| 摘要 |
834,690. Buffers. ATELIERS DE CONSTRUCTION DU NORD DE LA FRANCE. June 11, 1957 [June 11, 1956; Feb. 1, 1957; March 13, 1957], No. 18394/57. Class 103(5) A buffer Is provided with an hydraulic chamber 4 which may also contain air as well as oil, and a piston 5 provided with orifices 12a through which the oil is throttled when the buffer is subjected to impact, the oil displacing the floating piston 10 to compress the gas contained in the chamber 9. The coil spring 14 is arranged in parallel with the hydro-pneumatic device and rubber springs 16, 17 are arranged in tandem.
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