Abstract: Embodiments of the present invention generally relate to a method and an apparatus for connecting adjacent concrete structures. In one aspect, a coupling assembly for connecting adjacent concrete structures erected for street, roadway or highway use is provided. The coupling assembly includes a first anchor device with a female end comprising a socket having at least one slot. The coupling assembly further includes a second anchor device with a male end comprising at least one projection configured to mate with the at least one slot in the socket, wherein the second anchor device is movable from a first position to a second position in order to couple the male end to the female end. In another aspect, a method of coupling a first anchor device to a second anchor device is provided.

Abstract: The present invention generally relates to methods and apparatus for protecting a coupling that is disposable within a concrete structure. In one aspect, a cap for engaging a coupling of a cement coupler bar is provided. The cap includes a body having an engagement portion and a back portion, wherein the engagement portion is configured to engage the coupling of the cement coupler bar. Additionally, the cap includes a flexible tail having a first end and a second end, wherein the first end is attached to the back portion of the body. In another aspect, a method of using a protective cap with a coupling of a cement coupler bar is provided. In a further aspect, a coupler bar assembly for use in reinforcing a cement structure is provided.

Abstract: A structure for clamping two rods mutually transverse to one another is described. An upwardly open seating surface has a longitudinal direction for rotationally vertically receiving a first rod in the longitudinal direction. A pair of side opening rod retainers are supported above and on opposite sides of the upwardly open longitudinal seating surface. The side openings of the retainers open in opposite directions for rotationally laterally receiving opposite sides of a second rod along a direction transverse to the longitudinal direction. The retainers include top portions spaced from the lower seating surface a distance effective to cause a rod rotationally laterally received in the side openings to exert a compressive force against a rod rotationally vertically received on the lower seating surface, thereby clamping the rods mutually transversely to each other.

Abstract: The present invention generally relates to methods and apparatus for protecting a coupling that is disposable within a concrete structure. In one aspect, a cap for engaging a coupling of a cement coupler bar is provided. The cap includes a body having an engagement portion and a back portion, wherein the engagement portion is configured to engage the coupling of the cement coupler bar. Additionally, the cap includes a flexible tail having a first end and a second end, wherein the first end is attached to the back portion of the body. In another aspect, a method of using a protective cap with a coupling of a cement coupler bar is provided. In a further aspect, a coupler bar assembly for use in reinforcing a cement structure is provided.