US3289379A - Hanger insert for prestressed concrete - Google Patents

Hanger insert for prestressed concrete Download PDF

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US3289379A
US3289379A US314937A US31493763A US3289379A US 3289379 A US3289379 A US 3289379A US 314937 A US314937 A US 314937A US 31493763 A US31493763 A US 31493763A US 3289379 A US3289379 A US 3289379A
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stem
insert
concrete
section
bore
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John L Watts
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/005—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects with anchoring or fastening elements for the shaped articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • B28B23/022—Means for inserting reinforcing members into the mould or for supporting them in the mould
    • B28B23/024—Supporting means
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • E04B1/4171—Nailable or non-threaded screwable elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/02—Wall, ceiling, or floor bases; Fixing pendants or arms to the bases
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • E04B2001/4192—Connecting devices specially adapted for embedding in concrete or masonry attached to concrete reinforcing elements, e.g. rods or wires

Definitions

  • This invention relates to a novel insert or anchor which is primarily adapted to be embedded in a prestressed concrete member, such as an overhead 'beam, and which is utilized for suspending a supporting bracket which may be employed for supporting various items such as electric conduits or electric fixtures.
  • Still a further object of the invention is to provide an insert which may be readily located in a concrete beam or the like for the attachment of the supporting bracket thereto.
  • Still a further object of the invention is to provide an insert which may be adjusted as to length to accommodate it to prestressed concrete members the bottom wire ropes of which are spaced different distances from bottom surfaces of the concrete members.
  • FIGURE 1 is a side elevational view of the insert in an applied position relative to a portion of a concrete beam and a portion of a mold for said beam;
  • FIGURE 2 is a vertical sectional view, partly in elevation, of the insert and showing a part of the concrete beam in cross section in which said insert is embedded;
  • FIGURE 3 is an elevational view of the insert, looking from left to right of FIGURE 2;
  • FIGURE 4 is a bottom plan view of a part of the concrete beam in which the insert is embedded.
  • FIGURE 5 is a fragmentary side elevational view, partly in vertical section, illustrating a modification of the insert.
  • the insert in its entirety and comprising the invention is designated generally 6 and includes a lower section, designated generally 7, and an upper section, designated generally 8.
  • the lower section 7 includes an upright stem 9 which is preferably of circular cross section and which includes a lower portion 10 and an upper portion 11.
  • the lower portion 10 is of a diameter somewhat greater than that of the upper portion 11.
  • the lower portion 10 is provided with a plurality, preferably four, arms 12 which extend radially therefrom and which are equally spaced relative to one another.
  • the arms 12 are spaced from the ends of said lower portion 10 and are disposed coplanar with one another.
  • a foot member 13 extends downwardly from each arm 12, near its outer end.
  • the lower ends of the corresponding foot members 13 are disposed coplanar with one another and with the fiat lower end 14 of the lower stem portion It
  • the stem 9 is provided with a blind bore 15 which extends upwardly from said lower end 14 thereof and which is tapered toward its upper end.
  • the tapered bore 15 preferably extends through the lower stern portion 10 and slightly into the upper stem portion 11. All of the aforedescribed parts of the lower section 7 constitute a one-piece molded plastic unit.
  • the upper section or head 8 likewise constitutes a onepiece molded plastic unit and includes a U-shaped top portion or yoke 16 from the base of which depends a 'ice downwardly opening socket or cap 17.
  • the cap or socket 17 is of a correct internal size to snugly receive the upper portion of the upper stem part 11.
  • said insert 6 is positioned in a bottom portion 18 of a conventional mold and with the foot members 13 and the base end 14 resting flush on the upper surface 19 of the mold bottom, and with the yoke 16 engaging under a portion of a lowermost tensioned wire rope 20, so that said wire rope portion seats in the yoke 16 for wedging the insert 6 between said wire rope portion and the surface 19.
  • Concrete 21 is then poured into the mold portion 18 and is subjected to vibration during pouring, as is conventional.
  • the inner surface of the steel mold portion 18 is highly polished and smoothed.
