Abstract: Shock absorber comprising a tubular base, a piston, a stem connected to the piston, and a plurality of fluid paths for connecting a working chamber and an accumulation chamber on opposite sides of the piston, one of which provides for a ring-shaped obstructing member arranged about the piston and able to slide along an axial length of the piston. The obstructing member comprises a bush of plastic material, which has a flexible lip portion extending from a rear end of the bush and having a radially outer surface tapered towards the rear end of the bush, the lip portion being adapted to seal against a radially inner surface of the base when the obstructing member is in a closed configuration. A support ring member is adapted to radially engage the lip portion of the bush from within, and to push it against the radially inner surface of the base.

Abstract: Rotary damper (15), comprising a casing (17), an intermediate element (31) mounted movably on the casing (17), a braking fluid provided between the casing (17) and the intermediate element (31) so as to brake the movement of the intermediate element (31) relative to the casing (17), a rotor (50) mounted on the intermediate element (31) rotatably about an axis of rotation (x), and a unidirectional coupling arranged between the intermediate element (31) and the rotor (50).

Abstract: Shock absorber comprising a tubular base, a piston, a stem connected to the piston, and a plurality of fluid paths for connecting a working chamber and an accumulation chamber on opposite sides of the piston, one of which provides for a ring-shaped obstructing member arranged about the piston and able to slide along an axial length of the piston. The obstructing member comprises a bush of plastic material, which has a flexible lip portion extending from a rear end of the bush and having a radially outer surface tapered towards the rear end of the bush, the lip portion being adapted to seal against a radially inner surface of the base when the obstructing member is in a closed configuration. A support ring member is adapted to radially engage the lip portion of the bush from within, and to push it against the radially inner surface of the base.

Abstract: A shock absorber has a tubular housing, a bearing sealingly mounted to the front end of the tubular housing, a piston mounted within the tubular housing for a reciprocal sliding movement, which defines within the tubular housing a working chamber and an accumulator chamber. A stem is connected to the piston and projects from the tubular housing through the bearing. At least one fluid pathway connects the working chamber to the accumulator chamber. A compensation diaphragm facing on the accumulator chamber includes a sleeve made of a deformable material mounted between the ends of the bearing. The compensation diaphragm has a rear end folded backwards such as to envelope the cup-shaped rear end of the bearing, and is provided with a shaped edge to provide a sealing between the bearing and the piston stem.

Abstract: A shock absorber comprises a tubular housing (10), a cover (14), and a piston (34) defining within the tubular housing (10) a working chamber (W) 34g 34h and an accumulator chamber (A). A first fluid pathway (34p, 42, 34g) and a second fluid pathway (46, T, 34f) arranged in parallel connect the working chamber (W) to the accumulator chamber (A). The first fluid pathway establishes a permanent fluid communication between the working chamber (W) and the accumulator chamber (A). A valve assembly comprises an obturating element (44) arranged around the piston (34) and slidable along an axial length of the piston (34). The second fluid pathway comprises a first pathway section (34f) formed through the piston and a second pathway section (46, T) formed between the piston (34) and the obturating element (44). The second fluid pathway is able to selectively assume an open configuration and a closed configuration, and it has a lower fluid resistance than the fluid resistance of the first fluid pathway.