The invention relates to a method and an apparatus for receiving cylindrical bodies. In the method according to the invention, the receiving utilizes tight, self-restoring pressure elements, in which by adjusting the inflow and/or outflow of compressed air, the motion speed of the cylindrical body is decelerated. The apparatus according to the invention includes a pressure element within the elastic and tight material of which is installed self-restoring porous material. Furthermore, the invention relates to the use of the method and the apparatus for receiving a cylindrical body.

A shock absorber includes at least one of an expansion-side sensitive unit and a contraction-side sensitive unit. The expansion-side sensitive unit has an expansion-side actuating chamber that communicates with an expansion-side chamber and a contraction-side chamber, an expansion-side free piston that partitions the expansion-side actuating chamber into a first expansion-side pressure chamber and a second expansion-side pressure chamber, and an expansion-side spring element configured to bias the expansion-side free piston to compress the first expansion-side pressure chamber. The contraction-side sensitive unit has a contraction-side actuating chamber that communicates with a contraction-side chamber and a reservoir, a contraction-side free piston that partitions the contraction-side actuating chamber into a first contraction-side pressure chamber and a second contraction-side pressure chamber, and a contraction-side spring element configured to bias the contraction-side free piston to compress the first contraction-side pressure chamber.

A shock absorber includes at least one of an expansion-side sensitive unit and a contraction-side sensitive unit. The expansion-side sensitive unit has an expansion-side actuating chamber that communicates with an expansion-side chamber and a contraction-side chamber, an expansion-side free piston that partitions the expansion-side actuating chamber into a first expansion-side pressure chamber and a second expansion-side pressure chamber, and an expansion-side spring element configured to bias the expansion-side free piston to compress the first expansion-side pressure chamber. The contraction-side sensitive unit has a contraction-side actuating chamber that communicates with a contraction-side chamber and a reservoir, a contraction-side free piston that partitions the contraction-side actuating chamber into a first contraction-side pressure chamber and a second contraction-side pressure chamber, and a contraction-side spring element configured to bias the contraction-side free piston to compress the first contraction-side pressure chamber.

A damper includes a pressure tube extending about a longitudinal axis and defining an inner volume. The damper includes a piston attached to a piston rod and slidably disposed within the pressure tube. The piston divides the inner volume of the pressure tube into a first working chamber and a second working chamber. The damper includes a fluid connector having a first wall and a second wall, each elongated along the longitudinal axis and sealed to the pressure tube. The fluid connector has a third wall elongated along the longitudinal axis and extending from the first wall to the second wall. The pressure tube defines an opening at the first working chamber, and the third wall of the fluid connector defines an opening spaced from the opening of the pressure tube. The first wall, the second wall, and the third wall define a passage extending from the opening of the pressure tube to the opening of the third wall.

A damper includes a pressure tube extending about a longitudinal axis and defining an inner volume. The damper includes a piston attached to a piston rod and slidably disposed within the pressure tube. The piston divides the inner volume of the pressure tube into a first working chamber and a second working chamber. The damper includes a fluid connector having a first wall and a second wall, each elongated along the longitudinal axis and sealed to the pressure tube. The fluid connector has a third wall elongated along the longitudinal axis and extending from the first wall to the second wall. The pressure tube defines an opening at the first working chamber, and the third wall of the fluid connector defines an opening spaced from the opening of the pressure tube. The first wall, the second wall, and the third wall define a passage extending from the opening of the pressure tube to the opening of the third wall.

Provided is a liquid pressure device having no dead band in generation of force and causing no contamination, the liquid pressure device including a bottom cap and a head cap welded to an outer tube, and a rod guide fastened to the head cap, and one end of a pipe is fit in the bottom cap and the other end of the pipe is fit in the rod guide, and the bottom cap and the rod guide sandwich a cylinder. Accordingly, the liquid pressure device of the present invention can add shaft force to the cylinder while supporting the pipe, an inside of which is isolated from a tank, by the bottom cap and the rod guide, and does not need to braze the pipe to the bottom cap. Therefore, the liquid pressure device of the present invention has no dead band in generation of force and causes no contamination.

Provided is a liquid pressure device having no dead band in generation of force and causing no contamination, the liquid pressure device including a bottom cap and a head cap welded to an outer tube, and a rod guide fastened to the head cap, and one end of a pipe is fit in the bottom cap and the other end of the pipe is fit in the rod guide, and the bottom cap and the rod guide sandwich a cylinder. Accordingly, the liquid pressure device of the present invention can add shaft force to the cylinder while supporting the pipe, an inside of which is isolated from a tank, by the bottom cap and the rod guide, and does not need to braze the pipe to the bottom cap. Therefore, the liquid pressure device of the present invention has no dead band in generation of force and causes no contamination.

A gas spring and gas damper assembly includes a gas spring and a gas damper. The gas spring includes a flexible spring member with opposing end members secured thereto and at least partially defining a spring chamber. The gas damper includes an inner sleeve that is at least partially received within one of the end members and at least partially forms a damping chamber. A damper piston assembly is received within the damping chamber and secured to the other of the end members. An elongated damping passage fluidically connects the damping chamber and the spring chamber. Suspension systems and methods are also included.

A gas spring and gas damper assembly includes a gas spring and a gas damper. The gas spring includes a flexible spring member with opposing end members secured thereto and at least partially defining a spring chamber. The gas damper includes an inner sleeve that is at least partially received within one of the end members and at least partially forms a damping chamber. A damper piston assembly is received within the damping chamber and secured to the other of the end members. An elongated damping passage fluidically connects the damping chamber and the spring chamber. Suspension systems and methods are also included.

A hydrostatic drive system is disclosed which allows for simpler and more robust control of hydraulic vibration. The system comprises first and second hydraulic drive units and a variable damping device. At least the first hydraulic drive unit is a variable displacement type and comprises a displacement control. The variable damping device comprises at least one variable element. The system comprises a first linkage apparatus between the displacement control and the variable element and is operable to control the variable element in accordance with the displacement of the displacement control.