  • the insert 6 be wedged tightly between the wire rope 20 and the surface 19 in order to maintain the base end 14 and the terminals of the foot members 13 fiush against said surface 19 during pouring, vibration and setting of the concrete 21, so that thereafter when the form 18 is removed said terminals of the foot members and the stem base 14 will be exposed and flush with the bottom surface 22 of the prestressed concrete beam 21.
  • the prestressed concrete beam usually includes several vertically spaced tensioned wire ropes, corresponding to the wire rope 20. Since the insert 6 functions only in conjunction with the bottommost wire rope, the remain ing wire ropes have not been illustrated.
  • the upper section 8 is constructed separable from the lower section 7 because the bottom tensioned wire rope 20 may be spaced different distances from the surface 19. Accordingly, the stem portion 11 may initially be made longer than as shown and cut off to a proper length, as illustrated in FIGURES 1 and 2, before application of the upper section or head 8.
  • the bracket 24 may be utilized for supporting such items as electrical fixtures or electrical conduits.
  • the exposed base 14 with its bore 15, surrounded by the exposed terminals of the foot members 131, will enable the bore 15 to be readily located for application of the fastening 23 thereto.
  • the arms 12 assist in effectively anchoring the insert 6 in the concrete 21.
  • the bracket 24 is capable of supporting a constant pull in excess of two hundred pounds without risk of the fastening 23 being pulled from the bore 15.
  • FIGURE 5 illustrates a modification of the insert which includes, in addition to the lower section 7 and upper section 8, an intermediate section, designated generally 25, and which includes an elongated stem 26 of the same cross sectional size and shape as the upper stem portion 11 and which is provided at its lower end with a downwardly opening socket 27, corresponding to the socket 17.
  • the socket 27 engages detachably over the upper end of the stem 11, in the same manner as the socket 17, and the upper end of the stem 26 fits into the socket 17, in the same manner as the stem portion 11.
  • the upper end of the stem 26 may be cut off to vary the over-all length of the insert 28, as illustrated in FIGURE 5, to accommodate said insert to wire ropes spaced different distances from the bottom surface 19 of the form.
  • An insert for a concrete structural member adapted to be wedged between a part of a metal form and a lowermost tensioned wire rope disposed parallel to said form part comprising, a lower section and an upper section, said lower section comprising an upright stem having a substantially fiat bottom surface adapted to rest flush on an upper surface of a part of a form, said stem having a longitudinal bore opening outwardly of said bottom surface, arms extending radially from said stem and disposed above and spaced from said bottom surface and in spaced apart relation to one another, solid foot members depending from outer portions of said arms and having lower ends disposed coplanar with one another and with said bottom surface and adapted to rest on said upper surface of the form part; said upper section comprising a downwardly opening socket having a smooth bore engaging detachably over a smooth exterior of the upper end of said stem and an upwardly opening yoke, consisting of a base portion and upstanding spaced apart terminal elements, in which a tensioned wire rope is adapted to seat for Wedging the insert between the wire
  • said upper section and said lower section each constituting a one-piece plastic unit, said stem including a lower portion and an upper portion, said arms being disposed intermediate of the ends of the lower portion, said upper portion being of smaller cross sectional size than the lower portion of uniform cross sectional size throughout its length and being adapted to be cut off for varying the overall length of the stern and the overall height of the assembled insert.
  • An insert for a concrete structural member adapted to be wedged betweena part of a metal form and a lowermost tensioned wire rope disposed parallel to said form part comprising, a lower section and an upper section, said lower section comprising an upright stem having a substantially fiat bottom surface adapted to rest flush on an upper surface of a part of a form, said stem having a longitudinal bore opening outwardly of said bottom surface, arms extending radially from said stem and disposed above and spaced from said bottom surface and in spaced apart relation to one another, foot members depending from outer portions of said arms and having lower ends disposed coplanar with one another and with said bottom surface and adapted to rest on said upper surface of the form part; said upper section comprising a downwardly opening socket engaging detachably over the upper end of said stemand an upwardly opening yoke in which a tensioned wire rope is adapted to seat for'wedging the insert between the wire rope and said upper surface of the form part to be embedded in concrete applied to said form such that said bottom surface of the stem and

