US 5,308,184 AGranted

Method and apparatus for mechanically joining concrete-reinforcing rods

AssigneeTechniport S.A.

InventorAlain Bernard

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Abstract

A mechanical connection for concrete reinforcing rods has a connecting sleeve and a reinforcing rods having protuberances (e.g., ribs or fins) on their outer surfaces. Each of the reinforcing rods has a threaded end for connection with the connecting sleeve, which has tapped portions for receiving the reinforcing rods. In one embodiment, a first end of a first reinforcing rod is passed completely through the sleeve, and the sleeve is then rotated about the end while simultaneously being screwed onto a second end of a second reinforcing rod. Upon tightening the connecting sleeve, the ends of the first and second reinforcing rods are placed in substantially coaxial, end-to-end arrangement, and are rotationally immobile. In a preferred embodiment, the connecting sleeve comprises a sheath having a conical bore, together with a conical socket in the form of two shell halves, which, when place together, provide two internal tapped portions having opposing threads.

Claims14

Dependent claims

A mechanical connection, particularly for application in the field of concrete element construction, comprising:

a first reinforcing rod comprising a first threaded end, said first reinforcing rod further comprising protuberances on an external surface thereof;
a second reinforcing rod comprising a second threaded end, said second reinforcing rod further comprising protuberances on an external surface thereof;
a connecting sleeve having a first tapped portion for receiving said first threaded end of said first reinforcing rod, and a second tapped portion for receiving said second end of said second reinforcing rod, and means for allowing said connecting sleeve to be rotated around said first end while simultaneously threadedly engaging said second end on said second reinforcing rod, so that said first and second ends are positioned substantially coaxially and in substantially end-to-end relationship, and are rotationally immobile with respect to one another, at least one of said first and second tapped portions is rotatable with respect to said sleeve, and at least one of said first and second tapped portions permits longitudinal deflection to adjust said threads of said first and second ends;
and
said connecting sleeve comprising a sheath having a conical bore therein, and a conical socket positioned in said conical bore, said conical socket comprising a plurality of conical socket members having external portions enabling longitudinal rotation and blockage with respect to said sheath, said conical socket members together providing a threaded inner bore comprising said first tapped portion and said second tapped portion, wherein said first and second tapped portions have opposed threads.

2 more elements

A connecting sleeve for connecting concrete reinforcing rods, comprising a first tapped portion for receiving a first tapped end of a first reinforcing rod, and a second tapped portion for receiving a second end of a second reinforcing rod, and means to allow said connecting sleeve to be rotated around said first end while simultaneously threadedly engaging said second end on said second reinforcing rod, so that said first and second ends are positioned substantially coaxially and in substantially end-to-end relationship, and are rotationally immobile with respect to one another, at least one of said first and second tapped portions is rotatable with respect to said sleeve, and at least one of said first and second tapped portions permits longitudinal deflection to adjust said threads of said first and second ends;

and
said connecting sleeve comprising a sheath having a conical bore therein, and a conical socket positioned in said conical bore, said conical socket comprising a plurality of conical socket members having external portions enabling longitudinal rotation and blockage with respect to said sheath, said conical socket members together providing a threaded inner bore comprising said first tapped portion and said second tapped portion, wherein said first and second tapped portions have opposed threads.

A process of making a mechanical connection for connecting at least a first reinforcing rod comprising a first threaded end and protuberances on the external surface thereof, and a second reinforcing rod comprising a second threaded end and protuberances on the external surface thereof, the process comprising:

passing said first end of said first reinforcing rod completely through a sleeve comprising a first tapped portion for receiving said first reinforcing rod, and a second tapped portion for receiving said second reinforcing rod;
placing the ends of the first and second reinforcing rods in a substantially coaxial position with respect to one another, and in substantially end-to-end relationship;
connecting the first reinforcing rod and the second reinforcing rod by rotating said sleeve about said first end of said first reinforcing rod, and screwing said sleeve onto said second end of said second reinforcing rod, said first and second tapped portions on said sleeve corresponding respectively to said threaded ends of said first and second reinforcing rods, at least one of said first and second tapped portions being rotatable with respect to said sleeve, and at least one of said first and second tapped portions permits longitudinal deflection to adjust said threads of said first and second ends, said sleeve comprising a sheath having a conical bore therein, and a conical socket positioned in said conical bore, said conical socket comprising a plurality of conical socket members having external portions enabling longitudinal rotation and blockage with respect to said sheath, said conical socket members together providing a threaded inner bore comprising said first tapped portion and said second tapped portion, wherein said first and second tapped portions have opposed threads.

Dependencies are inferred from the claim text.

Facts

Application: 07/781,968Filed 24 Oct 1991 · continuation in part
Priority: FR 91 005954 Jan 1991
Granted: 3 May 1994
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

E04C 5/12
Members specially adapted to be used in prestressed constructions: anchoring devices
E04C 5/165
The reinforcements running in one single direction: coaxial connection by means of sleeves
Y10T 403/5733
Distinct end coupler: plural opposed sockets
Y10T 403/5746
Distinct end coupler: continuous thread