| 摘要 |
<p>PCT No. PCT/NL93/00077 Sec. 371 Date Aug. 9, 1994 Sec. 102(e) Date Aug. 9, 1994 PCT Filed Mar. 29, 1993 PCT Pub. No. WO93/20354 PCT Pub. Date Oct. 14, 1993A hydraulic device comprising at least two cylinder-piston assemblies. Each of the assemblies are of the double-action type with a front and rear chamber on either side of a piston. The chambers are connected in series in a hydraulic control circuit such that the front chamber of a first assembly has a direct connection to a rear chamber of a second assembly. At least one of the cylinder-piston assemblies is provided with a valve assembly which opens a bypass thereby bypassing the piston of the assembly when the piston is situated close to the direct connection at the end of its stroke and the effective piston surfaces are the same in the chambers mutually connected by the direct connection.</p> |
