| 摘要 |
A resilient suction cup includes a body having an outer lip and a centrally located stem. The stem includes a substantially bell shaped stop and a plurality of expandable bellows. When the suction cup is positioned on an object, a vacuum source withdraws air from a cavity formed by the body. As the air is withdrawn by the vacuum source, the plurality of bellows collapse, and the outer lip forms a tight seal against the object. As the plurality of bellows collapse, the lower surface of the stop contacts the plurality of bellows, which further pushes against an upper surface of body, preventing the suction cup from being over-compressed while the vacuum source withdraws air from the cavity.
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