| 摘要 |
A shock absorber comprising a cylinder element, a liner element disposed within the cylinder element, and a piston element within the liner element and moveable longitudinally with respect to the cylinder element under the influence of fluid pressure within the cylinder element, the liner element having longitudinally thereof at least one zone of weakness yieldable at a predetermined pressure of the fluid to permit fluid to flow past the piston element and thus vary the rate of movement of the piston element with respect to the cylinder element. |
