US3378985A - Concrete reinforcing bars with deep alveoli - Google Patents

Concrete reinforcing bars with deep alveoli Download PDF

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Publication number
US3378985A
US3378985A US326445A US32644563A US3378985A US 3378985 A US3378985 A US 3378985A US 326445 A US326445 A US 326445A US 32644563 A US32644563 A US 32644563A US 3378985 A US3378985 A US 3378985A
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United States
Prior art keywords
hexagon
ribs
flanks
sides
symmetrical
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Expired - Lifetime
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US326445A
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English (en)
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Bugan Anton
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Individual
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Individual
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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
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
    • E04C5/03—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete

Definitions

  • a reinforcing bar having the cross-section of a six-pointed star with transverse ribs, the flanks of which decline at 30 from the sides of the circumscribed hexagon, is known as one of the best.
  • this angle was reduced by wearing of the channels and the deepness of the alveoli became insuflicient to guarantee the required bond strength. Therefore, it was necessary to change the channels often and to interrupt the rolling two or three times during a shift. These costly channels with many transverse incisions were often elaborated upon, thus the consumption on rollers was excessive.
  • the transverse ribs reduce the strength of such bars under many repeated loads of bridges and similar structures.
  • the present invention is directed to a concrete reinforcing bar of a cross-section and of such surface shapes which guarantees the above-mentioned perfect unity with concrete, thus reducing the crack widths on the allowable measures, which facilitates manufacturing and regular bending of the bar.
  • the bar consists essentially of four pair of flanks which are symmetrical to one of the longest symmetrical axes SS and decline from the sides of the circumscribing hexagon at more than 30, and from the remaining two pair of symmetrical flanks which are nearly perpendicular to the axis SS declining from the sides of hexagon at nearly 30.
  • this bar has six basic deep grooves which are divided in deep, narrow and short alveoli by closely spaced transverse or diagonal ribs, flat with the side of the circumscribing hexagon.
  • angles over 30 between the flanks and the hexagon sides permit turning the grooves on rollers with two tools having one cutting edge or by means of a single tool with two edges without damaging the adjacent longitudinal ribs of the channel.
  • the diagonal ribs are advantageous for structures which are susceptible of repeated dynamical loadings.
  • the transverse forces caused by the inclination of the diagonal ribs are absorbed by the neighboring longitudinal ribs.
  • the bar according to this application can also be shaped in a different manner.
  • FIGURE 1 shows a bar, the cross section of which is a six point star with steep flanks, the longitudinal grooves being interrupted by diagonal ribs r inclined to left as viewed in the drawing.
  • FIGURE 2 shows a thick reinforcing bar of the basic cross section accordin to the FIGURE 1, but with two secondary longitudinal ribs in each of the six basic grooves having edges on the sides of the circumscribing hexagon.
  • the longitudinal grooves are interrupted by transverse ribs 1'.
  • FIGURE 3 shows a bar, the cross section of which consists of two halves of the cross section according to the FIGURE 1 (turned at among which three pairs of trapezoids are inserted having their edges on the side of the circumscribing prolonged hexagon.
  • the grooves are interrupted by ribs r, inclined to the right as viewed in the drawing.
  • a longitudinally grooved concrete reinforcing bar of six-pointed star shape in cross section including two pairs of flanks symmetrical to one of the longest symmetrical axes SS declining from the sides of the circumscribing hexagon at nearly 30, characterized by four pairs of main flanks symmetrical to said symmetrical axis and declining at an angle greater than 30 from the sides of the hexagon, and a plurality of diagonal ribs rolled in the longitudinal grooves of the bar.
  • the reinforcing bar according to claim 1 characterized by one secondary longitudinal rib located in the basic grooves of the bar, where as the edges of these ribs lie on sides of the circumscribing hexagon and their flanks have the same declination from the hexagon sides as the corresponding flanks of the basic grooves.
  • the reinforcing bar according to claim 1 characterized by a plurality of secondary longitudinal ribs located in the basic grooves of the bar, whereas the edges of these ribs lie on sides of the circumscribing hexagon and their flanks have the same declination from the hexagon sides as the corresponding flanks of the basic grooves.
  • the bar according to claim 1 characterized by a plurality of pairs of adjacent trapezoids formed perpendicularly to the longer symmetrical axis S-S between the two halves of the basic cross section, whereas the edges of the trapezoids lie on the sides of the circumscribing hexagon and the flanks decline from the latter at the same degree as the corresponding flanks of the basic grooves.
  • FRANK L. ABBOTT Primary Examiner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
US326445A 1962-11-29 1963-11-27 Concrete reinforcing bars with deep alveoli Expired - Lifetime US3378985A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT937962A AT234980B (de) 1962-11-29 1962-11-29 Betonbewehrungsstab

Publications (1)

Publication Number Publication Date
US3378985A true US3378985A (en) 1968-04-23

Family

ID=3613640

Family Applications (1)

Application Number Title Priority Date Filing Date
US326445A Expired - Lifetime US3378985A (en) 1962-11-29 1963-11-27 Concrete reinforcing bars with deep alveoli

Country Status (9)

