| 摘要 |
<p>The equipment delivers oil to lubricate a piston travelling in a straight line in a cylinder, and has a cylindrical chamber moving with the piston and whose axis is parallel to it. A weight, forming a seal, works to and fro in the chamber, so as to form two variable-volume chambers, each connected by passages to the outside, one of them being in the piston and leading to the piston face working against the cylinder. The second passage (38b) is also in the piston (34), leading to the face of the latter working against the cylinder (35). In the cylinder is a first annular groove (41) connected to an inlet passage (43), and there are also two second annular grooves (42a, 42b). The grooves work with the first and second passages (38a, 38b).</p> |
