Abstract: An improved method of pothole repair is described wherein the bond between the pothole area and the asphaltic patch repair material is significantly improved. The method is characterized by applying an aqueous solution of a water soluble acid salt of a fatty amine, amido-amine polyamine or cyclic amine to the pothole area before adding the patch material to the cavity.

Abstract: An elastomer article capable of being pressurized has a hollow extending therethrough. An elastomer free grid, generally in the form of a woven fabric, is located on the interior of the article in the vicinity of the hollow and prevents the same from being removed therefrom. An elastomer patch is utilized therewith.

Abstract: A method for repairing and reinforcing a torn plastic tote is provided. The edges of the tears are bevelled and the tears are then welded with a plastic material which is of the same type as the material from which the plastic tote is made. A strip of plastic material is formed into a closed loop by welding the ends of the loop together. The loop is placed around the upstanding walls, preferably around the upper edge thereof and the loop is then spot welded to the upstanding walls. In an alternative embodiment, only a loop is placed around the tote and the tears are not welded.

Abstract: A method for sealing a pipe-joint comprises injecting from a point or points 5 externally of the pipe an anaerobically curable monomer into the joint gap in such quantity that the monomer forms a contiguous band 9 within the joint gap and allowing the monomer to cure within the joint gap.

Abstract: A support for a stretched recording film and method of attaching the film to the support. The support includes a flat disk-shaped base, an annular upstanding rim which terminates in a reference surface, an annular radially extending bonding lip which includes a bonding surface inclined with respect to the plane of the base, and a groove separating the reference surface and the bonding surface. The method of attaching the film to the support includes deflecting the center of the base to decrease the diameter of the bonding surface, bonding the film to the bonding surface, and ceasing to deflect the base so that the diameter of the bonding surface increases to induce tension in the film. A second protective layer of film may be simultaneously stretched over and bonded to the first layer of film.

Abstract: Method and apparatus for repairing damaged tapered radar radomes. The method comprises the steps of preparing the damaged skin layers, affixing corresponding patches thereto and trimming same, where only the radome skin has been damaged, and, when both skin and core have been damaged, includes preparing the damaged skin layers and core, affixing an oversized repair core section in said prepared core, trimming the repair core section to an appropriate local configuration, affixing repair patches to the prepared skin layers and trimming same. An apparatus in practice of the present invention comprises a support affixable to the surface of the radome, at least one circumferential track device coupled to the support, at least one meridional track device coupled to the circumferential track device, and a router carriage assembly coupled to the meridional track device. A particular router device capable of precision vertical adjustment to 0.0005" is also disclosed for practice with the above apparatus.

Abstract: A procedure for providing an overlay on a concrete slab or similar subsurface including the steps of placing a plurality of anchor holes into the concrete slab to be repaired and/or providing an anchor channel at its periphery, providing a bed of fibers on the exposed surface of said concrete slab and extending into and filling said anchor holes and/or channel, infiltrating a flowable cement slurry throughout the fibers and into the anchor holes and/or anchor channel, and curing the slurry to form an overlay which has integral fiber-reinforced anchor portions extending into the slab.

Abstract: A method and apparatus for on-site repair and refinishing of building panels that have been discolored or worn is provided. In one embodiment, worn acoustical tiles are first removed from their installed location ceiling and worn parts are cut off. Replacement parts are then fitted to the remaining portion of the worn tile and adhesively attached. The repaired tile is then sprayed with adhesive and a sheet of decorative material is attached. Finally, the repaired tile with the decorative material attached is run through pinch rollers, resulting in a neat and secure bonding. The tile is then re-installed in its original location with the decorative material exposed.In another embodiment, a worn or discolored ceiling tile is removed from the ceiling and placed into a pre-fit, semi-rigid decorative covering. The tile and decorative covering are then replaced in the ceiling in the original position of the tile with the decorative covering exposed.

