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For the common plunger, the cup is pushed down against the drain opening, either pressing hard into the drain to force air in or pushing down until the rubber cup is flattened. The cup is then pulled out, creating a vacuum to pull blockage material upward and dislodge waste or other material.
The working face of the suction cup is made of elastic, flexible material and has a curved surface. [3] When the center of the suction cup is pressed against a flat, non-porous surface, the volume of the space between the suction cup and the flat surface is reduced, which causes the air or water between the cup and the surface to be expelled past the rim of the circular cup.
Some paper cup holders carry advertisements. The coffee sleeve was invented in 1991 by Jay Sorensen [1] and patented in 1995 [2] (under the trademarked name Java Jacket), and are now commonly utilized by coffee houses and other vendors that sell hot beverages dispensed in disposable paper cups. There are a number of patents that cover various ...
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related to: toothbrush cover with suction cup handle for shower drain plugtemu.com has been visited by 1M+ users in the past month
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