Abstract: A safety buckle includes a male buckle member and a female buckle member detachably fastened together, the female buckle member having a receiving chamber for receiving the male buckle member, wherein the female buckle member has a buffer element disposed in the front part thereof and defining a plurality of buffering spaces for buffering stretching force when the male buckle member and the female buckle member are pulled in reversed directions after locking.

Abstract: A lift-control buckle, which includes a female buckle member and a male buckle member respectively fastened to two distal ends of a belt, and a locking plate pivoted to two upright blocks inside the female buckle for locking the male buckle member after insertion of the male buckle member into a receiving space defined within the male buckle member between the upright blocks, wherein the locking plate has two springy side arms respectively supported on a respective step inside the female buckle member and stopped against the upright blocks for automatically returning the locking plate to the locking position after each unlocking operation.

Abstract: A clamp for joining the ends of a cord, including a cup-like hollow shell into which the ends of the cord are inserted, and a retaining member plugged into the shell to hold down the ends of the cord, the retaining member having a clamping unit at one end plugged into the shell, and a head at an opposite end stopped outside the shell, the clamping unit having a tapered hollow block fit tightly in the shell, a rectangular frame suspended inside the shell, two elongated connecting walls connected between the tapered hollow block and the rectangular frame at top and bottom sides, a receiving hole defined within the rectangular frame which receives the ends of the cord, and two springy clamping arms respectively raised from left and right side walls of the rectangular frame and terminating in a respective serrated end block, the serrated end blocks of the springy clamping arms being forced inwards and clamped on the ends of the cord at two opposite sides to hold down the ends of the cord in the retaining member w