Splice sleeve with elliptical or compound curve cross section

Abstract

A splice sleeve having an elliptical or compound curve cross section for connecting overlapping end portions of reinforcing bars utilized in various types of structures in which steel reinforcing bars are utilized and it is desired to connect the overlapping end portions of the reinforcing bars. The splice sleeve is configured to receive the overlapped end portions of the reinforcing bars and then be filled with hardenable material to resist axial tension and compression exerted on the reinforcing bars. In one embodiment, both ends of the sleeve are provided with an inwardly directed lip to increase the splicing capacity of the sleeve and also to serve as a guide to position the rebars to a minimum of about 3 mm from the inside wall surface of the sleeve.

Description

RELATED APPLICATION[0001]This is a continuation of U.S. application Ser. No. 13 / 191,922 filed on Jul. 27, 2011, the disclosure of which is hereby incorporated by reference in its entirety.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention generally relates to a splice sleeve tube device for joining the ends of at least two reinforcing bars utilized in various types of structures in which steel reinforcing bars are utilized, and it is desired to interconnect the overlapping end portions of such reinforcing bars. The splice sleeve tube device has an elliptical cross section or a curved cross section composed of curvatures of varying radii, referred to herein as a compound curve cross section, to receive and accommodate the end portions of the reinforcing bars in an overlapping relationship, with the splice sleeve being filled with hardenable material to resist axial tension or compression exerted on the reinforcing bars.[0004]2. Description of the Re...

AI Technical Summary

Benefits of technology

The splice sleeve presented in this patent is designed to hold hardenable material in tight confinement against the overlapping ends of reinforcing bars. It has an elliptical or compound curve cross section that receives and accommodates the overlapping ends of the bars. The sleeve has one or both ends inwardly directed lips to provide added restraint against the grout material and allow for a minimum thickness of the internal grout mass. The spattle sleeve is simple in construction, easy to assemble, and effective for securely restraining the overlapping ends of the bars. It helps to resist axial tension and / or compression exerted on the reinforcing bars.

Problems solved by technology

The hardenable material may contain an expansion agent which results in limited expansion of the grout mass that is firmly confined in the interior area of the tube sleeve.

The inclusion of an expansion agent can induce tremendous internal pressures on the lapped ends of the rebars which greatly increases the bonding and strength of the connection.

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