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Description

H LIA & WW ,1. 1... WATTS HANGER INSERT FOR PRESTRESSED CONCRETE Filed Oct. 9, 1965 INVENTOR t HN WA 775 ATTORNEY United States Patent 3,289,379 HANGER INSERT FOR PRESTRESSED CONCRETE John L. Watts, RD. 1, Box 1905, Port Orange, Fla. Filed Oct. 9, 1963, Ser. No. 314,937 Claims. (Cl. 52-689) This invention relates to a novel insert or anchor which is primarily adapted to be embedded in a prestressed concrete member, such as an overhead 'beam, and which is utilized for suspending a supporting bracket which may be employed for supporting various items such as electric conduits or electric fixtures.
More particularly, it is an object of the present invention to provide a concrete insert or embedded anchor which may be formed entirely of plastic and which will facilitate the attachment thereto of a fastening of the supporting bracket.
Still a further object of the invention is to provide an insert which may be readily located in a concrete beam or the like for the attachment of the supporting bracket thereto.
Still a further object of the invention is to provide an insert which may be adjusted as to length to accommodate it to prestressed concrete members the bottom wire ropes of which are spaced different distances from bottom surfaces of the concrete members.
Various other objects and advantages of the invention will hereinafter become more fully apparent from the following description of the drawing, illustrating presently preferred embodiments thereof, and wherein:
FIGURE 1 is a side elevational view of the insert in an applied position relative to a portion of a concrete beam and a portion of a mold for said beam;
FIGURE 2 is a vertical sectional view, partly in elevation, of the insert and showing a part of the concrete beam in cross section in which said insert is embedded;
FIGURE 3 is an elevational view of the insert, looking from left to right of FIGURE 2;
FIGURE 4 is a bottom plan view of a part of the concrete beam in which the insert is embedded, and
FIGURE 5 is a fragmentary side elevational view, partly in vertical section, illustrating a modification of the insert.
Referring more specifically to the drawing, and first with reference to FIGURES 1 to 4, the insert in its entirety and comprising the invention is designated generally 6 and includes a lower section, designated generally 7, and an upper section, designated generally 8. The lower section 7 includes an upright stem 9 which is preferably of circular cross section and which includes a lower portion 10 and an upper portion 11. The lower portion 10 is of a diameter somewhat greater than that of the upper portion 11. The lower portion 10 is provided with a plurality, preferably four, arms 12 which extend radially therefrom and which are equally spaced relative to one another. The arms 12 are spaced from the ends of said lower portion 10 and are disposed coplanar with one another. A foot member 13 extends downwardly from each arm 12, near its outer end. The lower ends of the corresponding foot members 13 are disposed coplanar with one another and with the fiat lower end 14 of the lower stem portion It The stem 9 is provided with a blind bore 15 which extends upwardly from said lower end 14 thereof and which is tapered toward its upper end. The tapered bore 15 preferably extends through the lower stern portion 10 and slightly into the upper stem portion 11. All of the aforedescribed parts of the lower section 7 constitute a one-piece molded plastic unit.
The upper section or head 8 likewise constitutes a onepiece molded plastic unit and includes a U-shaped top portion or yoke 16 from the base of which depends a 'ice downwardly opening socket or cap 17. The cap or socket 17 is of a correct internal size to snugly receive the upper portion of the upper stem part 11.
Assuming that the sections 7 and 8 are assembled together, as illustrated in FIGURES 1 to 3, to form the insert or anchor 6, said insert 6 is positioned in a bottom portion 18 of a conventional mold and with the foot members 13 and the base end 14 resting flush on the upper surface 19 of the mold bottom, and with the yoke 16 engaging under a portion of a lowermost tensioned wire rope 20, so that said wire rope portion seats in the yoke 16 for wedging the insert 6 between said wire rope portion and the surface 19. Concrete 21 is then poured into the mold portion 18 and is subjected to vibration during pouring, as is conventional. The inner surface of the steel mold portion 18 is highly polished and smoothed. Accordingly, it is essential that the insert 6 be wedged tightly between the wire rope 20 and the surface 19 in order to maintain the base end 14 and the terminals of the foot members 13 fiush against said surface 19 during pouring, vibration and setting of the concrete 21, so that thereafter when the form 18 is removed said terminals of the foot members and the stem base 14 will be exposed and flush with the bottom surface 22 of the prestressed concrete beam 21.
The prestressed concrete beam usually includes several vertically spaced tensioned wire ropes, corresponding to the wire rope 20. Since the insert 6 functions only in conjunction with the bottommost wire rope, the remain ing wire ropes have not been illustrated. The upper section 8 is constructed separable from the lower section 7 because the bottom tensioned wire rope 20 may be spaced different distances from the surface 19. Accordingly, the stem portion 11 may initially be made longer than as shown and cut off to a proper length, as illustrated in FIGURES 1 and 2, before application of the upper section or head 8.
A tapered metal screw 23, which extends upwardly through a conventional hanger bracket 24, is screwed into the bore 15 and in being applied thereto will tap said bore. The bracket 24 may be utilized for supporting such items as electrical fixtures or electrical conduits. By utilizing a self-tapping screw 23 in the bore of the plastic stem 9, if it is necessary to remove the fastening 23, it can always be replaced with a slightly larger fastening for re-tapping the bore 15.
