1. A one-use dispensing device for separately storing, dispensing, and applying proportional amounts of two substances, comprising:
a pair of spaced apart flexible receptacles disposed on a flat flexible thin web for each substance, each of said receptacles including a flat edge portion having an outlet therein;
a fold line extending over the flat flexible thin web and disposed equidistant between the receptacles;
wherein each of the receptacles has a circular base and a flat circular upper surface, wherein a diameter of the upper surface is smaller than a diameter at the base;
wherein said device being foldable about said fold line so that the receptacles are superimposed;
a pair of rupturable outlets each having a weakened region and an inlet, and each being in fluid communication with a respective one of said pair of receptacle outlets;
wherein a tear line extends in between and separates each one of said pair of inlets and respective one of said pair of receptacle outlets;
wherein said receptacle outlets converge towards the fold line; and
wherein said receptacles include indicia indicating where a thumb and forefinger of a user should be positioned to allow for substantially complete evacuation of the receptacle through the receptacle outlet;
whereby when the device is folded about said fold line, said receptacle outlets and said rupturable outlets are superposed, respectively, for dispensing and mixing the substances when the receptacles are squeezed; and
whereby the device is configured to be manipulated by a user in a one-handed operation to dispense the two substances.
2. A dispensing device as defined in claim 1, wherein said receptacles are disposed such that one of said receptacles on one side of the fold line is a transposed mirror image of the other receptacle on the other side of the fold line and said receptacles are substantially equidistant from the fold line.
3. A dispensing device as defined in claim 1, wherein said device comprises two flexible laminae positioned adjacent one another and sealed together so as to define said two receptacles.
4. A dispensing device as defined in claim 3, wherein the laminae are selected from a group comprising foil, polyethylene, polypropylene, polyvinyl chloride, polyvinyl acetate and foil coated with polypropylene.
5. A dispensing device as defined in claim 3, wherein each of the laminae are composed of different materials.
6. A dispensing device as defined in claim 1, wherein upon said substances being squeezed from said device and meeting, said substances undergo a chemical or physical reaction.
7. A dispensing device as defined in claim 1, wherein one of said two receptacles contains an epoxy and the other of said two receptacles contains a hardener.
8. A dispensing device as defined in claim 1, wherein the receptacles contain foodstuffs.
9. A dispensing device as defined in claim 1, wherein the receptacles contain materials selected from a group comprising pharmaceuticals, other liquids, pastes and gels used in medical or dental work.
10. A dispensing device as defined in claim 1, wherein said device is adapted to be folded and manipulated by a user in a one-handed operation such that said receptacle outlets are easily aligned and said substances contained within said receptacles are simultaneously dispensed, mixed and proportionately applied.
11. A dispensing device as defined in claim 1, wherein said outlets are positioned at or adjacent to the side edges of the dispensing device.
12. The dispensing device according to claim 1, wherein the two substances are epoxy and a hardener.
13. A dispensing device as defined in claim 12, wherein said device is adapted to be folded and manipulated by a user in a one-handed operation such that the receptacle outlets are easily aligned and the epoxy and hardener are simultaneously dispensed, mixed and proportionately applied.
14. A dispensing device as defined in claim 1, wherein said receptacle outlets are disposed such that one of said receptacle outlets on one side of the fold line is a transposed mirror image of the other outlet on the other side of the fold line and said receptacle outlets are substantially equidistant from the fold line of fold, whereby the substances are dispensed and mixed when the receptacles are squeezed.
15. A dispensing device as defined in claim 1, wherein the receptacles are approximately 7.5 mm in radius at their base and approximately 5 mm at their top.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. For obstructing migration of particulates and precipitation between a perimeter of a pipe stickpipeline passage through a wall of a pipe fusion chamber and circumferential surfaces of pipe stickspipelines of various diameters within a selected range of diameters to be passed therethrough, a seal comprising:
a frame contiguous with a perimeter of the passage and defining an opening therein; and
a plurality of sheets of cloth each having an inner edge and an outer edge, each of said inner edges, with said plurality of sheets of cloth taken together in overlapping serial relationship about a perimeter of said opening and covering said opening, overlapping an anticipated center axis of a pipe stickpipeline to be passed through said opening;
said inner edge of each said sheet of cloth being at least twice as long as a distance across said opening taken along its respective inner edge in its pipe stickpipeline center axis overlapping condition;
said outer edge of each said sheet of cloth being pleated and fixed to said frame and said inner edge of each said sheet of cloth being gathered on an elastic band;
each said elastic band having a free state length equal to its respective distance across said opening and being elastically stretchable to said length of its respective said inner edge, ends of each of said elastic bands being fixed to said frame at points determining said length thereof;
whereby, when a face of a pipe stickpipeline to be passed through the seal is aligned on said anticipated center axis and pushes said plurality of sheets of cloth away from said frame, said pleats and said elastic band cooperate to allow said inner edges of said plurality of sheets of cloth to slide over the face and hug substantially the entire outer circumference of the pipe stickpipeline.
2. A seal according to claim 1, said opening in said frame being at least half again as great as a greatest diameter of the range.
3. A seal according to claim 2, said inner edge of each said piece of cloth being at least twice as long as a distance across said opening taken along its respective inner edge in its pipe stickpipeline center axis overlapping condition.
4. A seal according to claim 1, said opening being polygonal.
5. A seal according to claim 1, said opening being orthogonal.
6. A seal according to claim 1, said opening being square.
7. A seal according to claim 6, said square opening having sides of length approximately 1.5 times an outer diameter of a largest diameter pipe to be passed through the chamber.
8. A seal according to claim 6, said plurality of sheets of cloth comprising four rectangular sheets of cloth having a length approximately twice said length of said opening sides and a width greater than half said length of said opening sides by approximately a quarter of a smallest pipe diameter to be passed through said chamber.
9. A seal according to claim 8, each of said plurality of sheets of cloth having pleats at spaces variably symmetrically distant from a center of a long edge thereof.
10. A seal according to claim 9, each of said plurality of sheets of cloth having its pleated edge fastened to a different side of said frame and having ends of its elastic band fixed to opposite sides of said frame with said band substantially parallel to its respective pleated edge and its short edges fully extended on their respective opposite sides of said frame.
11. A seal according to claim 10, opposite ones of said plurality of sheets of cloth overlapping each other by approximately half of an outer diameter of a smallest diameter pipe to be passed through the chamber.
12. A seal according to claim 11, said pleat spaces, an elasticity of said elastic bands and said opposite sheet overlaps being coordinated to permit said gathered edges of said sheets to hug a circumference of a pipe within a range of said largest and smallest outer diameters centrally disposed between said gathered edges.