Patent ID: 8240011

Claim:
A device for fastening a watchstrap to a watchcase comprising a middle, two pairs of horns, arranged two by two on two sides of the middle, and a watchstrap comprising two strands, each strand comprising a first link intended to adjoin the watchcase, wherein each horn is provided on its lateral face with a skid with one beveled end and a recess, and wherein each first link comprises two grooves arranged so that the skids glide in the grooves, said skids and said grooves defining guiding means of the watchstrap in reference to the watchcase, and wherein each of said grooves comprises a mobile pin connected to a control organ accessible from the outside of the first link, said pin being sized in such a manner that said pin can engage inside one of the recesses and is pushed by a spring which tends to engage the pin in the corresponding recess, and wherein said pin is able to move between a first state wherein the spring is compressed and the pin is retracted at least partially inside the first link so that said pin does not cooperate with the recess, and a second state wherein the pin is lodged within the recess by the action of the spring, operating a locking of the watchstrap on the middle, and wherein said pins are brought in said first state by the contact between each pin on the beveled end of one of the skids when the skids are engaged in the grooves, and the pins move from the second state to the first state during the disengagement of the skids from the grooves, only by the actuation of the control organ.