Abstract: This method of repairing gasoline tanks is designed to be safe in application and lasts for the life of the tank. Primarily, it consists of employing the use of a glass-resin blend, fiber, peroxide, a roller, and applicator brush, a razor knife, and a sandblasting machine. Fiber cloth patches are cut to size and placed over the leak holes after they have been found by pouring gasoline on the tank, and fiber cloth is then cut to a suitable size and formed to the contour of the tank, after which, the glass resin is applied, etc.

Abstract: A paneling member for the interior of automotive vehicles, especially a dashboard, is constructed of at least two covered polyurethane foam portions which are provided with a stiffening support element embedded in the foam. The foam body portions have different weights per unit volume and compressive strengths and, accordingly, different degrees of hardness. A relatively firm foam body with an ABS or PVC sheet covering is used for the upper portion of the paneling member. A softer foam body with a covering selected from one of a variety of materials is used to form the lower portion of the paneling member.

Abstract: A method and paint damage repair device is disclosed; the device comprising a transparent polymeric film base, a paint coating on the surface of the film base, an adhesive on the paint coated film base and a removable paper backing on the adhesive for removal to expose the adhesive for adhesive application of the paint coated film base to the damage painted surface for the repair of such surface.

Abstract: Articles comprising a thermoplastic substrate bearing rupturable microcapsules in a binder on at least one surface thereof. These articles can be applied by means of heat and pressure to porous objects. The process of applying the articles to porous objects further results in partially embedding the microcapsules in the substrate. Thermoplastic substrates having rupturable microcapsules partially embedded therein, but not having a binder, are another aspect of this invention.

Abstract: A method of applying and repairing veneers and the like comprises the following steps:sticking a sheet to the outside surface of the veneer;unsticking the veneer from its support;sticking the sheet to a substantially rigid transparent plate;repairing the veneer and then resticking it to its original support.For applying a previously made up mosaic coating, a transparent temporary support plate is used enabling the composition to be offered up for visual inspection prior to final fixing.

Abstract: A decorative magnetic occluding device for decoratively and uniformly occluding opposing surface portions of a non-magnetic panel which includes a matched pair of sheet magnets, each being the mirror image configuration of the other. Each magnet has a decorative surface, which is a mirror image configuration of the decorative surface of the other magnet, and an opposite magnetized surface. The magnetized surfaces have alternating North and South stripes of polarity, with the stripes of polarity of one of the magnetized surfaces being offset by one stripe from the corresponding stripes of polarity of the other of the magnetized surfaces. Each magnet has visual orientation means to ensure that the corresponding stripes of polarity of each magnet will be opposite in polarity when the magnets are mated.

Abstract: A membrane for the repair of road surfaces, particularly for the retardation of reflective cracking from an old road surface to a newly-applied overlay. The membrane comprises a glass fiber mat impregnated with a blend of asphalt, a block copolymer and a mineral filler. The membrane, in the form of a complete covering or relatively small patches applied directly over a crack, is thermally adhered to the old road and to the overlay by the heat of the overlay itself. The membrane has a low modulus of elasticity, particularly at below freezing temperatures, to minimize crack-propagating stresses and to distribute both thermal and traffic stresses over a broader area of both the old road surface and the overlay.

Abstract: The within inventive method for repairing a drywall surface (i.e. gypsum boards) or a plaster wall or ceiling, obviates the need for spackling and contemplates instead the use of a plastic film in covering relation over the surface defect and in this position properly prepared, so that the plastic is totally devoid of wrinkles and in firm attachment to the surface, with the result that the repair cannot be detected from the original surface.

Abstract: A repaired elastomer article having a cut or crack entirely therethrough. An interior cavity is located in the vicinity of the cut or crack and has a filler therein. A treating agent is located about the cut portion on the inner surface of the article and an amine curable polymer or prepolymer resides over said treating agent. A cured elastomeric patch resides over said amine curable polymer or prepolymer. Since the amine curable polymer or prepolymer cures at ambient temperatures, the repair of the elastomer article can occur in situ. The invention is especially useful in the repair of tires.

