Concrete reinforcing bar support
AssigneeAmerican Rebar, Inc.
InventorFrank R. Potucek
Life of this patent
Estimating the term…
Abstract
A horizontally extending reinforcing bar having a central core in transverse cross-section exhibiting at least three radial fins projecting outwardly symmetrically from the center of the bar to its outer edge. Each pair of adjacent fins define a valley between them containing a pattern of raised surface area. Two in-line reinforcing bars are held together by a coupling device having a housing with multiple flexible inwardly projecting plates from grooves in an inner wall. The plates flex in the direction of insertion of a reinforcing bar and exert a force to prevent removal of the bar.
Claims22
An elongate concrete reinforcing bar or rebar having a transverse cross section in the form of a five pointed star and wherein five fins extend radially from a central core of said rebar at equidistantly and circumferentially spaced intervals to define a common fin-included angle between each contiguous pair of fins, wherein a diameter of an imaginary circle coincident with the radially outermost edges of said fins is about three times greater than a diameter of said central core, wherein an elongate cup-shaped bight is formed along the extent of said rebar where contiguous fins join said central core, and wherein a plurality of longitudinally extending raised surface areas having concave bights are formed along the extent of said elongate cup-shaped bight.
An elongate concrete reinforcing bar or rebar having a transverse cross section in the form of a five pointed star and wherein five fins extend radially from a central core of said rebar at equidistantly and circumferentially spaced intervals to define a common fin-included angle between each contiguous pair of fins, wherein a diameter of an imaginary circle coincident with the radially outermost edges of said fins is about four times greater than a diameter of said central core, wherein an elongate concave bight is formed along the extent of said rebar where contiguous fins join said central core, and wherein a plurality of longitudinally spaced, transversely disposed web means having concave bights are formed at preselected intervals along the extent of said elongate concave bight.
An elongate concrete reinforcing bar or rebar having a cross section in the form of at least a three pointed star and wherein fins extend radially from a central core of said rebar at equidistantly and circumferentially spaced intervals to define a common fin-included angle between each contiguous pair of fins, wherein an imaginary circle coincident with the radially outermost edges of said fins has a diameter between three to four times greater than the diameter of said central core, wherein an elongate concave bight is formed along the extent of said rebar where contiguous fins join said central core, and wherein a plurality of longitudinally spaced, transversely disposed web means having concave bights are formed at preselected intervals along the extent of said elongate concave bight.
Dependencies are inferred from the claim text.