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A carabiner equipped with a swivelling gate formed by a rigid metal wire of smaller diameter than that of the body. The wire is provided with a protuberance at one of the ends to form a male latching element and an articulation loop at the opposite end for passage of the swivel-pin. A flexible retur

A carabiner equipped with a swivelling gate formed by a rigid metal wire of smaller diameter than that of the body. The wire is provided with a protuberance at one of the ends to form a male latching element and an articulation loop at the opposite end for passage of the swivel-pin. A flexible return device for returning the gate to the closed position comprises a compression spring operating in conjunction with an intermediate transfer stirrup inside a housing of the body.

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1. A carabiner comprising: a metal body in the form of an open ring having a first end equipped with a securing part,a gate moving around a swivel-pin between a closed position and an open position, said swivel-pin being situated in proximity to a bottom second end of the body,a flexible return devi

1. A carabiner comprising: a metal body in the form of an open ring having a first end equipped with a securing part,a gate moving around a swivel-pin between a closed position and an open position, said swivel-pin being situated in proximity to a bottom second end of the body,a flexible return device biasing the gate to the closed position, wherein the gate is formed by a rigid metal wire having a smaller diameter than that of the body, said wire comprising a protuberance at one of the ends thereof to constitute a male latching element, and an articulation loop at an opposite one of the ends thereof for passage of the swivel-pin. 2. The carabiner according to claim 1, wherein the articulation loop comprises a closed contour achieved by winding the end of the metal wire. 3. The carabiner according to claim 2, wherein the articulation loop of the gate comprises two guiding flats on the opposite surfaces and a bulge in a non-flattened zone acting as a blocking part operating in conjunction with a stop zone of the body. 4. The carabiner according to claim 2, wherein the body is made of forged aluminium alloy and, at the top end thereof, comprises a female securing element provided with a recess having a profile of conjugate shape to the male latching element, and wherein the wire of the moving gate is made from steel presenting a straight or curved shape. 5. The carabiner according to claim 1, wherein the flexible return device of the gate comprises a compression spring operating in conjunction with an intermediate transfer stirrup in a housing of the second end of the body. 6. The carabiner according to claim 5, wherein the transfer stirrup comprises a centering pin designed to be inserted in the compression spring, and two transmission branches in contact with the loop to transmit a loading movement to the spring when the gate is opened, and to transmit an opposite closing movement of the gate by rotation of the loop on the fixed swivel-pin when expansion of the spring takes place. 7. The carabiner according to claim 6, wherein the transmission branches of the transfer stirrup operate in conjunction with a pair of spigots to transmit said loading and closing movements. 8. The carabiner according to claim 7, wherein the pair of spigots are securedly affixed to the gate and are arranged in a continuation of a bulge of the loop. 9. The carabiner according to claim 1, wherein the bottom second end of the body is provided with two slightly convex opposite wings separated from one another by a central gap accommodating the articulation loop of the gate, the two wings being provided with two holes aligned in the transverse direction with a hole of the loop for passage of the swivel-pin. 10. The carabiner according to claim 7, wherein the pair of spigots are supported by a support part having a first end pressing against a bulge of the loop and comprising a tubular base-part at the opposite second end, said base-part being housed coaxially in the circular hole of the loop to act as a bearing for the swivel-pin.