| 摘要 |
<p>The pump assembly has hydraulic pump (1) with two flow directions, including first and second hydraulic connection portions (3,4). The first inlet (5) and first outlet (6) are connected with first hydraulic connection portion and second inlet (7) and second outlet (8) are connected with second hydraulic connection portion. A non return valve (9-12) is arranged in each inlet and outlet. An independent claim is included for gear box.</p> |
