Abstract: This invention includes repair of an existing underground sump without the need for costly and time consuming excavation. A plurality of liner-forming pieces are placed inside the underground sump to create a liner preferably substantially conforming to the interior dimensions of the sump. The pieces are joined together to form a unitary containment shell by first taping and then using fiberglass cloth and fiberglass resin. A layer of gel-coat is applied to the surface of the shell to create a fluidtight containment chamber within the sump. Some of the liner-forming pieces can have openings formed therein to accommodate the pipe entries corresponding to those in the sump.

Abstract: The strength of composite patches is improved over conventional bolted or bonded patches by including Z-pins in the patch/parent structure interface to provide a mechanical link with small stress concentration between the patch and the parent structure. In some cases, we achieve a stronger repair removing the pins to leave holes that fill with resin from the patch during the curing or bonding operation.

Abstract: A method of repairing an existing pipe includes steps of introducing at least one leading pig into the existing pipe through one open end thereof, introducing behind the leading pig a necessary amount of adhesive agent into the existing pipe through the same open end thereof, fixing one end of a liner tube at the above open end of the existing pipe, in a manner such that the liner tube may be reversed into the existing pipe, and providing a negative pressure into the existing pipe through an opposite open end thereof to cause the leading pig and the adhesive agent to move forwardly and thus cause the unfixed portions of the liner tube to be reversed into the existing pipe. The adhesive agent is caused to move through the existing pipe in the form of a plug flow, thereby coating the whole internal surface of the existing pipe with the adhesive agent, ensuring that the liner tube reversed into the pipe may adhere to the internal surface of the existing pipe.

Abstract: An apparatus for applying non-gravitational pressure to a surface includes a frame structure having a longitudinal axis, a pair of connecting members coupled to the frame structure along parallel axes normal to the longitudinal axis of the frame structure, vacuum fasteners coupled to the connecting members to secure the frame structure on an underlying surface, a vacuum pump mounted on the frame structure for activating the vacuum fasteners and a positive pressure pump mounted on the frame structure for inflating a collapsible diaphragm to apply pressure to the underlying surface. The apparatus is useful for applying doublers to aircraft components to repair localized damage.

Abstract: A novel thermally reworkable anisotropic conductive adhesive composition for attaching a semiconductor device to a substrate is provided. The composition comprises(a) a thermally reworkable crosslinked resin produced by reacting at least one dienophile having a functionality greater than one and at least one 2,5-dialkyl substituted furan-containing polymer, and(b) at least one electrically conductive material present in an effective amount to provide a conducting medium in only one direction.

Abstract: Windshield repair tool has an injector for injecting liquid resin into fractures and pits in broken windshields. The injector has an injector cylinder and a plunger that applies pressure to resin in the cylinder for injecting the resin into the fracture or pit. The plunger itself includes an outer sleeve and an inner plunger component biased forwardly in the outer sleeve by a coil spring. The pressure on the resin is monitored and can be controlled according to the amount that the plunger stem projects from the outer end of the plunger sleeve. This avoids insufficient or excessive filling of the fracture or pit.

Abstract: A seal for sealing a toner filling aperture of a housing of a refilled toner cartridge is provided. The cartridge includes a ruptured closure positioned on the housing adjacent the aperture. The housing and the closure cooperate to define a non-planar surface adjacent the periphery of the aperture. The seal includes a body having a first surface thereof conforming to the periphery of the aperture. The body has an opening therein. The seal also includes a member secured to a second surface of the body. The second surface is opposed to the first surface. The seal also includes an adhesive secured to the first surface of the body. The adhesive conforms to the non-planar surface and seals the body to the closure and the housing so as to permit the cartridge to be sealed without removal of the closure.

