| 摘要 |
A vacuum cup construction designed to support large items includes a planar outer plate, and a planar, generally coincidentally shaped inner plate which is smaller than the outer plate. A generally flat coincidentally shaped compressible unmolded, non-preferred sealing member, which is larger than the inner plate, is retained between the outer and inner plates by a threaded stud and an associated nut. The tightening of nut on the threaded stud compresses the sealing member between the outer and inner plates. Compression of the sealing member causes the periphery to deform and form a sealing edge. A vacuum passage passes through the outer plate, the sealing member, and the inner plate to permit a vacuum to be drawn when the assembly is placed against the surface of an item or object.
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