Patent ID: 7051410

Claim:
Safety snap hook for attaching a tie, comprising: an open ring snap hook body having a first end and a second end facing each other and separated by an opening, an exterior closure finger with two ends, articulated at its first end to the first end of the snap hook body to pivot relative to the snap hook body in a first direction toward the exterior of the snap hook, between a closed position in which its second end is in contact with an exterior surface of the snap hook body and an open position in which its second end is offset from the second end of the snap hook body, and with return spring means for spring-loading the exterior closure finger toward its closed position, and an interior closure finger with two ends, articulated at its first end to a point at or near the first end of the snap hook body to pivot relative to the snap hook body in a second direction toward the interior of the snap hook, between a closed position in which its second end comes into contact with an interior surface region of the snap hook body, and an open position in which its second end is offset from the second end of the snap hook body, with return spring means for spring-loading the interior closure finger toward the closed position, wherein: an insertion space is formed between the two closure fingers, the insertion space has a width sufficient to allow the insertion of the tie formed into a loop oriented perpendicularly to a mean direction of the closure fingers, the insertion space becomes progressively narrower in the direction of the second end of the closure fingers, and the interior surface region and the exterior surface region are set back from the second end of the snap hook body, said second end of the snap hook body forming an insertion nose that projects into the insertion space.