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.

Abstract: A device for braking the movement of a movable member with respect to a support structure includes a casing fixable to the movable member or to the structure and defining a chamber containing a viscous braking fluid, and a rotor, operationally associable with the movable member or with the structure, and which is rotatably connected to the casing and is mounted thereon so as to close the chamber. The rotor includes a piston-like member or portion, mounted so as to slide within the chamber in such a way as to separate the chamber into separate regions in mutual fluid communication. The piston-like member or portion is movable integrally with the rotor, such that rotation of the rotor brings about a rotatory displacement of the piston-lie member or portion, braked by the resistance to the passage of the fluid from one region to the other of the chamber caused by the displacement of the piston-like member or portion.

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) 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.

Abstract: A rotary damper comprises a first component, a second component mounted rotatably on the first, a braking fluid interposed, between the first and the second component, and a third component mounted rotatably on the second component. The second and the third component form a lateral support surface and a lateral shaft surface which is rotatable within the lateral support surface, rolling elements being interposed between these surfaces. The arrangement is such that, in a first direction of rotation (A), the third component can rotate freely with respect to the second, and, in a second direction of rotation (B), the third component is rigidly coupled to the second. Recesses are formed on the lateral shaft surface, these recesses accommodating corresponding rolling elements and being shaped so as to create, in the second direction of rotation, a centrifugal displacement of the rolling elements such that the elements are locked between the recesses and the lateral support surface.

Abstract: A rotary damper comprises a casing fixable to a structure and which comprises a wall which surrounds a chamber filled with a viscous fluid and has an inner surface facing the chamber. A cover is mounted and welded on a shoulder surface of the wall of the casing in such a way as to close the chamber in a sealed manner. A rotor which is mounted rotatably on the casing and comprises a disc portion, adapted to rotate within the chamber, and has a shaft portion extending axially from the disc portion and emerging through the cover so as to be operationally associable with a movable member. The cover has peripherally a collar-like protuberance, extending along the entire perimeter of the cover and coupled to the inner surface of the wall of the casing in such a way as to oppose the infiltration of the viscous fluid between the collar-like protuberance and the inner surface of the wall.

Abstract: A rotary damper (10) is disclosed, which comprises a cylindrical housing (12), a rotor (16), and a closure assembly (21; 21?; 21?). The cylindrical housing, rotor and closure assembly cooperate so as to contain a braking chamber (30) having an arcuately extending transverse section and containing a viscous braking fluid. The rotor (16; 16?) comprises a piston element or portion (31) extending radially from the rotor (16; 16?), and arranged within the braking chamber (30) so as to separate it into two separate regions (30a, 30b) in mutual fluid communication. The braking chamber (30) is formed in a shoulder portion (13b) of the lateral wall (13) of the cylindrical housing (12), and the fluid communication between the two separate regions (30a, 30b) of the chamber (30) is obtained through a channel (35) formed on a shoulder surface (14) of the shoulder portion (13b) of the cylindrical housing (12). The channel is interposed between such shoulder portion and the closure assembly (21; 21?; 21?).

Abstract: A rotary damping device (10) includes a housing (12) comprising a radially inner wall (17), a radially outer wall (18) and an end wall (19), which delimit a chamber (16) containing a viscous braking fluid; and a rotor (14), rotationally connected to the housing and mounted thereon on the opposite side to the end wall (19) so as to close the chamber (16). The rotor comprises a braking portion (27) having the form of an annular collar which extends axially inside the chamber (16) and is arranged between the radially inner wall (17) and the radially outer wall (18) of the housing (12). The radially inner wall (17) of the housing (12) has, formed therein, at least one recess (31) facing the braking portion (27) of the rotor (14) and able to interrupt the circular profile of the radially inner wall (17) inside the chamber (16).

Abstract: A device (15) for slowing the movement of a door (2) urged by unidirectional thrust means (4), including a casing (17) fixable to a structure (S) and defining a chamber (18) filled with a viscous fluid, and a rotor (31). The rotor (31) includes a disc portion (32) and a shaft portion (33) protruding through the lid (21) of the casing (17) in such a way as it can be associated with the door (2). The base surface (23a) of the chamber (18) has a recess (51) operable to house a pivotable arm (52). The arm (52) has a pin portion (54) protruding into the chamber (18). The lower surface (62) of the disc portion (32) of the rotor (31) has a groove (70) for engaging the pin portion (54) of the arm (52). At one end (73), the groove (70) has a cam (76) dividing it into a return path (75) and a forward path (74) for the pin portion (54) so as to define a locking position for the rotor (31) in cooperation with the thrust means (4).

