Abstract: A launcher is disclosed having means for directing and concentrically spreading, as well as dispersing, exhaust gases created by an internal combustion of an object, such as a missile, that is operatively launchable therefrom. The concentric duct provides the directing, spreading and dispersing means and cooperates with a cup having means to arrange a port in operative relationship with an exhaust outlet of the object being launched. The cup which mates with the concentric duct has one of its ends open to the ambient so that the exhaust gases are lead into and out of the concentric duct so as to be concentrically dispersed into the atmosphere.

Abstract: A modeling dough comprising gelled poly(vinyl alcohol), water and a filler provides a dough resistant to flaking, cracking, and crumbling. In the disclosed invention, the poly(vinyl alcohol) resin is gelled, thereby providing a water-based resin system that is not sticky yet very ductile. Prior to drying, the dough also exhibits the properties of bounceability and the ability to pick up newsprint. After the dough is air-dried, the poly resin serves to bind the components into a solid, durable product. The filler accounts for a large portion of the volume of the dough, so the overall volume is not greatly affected by water loss upon drying. The dough is water-based and easy to wash from skin, carpets, and other surfaces. Dyes and pigments can be easily incorporated into the formula. The dried product is sandable and paintable.

Abstract: A coloring system is provided in which an undercolor composition is applied to a substrate to thereby leave a colorless mark. The undercolor composition is then written over with an overcolor composition, thereby causing the undercolor mark to become colored. The overcolor composition may itself contain a colorant. In one embodiment, the color-changing effects are accomplished by employing a dye that is colorless in the presence of high pH and/or a reducing agent, but that becomes colored as the pH is lowered, as the undercolor colorant. In a second embodiment, the color-changing effects are accomplished by employing a dye that is colorless at low pH, but that becomes colored as the pH is raised, as the undercolor colorant.

Abstract: Pan paints and associated color-changing systems are disclosed. In a first embodiment, the color-changing system comprises an undercolor pan paint coloring composition comprising an undercolor dye whose coloring ability is destroyed in the presence of a pH of about 10 or greater and/or in the presence of a reducing agent; and an overcolor composition comprising a colorant capable of maintaining its characteristic color in the presence of a pH of about 10 or greater and/or in the presence of a reducing agent, and a base such that the pH of the overcolor composition is about 10 or greater and/or a reducing agent.

Abstract: A multiple coloring composition system is disclosed wherein the coloring effect of a first undercolor coloring composition is changed upon treatment with a second coloring composition, once the second coloring composition has been deposited over the undercolor coloring composition.

Abstract: A multiple coloring composition system is disclosed whose coloring effect is changed upon treatment with an overcolor, once the overcolor coloring composition has been deposited over the undercolor coloring composition. The multiple ink system comprises:(a) an undercolor aqueous coloring composition comprising an undercolor dye whose coloring ability is destroyed in the presence of an acid; and(b) an overcolor aqueous coloring composition comprising a colorant capable of maintaining its characteristic color in the presence of a pH of about 4 or less; and an acid sufficient to bring the pH of the overcolor composition to about 4 or less.

Abstract: A washable multiple coloring composition system is disclosed whose coloring effect is changed upon treatment with a second coloring composition, once the second coloring composition has been deposited over the undercolor coloring composition. The washable multiple ink system comprises:(a) an undercolor aqueous coloring composition comprising a compatable surfactant in an amount sufficient to provide washability and an undercolor dye whose coloring ability is destroyed in the presence of a pH of about 10 or greater and/or by a reducing agent; and(b) an overcolor aqueous coloring composition comprising a compatable surfactant in an amount sufficient to provide washability, a colorant capable of maintaining its characteristic color in the presence of a pH of about 10 or greater and/or a reducing agent, a base in an amount sufficient to yield a pH of the overcolor composition of about 10 or greater, and/or a reducing agent.

Abstract: A multiple coloring composition system for use on non-porous surfaces is disclosed whose coloring effect is changed upon treatment with a second coloring composition, once the second coloring composition has been deposited over the undercolor coloring composition. The multiple ink system comprises:(a) an undercolor aqueous coloring composition comprising a film forming resin and an undercolor dye whose coloring ability is destroyed in the presence of a pH of about 10 or greater and/or by a reducing agent; and(b) an overcolor aqueous coloring composition comprising a film forming resin, a colorant capable of maintaining its characteristic color in the presence of a pH of about 10 or greater and/or a reducing agent, a base in an amount sufficient to yield a pH of the overcolor composition of about 10 or greater, and/or a reducing agent.

Abstract: A conventional STOP/SLOW traffic control sign mounted on a pole is supported and remotely operated by a portable stand having a tubular support mounted on a foldable frame which also carries a remotely controlled drive assembly so that the sign can be operated at a safe distance even by a person with disabilities.

Abstract: An erasable marking composition comprising a noncarboxylated styrene-butadiene copolymer resin, a colorant, and a solvent. The composition can be applied to substrates by a variety of delivery means, such as porous-tipped and brush-tipped writing instruments, as well as brushes, and can be easily erased with a substantially nonabrasive eraser, such as a common pencil eraser, for an extended period of time.

