Abstract: A method for fabricating an automotive trim which is mounted with an ornamental member, in which an ornamental member which is not molded by any preliminary forming process is secured on a surface of a door trim main body with a bonding die set so as to closely follow a complicated surface profile of the door trim main body, extraneous parts of this ornamental member is cut by a thermal cutting blade attached to the bonding lower die, and the peripheral edge of the ornamental member is finished by a pressure bar.

Abstract: A plastic tube is cut into two sections which are sealed closed by a sterile method wherein the tube is loaded into two clamping jaws which flatten the tube. The tube is cut through the flattened section and the cut ends are heated to their molten state. A wafer having wings is located between the cut ends with the wings penetrating the lumens to create an internal plug as the wings force the molten material inwardly. The plugs add to the strength of the resultant seal. If desired, the molten ends are pressed into a cavity which is cooled to a temperature below the molten temperature to seal the ends. The tubes are then removed from the cavity. When it is desired to connect individual tube sections the two tube sections are placed in clamp members in axial alignment slightly spaced from each other. The ends of the tube sections are melted by a melt/wipe process and the tube sections are then pressed into contact with each other to be welded into an integral tube.

Abstract: Each separator frame constitutes a single part. It is made by assembling two thermoplastic films having the shape of the seal plane and sandwiched over two different types of thermoplastic expanded structure, e.g. polyethylene grids, a first one of these structures being designed to occupy the central opening of the frame and the second type of structure being designed to occupy the diffusers. According to the invention, and prior to assembly, the first expanded structure is crushed by hot compression over its entire area apart from the central opening. This crushing reduces the thickness of the expanded structure, preferably by more than 50%. Cut-outs are formed in the first structure after it has been compressed in this way and cut-out pieces of the second expanded structure are placed therein, which pieces are themselves crushed in side strips for the purpose of retaining them in the assembly.

Abstract: A method of depositing a layer of doped or undoped wide band gap oxide material by chemical spray pyrolysis, upon a continuously advancing, elongated web of substrate material in a continuous, roll-to-roll process.

Abstract: According to the invention, calibrated rings are obtained by superficially vulcanizing extruded or profiled extrudate at the exit of an extrusion head (T), then by cutting this vulcanized extrudate into portions by means of a conical cutting device (C), subsequently by butting the two ends, in the respective form of a conical tip and a funnel, of each portion (t) together under hot conditions and under a controlled pressure, in order to obtain a ring blank which is then engaged between the half-cavities of a mold (Mo), where it undergoes shaping and vulcanization by the heating of the latter and thereafter deburring as a result of a shearing action produced by a push device (D) causing the half-cavities to slide in the closed position in the frame of the mold, before causing the opening of the latter by means of a device (G) and the release of the calibrated and superficially clean ring obtained.

Abstract: A length of tape is drawn off a reel, passed over the cutting/connecting section of a splicer, passed through a temporary storage vessel and looped back so as to pass over the cutting/connecting section again. Tape clamps hold the two layers of tape on the cutting/connecting section which are then cut. One of the tape clamps is withdrawn while an applicator applies a piece of adhesive tape in a manner which splices a continuous loop of tape. To remove a superfluous portion of the tape from the continuous loop, the loop is moved to a position wherein one end of the superfluous length is located over the cutting/connecting section. The tape is clamped and cut. One of the two tape clamps then lifts the now open end of the loop clear and the superfluous portion is spliced to the tape on a supply reel. The reel is rotated in manner which winds the superfluous length thereonto until the other end of the superfluous length is drawn to the cutting/connecting section.

Abstract: A device and method for producing a tapered scarf joint between two composites includes a cutting guide for cutting plies to incrementally variable lengths. The joint is produced on a filament winding machine having a mandrel and a winding eye for delivering tacky prepreg filament bands. A first helical ply is wound around the mandrel. Next, a cutting guide edge is positioned over the first ply an incremental distance inward from the ply end. As the next helical ply is wound, the filaments are cut at the cutting guide edge. The cut filament ends are pressed against the first ply. The process is repeated N times. The cutting guide is then removed from the mandrel, and a final ply is wound over the entire length of the composite. Similarly, the same cutting guide is then used to produce an outwardly tapered composite end. Only this time the cutting guide edge is positioned incrementally outward along a tapered wedge attached to one end of the mandrel.