Abstract: A flexible liner is formed from a resilient material and includes a back side surface having a number of outwardly projecting members that extend a distance away from the liner. The flexible liner is in sheet form for rehabilitating surface sections, and is not in the form of a tube to cover an entire surface diameter. The outwardly projecting members each have a head enlarged profile configured to provide a strong mechanical lock with a carrier that is injected within an annular space disposed between the liner back side surface and the underlying substrate surface in need of surfacing or rehabilitation. The liner is positioned adjacent the structure surface by use of a collapsible, expandable form, and a carrier is injected within the annular space disposed therebetween so that the liner outwardly projecting members are completely enveloped by the carrier. The carrier is cured to form a mechanical lock between the outwardly projecting members and the carrier.

Abstract: A method of repairing an area of metallization that has lifted from a circuit board substrate uses a dry film epoxy placed between the lifted metallization and the substrate. Downward pressure and heat are simultaneously applied to the lifted area to rebond it to the substrate. Both metallization pads and traces may be repaired with the method, and the resulting bond may be stronger than that originally present. When heated, the dry film epoxy will melt and cure very quickly, requiring no further processing. The method is particularly useful when repairing circuit boards intended for microwave circuitry, in which conductive ribbons are gap welded to metallization pads. A metallization pad repair operation may be combined with a ribbon attachment operation, accomplishing both with one gap welding operation. The gap welder provides the downward force and heat necessary to bond the ribbon and repair the lifted pad.

Abstract: A coated film is peeled and removed on a resin product by rollers. Each roller has a different rotational speed and applies a shear slipping stress between the coated film and the resin material to peel the coated film from the resin material. The apparatus includes cooling device for cooling one of the rollers by feeding coolant through a passage formed in the roller so as to reduce adhering the coated film to the roller surface.

Abstract: A sheave liner for an elevator system sheave that supports a hoist rope with an elevator car suspended therefrom is replaced without having to remove the hoist ropes and without having to hang the elevator car by means other than the hoist ropes. The existing liner is cut and removed while the elevator car is suspended from the hoist ropes resting on the sheave. The new liner is rotated into its position and two ends of the liner are joined by either a mechanical bond or by a room temperature adhesive bond.

Abstract: The modular multizone heater system is for controllably heating areas of a structure, for example for bonded doubler reparation. The system comprises a number of heater cells to be placed in thermal contact with the areas to be heated of the structure. Each heater cell has a heating element and a temperature sensor. The heating elements of the heater cells are connected to a heater power supply to receive electric power. The heater power supply is controlled by a control unit receiving control data from a computer. The temperature sensors of the heater cells are connected to the control unit that relays the temperature data produced by the temperature sensors to the computer for monitoring, processing and control purposes.

Abstract: A hole-filling tool designed for compacting a material into holes in wood. The hole-filling tool includes a tube, a plunger, and operating means for aligning and operating the tube and plunger. The tube is thin-walled to allow the user to align the tool properly over the hole. The plunger slides within the tube and forces material therein into the hole to be filled. The hole-filling tool may include a handle and trigger for simplified use of the tool and a loader for packing a sawdust-adhesive-thinner filler material into the tube. The hole-filling tool may also include an automatic filler material feeder, such as an auger.

Abstract: A windshield repair apparatus includes a fixture for holding an injector wherein the fixture includes plastic legs for slideably engaging a windshield during sliding movement of the fixture. A suction cup mechanism enables selective mounting of the apparatus to the windshield. The suction cup mechanism selectively positions the suction cup so as to not interfere with sliding movement of the windshield repair apparatus across the windshield, and allows for deployment of the suction cup against the windshield at the desired time. The fixture has a engagement surfaces for the user's hand during handling of the windshield repair apparatus.

Abstract: For replacement of automotive windshields by aftermarket installers, two mirror image grips have a curved tubular handle which is welded to a sheet metal base with two legs which are at an obtuse angle to one another. The curved handle allows smooth repositioning of an installer's hands as the large windshield is shifted into position on the automobile, the obtuse angle base provides sufficient clearance for the full range of hand positions. Each leg of the sheet metal base is positioned to abut against an installer's hand during different stages of windshield lifting, i.e. when the windshield is vertical, and when it is inverted and horizontal. The grips are used to lift and position a windshield with a bead of urethane thereon into the pinch weld of the automobile.