Abstract: A modeling dough comprising gelled poly(vinyl alcohol), water and a filler provides a dough resistant to flaking, cracking, and crumbling. In the disclosed invention, the poly(vinyl alcohol) resin is gelled, thereby providing a water-based resin system that is not sticky yet very ductile. Prior to drying, the dough also exhibits the properties of bounceability and the ability to pick up newsprint. After the dough is air-dried, the poly resin serves to bind the components into a solid, durable product. The filler accounts for a large portion of the volume of the dough, so the overall volume is not greatly affected by water loss upon drying. The dough is water-based and easy to wash from skin, carpets, and other surfaces. Dyes and pigments can be easily incorporated into the formula. The dried product is sandable and paintable.

Abstract: A multiple coloring composition system is disclosed whose coloring effect is changed upon treatment with a second coloring composition, once the second coloring composition has been deposited over the first coloring composition. The multiple ink system comprises:(a) a first aqueous coloring composition comprising a first dye whose coloring ability is destroyed in the presence of a bleach; and(b) a second aqueous coloring composition comprising from about 1% to about 20% by weight of a bleach; and from about 0.1% to about 12% by weight of a colorant capable of maintaining its characteristic color in the presence of a bleach and/or a pH of about 10 or greater. The multiple coloring composition may further comprise a base in an amount sufficient to elevate the pH of the second aqueous coloring composition to a level of from about 10 to about 12.

Abstract: A multiple coloring composition system is disclosed whose coloring effect is changed upon treatment with a second coloring composition, once the second coloring composition has been deposited over the undercolor coloring composition. The multiple ink system comprises:(a) an undercolor aqueous coloring composition comprising an undercolor dye whose coloring ability is destroyed in the presence of a pH of about 10 or greater and/or by a reducing agent; and(b) an overcolor aqueous coloring composition comprising a colorant capable of maintaining its characteristic color in the presence of a pH of about 10 or greater and/or a reducing agent, a base in an amount sufficient to yield a pH of the overcolor composition of about 10 or greater, and/or a reducing agent.

Abstract: A multiple coloring composition system is disclosed whose coloring effect is changed upon treatment with a second coloring composition, once the second coloring composition has been deposited over the first coloring composition. The multiple ink system comprises:(a) a first aqueous coloring composition comprising a first dye whose coloring ability is destroyed in the presence of a bleach; and(b) a second aqueous coloring composition comprising from about 1% to about 20% by weight of a bleach; and from about 0.1% to about 12% by weight of a colorant capable of maintaining its characteristic color in the presence of a bleach and/or a pH of about 10 or greater.The multiple coloring composition may further comprise a base in an amount sufficient to elevate the pH of the second aqueous coloring composition to a level of from about 10 to about 12.

Abstract: A modeling dough comprising gelled poly(vinyl alcohol), water and a filler provides a dough resistant to flaking, cracking, and crumbling. In the disclosed invention, the poly(vinyl alcohol) resin is gelled, thereby providing a water-based resin system that is not sticky yet very ductile. Prior to drying, the dough also exhibits the properties of bounceability and the ability to pick up newsprint. After the dough is air-dried, the poly(vinyl alcohol) resin serves to bind the components into a solid, durable product. The filler accounts for a large portion of the volume of the dough, so the overall volume is not greatly affected by water loss upon drying. The dough is water-based and easy to wash from skin, carpets, and other surfaces. Dyes and pigments can be easily incorporated into the formula. The dried product is sandable, carveable and paintable.

Abstract: In one form, the invention is a washable dye-containing composition comprising an acid dye, a dye vehicle, and an organic sulfonate in an amount of at least about 10% by weight of the composition. More specifically, the invention is, in one preferred embodiment, a washable marker ink, comprising an acid dye, water, and an aromatic sulfonate in an amount of at least about 10% by weight of the composition. In another embodiment, the composition of the invention is in the form of a water-soluble tempera paint comprising an acid dye, water, fillers, thickeners, opacifiers, and an organic sulfonate in an amount of at least about 10% by weight of the composition. Other water-soluble dye-containing compositions having enhanced skin and fabric fugitivity are within the scope of the invention as well.

Abstract: A sealing device for sealing a side of a slideable door. The sealing device includes a seal member, a striker plate attached to the sealing member, an outer wall, and a plurality of links in the form of resilient ribs positioned between the seal member and the outer wall. The resilient ribs force the seal member downwardly and laterally against the side of the door when the door engages the striker plate. A web may be attached to the resilient ribs, the seal member and the outer wall. The web prevents the passage of air between the ribs, and retracts the seal member from the door when the door ceases to exert a force against the striker plate.

Abstract: A safety device for attachment to a wiper arm assembly to prevent metal from contacting and scratching the windshield if the wiper blade is lost or damaged. The device includes a body which is attached to a wiper arm and has a wheel member journalled to the body. The wheel is positioned to contact the windshield and freely roll across the glass with the wiper arm if the wiper blade is missing.

Abstract: A baseball or softball having a size, weight, sound and rebound in accordance with standards set for the game. The ball is formed of a spherical plastic shell covered with a conventional sewn cover. The plastic shell is a thermoplastic consisting of a mixture of "Surlyn" ionomer with about 50% ethylene vinyl acetate. The proportions are variable to achieve the desired characteristics, the "Surlyn" providing strength and sound while the EVA provides softness and ease of thermo-welding. The shell is made by injection molding hemispheres and thermally welding two hemispheres together. As an alternative, the shell can be formed with a hole, and liquid components of an expanded plastic placed into the shell and expanded to fill the shell. The shell still provides all characteristics desired, and the expanded plastic is for weight only.