| 摘要 |
<p>A dual chamber pump comprises a shaft (20) to each end of which is attached a driven member (30), a body member (45) being disposed over each driven member (30) to define therewith a pumping chamber (70), to which chambers (70) is alternately fed a supply of pressure. The driven members (30) each includes an expandable bellows (36) which reduces wear on the pump, while it is preferred that the body members (45) are secured to the pump by rotatable body rings (18) which enable ready disassembly of the pump by rotation of the body rings (18). <IMAGE></p> |