Abstract: A configuration of surface-mounted circuit assembly has four layers, namely, an integrated circuit device, an adhesive layer, a solder layer and the carrier board. The integrated circuit device is attached to the solder layer which sets on top of the carrier board, with the adhesive layer between the integrated circuit device and the solder layer. The carrier board has at least one via located beneath where the integrated circuit is located. The via is filled with solder such that the solder layer at which the integrated circuit device is situated is thermo-conductively connected to the back side of the carrier board. This configuration allows the integrated circuit device to be easily removed from the carrier board by the application of heat to the back side of the carrier board.

Abstract: An adhesive-backed patch of reinforcement material has a central aperture and is applied to the pierced earlobe of a person's ear in position with the aperture aligned with the orifice of the earlobe to support the weight of the pierced earring installed in the orifice and distribute that weight to the tissue of the earlobe surrounding the orifice to which the patch is adhered. The patch may be used as a preventative measure to prevent damage to a person's earlobe as a result of wearing pierced earrings or may be used to reconstruct a torn or damaged orifice to regain usage of the earlobe.

Abstract: A direct chip attach to heatsink structure is shown and described which implements rework when the chip must be removed and replaced. A laminated heatsink includes a metal heatsink with a foil layer adhered to the chip attachment surface with the assembly secured to a carrier at a cutout opening therein that defines the chip attach site. The adhesive, either a dry film adhesive or a pressure sensitive adhesive, secures foil layer to heatsink and provides the interface of separation when a chip must be removed and replaced. By peeling the foil away from the heatsink, the foil, chip and non-reworkable die attach adhesive are removed as a unit, leaving no chip attach adhesive residue at the attachment site to be scraped or abraded away. The replacement chip can be installed either by directly installing with new die attach adhesive or by first restoring the foil layer prior to chip installation.

Abstract: An apparatus and method is disclosed using a graphite fiber blanket (20) of high thermal conductivity to repair an aircraft structure (10) made of composite fiber materials. The graphite fiber blanket (20) is placed in thermal contact with a silicone rubber heat blanket (22), with an internal heat source, and the aircraft structure, such as composite laminates (12, 14). Use of the graphite fiber blanket (20) increases the rate at which the temperature of the laminates can be elevated to the proper range for repair and transfers heat from hot spots to cold spots to ensure a uniform temperature throughout the laminates.

Abstract: A malleable sealing membrane is used to seal openings, regions or other apertures in a house or similar structures to prevent the entry of pests or other unwanted elements. The sealing membrane includes a mesh substrate having a sealing compound coated on one or more sides and embedded within interstices of the mesh substrate. One or more release backings cover the sealing compound to protect the sealing compound prior to the application of the sealing membrane. The sealing membrane is prefabricated for later use in sealing applications. In use, the sealing compound on one side of the mesh substrate is exposed, for example, by removing one of the release backings. The exposed sealing compound is applied against the structure along the opening, region or aperture. The second release backing can then be removed.

Abstract: A silicon die, such as an integrated circuit, is reworkably bonded to a copper heat spreader. The silicon-copper bond exhibits high compliance under conditions of thermal stress even though there is a significant thermal coefficient of expansion difference between silicon and copper. A compliant adhesive is applied to the surface of one of the silicon die and the copper heat spreader and is cured. Thereafter, a thermoplastic adhesive is applied to bond the silicon die to the copper heat spreader. A composite bond is thereby produced, including a highly compliant layer and a thermoplastic layer. The die may be reworked by heating the thermoplastic adhesive until the bond begins to soften and the die is released.

Abstract: A reclaimed joint sheet used as a gasket or packing member for automobiles, ships and the like consists of a first layer of a joint sheet made from a given composition, a second layer of a joint sheet made by mixing finely pulverized pieces of the joint sheet after the punching out of the joint sheet having a given particle size with the same composition for the formation of the joint sheet, and a third layer of the same joint sheet as the first layer.

