A left operating tool stand (39) disposed on the left side of an operator's seat (15) in a wheel loader (1) includes a support member (32), an operating tool stand (39) rotatably disposed to the support member (32) between an operating position and a tilt-up position, and an operating tool (53) disposed at a front end side of the operating tool stand (39) to operate the wheel loader (1). The operating tool stand (39) includes a rotating member (40) that is rotatably mounted about a support pin (33) as a rotational pivot, the supporting pin (33) being disposed to the support member (32), and a cam roller (50) that is rotatably disposed to the rotating member (40) and rotates together with the rotating member (40). A dimension (B) from a rotating center (O) of the rotating member (40) to an operating position contact part (60A1) with which the cam roller (50) comes in contact is formed to be smaller than a dimension (C) from the rotating center (O) of the rotating member (40) to a tilt-up position contact part (60B1) with which the cam roller (50) comes in contact.

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). The unidirectional coupling comprises at least one radial block (60) arranged between a radially outer surface (52) of the rotor (50) and a radially inner surface (34) of the intermediate element (31), and at least one actuating lobe (55) formed on the rotor (50) and projecting radially from the radially outer surface (52) thereof, the radial bock (60) comprising a wedge part (61) designed to be engaged by the actuating lobe (55) of the rotor (50) during rotation in the first direction of rotation (A) so as to push the radial block (60) in the centrifugal direction and lock it between the rotor (50) and the intermediate element (31).

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). The unidirectional coupling comprises at least one radial block (60) arranged between a radially outer surface (52) of the rotor (50) and a radially inner surface (34) of the intermediate element (31), and at least one actuating lobe (55) formed on the rotor (50) and projecting radially from the radially outer surface (52) thereof, the radial bock (60) comprising a wedge part (61) designed to be engaged by the actuating lobe (55) of the rotor (50) during rotation in the first direction of rotation (A) so as to push the radial block (60) in the centrifugal direction and lock it between the rotor (50) and the intermediate element (31).

There is provided a printer apparatus including a cushioning member coping with a weight increase of an upper cover. The printer apparatus includes a lower housing, the upper cover, and the cushioning member. The lower housing has an opening on one surface. The upper cover is rotatably connected to the lower housing and covers the opening. The cushioning member includes a cylinder that is fixed to the lower housing and has a cylindrical shape with different inner diameters in a longitudinal direction, a piston that can reciprocate along the longitudinal direction in the cylinder, and a piston rod that moves the piston along an inner wall of the cylinder and is fixed to the upper cover.

There is provided a printer apparatus including a cushioning member coping with a weight increase of an upper cover. The printer apparatus includes a lower housing, the upper cover, and the cushioning member. The lower housing has an opening on one surface. The upper cover is rotatably connected to the lower housing and covers the opening. The cushioning member includes a cylinder that is fixed to the lower housing and has a cylindrical shape with different inner diameters in a longitudinal direction, a piston that can reciprocate along the longitudinal direction in the cylinder, and a piston rod that moves the piston along an inner wall of the cylinder and is fixed to the upper cover.

A bicycle rear derailleur has a base member mountable to a bicycle frame, a movable member movably coupled to the base member, a chain guide assembly rotatably connected to the movable member, a biasing element configured to bias the chain guide assembly in a first rotational direction relative to the movable member, and a damper device disposed between the chain guide assembly and the movable member. The damper device is operable to apply a damping force to the chain guide assembly when the chain guide assembly rotates in a second rotational direction relative to the movable member. The damper device includes a friction member having a first end and an outer annular surface. The first end is non-rotatably attached to the chain guide assembly. The outer annular surface of the friction member is in frictional engagement with an inner annular surface of the movable member.

A bicycle rear derailleur has a base member mountable to a bicycle frame, a movable member movably coupled to the base member, a chain guide assembly rotatably connected to the movable member, a biasing element configured to bias the chain guide assembly in a first rotational direction relative to the movable member, and a damper device disposed between the chain guide assembly and the movable member. The damper device is operable to apply a damping force to the chain guide assembly when the chain guide assembly rotates in a second rotational direction relative to the movable member. The damper device includes a friction member having a first end and an outer annular surface. The first end is non-rotatably attached to the chain guide assembly. The outer annular surface of the friction member is in frictional engagement with an inner annular surface of the movable member.

A tripod head, in particular to hold a film or television camera, includes a first body and a second body, wherein the first body can be pivoted about at least one pivot axis relative to the second body, and a damping device to damp the pivoting movement of the first body relative to the second body, with a first damping element fixed to the first body and a second damping element, wherein the damping elements each have a plurality of concentrically arranged annular ribs which engage in cavities formed between the ribs of the respective other damping element and a damping medium is provided between the ribs of the damping element, wherein the second damping element is formed of at least two separate parts which are fixable independently of each other to the second body.

The invention provides an adjustable stiffness assembly for use in conjunction with a fixed stiffness element to elastically connect a structure to a mass. The assembly includes a structure mount, a mass mount, and a rotatable stiffness element. The rotatable stiffness element rotatably engages with the structure mount and the mass mount, and has a minimum stiffness value with respect to forces in a direction a maximum stiffness value with respect to forces in another direction The fixed stiffness element and the adjustable stiffness assembly together provide a complete stiffness assembly having a total stiffness value with respect to force in the global direction for elastically connecting the mass and the structure. The first rotatable stiffness element is rotatable relative to the structure mount and the first mass mount to vary the total stiffness value of the complete stiffness assembly with respect to force in the global direction.

A damper ring is mounted in frictional engagement with a radially inwardly facing surface of a circumferential groove defined in a rotary part of a gas turbine engine. Energy dissipation is provided via sliding friction of the ring in the groove. Pressure relief dimples are provided around the outer diameter of the ring for locally reducing contact pressure at the outer diameter below a value at which the damper ring locks in the groove by friction forces when subject to centrifugal loads.