Abstract: A cutting/connection device of a tape splicer includes a fixed base member and a vertically displaceable member. The end portions of tapes to be spliced are overlaid one on top of the other on the device. A cutter severes the tapes so that the movable member can be vertically displaced in a manner which brings the free ends of the two tapes to the same level. Under these conditions a strip of adhesive tape is applied to splice the tapes together.

Abstract: A method of fabricating a semiconductor device having a buttable edge from a first wafer having first and second opposite planar surfaces and a second wafer having first and second opposite planar surfaces is disclosed. A first component is formed on the first planar surface of the first wafer. A precision dice cut is placed in the first planar surface of the first wafer closely adjacent to the first component. The precision dice cut extends partially through the first surface of the first wafer and defines the buttable edge. The first surface of the first wafer is bonded to the first surface of the second wafer, the first surface of the second wafer containing a second component and being aligned with and bonded to the first wafer so that the first and second components cooperate to form the semiconductor device. Portions of the first and second wafers surrounding the first and second components, respectively, are then removed to define the semiconductor device.

Abstract: Plastic tubes are welded together by placing each tube in a nest which includes a pair of grooves and an anvil centrally located between the grooves. Each tube is positioned in the grooves around the anvil for being juxtaposed the other tube. A wafer of movably mounted to move to the gap between the anvils so as to heat the ends of the tubes and melt the tubes without actually cutting through the tubes. The melted ends are then joined together so that the two tubes are thereby connected with one section of each tube being in flow communication with a corresponding section of the other tube.

Abstract: A length of tape is drawn off a reel, passed over the cutting/connecting section of a splicer, passed through a temporary storage vessel and looped back so as to pass over the cutting/connecting section again. The free end is connected to a take up reel. Tape clamps bring the overlapping layers of tape down onto the cutting/connecting section and are then cut. One of the tape clamps is withdrawn while an applicator applies a piece of adheseive tape in a manner which splices a continuous loop of tape.

Abstract: An improved method for producing a multi-colored emblem which may be bonded to a fabric is disclosed which provides an emblem with an embroidered appearance. The emblem is easily heat sealable onto difficult to adhere fabrics. The method generally involves providing a first woven material blank, providing a barrier layer of thermoplastic material, laminating the barrier layer onto one side of said material blank to form an assembly, cutting said assembly to a specific configuration, sewing a thread about the periphery of the cut assembly, and laminating said assembly onto a second woven material blank having a different color. This second assembly is again cut to a complimentary larger configuration and also provided with a thread about the periphery. The two material blanks are then heat sealed together and an adhesive layer is provided to the exposed barrier layer.

Abstract: A device and method for producing a finished wood material beam assembly and, in particular, a finished prestressed wood material beam assembly. The device includes a support having a top that has movable chord and web adjusters carried thereon. The adjusters may be selectively moved and adjusted as desired both horizontally and vertically, so that the chords and web of the assembly may be received thereon at selected desired heights. As such, the adjusters may be selectively adjusted to precisely conform to the specific size and dimensions of the chords and the web being supported thereby. Securing cylinders and stops carried by the table are also adjustable to securely hold the assembly in place. A prestressing cylinder and prestressing stop carried by the table are also adjustable to prestress a portion of the assembly disposed therebetween. Mechanical and adhesive fasteners are applied to the portions of the assembly by respective devices.

Abstract: A joint assembly forming part of a gridwork of channel sections used as decorative partitions in various types of wall construction, the joint assembly including abutting, mitered channel sections, adhesive tape backing, and adhesive glue for bonding the abutting channel sections together and, additionally, a method of assembling said joint assemblies using adhesive tape backing and adhesive glue for bonding the sections together.