Abstract: A structural member is reinforced by applying an adhesive material between a reinforcement surface of the structural member and an adhesion surface of a support plate, positioning a vacuum assembly adjacent to an exposed surface of said support plate so as to create an inner space between an exterior surface of said vacuum assembly and said reinforcement surface, and creating a partial vacuum in said inner space so as to force said vacuum assembly and said plate towards said reinforcement surface. A prefabricated vacuum assembly is a vacuum assembly comprising a flexible porous film, a flexible non-porous film, and a flexible sheet of breather material positioned between said porous film and said non-porous film.

Abstract: A method and apparatus for re-insulating underground steam pipe in situ includes the steps of creating at least one hole in the ground, inserting a liner into the hole, using a drill string to drill a hole in the conduit, inserting a tubing into the liner so that a first end of the tubing is positioned next to the pipe and a second end of the tubing is attached to a pumping system. The foam is then pumped through the tubing around the pipe and then the tubing is removed and the foam is allowed to cure and become rigid, thereby functioning as insulation.The plastic foam may be a polyisocyanurate or a urethane-modified polyisocyanurate.

Abstract: A two-component, heat reactive patch particularly useful for sealing gage and drain holes in automobile bodies which comprises an ionomer component and an olefinic/elastomeric component. The ionomer component contains an ionomeric copolymer of ethylene and an .alpha.,.beta.-ethylenically-unsaturated C.sub.3 -C.sub.8 carboxylic acid, a metallic coagent and a filler and, optionally, a non-ionomeric copolymer of ethylene. The olefinic/elastomeric component contains an uncrosslinked elastomer, a multifunctional acrylic monomer, and a free-radical curing agent.

Abstract: An apparatus for applying non-gravitational pressure to a surface includes a frame structure having a longitudinal axis, a pair of connecting members coupled to the frame structure along parallel axes normal to the longitudinal axis of the frame structure, vacuum fasteners coupled to the connecting members to secure the frame structure on an underlying surface, a vacuum pump mounted on the frame structure for activating the vacuum fasteners and a positive pressure pump mounted on the frame structure for inflating a collapsible diaphragm to apply pressure to the underlying surface. The apparatus is useful for applying doublers to aircraft repair localized damage.

Abstract: A resilient support member is provided for supporting a sidewalk, road surface, etc. The support member is formed of tire particles and a polyurethane binder. The tire particles have a size such that 100% of the particles will pass through a three inch sieve and about 95% of the particles will be retained on a half-inch sieve. The tire particles form about 80% to 95% by weight of the support member and the polyurethane forms about 5% to 20% by weight of the support member.

Abstract: A repair kit comprising fiber reinforced patching material impregnated with an ultra-violet light activated resin contained in a sealed package. In the preferred embodiment, the patching materials include a first piece of fiber reinforced material having randomly arranged fiber filaments or strands (i.e. a mat), and a second piece of fiber reinforced material having uniformly oriented fiber filaments (i.e. a cloth or roving). The impregnated first and second pieces of fiber reinforced material form a substantially inseparable, unitary patch when impregnated with the resin. The patch may also comprise a fiber reinforced mat and any variety of fiber reinforced cloth or roving attached thereto to form a single piece of fiber reinforced material such that the fiber filaments on one side of the patch are randomly arranged and the fiber filaments on the opposing side are uniformly oriented.

Abstract: A method and machine are disclosed for using a cold dry abrasion step for separating segments of discarded carpet into pile material (usually nylon) and backing layers (usually polypropylene) for recycling. A preferred method of abrasion uses dry ice pellets (made of frozen carbon dioxide) which are ejected at high speed from a set of nozzles that shoot the pellets directly into an abrasion zone, as a segment of discarded carpet on a conveyor system is being stripped apart and disassembled. The dry ice pellets "freeze" the binder material (usually latex) by lowering it to a temperature that makes the binder brittle and easy to break apart. The pellets also serve as abrasive agents, in a manner comparable to sand-blasting; however, unlike sandblasting or liquid (steam or chemical) systems, the dry ice pellets evaporate (sublimate) directly into gas without going through a liquid phase, and without leaving any liquid or gritty residue.