Abstract: An apparatus and process are provided for the production of plywood. The apparatus is adapted to form plywood panels without prior patching of defects in the veneer sheets used to form the panel. The formed panel then is electro-optically scanned to identify and locate defects. The sensed defect data is stored in a control unit which in turn directs a defect removal apparatus and a patcher to appropriate locations for removing and patching the defects.

Abstract: Patch assemblies for use in patching holes in a paper web includes a recyclable paper patch which is adapted to be stripped from a release coated carrier and adhesively secured to the paper web over a hole so that the area over the hole is free of exposed adhesive.

Abstract: A repair patch kit for repairing holes in panels of composite materials includes a bolt having a rigid washer of about the same diameter as the hole to be repaired. The rigid washer bears against a slit disc that is substantially larger than the hole. The slit disc can be twisted to open the slit, and the slit can be inserted over the edge of the hole. The disc can then be "threaded" or rotated through the hole by merely revolving the bolt around the hold periphery. On the blind-side of the panel, the disc slit closes and a full disc form is presented to the blind-side of the panel. A set of resin-impregnated fabric plies is pushed through the hole behind the slit disc on the bolt and is pressed against the marginal regions of the hold on the blind-side of the panel by the slit disc.

Abstract: A patch for the underwater patching of a urethane-based coating membrane is provided. The patch comprises a section of nonwoven, fabric-reinforced urethane-based membrane coated with a composition comprising a polyurethane; non-volatile extender; a volatile solvent; and a water-insoluble, heavier-than-water, inert filler material dense enough to make the composition denser than water. Methods for effecting the patching or repair using the patch are also provided.

Abstract: Joints between predecorated gypsum wallboard concealed by relatively thin battens made of predecorated wallboard paper narrow strips with pressure-sensitive adhesive on the back, applied by mechanics using rolls of predecorated paper with adhesive and release paper on the back side of the predecorated paper.

Abstract: The invention relates to the mounting of a glass sheet, particularly a windshield, on the recessed surface in the sheet metal of the frame of an automobile body, by means of an adhesive strip. According to the invention, the strip is applied simultaneously by co-extrusion with a flexible wire or filament of high tensile strength, said application being over the entire periphery of the glass sheet. If it is found necessary to remove the glass sheet, the wire serves as a cutting element to cut the strip in two.

Abstract: A method and apparatus for repairing a bullseye crack or the like in a laminated windshield. The method comprises the steps of: applying one end of a cylinder in sealed relationship against the windshield to circumscribe the opening of the crack; charging a predetermined amount of resin into the cylinder; inserting one end of an annular piston into the cylinder and advancing the piston towards said one end of the cylinder whereby said resin rises within the piston; sealing the other end of the piston; retracting the piston away from said one end of the cylinder to create a vacuum within the cylinder; and after an interval unsealing said other end of the piston whereby atmospheric pressure is applied to the resin in the cylinder to cause the resin to flow into the crack.

Abstract: An improved patch and method of repair of the integrity and/or surface imperfections of a structure which is defective because of accidental damage or flaws during the course of manufacture or subsequent use and handling. The invention relates to the use of a fibrous cloth which is impregnated by a fast curing acrylic-based adhesive composition which is utilized with an activator/accelerator that can be applied to the margins of the faulty workpiece and thence to the overall impregnated cloth to quickly cure it at ambient temperature. The improved material provides good adhesion to a wide variety of materials including unprepared metals, painted metals, plastics and moist or oil contaminated surfaces and displays a high impact strength heretofore not found in such materials.

Abstract: Foamable hot-melt adhesives comprised of a per se known hot-melt adhesive having a foaming additive therein, for example an organic azo compound. These adhesives can function in a purely physical foaming manner but can also function as crosslinking material, i.e. as solidifying and bonding materials. The foamable hot-melt adhesives of the invention can be used, for example, in sealing cable ends, for filling any desired aperture in the construction field, for sealing windows, doors, etc. or for sealing articles of manufacture.

