in concrete construction. |
US1457610A (en) * | 1921-01-29 | 1923-06-05 | William E White | Concrete spacer |
US1659795A (en) * | 1926-06-04 | 1928-02-21 | Kalman Steel Co | Bar chair |
US1769465A (en) * | 1929-05-27 | 1930-07-01 | Laclede Steel Company | Reenforcing unit for concrete beams |
US1850400A (en) * | 1930-06-21 | 1932-03-22 | Universal Form Clamp Co | Bar support and spacer |
US2281946A (en) * | 1939-02-25 | 1942-05-05 | Poirier & Mclane Corp | Screed support |
DE876459C (en) * | 1939-07-01 | 1953-05-15 | Dyckerhoff & Widmann Ag | Spacer for reinforced concrete reinforcement bars |
US2349399A (en) * | 1942-03-23 | 1944-05-23 | Awbrey William Powell | Reinforcing bar support |
GB688989A (en) * | 1950-12-19 | 1953-03-18 | Percival Clifford Kesteven | Improvements in or relating to spacing members for use with the reinforcement in reinforced concrete structures |
GB715563A (en) * | 1952-06-23 | 1954-09-15 | Ferdinand William Berry | Improvements in spacer members for the reinforcement of reinforced concrete |
US2754674A (en) * | 1953-03-02 | 1956-07-17 | William C Malsbury | Reinforced concrete beam support |
FR1229466A (en) * | 1959-07-08 | 1960-09-07 | spacer for reinforced concrete reinforcement |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3488907A (en) * | 1966-12-16 | 1970-01-13 | Anders Bertil Aberg | Rust protection and distance device for reinforcing rod chairs |
US4080770A (en) * | 1974-08-06 | 1978-03-28 | Sandor Vigh | High chair spacer |
US4249354A (en) * | 1979-03-05 | 1981-02-10 | Wynn Gayle B | Reinforced insulated wall construction |
US4441527A (en) * | 1979-07-11 | 1984-04-10 | Tolliver Wilbur E | Concrete pipe reinforcement spacer bar |
US4467995A (en) * | 1979-07-11 | 1984-08-28 | Tolliver Wilbur E | Spacer bar and related method for concrete pipe manufacture |
US4744190A (en) * | 1985-03-11 | 1988-05-17 | Paul Couwenbergs | Spacing retainer including locking means for reinforcements |
US5363618A (en) * | 1990-03-22 | 1994-11-15 | Underwood Daniel C | Construction site safety |
US6772571B1 (en) * | 2002-08-19 | 2004-08-10 | Felix L. Sorkin | Upper beam bolster for use in construction |
US20070176062A1 (en) * | 2005-11-30 | 2007-08-02 | Itw Construction Products Australia Pty Ltd | Lifting anchor support |
US7900880B2 (en) | 2005-11-30 | 2011-03-08 | Itw Construction Products Australia Pty Ltd | Lifting anchor support |
US20150075110A1 (en) * | 2013-09-15 | 2015-03-19 | BFRE Pty Ltd. | Dual mesh level reinforcement bar support chair assembly |
US9297163B2 (en) * | 2013-09-15 | 2016-03-29 | BFRE Pty Ltd. | Dual mesh level reinforcement bar support chair assembly |
AU2014224166B2 (en) * | 2013-09-15 | 2018-10-11 | Bfre Pty Ltd As Trustee | Dual Mesh Level Reinforcement Bar Chair Assembly |
JP2016008411A (en) * | 2014-06-24 | 2016-01-18 | 株式会社京都スペーサー | Manufacturing equipment and manufacturing method for reinforcement spacer |
US10988930B2 (en) * | 2017-08-28 | 2021-04-27 | Seong-Wook PARK | V-shaped tie reinforcement integrally provided with one-touch fixing device |
US11098488B2 (en) * | 2017-09-28 | 2021-08-24 | Toyoda Architects Office | Rebar spacer |
US10975572B2 (en) * | 2019-03-14 | 2021-04-13 | Seong Wook Park | V-shaped tie hoop assembly |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3289378A (en) | Reinforcing rod support | |
US4905440A (en) | Composite column or beam for building construction | |
SE416417B (en) | BACKGROUND BASE FOR STEEL CONCRETE CONSTRUCTIONS | |
NO144119B (en) | PROJECT LIGHTS WITH AN OPTION ELECTRONIC MEASURING DEVICE | |
US3430407A (en) | Spacer members for use in reinforced structures | |
US3550339A (en) | Component member of constructions | |
JPS60168862A (en) | Concrete floor panel | |
US3465484A (en) | Prestressed concrete beam | |
US973165A (en) | Concrete-slab construction. | |
US1159184A (en) | Forms for reinforced-concrete wall and column construction. | |
US3914915A (en) | Reinforcing mat structure for planar concrete construction units | |
SE431241B (en) | DEVICE FOR PLACING FLOORS OF CONCRETE | |
US3245191A (en) | Support for mesh-like structures, especially for use in reinforced concrete | |
US2962839A (en) | Precast concrete beam | |
DE3442912C2 (en) | ||
US2911819A (en) | Support for reenforcing steel for concrete structures | |
US3693311A (en) | Reinforcement elements for concrete structures | |
EP0333331A1 (en) | Structural concrete element | |
DE849480C (en) | Lightweight beams made of round steel as reinforcement of reinforced concrete ceiling structures | |
US1216644A (en) | Apparatus for constructing concrete floors. | |
DE1800858A1 (en) | Building panel, in particular for the manufacture of building ceilings | |
US1666157A (en) | Armored reenforced-concrete slab | |
US1173152A (en) | Reinforced concrete construction. | |
US1953101A (en) | Reenforced concrete floor and floor blocks | |
IL31725A (en) | Floor construction |