Abstract: Veneer edge treatment method and apparatus are described. The apparatus includes plural work stations distributed along the length of elongate conveyor means for transporting the veneer sheets as a series into and out of the work stations, with each work station having means for working on at least one of opposed terminal edges of a veneer sheet occupying the station. Selectively controllable scarfing, glue-applying and bonding work stations are provided, and the selectively controllable conveyor sections extending thereinto, therebetween and therefrom are vacuum-assisted to maintain alignment of the veneer sheets transported thereby. Sensing means and control means measure the distances between the opposed terminal edges of successive veneer sheets and determine their lengths, permitting the apparatus to handle veneer sheets or different lengths.

Abstract: This invention relates to a process of preparing a novel form of laminated-veneer-lumber. More particularly, this invention pertains to a process of producing a laminated-veneer-lumber which is composed of compactly arranged veneer sheets which have sinusoidal edges. A method of joining sheets of veneer in a layup, useful for continuous production of laminated veneer-lumber, comprising dispensing the stress concentration of the joints over an extended area of the joint by using veneer sheets that have opposite edges cut in a sinusoidal pattern.

Abstract: A laterally projecting flange (18) is formed on the upper portion of an edge of a flat section (12) of foam core material. The inner surface of the flange (18) and the adjacent lower edge surface of the foam section (12) are positioned adjacent to the upper surface and flat edge surface of a honeycomb core section (14). Hot melt adhesive is applied to hold the sections (12, 14) in this abutting position. The abutting sections (12, 14) are assembled together with upper and lower skins (24, 26) of fiber reinforced resin/matrix composite material prepreg fabric or tape. The assembly of core sections (12, 14) and skins (24, 26) is positioned in compression molding apparatus and subjected to a crushed core compression molding procedure. During the molding, a bend (32) is formed in the panel assembly substantially along the abutting edges of the core sections (12, 14). The flange (18) is positioned on the outer radius of the bend (32).

Abstract: The invention is a method of molding an article from a layed up preform having an optical fiber embedded therein, the optical fiber having at least one end for coupling to an external optical fiber. The method comprising the steps of: providing the optical fiber; providing a hollow tubular sleeve having first and second ends; inserting the at least one end of the optical fiber into the first end of said sleeve such that it extends through a portion thereof forming an optical fiber assembly; providing a mold; laying up the preform in the mold; embedding the optical fiber assembly into the preform simultaneously with the step of laying up the preform; molding the preform to form the article; and removing the molded articel from the mold.

Abstract: The shell of a hearing aid has an open end with a mating surface. The mating surface mates with a non-planar faceplate. Advantageously, the faceplate is shaped as a part of a sphere. Further advantageously, the surface is shaped by grinding.

Abstract: A complete production line assembly of a wooden I-beam manufacturing apparatus is disclosed, wherein generally identical chord members are simultaneously formed by cutting of a wooden stock material into the chord members and simultaneously providing grooves in one surface of each chord into which web members are received to form the I-beam. The individual web members are conveyed as stacks into a web infeed hopper where the individual web members are sequentially discharged from the hopper into a chords and webs assembly line. The web transfer mechanism for conveying the webs to the hopper is fully automated. The individual web members are conveyed along the assembly line between the grooved chords and the chords are converged so that the grooves interfit with the web edges to form the I-beam. The chords and webs assembly line is adjustable by virture of mounting guide rollers on at least one adjustable side frame to enable the line to manufacture wooden I-beams of varying depth.

Abstract: A device for applying glue to the cut leading end of a veneer sheet which is applicable to use in a veneer jointing apparatus is disclosed herein. The device has hold-down means for holding the veneer sheet adjacent its cut leading end against a support surface on which a glue deposit is formed previously along a line across the veneer feeding direction, so that the end is straightened against said support surface at least while the glue is picked up by the cut surface on the moving leading end. It is so controlled that said holding means is shifted to its holding position before the cut leading end of the veneer sheet reaches the glue deposit and also that it is shifted away from the holding position only after the glue has been picked up by the cut leading end.

Abstract: A complete production line of a wood I-beam manufacturing apparatus and the method of manufacture is disclosed wherein generally identical chord members are simultaneously formed by cutting of a wooden stock material into the chord members and simultaneously providing grooves in one surface of each chord into which web members are received to form the I-beam. The individual web members are conveyed along a chords and webs assembly line between the grooved chords and the chords are converged so that the grooves interfit with the web edges to form the I-beam. The web longitudinal edges are preferably beveled in an off-line beveling operation. The beveled webs are stacked for feeding into the chords and webs assembly line. Prior thereto, first and second glue layers are applied to one transverse edge of each stacked web member. The web members are subsequently conveyed in the assembly line in end-to-end abutting relationship.

