Patent ID: 7140583

Claim:
Mechanical chock with cams for climbing and mountaineering, comprising: at least one pair of anchoring cams, including a first cam and a second cam, mounted in rotation and in opposition on a common support axle member, each cam comprising a bearing surface of predetermined profile to contact a wall of a crack to act as an anchor; an attachment means securedly affixed to a central body of the support axle member, the central body having a first half-spindle for receiving the first cam and a second half-spindle for receiving the second cam; and means for operating the cams between a separated blocking position and a retracted releasing position, the operating means comprising a trigger-pull connected to the cams by a pair of connecting rods, said trigger-pull being formed by a tubular sliding block the top end of which is coupled to the rods and the bottom end of which is shaped as a gaping means, wherein the bearing surface of the first cam presents a convex face, and the bearing surface of the second cam has a concave face, so as to obtain three bearing points or zones in the separated blocking position, wherein the first half-spindle and the second half-spindle are coaxial.