Country Link
US (1) US3378985A (xx)
AT (1) AT234980B (xx)
DE (2) DE1484123A1 (xx)
DK (1) DK113173B (xx)
ES (1) ES293983A1 (xx)
GB (1) GB1031180A (xx)
LU (1) LU44883A1 (xx)
NL (2) NL140312B (xx)
OA (1) OA01752A (xx)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3915098A (en) * 1971-07-17 1975-10-28 Benvenuto Nania Method for the manufacture of a pallet of plastics material for storing different materials or products, device for carrying said method into practice obtained thereby
US4791772A (en) * 1987-05-01 1988-12-20 Potucek Frank R Concrete reinforcing bar support
WO1989011012A1 (en) * 1988-05-12 1989-11-16 Potucek Frank R Concrete reinforcing bar support
US20090235609A1 (en) * 2004-07-12 2009-09-24 Toshio Amanuma Rod with octagonal core purpose-built for civil construction
US8454416B1 (en) * 2011-09-09 2013-06-04 Donald J. Estes Concave with an array of longitudinally notched spaced apart threshing elements
US20140059975A1 (en) * 2012-09-06 2014-03-06 Chester Wright, III Reinforcement for Reinforced Concrete and Methods for Manufacturing Thereof
US20150135629A1 (en) * 2012-05-18 2015-05-21 Societe Civile De Brevets Matiere Grip reinforcing bar and method of producing same
US9243406B1 (en) 2015-01-21 2016-01-26 TS—Rebar Holding, LLC Reinforcement for reinforced concrete
USD915100S1 (en) * 2016-03-31 2021-04-06 Ocean 22, Llc Spooled item holding device
US11612929B2 (en) * 2017-01-30 2023-03-28 Gripmetal Limited Texture workpiece and method for texturing a workpiece
USD1032021S1 (en) * 2022-02-23 2024-06-18 Brian M. Adams Geometrical column unit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5950393A (en) * 1998-07-27 1999-09-14 Surface Technologies, Inc. Non-corrosive reinforcing member having bendable flanges

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2246578A (en) * 1939-02-24 1941-06-24 Salardi Albert Bernhard De Trussed structural member and method of and means for its manufacture
FR1189956A (fr) * 1957-09-28 1959-10-08 Barre d'armature pour béton armé à section en étoile
CA610712A (en) * 1960-12-20 Bugan Anton Reinforcement rods

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA610712A (en) * 1960-12-20 Bugan Anton Reinforcement rods
US2246578A (en) * 1939-02-24 1941-06-24 Salardi Albert Bernhard De Trussed structural member and method of and means for its manufacture
FR1189956A (fr) * 1957-09-28 1959-10-08 Barre d'armature pour béton armé à section en étoile

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3915098A (en) * 1971-07-17 1975-10-28 Benvenuto Nania Method for the manufacture of a pallet of plastics material for storing different materials or products, device for carrying said method into practice obtained thereby
US4791772A (en) * 1987-05-01 1988-12-20 Potucek Frank R Concrete reinforcing bar support
US4899515A (en) * 1987-05-01 1990-02-13 American Rebar, Inc. Concrete reinforcing bar support
WO1989011012A1 (en) * 1988-05-12 1989-11-16 Potucek Frank R Concrete reinforcing bar support
US20090235609A1 (en) * 2004-07-12 2009-09-24 Toshio Amanuma Rod with octagonal core purpose-built for civil construction
US8454416B1 (en) * 2011-09-09 2013-06-04 Donald J. Estes Concave with an array of longitudinally notched spaced apart threshing elements
USRE46401E1 (en) * 2011-09-09 2017-05-16 Donald J. Estes Concave with an array of longitudinally notched spaced apart threshing elements
US8690652B1 (en) 2011-09-09 2014-04-08 Donald J. Estes Longitudinally notched threshing element for an agricultural combine threshing concave
US20150135629A1 (en) * 2012-05-18 2015-05-21 Societe Civile De Brevets Matiere Grip reinforcing bar and method of producing same
US8915046B2 (en) * 2012-09-06 2014-12-23 Chester Wright, III Reinforcement for reinforced concrete and methods for manufacturing thereof
US20140059975A1 (en) * 2012-09-06 2014-03-06 Chester Wright, III Reinforcement for Reinforced Concrete and Methods for Manufacturing Thereof
US9243406B1 (en) 2015-01-21 2016-01-26 TS—Rebar Holding, LLC Reinforcement for reinforced concrete
USD915100S1 (en) * 2016-03-31 2021-04-06 Ocean 22, Llc Spooled item holding device
US11612929B2 (en) * 2017-01-30 2023-03-28 Gripmetal Limited Texture workpiece and method for texturing a workpiece
USD1032021S1 (en) * 2022-02-23 2024-06-18 Brian M. Adams Geometrical column unit

Also Published As

Publication number Publication date
DE6609641U (de) 1972-08-31
ES293983A1 (es) 1964-02-01
OA01752A (fr) 1969-12-15
NL301121A (xx)
AT234980B (de) 1964-08-10
LU44883A1 (xx) 1964-01-27
NL140312B (nl) 1973-11-15
DE1484123A1 (de) 1969-02-20
DK113173B (da) 1969-02-24
GB1031180A (en) 1966-05-25

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