Vacuum cup construction
OwnerEdmund R. Littellinventor
Life of this patent
Estimating the term…
Abstract
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-preformed sealing member, which is larger than the inner plate, is retained between the outer and inner plates by a threaded stud and a threaded nut connecting the outer and inner plates, the tightening of which compresses the sealing member. 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.
Claims27
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 generally planar, compressible, elastomeric, non-preformed sealing member between the outer and inner plates, the sealing member having an effective area greater than the inner plate area;
- d. means for connecting the outer plate to the inner plate for compression of the sealing member there-between and thereby forming a sealing edge about the periphery of the inner plate;
- and
- e. at least one vacuum passage extending from the inner side of the construction whereby a vacuum source may be connected thereto to effect attachment of the construction to an object.
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 less than that of the first plate;
- c. a compressible, elastomeric, non-preformed sealing member positioned between the outer and inner plates, wherein the effective area of the sealing member is greater than effective area of the inner plate;
- d. opposing sides of said sealing member each capable of forming a sealing edge sufficient to sustain a vacuum;
- e. means for connecting the outer plate to the inner plate adapted for compression of the sealing member therebetween and 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 whereby a vacuum source may be connected thereto to effect attachment of the construction to an object.
A vacuum cup construction comprising in combination:
- a. a first generally planar outer plate;
- b. a second generally planar inner plate having an effective area smaller than the first plate;
- c. a flat, elastomeric, non-preformed, compressible sealing member between the outer and inner plates, said sealing member having an effective area greater than the effective area of the inner plate and being generally coincidental in shape with the inner plate.
- d. opposing sides of said sealing member each capable of forming a sealing edge to sustain a vacuum;
- e. means for connecting the outer plate to the inner plate and for compression of the 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 whereby a vacuum source may be connected to effect attachment of the construction to an object.
Dependencies are inferred from the claim text.