Spring loaded valve-plates for shock absorbers - has inner piston apertures to permit high flow of fluid with small axial movement

摘要

The shock absorbers support the bumpers of vehicles for absorbing the energy of low speed collisions. The cylinder is attached to the vehicle frame and the piston rod to the bumper. In collision the pressure in the space increases and fluid must flow from it through the holes in the piston, into a circular channel, raising the valve plate and flowing past its outer dia. as well as past its inner dia. through the channels and grooves. By this construction, as compared with the usual construction which does not have the inner passages, greater flow with lower valve lift and hence with less pressure build-up from the spring is obtained.