Abstract: A suspension device includes a leaf spring and a buffer. The leaf spring applies an elastic force for relatively moving an unsprung member in a predetermined direction with respect to a body (sprung member) of a vehicle. The buffer includes a first expansion/contraction member, a second expansion/contraction member, an intermediate member, and a damping passage. The first and second expansion/contraction members form first and second gas chambers filled with gas therein and are expandable and contractible. An upper end and a lower end of the first and second expansion/contraction members are connected to the body. The intermediate member couples the first and second expansion/contraction members and is connected to the leaf spring. The damping passage allows the first and second gas chambers to communicate with each other, and applies resistance to flow of flowing gas. When one of the first and second expansion/contraction members expands, the other contracts.

Abstract: A suspension device includes a leaf spring and a buffer. The leaf spring applies an elastic force for relatively moving an unsprung member in a predetermined direction with respect to a body (sprung member) of a vehicle. The buffer includes a first expansion/contraction member, a second expansion/contraction member, an intermediate member, and a damping passage. The first and second expansion/contraction members form first and second gas chambers filled with gas therein and are expandable and contractible. An upper end and a lower end of the first and second expansion/contraction members are connected to the body. The intermediate member couples the first and second expansion/contraction members and is connected to the leaf spring. The damping passage allows the first and second gas chambers to communicate with each other, and applies resistance to flow of flowing gas. When one of the first and second expansion/contraction members expands, the other contracts.

Abstract: A shock-absorbing guardrail that is easy to install and remove that prevents a support post from collapsing by absorbing the shock caused by a car collision thus reducing repair time. The shock-absorbing device is attached to the guard fence between the structure or support post. A mid-filler attachment may have an ohm-shaped cross-section or vertically opened pipe-shaped cross-section. The guard fence and mid-filler attachment may be attached to the support post or structure with removable connectors for faster installation and removal. The shock-absorbing device is designed to absorb collision energy by irreversible deformation of the mid-filler attachment.

Abstract: A unique shock-absorbing bumper device for use in absorbing collision energy in all bumper assembly systems, and more specifically automobiles. A simple efficient structure is designed for ease of installation and removal after impact, and to provide high performance in absorbing colliding energy, which prevents a driver and passengers from severe injury caused by a car colliding with an object. This system may be used in car doors for absorbing side impacts.