Abstract: A method of constructing a blood flow conduit provided with external inflatable balloons and having rigid end portions for facilitating insertion into blood vessels and means for detecting pulsatile flow in the conduit and excessive pressure in the balloons.

Abstract: A spirally wound filter cartridge and a method of making the same in which the cartridge includes an elongated, centrally disposed tube or mandrel, and a sheet of filtration material spirally wound around the tube such that the cartridge has a tapered configuration with a first end of the cartridge being greater in diameter than the second end. The present invention also relates to a filtration device having a filter cartridge housing adapted to receive the above mentioned tapered filter cartridge.

Abstract: Of two edges (14, 16) to be joined together of a multilayer foil, the inner edge (16) is obliquely trimmed in the longitudinal direction prior to the pressing together in such a way that the layer (6) located remote from the surfaces (10, 12) to be pressed together protrudes beyond the other layers. If the two layers (14, 16) are pressed together during the welding operation by means of two tool elements, not shown, then the inner layer (6) of the inner edge (16) overflows so as to form one uninterrupted layer with the inner layer (6) of the outer edge (14). When the foil is used as packaging material, in particular as a tubular liner for a packaging tube, it is assured that the product to be packaged will come into contact only with the inner layer (6), so that an undesirable reaction with one of the other layers is avoided.

Abstract: A method of joining the edges of flexographic printing plates on printing cylinders, which includes the following steps:(i) fixing the printing plates to make-ready cylinders by means of a first double-sided self-adhesive film having the same area as the printing plate,(ii) cutting the printing plates to size so that they fit the printing cylinders,(iii) removing the cut printing plates from the make-ready cylinders and from the first self-adhesive films,(iv) fixing the cut printing plates by means of a second double-sided self-adhesive film, which has the same area as the printing plates and from 1.6 to 2.

Abstract: A composite panel molded between a male stamping part and a female stamping part, and comprising a layer of mineral fibers having on selected zones particularly edges which are of three times the density which is normal in the panel, a surfacing layer destroyed under the action of the heat released by a knife above the said selected zones and a surfacing layer which covers the said slected zones, and a process for making the same are disclosed.The composite panel is used particularly as an inner trim for a motor vehicle.

Abstract: Gloves and other articles are manufactured from a pair of thermoplastic sheets which are drawn along a process line in adjacent, facing relation. A portion of one of the sheets is pushed outwardly to form an outwardly projecting loop, and a thumb-shaped line is formed between adjacent sides of the loop. The loop and adjacent portions of the thermoplastic sheets are then advanced to a finger and hand-forming station, where a thermobonded line of the shape of fingers and hand is formed between the thermoplastic sheets in registry with the thumb-shaped line, while retaining an open wrist portion. One may then cut away the resulting glove at the wrist portion.

Abstract: A method of fabricating polymer-coated, fabric corner members for the integrated enclosures provided for projecting products such as air conditioners on unitary roof membranes. The corners have vertical walls forming a corner, comprising forming a first generally rectangular membrane segment with a side split part way, forming a second segment with a triangular-shaped corner portion, spreading the split edges of the first segment with an elongate male die part, placing the second segment over the male die part, and utilizing an elongate female die part having flat welding edges to retain the marginal edges of the second segment in engagement with the edges of the first segment contiguous to the split, and applying energy to heat-weld the lapped edges of the first and second segments.

Abstract: A long alumina ceramic tube having good linearity is made by longitudinally joining shorter alumina tubes at the ends thereof. The ends have tapered surfaces thereat to increase the contact surface of the joint. The contact surface has a thin coating of an alumina containing composition thereon which is fired at a high temperature to provide a secure joint between the shorter alumina tubes.

Abstract: A long alumina ceramic tube having good linearity is made by longitudinally joining shorter alumina tubes at the ends thereof. The ends have tapered surfaces thereat to increase the contact surface of the joint. The contact surface has a thin coating of a alumina containing composition thereon which is fired at a high temperature to provide a secure joint between the shorter alumina tubes.

