| 摘要 |
<p>A coupling for a high pressure fluid pump assembly is shown and described. The plunger (14) has a rounded convex engagement surface. A second engagement portion of the extension rod (28) has a substantially flat second engagement surface engaging the first engagement surface of the plunger (14). The interface between the first and second engagement surfaces aligns motion of the plunger along the first axis with motion of the extension rod along the second axis, reducing their tendency to bend and to move laterally relative to their respective longitudinal axis.</p> |
