发明授权
US09151304B2 Multi-stage hydraulic cylinder assembly 有权
多级液压缸总成

Multi-stage hydraulic cylinder assembly
摘要:
A cushion arrangement for smoothing stage changes in an hydraulic cylinder and including at least one compression chamber of variable volume with a movable and/or deformable chamber wall element displaceable by at least one of the pistons when approaching the transition zone between first and second stages of displacement. The compression chamber is operatively connected to a gas volume to be compressed upon displacement of the chamber wall element.
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