Abstract: A fire resistant patch for aircraft composite cargo bay liners. The patch includes a base member consisting of at least one inner sheet of woven fiberglass with outer layers of flame resistant plastic. A scrim consisting of a fiberglass lattice netting having a periphery larger than that of the base member includes a pressure sensitive adhesive on a bottom side thereof is also provided. A layer of resin containing a flame retardant additive is applied to the bottom side of the base member, and the base member is applied to the liner to cover the damaged area thereof. The resin layer is allowed to partially cure to retard movement of the base member. Strips of flame resistant tape may be affixed over the base member to hold it in place instead of the partial curing. The scrim is then placed over the base member and tape on the liner using the pressure sensitive adhesive. The scrim is placed such that the periphery thereof extends beyond the entire periphery of the base member.

Abstract: A method and apparatus is disclosed for lining a lateral pipe branching off of a main pipe with a flexible resin absorbent tubular lining portion having an integral sealing end which includes a flexible resin absorbent end collar portion and a preformed sealing collar having a body portion with an aperture and a rim. The body portion being located against a portion of the main pipe with the resin absorbent collar portion therebetween and the rim being located in a portion of the lateral pipe wherein the preformed sealing collar seals the region where the lateral pipe meets the main pipe.

Abstract: A liquid crystal display element utilizing flexible gas barrier films decreases poor display performance caused by bubble formation. This decrease is achieved by reducing the permeation of gas and water vapor from the gas barrier films into substrates by devising the structure of the element and the configuration in which the element is mounted. Specifically, edges of the substrates forming the liquid crystal display elements are sealed. Additionally, the gas and water vapor saturation solubilities of the liquid crystal material is controlled to improve resistance to bubble formation. The liquid crystal display elements can also be subjected to and/or stored in a reduced pressure. Electronic equipment incorporating liquid crystal display elements can include a guard plate having a minimum thickness and/or spacing from the display elements.

Abstract: Axially extending structures having internal forces directed radially outward therefrom may be reinforced by installing bands around the structures. The bands consist of a plurality of elastic convolutions of a composite material which assume a coiled configuration in a relaxed condition. The composite material includes a multiplicity of continuous, high tensile strength filaments encapsulated in a resin matrix and extending codirectionally with one another through the resin matrix. The band is installed around the structure by deflecting portions of the band to an uncoiled configuration and then wrapping these portions of the band around the structure. Adhesive may be used to secure the band tightly around the structure. Particularly useful applications for the composite bands are for reinforcing gas and liquid transmission pipelines and concrete bridge support columns.

Abstract: An apparatus for reinforcing an external surface of a stationary vertical column with a reinforcing material includes a supply of a reinforcing material and a guide that directs the reinforcing material from the supply onto the stationary vertical column. A winding device moves the guide means in a spiral pattern relative to the stationary vertical column, to wind spiral layers of the reinforcing material onto the vertical column. The winding device is provided as a multipart structure that may be assembled around the vertical column and later disassembled to permit removal from around the vertical column. In one approach, the reinforcing material is tows of a curable composite material that are wound onto the vertical column and later cured in place after the winding device is removed.

Abstract: A process for removing fluorocarbon resin-based coatings from a metal substratum, in which the coating is treated with a laser beam for progressively impinging on the whole coating surface until delamination of said coating from the substratum is achieved.

Abstract: The invention includes a device for separating a toner hopper from a mounting member so that the cartridge can be reliably resealed and refilled with toner for repeated use. A container holds the cartridge while leaving the outer edge of each of the spacers exposed. In one embodiment, the container is provided with wheels that travel in a track. The container moves linearly along the track past a blade that cuts through the outer edge of the spacers. In a second embodiment, the container is positioned on a rail aligned to pass between two spaced-apart blades. The rail is mounted on a linear bearing so that the rail moves linearly past the blades to cut through both of the outer edges of the spacers in a single pass. This allows the hopper to be separated from the mounting member. Finally, a vacuum system is provided for removing waste debris.