Abstract: A primer composition for use in the bonding of asphalts comprising the reaction product of an elastomer and a terpene resin. The primer composition of this invention can be used in the treatment of substrates to which asphalts are bonded to improve the bonding relationship between the substrate and the asphalt, such as in road-paving applications, roofing applications and the like.

Abstract: Overlaid plywood is made by filling surface defects on a plywood panel with a thermosetting resin; overlaying the filled surface(s) with sheet(s) of overlay paper and then compressing the panel, while heating the panel. Gluelines in the plywood veneer and in the overlay paper(s) are cured during the hot pressing operation, which also flattens and hardens the resin-filled defects to form a smooth-surfaced overlaid plywood panel.

Abstract: A patch closure system for joining heat recoverable sheet material, especially for covering a substrate where the joined material is to be recovered around the substrate, comprises a layer of adhesive on one surface, a part of which is a pressure-sensitive adhesive and the remainder of which is a heat-activatable adhesive. The pressure-sensitive adhesive layer is of such an area and is placed such that, when the patch is placed over the overlap between the edges of the heat recoverable sheet material, the patch will continue to cover the overlap when the sheet material is recovered, even if the heat-activatable adhesive layer has not been used to attach the patch to the sheet material.

Abstract: A method of repairing breaks in plastic sheet members such as those used on dashes of automobiles. The abutting edges of the crack formed at the break are coated with a liquid cyanoacrylate adhesive. The crack is filled with a particulate material, preferably hardened polyurethane foam or graphite which has been ground to a particle size corresponding roughly to that of common table salt. The particulate filler is soaked with the liquid cyanoacrylate adhesive and the liquid is then dried. For cracks of substantial depths, several layers of filler soaked with the adhesive may be utilized to completely fill the crack. After the filler composition has completely hardened and the repair smoothed by sanding, the immediate zone may be textured by spraying with a liquid vinyl lacquer. When the lacquer is dry, the region may be painted to blend with the remainder of the member.

Abstract: A magnetic recording medium which comprises a substrate and a magnetic layer comprising magnetic powder and a resinous binder formed on the substrate, characterized in that the magnetic layer further comprises a lubricant and an unsaturated fatty acid ester, which is improved in durability.

Abstract: A construction material adapted for a wide variety of uses is shown, as, for example, in repairing cracks, holes and dents in the hulls and bodies of boats and land vehicles, leaks in gas and liquid conduits such as exhaust pipes and water pipes, and leaks in gas and liquid tanks and other containers; repairing fractured poles, booms, spars, antennas, and the like, and strengthening similar structures that are not fractured; patching roofs, gutters, and drainpipes; sealing leaking containers of pressurized fluids, such as air-conditioning systems, swimming pools, and hydraulic hoses; and electrically insulating all manner of articles. The product comprises a flexible web impregnated with a pliable mastic in a sealed package which maintains its contents in stable soft and pliable condition until opened, after which the web is applied to the use intended and the mastic begins to harden in place upon exposure to water, or to only the moisture in the air.

Abstract: A method for repairing ballistic impact damage to structural panels of vehicles comprising the steps of cutting out the damaged area in the panel in a preselected size circular cutout, bending a circular patch including an exterior circular metal sheet laminated to a smaller circular interior cloth layer to match the surface convolutions of the panel, impregnating the interior cloth layer with resin and attaching the patch to the panel. In this manner the patch is bent to fit before impregnation and is fixed to the bent shape by fixing the cloth layer.

Abstract: A vinyl repair compound and two step vinyl repair method provide an exceptionally strong and long wearing repair. The repair compound includes vinyl resins, a solvent, a plasticizer and silica filler, has a paste-like consistency and air dries. The repair process entails the following: trimming away the damaged material, placing backing material behind the damaged area if necessary, filling the repair area flush with the surface of the surrounding material with the repair compound and allowing it to air dry. Due to shrinkage of the compound as it dries, a depression is formed which is then filled with a conventional heat curable plastisol vinyl repair compound. If necessary, smooth or grained release paper is placed over the repair area, heat is applied to cure the plastisol compound and the repair is allowed to cool.