The exposed base 14 with its bore 15, surrounded by the exposed terminals of the foot members 131, will enable the bore 15 to be readily located for application of the fastening 23 thereto. The arms 12 assist in effectively anchoring the insert 6 in the concrete 21. The insert 6, although being made of plastic, becomes practically indestructible due to being embedded in the concrete and as it is not exposed to sunlight it will not oxidize. The plastic is slow burning and an immense amount of heat is necessary to ignite it. The bracket 24 is capable of supporting a constant pull in excess of two hundred pounds without risk of the fastening 23 being pulled from the bore 15.
In some instances, the lowermost wire rope 20 is spaced a considerable distance from the bottom surface 19 of the form 18. FIGURE 5 illustrates a modification of the insert which includes, in addition to the lower section 7 and upper section 8, an intermediate section, designated generally 25, and which includes an elongated stem 26 of the same cross sectional size and shape as the upper stem portion 11 and which is provided at its lower end with a downwardly opening socket 27, corresponding to the socket 17. The socket 27 engages detachably over the upper end of the stem 11, in the same manner as the socket 17, and the upper end of the stem 26 fits into the socket 17, in the same manner as the stem portion 11. Like the stem portion 11, the upper end of the stem 26 may be cut off to vary the over-all length of the insert 28, as illustrated in FIGURE 5, to accommodate said insert to wire ropes spaced different distances from the bottom surface 19 of the form.
Various other modifications and changes are contemplated and may be resorted to, Without departing from the function or scope of the invention as hereinafter defined by the appended claims.
I claim as my invention:
1. An insert for a concrete structural member adapted to be wedged between a part of a metal form and a lowermost tensioned wire rope disposed parallel to said form part comprising, a lower section and an upper section, said lower section comprising an upright stem having a substantially fiat bottom surface adapted to rest flush on an upper surface of a part of a form, said stem having a longitudinal bore opening outwardly of said bottom surface, arms extending radially from said stem and disposed above and spaced from said bottom surface and in spaced apart relation to one another, solid foot members depending from outer portions of said arms and having lower ends disposed coplanar with one another and with said bottom surface and adapted to rest on said upper surface of the form part; said upper section comprising a downwardly opening socket having a smooth bore engaging detachably over a smooth exterior of the upper end of said stem and an upwardly opening yoke, consisting of a base portion and upstanding spaced apart terminal elements, in which a tensioned wire rope is adapted to seat for Wedging the insert between the wire rope and said upper surface of the form part to be embedded in concrete applied to said form such that said bottom surface of the stern and the lower ends of said foot members will be exposed when the form is removed from the set concrete, said bore being adapted to receive and secure a hanger bracket fastening to the insert for suspending a hanger bracket therebeneath and beneath the concrete structural member.
2. An insert as in claim 1, said lower section and said upper section each constituting a one-piece plastic unit.
3. An insert as in claim 1, said upper section and said lower section each constituting a one-piece plastic unit, said stem including a lower portion and an upper portion, said arms being disposed intermediate of the ends of the lower portion, said upper portion being of smaller cross sectional size than the lower portion of uniform cross sectional size throughout its length and being adapted to be cut off for varying the overall length of the stern and the overall height of the assembled insert.
4Q An insert for a concrete structural member adapted to be wedged betweena part of a metal form and a lowermost tensioned wire rope disposed parallel to said form part comprising, a lower section and an upper section, said lower section comprising an upright stem having a substantially fiat bottom surface adapted to rest flush on an upper surface of a part of a form, said stem having a longitudinal bore opening outwardly of said bottom surface, arms extending radially from said stem and disposed above and spaced from said bottom surface and in spaced apart relation to one another, foot members depending from outer portions of said arms and having lower ends disposed coplanar with one another and with said bottom surface and adapted to rest on said upper surface of the form part; said upper section comprising a downwardly opening socket engaging detachably over the upper end of said stemand an upwardly opening yoke in which a tensioned wire rope is adapted to seat for'wedging the insert between the wire rope and said upper surface of the form part to be embedded in concrete applied to said form such that said bottom surface of the stem and the lower ends of said foot members will be exposed when the form is removed from the set concrete, said bore being adapted to receive and secure a hanger bracket fastening to the insert for suspending a hanger bracket therebeneath and beneath the concrete structural member, said stem including a detachable upper portion defining an intermediate section of the insert having an upper end engaging detachably in said downwardly opening socket of the upper section and a lower end provided with a down wardly opening socket receiving a portion of the stern of said lower section. I
5. An insert as in claim 4, said lower section, upper section and intermediate section each constituting a onepiece plastic unit.
References Cited by the Examiner UNITED STATES PATENTS 1,088,290 2/1914 McAllister et a1. 52-699 1,218,378 3/1917 Dippel 52-704 1,677,140 7/1928 Ketterman 52-688 X 2,306,671 12/1942 Tamblyn 52-678 2,867,041 1/1959 McMillan 52-704 X 3,099,108 7/1963 Kalkbrenner 52-701 X 3,209,509 10/1965 OCallaghan 52-688 3,225,506 12/1965 Aberg 52-687 FOREIGN PATENTS 233,066 1/1961 Australia.
RICHARD W. COOKE, 111., Primary Examiner. FRANK L. ABBOTT, Examiner. A. C. PERHAM, Assistant Examiner.