Abstract: A process for reconditioning a standardized tight head drum for re-use as either a tight-head drum or a wide-neck drum. The standardized tight head drum has an upper head drum welded to the drum body at a seam. This drum is reconditioned by separating the upper drum head from the drum along a cut line at a location below the seam. The cut edge is smoothed and sized and the interior of the drum is cleaned. For re-use as a tight head drum, an upper head having a fill plug and a vent plug is welded onto the cut edge of the drum. For re-use as a wide-neck drum, a neck ring is welded onto the cut edge and a wide-neck drum cover is placed on the neck ring. The reconditioned tight head and wide-neck drums have the same nominal volume and the same height and diameter dimensions as the tight head drum prior to reconditioning.

Abstract: A method for reusing loose, rejected or scrapped mats (1) of the type having a compact rubber-cloth backing (2) with a textile pile (3) incorporated therein, as well as a circumferential, pile-free backing edge portion (4, 4'), is disclosed. After optionally shaving off pile to produce the circumferential, pile-free backing edge portion, two such mats of essentially the same size, or one such mat and a pile-free rubber cloth of essentially the same size, are put together with the pile sides facing one another, or with the pile side facing the rubber cloth. Then, the edge portions (4, 4') are attached to one another throughout the entire circumference in an air-entrapping manner, whereby to obtain a mat especially suited for use on working sites or in industry.

Abstract: A bonded assembly which includes a heating element in thermal contact with the adhesive component of the bonded assembly, such that the heating element can serve to thermally degrade the adhesive so as to allow disassembly, repair and servicing of the bonded assembly. The invention is particular suited for use in an abradable shroud assembly used in the fan section of a turbomachine, such as a high bypass turbofan engine. The abradable shroud assembly includes an abradable material bonded to the fan casing with an adhesive material having a known thermal degradation temperature. Placed in thermal contact with the adhesive layer is a heating element, such that the heating element is capable of heating the adhesive to a temperature above its thermal degradation temperature.

Abstract: New wall to wall carpeting is applied directly over worn broadloom or tile wall to wall carpeting having a backing secured to a hard floor surface (e.g. directly attached, such as by adhesive, to an existing concrete floor) and a top pile surface. The worn carpeting is cleaned and then a high molecular weight acrylic ester polymer emulsion adhesive is sprayed onto the top pile surface of the old carpet. The vinyl backing of one or more new carpet strips is applied directly to the adhesive. A fire retardant is preferably included with the adhesive or separately applied to the top pile surface of the old carpet. If desired the adhesive may be applied to only a small part of the old carpet for holding strips of hook fasteners, and the new carpet backing may include loop fasteners which cooperate with the hook fasteners and hold the new carpet in place.

Abstract: An apparatus and method are provided for delaminating the top printed layer from a three layer paper label adhesively bonded to a semi-rigid plastic or metal container. An underlying pulp layer of the three layer paper is selectively removed leaving only a smooth adhesive layer of the paper label and thereby providing a smooth unprinted surface for relabeling. An apparatus and method are also provided for simultaneously delaminating both the top printed layer and the bottom adhesive layer of a two layer label bonded to a semi-rigid container.

Abstract: An increased efficiency method and apparatus for lining a section of pipe with a cement mortar. After a wet cement mortar has been applied to a cleaned interior surface of a pipe, carbon dioxide is introduced into the freshly lined section of the pipe in such quantity that a crust of calcium carbonate will be formed on the interior surface of the wet cement mortar lining as the carbon dioxide reacts with calcium compounds of the wet cement mortar in a relatively short period of time. This crust is provided to protect the underlying mortar from scouring, while tolerating a low-velocity flow of water, until the normal hardening of the underlying mortar through hydration can take place so as to substantially reduce the out-of-service time of the section of pipe which is being lined.

