Clip joint for connection of reinforcing bars and a wedge used t

Details Clip joint for connection of reinforcing bars and a wedge used t Clip joint for connection of reinforcing bars and a wedge used t

1991-09-03

1992-07-07

Kundrat, Andrew V.

Joints and connections

Distinct end coupler

Including member wedging or camming means

403393, 403390, 403374, F16B 202

Patent

active

051277638

ABSTRACT:
Joints having utility in connecting together concrete reinforcing bars are improved by adding teeth to preselected interior side walls of the joint to increase the frictional engagement between the rebars and the joint. In a first embodiment, the joint is of oblong construction and includes a pair of flat, parallel walls and a pair of transversely spaced, opposing curved walls that interconnect the flat walls. Plural, parallel rows of elongate teeth are formed in the interior surfaces of the curved walls, and the teeth are normal to the plane of the flat walls. Each flat wall is apertured and receives a wedge that drives the rebars in the joint away from one another and into the teeth. In a second embodiment, the joint has an elongate "U" shape including a pair of transversely spaced flat walls interconnected by a curved wall and plural parallel rows of elongate teeth are formed in the interior surface of the curved wall. Plural apertures are formed along the length of the flat walls and receive wedge members that drive axially aligned rebars into the teeth. A third embodiment includes a flat plate that interconnects the free ends of the flat walls of the second embodiment to secure them against movement. A first improved wedge member includes an insertion depth limiting base member and a second improved wedge includes a prominence on the trailing end of the depth limiting base member.

REFERENCES:
patent: 748056 (1903-12-01), Dulinsky
patent: 2092372 (1937-09-01), Goeller
patent: 4695178 (1987-09-01), Era et al.
patent: 4997306 (1991-03-01), Kunoki

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