Abstract: A book-like storage container for cassettes or the like is formed from a single thermoplastic sheet of PVC plastic which has a pair of stackable trays formed on an inner face thereof that are connected together by an integral spine in side-by-side relation. Each tray is defined by C-shaped walls and the spine has flanges adjacent each end thereof for interlocking with the interfitting walls of the trays when the holder is in a closed position to form an enclosure therein. The PVC sheet has a living hinge defined therein along the connecting edges of the spine and each of its respective trays. In a preferred embodiment, a second thermoplastic sheet of flexible vinyl is placed back-to-back with the PVC sheet and thermally bound thereto about the sheets' peripheries. The PVC sheet is notched at the intersection of each living hinge and the periphery of the PVC sheet, so that when the peripheries of the PVC sheet and vinyl sheet are thermally bound together, there is no thermal seam at those notches.

Abstract: The invention provides a method for developing a point on one end of a vehicle molding which is initially fabricated as an extruded member of a resinous material of a first color with a uniform transverse cross-section. A longitudinal extending layer of a second color is adhered to a portion of the exterior surface leaving a second longitudinal portion of the exterior surface of the first color. The pointed end is provided by first cutting a wedge shaped section out of one end of the molding, pressing the ends of the molding together in an injection mold and then reforming the end of the molding in the desired pointed configuration by the injection of liquid resinous material into the mold.

Abstract: A lightweight building structure and method of fabrication is provided which is especially adapted for use in airline galleys or other interior vehicular constructions. It includes fireproof sandwich/core panels interconnected by plastic adhesive in a novel manner. The method of fabrication includes construction of the assembly in a clean environment, including forming and mating components in the panels, cleaning and deburring the components, adhesively interconnecting the panels prior to further cleaning prior to painting. The assembly is constructed in a manner to insure a completely smooth and continuous surface which enables ease of cleaning while preventing accumulation of dust and dirt.

Abstract: A tile of synthetic material which simulates a hard surface is provided. The tile includes tapered peripheral edges which define rounded upper edges of the tile. The tile includes a core part which has two layers of substantially-inextensible, flexible, synthetic material between which is interposed an intermediate separating layer. A facing sheet simulating a hard surface tile is provided on the upper face of the tile. The facing sheet is applied to the core part and has rounded marginal portions which extend to cover marginal portions of the core part and define the rounded upper edges of the tile. The marginal portions of the facing sheet cover less than the total thickness of the core part.

Abstract: Thermoplastic tubes are welded together in a dry condition with the tubes being open and maintained in their undistorted condition during the welding step. In an alternative technique a branch tube is welded to a main tube by placing the tubes in a non-parallel orientation in a holding device. A wafer cuts completely through one tube to form two tube sections. The wafer also cuts a notch from the other tube. One of the tube sections is shifted to become aligned with the notched other tube and welded thereto. A further technique includes placing at least one tube in a holding device which has a false floor for pressing against an area of the tube while the tube is being flattened at two spaced locations on opposite sides of the area. When the false floor is moved away from the tube a partial vacuum results. An air pocket is formed when the tube is severed by a wafer by air flowing into the cut tube.

Abstract: A process is described for cementing together the edges of photopolymerizable flexographic printing elements for printing plates that contain as an elastomeric binder a block copolymer whose polymer blocks are polystyrene and polyisoprene and/or polybutadiene or their copolymers.

Abstract: In the manufacture of welded corner joints between hollow plastic sections shaped parts are used which abut against the plastic sections during the heating-up operation and also during the welding process. In this way the result is achieved that the weld bead or plastic rim which forms during the welding, is pressed into the hollow cavity (19) or into the hollow cavities so that a subsequent operation for the purpose of removing the weld bead is not necessary.

Abstract: One edge face of each stack of overlapping paper sheets in a series of moving stacks is trimmed and simultaneously roughened by a driven circular knife before the thus trimmed and roughened edge faces are coated with adhesive paste in a step which immediately follows the combined trimming and roughening operation. The edge faces are roughened by teeth which form the cutting edge of the circular knife and/or by particles of hard metal and/or boron nitride on that major surface of the knife which confronts the edge face of the stack at the combined trimming and roughening station.