Abstract: A patch is provided for repairing articles such as bicycle tire inner tubes. The patch includes a backing; and a pressure sensitive adhesive layer having an average thickness of greater than about 0.076 mm disposed on the backing. The patch has a maximum thickness of no greater than about 0.64 mm, a T-Peel strength from an organic polymeric substrate of greater than about 0.18 kN/m after 1 hour dwell time at 22.degree. C., and a static shear strength of at least about 50 minutes from stainless steel at 70.degree. C. with a 7.6 kPa load.

Abstract: A method of recycling an image-deposited recording material having a surface portion which swells in contact with water and bears thereon deposited images containing an image-constituting material, include the steps of: (a) applying a water-containing image removal promoting liquid to the image-deposited surface portion of the recording material, (b) bringing an image release member into contact with the image-deposited surface portion of the recording material to transfer the images to the image release member to remove the images from the image-deposited recording material, and (c) applying heat to the image-deposited recording material at least after the step (a), with substantially retaining the water component of the image removal promoting liquid in the image-deposited surface portion.

Abstract: A windshield repair device including a base, several sucking disks connected with the base by several connecting rods, a pressurizing tank, a rotary bar and a plug block. The base is formed with a central axial thread hole and the pressurizing tank has a thread rod at one end for screwing into the thread hole of the base. The pressurizing tank further has an inner thread at a central section for engaging with an outer thread of the rotary bar. The plug block is plugged into a central hole of a bottom end of the pressurizing tank. When a repair liquid is filled into the pressurizing tank, the rotary bar is twisted downward in the pressurizing tank and a bottom end of the rotary bar is extended into a central hole of the plug block to compress the air therein, whereby the pressure of the air forces the repair liquid to evenly flow into every corners of the fissure.

Abstract: A method for repairing a crack in a windshield wherein the windshield has an outer glass member and an inner-glass member, and wherein the crack is disposed within either the outer glass member or the inner glass member. The method includes the steps of (a) applying pressure to either the outside glass member or the inside glass member, depending in which glass member the crack is disposed, to expand the width of the crack; (b) depositing a repair material at predetermined positions within the crack to allow the deposited material to flow within and fill the crack by capillary action; and (c) creating an anaerobic activity upon said crack.

Abstract: Leaks can be sealed quickly by methods employing a flexible patch applied by a resilient applicator that can be caused to exert suffieient force against the patch and the leaking surface to stop fluid flow while a leak sealant is curing.

Abstract: A composition of matter and a process for the preparation thereof is disclosed for a fibrous composite (e.g., synthetic wood). The fibrous composite contains 50 to 95% by weight carpet and 5 to 50% by weight of a structural adhesive. Structural adhesives effective in this application would include phenol-formaldehyde resins, either of the resole or novalac type, phenol-formaldehyde resins that have at least one other co-monomer present, e.g., bis-phenol A, resorcinol, and other substituted phenols, urea-formaldehyde resins, melamine urea formaldehyde resins, tannin-phenol-formaldehyde resins, diisocyanate resin, epoxy resins, crosslinkable polyvinyl acetate, proteins, e.g., soy flour, blood and polyester resins.

Abstract: A means and method of enhancing the damage tolerance of adhesive bonds by introducing gaps in the adhesive to divide the adhesive layer into discrete regions. The gaps are created by placing strips of barrier material between the two adherends before the adhesive is put in place and cured. If the two adherends begin to debond along the interface between one of the adherends and the adhesive, the gap arrests the debonding process.

Abstract: An improved multi-layer repair patch is provided. The patch has general repair applications including uses on drywall and automobile bodies. The preferred embodiment includes a three layer patch including an inner mesh, a middle reinforcing sheet and an outer mesh. No glue or adhesive needs to be applied to the middle sheet. The inner surface of the inner mesh carries an adhesive coating and the inner surface of the outer mesh carries an adhesive coating. The inner mesh is attached to the surface under repair and the outer mesh secures the middle sheet between the two mesh structures. In the preferred embodiment, the middle sheet is perforated and the perforated middle sheet, in combination with the inner and outer mesh structures enables liquified bonding material to migrate through the patch during the repair process.