Abstract: A knitted unidirectional mat of glass rovings, factory coated with elastomeric modified asphalt, is used to reinforce a crack in an old road before applying a new layer of asphalt-based pavement.

Abstract: A metal laminate is formed of a metallic member suitable to be repeatedly manually molded to conform to and retain the shape of an associated surface prior to being affixed thereto. An adhesive backing is on one side of the member and the backing is covered by a protective peelable coating.

Abstract: This invention concerns coating and impregnating compositions for concrete of an essentially anhydrous character comprising (1) a monomer blend of (a) dicyclopentenyl or dicyclopentenyloxyalkyl methacrylate or acrylate and (b) hydroxy alkyl methacrylate and (2) a polymerization catalyst of (a) an organic peroxide and an aromatic amine accelerator, or (b) a polyvalent metal salt or complex and an organic hydroperoxide, or (c) mixtures of (a) and 0.0005% to 2% by weight, based on total amount of monomers, of a polyvalent metal salt or complex, or (d) mixtures of (a) and (b), which can be applied to porous surfaces such as concrete as an impregnant and which can be polymerized in situ in order to reduce the permeability of the surface and to provide hard, continuous, hydrophobic, wear resistant and weather resistant surfaces.

Abstract: Plaster core laminated wallboard is repaired or finished with a repair article comprising a substantially rigid steel plate having integral teeth forcibly insertable into the wallboard to hold the article in place over the damaged area, and a flexible cover portion formed of wallboard facing paper overlapping the edges of the plate and bonded thereto. The thickness of the paper cover portion may be tapered toward the outer edges thereof to form a smooth transition from the cover portion to the existing wallboard surface. Holes in the plate near the edges or corners thereof provide for increased contact of wallboard repair compound with the paper cover portion. The article may be formed in different configurations for covering plumbing openings, exterior corners and elongated stress cracks or seams.The wallboard is repaired by cutting a recess into and through the paper surface lamination of said wallboard to the outline of the plate portion of the repair article.

Abstract: An adhesive resin application system which requires no external heating apparatus, and which is operative in the absence of a reactive atmosphere, is disclosed. The system provides its own heat by employing an adhesive material containing reactants which react exothermally when electrically ignited. After ignition of the reactants, sufficient heat energy is liberated by the exothermic reaction either to plasticize a thermoplastic resin or to cure a thermosetting resin and therby bond together two closely spaced objects.This application is a continuation-in-part of application Ser. No. 489,006, filed Apr. 27, 1983, which is a continuation-in-part of application, Ser. No. 929,120, filed July 28, 1978, both now abandoned.

Abstract: The repair of a reinforced elastomer article having a hollow therein relates to utilizing an amine curable polymer or prepolymer and a cured elastomer patch. The hollow in the elastomer, which can extend either partially or completely through the article, is filled with a gum rubber which is thereafter cured by conventional means, such as with spotters. The area beneath the now filled hollow is coated with a treating agent, followed by the amine curable polymer or prepolymer and a cured patch. The polymer is then cured at room temperature. One area of use is in the repair of tires.

Abstract: Means and method for repairing an inflatable ball damaged to the extent that its ability to remain inflated has been impaired in which the method comprises the steps of removing a portion of the ball covering so as to permit the removal of the damaged bladder, if any, and the insertion of a new or replacement bladder; maintainably positioning the new or replacement bladder within the ball covering for ease of inflation thereof; and the restoring of the surface integrity of the ball cover while providing external access through the restored surface to the inflation valve of the new or replacement bladder. Apparatus has been disclosed for carrying forth the steps of the method and the end result of practicing the method is seen to be a manufacture comprising a repaired inflatable ball.

Abstract: A process for replacement of damaged parts of a vehicle or the like is disclosed. The process includes placing a manufactured overdimensioned part over the damaged part and adhering the overdimensioned part to the damaged part. The part may be fabricated from acrylic and may include an aperture. The acrylic part or any acrylic material may be illuminated by placing an illuminating means within the aperture.

