Abstract: This lever element comprises a hollow lever body of polymeric material ending at one end with a handgrip, and at another end with an upturned U-shaped end portion surounding and partially containing a rigid support of polymeric material, having a circular portion with a first front teeth formation. The upturned U-shaped end portion of the lever is rotatively rigid with a disc having a second front teeth formation facing the first teeth formation of the support for retaining the lever; elastic means being provided for pushing the disc into frontal contact engagement with the support, and mutually engaging the first and second front teeth formations. Furthermore release means, controlled by a pushbutton on the lever, are interposed between the support and the disc for controlled release of their frontal contact engagement.

Abstract: The device comprises a rotor having a central pin a plurality of concentrically arranged cylinders and a sprocket wheel, adapted for mesh engagement with a rack fixed to the sidewall of a drawer compartment. The device also comprises a stator adapted for being attached to a drawer and rotatably mounted on the pin and having a plurality of concentrically arranged cylinders interposed between those of the rotor. Relative movement of the rotor and the stator is controlled by an arrangement of co-operating grooves, a cam, and a ball, and a high density fluid interposed between the cylinders.