Claims (1)

1. AN INSERT FOR A CONCRETE STRUCTURAL MEMBER ADAPTED TO BE WEDGED BETWEEN A PART OF A METAL FORM AND A LOWERMOST TENSIONED WIRE ROPE DISPOSED PARALLEL TO SAID FORM PART COMPRISING, A LOWER SECTION AND AN UPPER SECTION, SAID LOWER SECTION COMPRISING AN UPRIGHT STEM HAVING A SUBSTANTIALY FLAT BOTTOM SURFACE ADAPTED TO REST FLUSH ON AN UPPER SURFACE OF A PART OF A FORM, SAID STEM HAVING A LONGITUDINAL BORE OPENING OUTWARDLY OF SAID BOTTOM SURFACE, ARMS EXTENDING RADIALLY FROM SAID STEM AND DISPOSED ABOVE AND SPACED FROM SAID BOTTOM SURFACE AND IN SPACED APART RELATION TO ONE ANOTHER, SOLID FOOT MEMBERS DEPENDING FROM OUTER PORTIONS OF SAID ARMS AND HAVING LOWER ENDS DISPOSED COPLANAR WITH ONE ANOTHER AND WITH SAID BOTTOM SURFACE AND ADAPTED TO REST ON SAID UPPER SURFACE OF THE FORM PART; SAID UPPER SECTION COMPRISING A DOWNWARDLY OPENING SOCKET HAVING A SMOOTH BORE ENGAGING DETACHABLY OVER A SMOOTH EXTERIOR OF THE UPPER END OF SAID STEM AND AN UPWARDLY OPENING YOKE, CONSISTING OF A BASE PORTION AND UPSTANDING SPACED APART TERMINAL ELEMENTS, IN WHICH A TENSIONED WIRE ROPE IS ADAPTED TO SEAT FOR WEDGING THE INSERT BETWEEN THE WIRE AND SAID UPPER SURFACE OF THE FORM PART TO BE EMBEDDED IN CONCRETE APPLIED TO SAID FORM SUCH THAT SAID BOTTOM SURFACE OF THE STEM AND THE LOWER ENDS OF SAID FOOT MEMBERS WILL BE EXPOSED WHEN THE FORM IS REMOVED FROM THE SET CONCRETE, SAID BORE BEING ADAPTED TO RECEIVE AND SECURE A HANGER BRACKET FASTENING TO THE INSERT FOR SUSPENDING A HANGER BRACKET THEREBENEATH SAID BENEATH THE CONCRETE STRUCTURAL MEMBER.
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Cited By (19)

