초록 ▼

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 t

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.

대표청구항 ▼

An improved vacuum cup construction comprising in combination: a. a first generally planar outer plate; b. a second, generally planar inner plate having an effective area which is less than that of the outer plate; c. a compressible generally planar sealing member between the outer and inner plates,

An improved vacuum cup construction comprising in combination: a. a first generally planar outer plate; b. a second, generally planar inner plate having an effective area which is less than that of the outer plate; c. a compressible generally planar sealing member between the outer and inner plates, the sealing member having an effective area greater than the inner plate area; d. a solid generally planar elastomeric member between the inner plate and the compressible sealing member, the solid elastomeric member having an effective area greater than the inner plate area; e. means for compressing the elastomeric member and the compressible sealing member between the outer plate and the inner plate and for deformation of the elastomeric member and the compressible sealing member therebetween, thereby forming a sealing edge about the periphery of the inner plate; and f. at least one vacuum passage extending from the inner side of the construction for connecting a vacuum source, whereby the construction may be positioned against a surface and a vacuum drawn to seal the sealing edge on the surface.