A delayed return mechanism, such as for a door latch, including a housing having a hole with an axis, a cavity in the housing at least partially filled with a fluid media, a hub disposed in the cavity including a spindle hole coaxial with the hole in the housing including teeth within the spindle hole to engage a spindle, the hub being rotatable about the axis and having a fin extending radially outward in the cavity, and a channel through which the fluid media passes during rotation of the hub to control flow of the fluid media about the cavity.

A rotary damper (1) has a first sealing ring (8a) and a first bushing (4a) which are located between a through-hole (23) of a circular cylindrical chamber (21) inside a case (2) and a lower end part (33a) of a rotor body (31) of a rotor (3), and a second sealing ring (8b) and a second bushing (4b) which are located between a through-hole (60) in a lid (6) and an upper end part (33b) of the rotor body (31). The first sealing ring (8a) has an outer peripheral surface (85) having a width in a direction of a center axis of the circular cylindrical chamber (21) and being pressed against an inner peripheral surface (220) of the through-hole (23), and an inner peripheral surface (84) having a width in the direction of the center axis of the circular cylindrical chamber (21) and being pressed against an outer peripheral surface (34) of the lower end part (33a), and the second sealing ring (8b) has an outer peripheral surface (85) having a width in the direction of the center axis of the circular cylindrical chamber (21) and being pressed against an inner peripheral surface (64) of the through-hole 961 (60), and an inner peripheral surface (84) having a width in the direction of the center axis of the circular cylindrical chamber (21) and being pressed against the outer peripheral surface (34) of the upper end part (33b).

A rotary damper (1) has a first sealing ring (8a) and a first bushing (4a) which are located between a through-hole (23) of a circular cylindrical chamber (21) inside a case (2) and a lower end part (33a) of a rotor body (31) of a rotor (3), and a second sealing ring (8b) and a second bushing (4b) which are located between a through-hole (60) in a lid (6) and an upper end part (33b) of the rotor body (31). The first sealing ring (8a) has an outer peripheral surface (85) having a width in a direction of a center axis of the circular cylindrical chamber (21) and being pressed against an inner peripheral surface (220) of the through-hole (23), and an inner peripheral surface (84) having a width in the direction of the center axis of the circular cylindrical chamber (21) and being pressed against an outer peripheral surface (34) of the lower end part (33a), and the second sealing ring (8b) has an outer peripheral surface (85) having a width in the direction of the center axis of the circular cylindrical chamber (21) and being pressed against an inner peripheral surface (64) of the through-hole 961 (60), and an inner peripheral surface (84) having a width in the direction of the center axis of the circular cylindrical chamber (21) and being pressed against the outer peripheral surface (34) of the upper end part (33b).

A torque absorber is described for absorbing a rotational torque that occurs when tubular elements are screwed together, the torque absorber comprising at least one cylinder and at least one piston movably arranged in the cylinder. The at least one cylinder is curved in the longitudinal direction of the cylinder and the at least one piston has a corresponding curved shape, such that the at least one piston can be moved into and out of the at least one cylinder. There is also described an apparatus comprising one or more torque absorbers for absorbing a rotational torque that occurs between two parts in the apparatus on the screwing together of tubular elements.

A torque absorber is described for absorbing a rotational torque that occurs when tubular elements are screwed together, the torque absorber comprising at least one cylinder and at least one piston movably arranged in the cylinder. The at least one cylinder is curved in the longitudinal direction of the cylinder and the at least one piston has a corresponding curved shape, such that the at least one piston can be moved into and out of the at least one cylinder. There is also described an apparatus comprising one or more torque absorbers for absorbing a rotational torque that occurs between two parts in the apparatus on the screwing together of tubular elements.

A hydraulic damping device includes a housing defining a fluid inlet and a fluid outlet, a damping plate disposed within the housing, the damping plate including a plurality of damping holes defined therethrough and positioned to allow fluid communication between the fluid inlet and the fluid outlet, and a blocking member disposed within the housing and configured to rotate relative to the damping plate to progressively block the damping holes.

A rotary damper comprising a fixed structure, a rotor configured to rotate about an axis (R-R), and two opposing bellows. The bellows each extend between the rotor and the fixed structure and are attached thereto. The bellows each define a chamber for holding hydraulic fluid and are configured to expand and contract as the rotor rotates. The damper further comprises a damping orifice extending through the rotor or the fixed structure. The bellows are sealingly engaged around the damping orifice and the damping orifice permits fluid communication between the chambers defined by the bellows.

A torque adjustment function-provided rotary damper capable of easily adjusting a torque without needing to use a tool, even in a case where a space cannot be secured on an end portion side of a casing. An adjustment lever is an operation member having an engagement portion and a knob portion. The engagement portion links with an adjuster by engaging with an adjustment end portion such that a cutout fits to a fitting portion. The knob portion is formed integrally with the engagement portion by protruding radially from an outer periphery side of the casing. The knob portion extends to a guide portion along an axial direction of the casing in its outer periphery. The guide portion has a semi-ring shape which is partially cut out. The guide portion is rotatably disposed along an outer periphery of a shaft side cap that closes an end portion of the casing.

A clothes treating apparatus includes: a cabinet; a tub positioned inside the cabinet; a drum configured to rotate inside the tub; and a damper coupled to the cabinet and the tub and configured to reduce vibrations of the tub according to a rotation of the drum. The damper includes: a piston; a cylinder forming an inside space in which the piston is movable, the cylinder including a yoke and a bobbin positioned at one side of the yoke; and a friction member positioned between an outer surface of the piston and an inner surface of the cylinder and including a magneto-rheological fluid of which viscosity changes according to a magnetic field. A thickness of the friction member positioned between the piston and the bobbin is smaller than a thickness of the friction member positioned between the piston and the yoke.

A clothes treating apparatus includes: a cabinet; a tub positioned inside the cabinet; a drum configured to rotate inside the tub; and a damper coupled to the cabinet and the tub and configured to reduce vibrations of the tub according to a rotation of the drum. The damper includes: a piston; a cylinder forming an inside space in which the piston is movable, the cylinder including a yoke and a bobbin positioned at one side of the yoke; and a friction member positioned between an outer surface of the piston and an inner surface of the cylinder and including a magneto-rheological fluid of which viscosity changes according to a magnetic field. A thickness of the friction member positioned between the piston and the bobbin is smaller than a thickness of the friction member positioned between the piston and the yoke.