Oliff & Berridge
Hydropneumatic, self-pumping, telescopic shock absorber, particularly for motor vehicles
 A hydropneumatic shock absorber includes an inlet valve and an outlet valve. The inlet valve opens when the piston moves in a contracting direction so that fluid is sucked into a pump chamber, and the outlet valve opens when the piston moves in an extending direction so that the fluid is discharged from the pump chamber into a high-pressure operating chamber. Thus, the pressure in the high-pressure operating chamber does not increase when the wheel bounces, and the oscillation encountered while the vehicle is traveling is properly absorbed so that good riding comfort is realized. 
Aisin Seiki Kabushiki Kaisha Toyota Jidosha Kabushiki Kaisha
B B F
B60K B60G F16F
inventional inventional inventional
Tamotsu Katsuyuki Kenji Hiroyuki Kimitoshi Hideyuki Osamu
Furukawa Sano Hayashi Terada Kato Kobayashi Yasuike