Abstract: A device (10) for braking the movement of a movable member with respect to a support structure is described. The device comprises a casing (12) fixable to the movable member (M) or to the structure (W) and defining a chamber (16; 16?; 16??) containing a viscous braking fluid, and a rotor (14), operationally associable with the movable member (M) or with the structure (W), and which is rotatably connected to the casing and is mounted thereon so as to close the chamber (16; 16?; 16??). The rotor comprises a piston-like member or portion (31), mounted so as to slide within the chamber in such a way as to separate the chamber into separate regions (16a, 16b) in mutual fluid communication.

Abstract: A rotary damper (15) comprises a casing (17) fixable to a structure (S) and which comprises a wall (17a) which surrounds a chamber (18) filled with a viscous fluid and has an inner surface (18a) facing the chamber (18); a cover (21) mounted and welded on a shoulder surface (18d) of the wall (17a) of the casing (17) in such a way as to close the chamber (18) in a sealed manner; and a rotor (31) which is mounted rotatably on the casing (17) and comprises a disc portion (32), adapted to rotate within the chamber (18), and a shaft portion (33) extending axially from the disc portion (32) and emerging through the cover (21) so as to be operationally associable with a movable member (2).

Abstract: A rotary damper (15) comprises a first component (17), a second component (31) mounted rotatably on the first (17), a braking fluid interposed between the first (17) and the second component (31), and a third component (50) mounted rotatably on the second component (31). The second (31) and the third component (50) form a lateral support surface (35a) and a lateral shaft surface (55a) which is rotatable within the lateral support surface (35a), rolling elements (80) being interposed between these surfaces. The arrangement is such that, in a first direction of rotation (A), the third component (50) can rotate freely with respect to the second (31), and, in a second direction of rotation (B), the third component (50) is rigidly coupled to the second (31).

Abstract: A device (15) for slowing the movement of a drawer (2) urged by unidirectional thrust means (4), including a casing (17) fixable to a structure (S) and defining a chamber (18) filled with a viscous fluid, and a rotor (31). The rotor (31) includes a disc portion (32) and a shaft portion (33) protruding through the lid (21) of the casing (17) in such a way as it can be associated with the door (2). The base surface (23a) of the chamber (18) has a recess (51) operable to house a pivotable arm (52). The arm (52) has a pin portion (54) protruding into the chamber (18). The lower surface (62) of the disc portion (32) of the rotor (31) has a groove (70) for engaging the pin portion (54) of the arm (52). At one end (73), the groove (70) has a cam (76) dividing it into a return path (75) and a forward path (74) for the pin portion (54) so as to define a locking position for the rotor (31) in cooperation with the thrust means (4).

Abstract: A device for slowing the movement of a drawer or similar movable member, having releasable locking means A device (15) for slowing the movement of a drawer (2) urged by unidirectional thrust means (4), including a casing (17) fixable to a structure (S) and defining a chamber (18) filled with a viscous fluid, and a rotor (31). The rotor (31) includes a disc portion (32) and a shaft portion (33) protruding through the lid (21) of the casing (17) in such a way as it can be associated with the door (2). The base surface (23a) of the chamber (18) has a recess (51) operable to house a pivotable arm (52). The arm (52) has a pin portion (54) protruding into the chamber (18). The lower surface (62) of the disc portion (32) of the rotor (31) has a groove (70) for engaging the pin portion (54) of the arm (52).

Abstract: A device (15) for slowing the movement of a door (2) urged by unidirectional thrust means (4), including a casing (17) fixable to a structure (S) and defining a chamber (18) filled with a viscous fluid, and a rotor (31). The rotor (31) includes a disc portion (32) and a shaft portion (33) protruding through the lid (21) of the casing (17) in such a way as it can be associated with the door (2). The base surface (23a) of the chamber (18) has a recess (51) operable to house a pivotable arm (52). The arm (52) has a pin portion (54) protruding into the chamber (18). The lower surface (62) of the disc portion (32) of the rotor (31) has a groove (70) for engaging the pin portion (54) of the arm (52). At one end (73), the groove (70) has a cam (76) dividing it into a return path (75) and a forward path (74) for the pin portion (54) so as to define a locking position foe the rotor (31) in cooperation with the thrust means (4).