Abstract: A shock absorber includes a cylinder portion, a piston rod portion arranged as a single member, a pair of protruding members protruding from an outer circumferential surface of the piston rod portion, and a piston valve assembly having the piston rod portion passing therethrough. The piston valve assembly includes a piston portion, a valve element, and a threaded portion arranged to extend or contract in an axial direction as a result of rotation of a female thread portion relative to a male thread portion. The piston valve assembly is arranged such that the piston portion and the valve element are retained to the piston rod portion so as not to move with respect to the axial direction of the piston rod portion by a stretching force generated between the pair of protruding members due to extension of the threaded portion.

Abstract: A shock absorber includes a first cylinder portion, a second cylinder portion, a first piston portion arranged in an internal space of the first cylinder portion, a second piston portion arranged in an internal space of the second cylinder portion, a first rod portion connected to the first piston portion, and a second rod portion provided between the first piston portion and the second piston portion. The second rod portion has a stiffness lower than the stiffness of the first rod portion. When the first piston portion moves toward the one end portion side of the first cylinder portion, the first rod portion moves into the first cylinder portion so that the volume of the internal space of the first cylinder portion decreases, while the second piston portion moves along with the first piston portion so that the volume of the first chamber of the second cylinder portion increases.

Abstract: A trim device includes a trim cylinder, a piston, a piston rod and a support member. The piston is slidable inside the trim cylinder, in the axial direction of the trim cylinder. The piston rod is connected with the piston and moves in the axial direction of the trim cylinder following the movement of the piston. The support member is slidable relative to the piston rod and arranged to support the piston rod so that the piston rod's axial center can become tilted with respect to the axial center of the cylinder.

Abstract: A trim device includes a trim cylinder, a piston, a piston rod and a support member. The piston is slidable inside the trim cylinder, in the axial direction of the trim cylinder. The piston rod is connected with the piston and moves in the axial direction of the trim cylinder following the movement of the piston. The support member is slidable relative to the piston rod and arranged to support the piston rod so that the piston rod's axial center can become tilted with respect to the axial center of the cylinder.