Patent ID: 8376295

Claim:
A dual-layer suction cup, comprising: an outer body, the outer body having a first chamber therein and a second chamber under the first chamber, the second chamber being larger than the first chamber; an adhesive soft inner body adhered to the second chamber of the outer body, the adhesive soft inner body having an opening at a central portion thereof; and an elastic unit disposed in the first chamber, the elastic unit comprising a base connected to the outer body, the base having a central outlet at a lower end thereof; a slide seat disposed in the base, the slide seat being movable inward or outward within the base, and an elastic member received in the slide seat, wherein the outer body has a dish-like shape and a protruding central portion, the outer body includes a connection mouth on a top end thereof and a partition under the connection mouth, and the first chamber is disposed under the partition inside the outer body.