| 摘要 |
A diaphragm pump including at least one diaphragm having an inner diaphra gm surface, an outer diaphragm surface, and a projecting rim, the rim projectin g from the inner diaphragm surface and having an inner circumferential surface and an outer circumferential surface, a hub positioned to lie within the inner circumferential surface of the projecting rim, a ring positioned around the outer circumferential surfa ce of the projecting rim, where the hub and ring secure the projecting rim there between, and a reciprocating rod coupled to at least one of the hub and the ring.
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