Abstract: A patch closure system for joining heat recoverable sheet material, especially for covering a substrate where the joined material is to be recovered around the substrate, comprises a layer of adhesive on one surface, a part of which is a pressure-sensitive adhesive and the remainder of which is a heat-activatable adhesive. The pressure-sensitive adhesive layer is of such an area and is placed such that, when the patch is placed over the overlap between the edges of the heat recoverable sheet material, the patch will continue to cover the overlap when the sheet material is recovered, even if the heat-activatable adhesive layer has not been used to attach the patch to the sheet material.

Abstract: Surface defects in a cured, molded thermoset fiberglass reinforced (FRP) part can be repaired by filling the defect or void with an excess of a thermosetting conductive repair material, applying pressure and heat sufficient to cure said material without substantial shrinkage of said material, removing the pressure, cooling and finishing said parts to the original surface contour.

Abstract: A damaged area of a fabric is repaired by removing the damaged area from the fabric while folded across the damaged site, and thereafter bonding a patch and underlying thermoplastic impregnated pad to each other and to the fabric with the application of heat.

Abstract: There are disclosed polymer concrete compositions of essentially anhydrous character comprising (1) an inert inorganic particulate material, such as sand, crushed stone or rock, and mixtures thereof, mixed with (2) a monomer blend of (a) dicyclopentenyloxyalkyl methacrylate or acrylate and (b) hydroxyalkyl methacrylate to form a paste or slurry suitable upon addition thereto of (3) a polymerization catalyst of (a) an organic peroxide and an aromatic amine accelerator, or (b) a polyvalent metal salt or complex and an organic hydroperoxide, or (c) mixtures of (a) and 0.0005% to 2% by weight, based on total amount of monomers, of a polyvalent metal salt or complex, or (d) mixtures of (a) and (b), to be used to form or to patch previously formed or laid, concrete floors and road pavements or as a coating for a variety of substrates such as metal and plastic sheet.

Abstract: A hole, particularly an accidental perforation, is closed by manoeuvering a bladder (g) into the hole employing a hollow rod (f) on which the bladder is mounted at one end. An operator operating from the other end of the rod actuates a device such as a triggered valve to cause the components of a settable foamed plastics material to pass (via tubes b and rod f) from their sources (in a) to fill the bladder (g) so that it closes the hole. The settable foamed plastics material is preferably polyurethane foam. The bladder may be of natural or synthetic rubber and may be protected against tearing by a textile envelope. The sources of foamed plastics material may be either in a portable kit (a) or rupturable containers within the bladder (g) or rod (f).

Abstract: A windshield repair device comprising a vacuum cup with a built-in piston and cylinder assembly is characterized by a transverse opening in the cylinder so that when the piston is partly withdrawn, gas bubbles can be drawn out of the repair liquid by the vacuum holding the cup in place against the glass. In operation, after the bubbles are removed from the liquid, the piston is moved toward the glass. The piston closes off fluid communication through the transverse opening in the cylinder and as it moves further toward the glass, it forces repair liquid into the damaged area. The invention permits the cylinder itself to be used as a reservoir for repair liquid, while allowing gas bubbles to be removed from the liquid by the vacuum holding the cup in place.

Abstract: A fabric repairing assembly is provided with an impact cutter which is operable by a plunger that is slidably mounted in an embracing housing. The assembly is further provided with a heater which includes a sleeve that slidably receives the said housing and wherein the housing can be moved to cause the plunger to press the heater against cloth undergoing repair.

Abstract: A method of repairing damage to a porous refractory material coated with a glass coating (16) comprising applying hydrolyzed tetraethyl orthosilicate to the damaged area, curing said tetraethyl orthosilicate, applying to said damaged area a pliable filler (30) comprised of hydrolyzed tetraethyl orthosilicate and powdered refractory substrate (11) and heating the damaged area to cure filler (30).