* Cited by examiner, † Cited by third party
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US3813834A (en) * 1970-05-28 1974-06-04 Prod Eng Inc Joist with nailing strip and positioning members
US3830032A (en) * 1972-09-21 1974-08-20 Prod Corp T Mesh chair for concrete reinforcement
US4018470A (en) * 1975-06-09 1977-04-19 Superior Concrete Accessories, Inc. Anchor insert for embedment in a concrete slab
US4060954A (en) * 1972-11-03 1977-12-06 Liuzza James J Bar chair for reinforcing rods
US4073114A (en) * 1977-04-01 1978-02-14 Unistrut Corporation Insert assembly for use in pre-stressed concrete structures
US4080770A (en) * 1974-08-06 1978-03-28 Sandor Vigh High chair spacer
US4498270A (en) * 1982-04-12 1985-02-12 Preco Industries Limited Support for positioning reinforcing rods or mesh in concrete or the like
US4800702A (en) * 1986-03-03 1989-01-31 Wheeler Charles F Steel placement member
US4821474A (en) * 1987-08-24 1989-04-18 Alan Rodriguez Post-tensioning anchor
US5024032A (en) * 1987-08-24 1991-06-18 Alan Rodriguez Post-tensioning anchor
US5058469A (en) * 1989-08-21 1991-10-22 Alan Rodriguez Cable shear and clamp system
US5079879A (en) * 1987-08-24 1992-01-14 Alan Rodriguez Anti-corrosive post-tensioning anchorage system
US5347777A (en) * 1993-04-23 1994-09-20 Post Tension Product Mfg., Inc. Anchor plate assembly
WO1996006992A1 (en) * 1994-08-25 1996-03-07 Ezi-Fix Anchors Pty Ltd Support anchor for concrete structures
US6212848B1 (en) * 1998-11-23 2001-04-10 Henry R. Cooper Construction chair with plastic base
US6327825B1 (en) * 2000-04-24 2001-12-11 Charles Pankow Builders Ltd. Method and apparatus for use in positioning high-strength cables within a precast moment resisting frame
US20050102951A1 (en) * 2003-11-14 2005-05-19 Aztec Concrete Accessories, Inc. Multi-level post tension cable support chair and method of use
US20080047223A1 (en) * 2004-06-30 2008-02-28 Suehiro-System Co., Ltd. Composite Anchor Bolt and Method for Installation
WO2020160833A1 (en) * 2019-02-06 2020-08-13 Pino Albanese Mounting system for mounting an anchoring device and method for mounting an anchoring device on a partial construction made of concrete

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US1088290A (en) * 1913-04-09 1914-02-24 Archie T Mcallister Hanger for concrete work.
US1218378A (en) * 1916-02-09 1917-03-06 Harry Dippel Concrete-insert.
US1677140A (en) * 1927-09-10 1928-07-17 John S Ketterman Building construction
US2306671A (en) * 1941-06-17 1942-12-29 Gordon M Tamblyn Concrete screed and guide
US2867041A (en) * 1957-04-10 1959-01-06 Mcmillan Floor Products Compan Screed support and method of using
US3099108A (en) * 1959-04-29 1963-07-30 William F Kalkbrenner Anchor for securing electrical fixtures and the like to concrete walls
US3209509A (en) * 1961-12-05 1965-10-05 Universal Builders Supply Co I Devices for concrete reinforcement
US3225506A (en) * 1960-05-12 1965-12-28 Aberg Anders Bertil Fastener and distance means for tubes and conductors

