Who is the inventor of automobile shock absorber?

Long before the advent of the automobile era, the devices that make vehicles run smoothly have been used in freight cars. In 1580, the bus has used the damping spring suspension. In 1805, Eliot obtained the patent of oval and semi-oval spring leaf. Until the 1950s, the devices used by automobiles to balance driving and reduce vibration were such spring steel plates and vertical compression springs. 1956, British leyland and French Citroen cars began to use hydraulic and hydro-pneumatic suspension systems. The suspension of the front and rear wheels is connected by pipes, and liquid and gas are mixed in the pipes to maintain the pressure. When one wheel touches something or potholes and rises or falls, the pressure in the pipeline will rise or fall, so that other wheels will fall or rise to compensate for maintaining the balance of the car. The balance and driving stability of the car have been improved as never before. Since then, the system has become the standard device for small passenger cars in various countries.