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1088290A (en) * 1913-04-09 1914-02-24 Archie T Mcallister Hanger for concrete work.
US1218378A (en) * 1916-02-09 1917-03-06 Harry Dippel Concrete-insert.
US1677140A (en) * 1927-09-10 1928-07-17 John S Ketterman Building construction
US2306671A (en) * 1941-06-17 1942-12-29 Gordon M Tamblyn Concrete screed and guide
US2867041A (en) * 1957-04-10 1959-01-06 Mcmillan Floor Products Compan Screed support and method of using
US3099108A (en) * 1959-04-29 1963-07-30 William F Kalkbrenner Anchor for securing electrical fixtures and the like to concrete walls
US3225506A (en) * 1960-05-12 1965-12-28 Aberg Anders Bertil Fastener and distance means for tubes and conductors
US3209509A (en) * 1961-12-05 1965-10-05 Universal Builders Supply Co I Devices for concrete reinforcement

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3813834A (en) * 1970-05-28 1974-06-04 Prod Eng Inc Joist with nailing strip and positioning members
US3919824A (en) * 1970-05-28 1975-11-18 Jr George Bradley Davis Joist, structural element and devices used in making same
US3830032A (en) * 1972-09-21 1974-08-20 Prod Corp T Mesh chair for concrete reinforcement
US4060954A (en) * 1972-11-03 1977-12-06 Liuzza James J Bar chair for reinforcing rods
US4080770A (en) * 1974-08-06 1978-03-28 Sandor Vigh High chair spacer
US4018470A (en) * 1975-06-09 1977-04-19 Superior Concrete Accessories, Inc. Anchor insert for embedment in a concrete slab
US4073114A (en) * 1977-04-01 1978-02-14 Unistrut Corporation Insert assembly for use in pre-stressed concrete structures
US4498270A (en) * 1982-04-12 1985-02-12 Preco Industries Limited Support for positioning reinforcing rods or mesh in concrete or the like
US4800702A (en) * 1986-03-03 1989-01-31 Wheeler Charles F Steel placement member
US5079879A (en) * 1987-08-24 1992-01-14 Alan Rodriguez Anti-corrosive post-tensioning anchorage system
US5024032A (en) * 1987-08-24 1991-06-18 Alan Rodriguez Post-tensioning anchor
US4821474A (en) * 1987-08-24 1989-04-18 Alan Rodriguez Post-tensioning anchor
US5058469A (en) * 1989-08-21 1991-10-22 Alan Rodriguez Cable shear and clamp system
US5347777A (en) * 1993-04-23 1994-09-20 Post Tension Product Mfg., Inc. Anchor plate assembly
GB2307494B (en) * 1994-08-25 1998-03-25 Ezi Fix Anchors Pty Ltd Support anchor for concrete structures
GB2307494A (en) * 1994-08-25 1997-05-28 Ezi Fix Anchors Pty Ltd Support anchor for concrete structures
WO1996006992A1 (en) * 1994-08-25 1996-03-07 Ezi-Fix Anchors Pty Ltd Support anchor for concrete structures
US6212848B1 (en) * 1998-11-23 2001-04-10 Henry R. Cooper Construction chair with plastic base
US6327825B1 (en) * 2000-04-24 2001-12-11 Charles Pankow Builders Ltd. Method and apparatus for use in positioning high-strength cables within a precast moment resisting frame
US20050102951A1 (en) * 2003-11-14 2005-05-19 Aztec Concrete Accessories, Inc. Multi-level post tension cable support chair and method of use
US7497059B2 (en) 2003-11-14 2009-03-03 Dayton Superior Corporation Multi-level post tension cable support chair and method of use
US20080047223A1 (en) * 2004-06-30 2008-02-28 Suehiro-System Co., Ltd. Composite Anchor Bolt and Method for Installation
US8087211B2 (en) * 2004-06-30 2012-01-03 Suehiro-System Co., Ltd. Composite anchor bolt and method for installation
WO2020160833A1 (en) * 2019-02-06 2020-08-13 Pino Albanese Mounting system for mounting an anchoring device and method for mounting an anchoring device on a partial construction made of concrete

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