Abstract: An apparatus for splicing film together is provided. The apparatus includes a first jaw and a second jaw, the jaws cooperating to clamp two film ends together. A heat sealer for sealing the two film ends together is located in the first jaw. A rotatable block is located in a second jaw. The rotatable block is rotatable to a cutting position and a sealing position. In the cutting position, a side of the rotatable block having a slot faces upwardly and contacts the film. In the sealing position a side of the rotatable block having a back up member faces upwardly and contacts the film. When the film is clamped between the jaws and the rotatable block and is in the cutting position, a portion of the block, and accordingly the film, extends outwardly from a horizontal plane defined between the jaws. Therefore, after the film is cut along the slot in the block and the block is rotated to the sealing position, the severed ends of the film overlap. A method of splicing film is also provided.

Abstract: A hollow, flexible, bendable, cylindrical-shaped, hat-like sleeve is water-tightly joined with the upper end of the riser section of a manhole structure. The free end of the sleeve is trimmed so that its upper edge fits beneath the shoulder of the frame supporting the manhole cover to prevent subsurface water from entering into the manhole interior through the regions between the manhole cover supporting frame and the top of the riser section, which is usually fitted with adjustment rings to bring the manhole cover frame up to grade. The sleeve is easily cut to any height to accommodate either a greater or lesser number of height adjustment rings. The sleeve flange is cast into the riser section. The sleeve may be folded into itself to significantly lower its profile to expedite handling, transportation and assembly. A plastic clamping band may be placed into the interior of the sleeve to water-tightly join the upper end of the sleeve to the manhole cover support frame.

Abstract: A complete production line of a wood I-beam manufacturing apparatus and the method of manufacture is disclosed wherein generally identical chord members are simultaneously formed by cutting of a wooden stock material into the chord members and simultaneously providing grooves in one surface of each chord into which web members are received to form the I-beam. The individual web members are conveyed along a chords and webs assembly line between the grooved chords and the chords are converged so that the grooves interfit with the web edges to form the I-beam. The web longitudinal edges are preferably beveled in an off-line beveling operation. The beveled webs are stacked for feeding into the chords and webs assembly line. Prior thereto, first and second glue layers are applied to one transverse edge of each stacked web member. The web members are subsequently conveyed in the assembly line in end-to-end abutting relationship.

Abstract: A flexible cable assembly for actuation of an automobile speedometer or the like, comprising an inner core member and a tubular casing that includes an outer housing and a spiral-cut tubular liner with multiple internal ribs. The liner is constructed by extruding a cylindrial tube with at least one internal longitudinally extending rib. The tube is then cut helically so as to offset circumferentially the rib segments on adjacent turns of the strip, providing multiple internal supports for the core member.

Abstract: A large surface to be lined with a covering cut precisely to size, e.g. a wall of a room or building to be paneled or papered, is marked with strips of adhesive measuring tape posted thereon along orthogonally intersecting lines to divide its area into zones whose dimensions can be accurately read thereon. The strips may be left in position when the covering is applied and, advantageously, have centerlines determining the boundaries of adjoining zones, the covering being divided into sections abutting one another along these boundaries.

Abstract: Proposed is a furniture front element like a cabinet door, of which the frame leg members are joined in mitre cut and without any screwed connection. The lengths of the leg members are infinitely adjustable and the frame filling pieces are designed as a storage means in order to be able to change the front surface of the element to the desired extent.

Abstract: A structural body is composed of a number of sections which are placed on one another and joined together. According to the invention, the sections, which consist of urethane foam or like plastic material, are provided, at least on one side and preferably on both sides, with a thin metal sheeting, and that the various sections are so shaped that their joining faces are congruent.The superposed sections, the joining faces of which are congruent, are cut out of sheets by means of a preferably computer-controlled laser.

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: The present invention defines methods of forming a non-skid surface on a base member, wherein the base member may consist of a wood, plastic, metal or concrete surface structure. One method includes applying one or more coats or layers of epoxy resin to one surface of a wood base member. After the epoxy resin is set, a first coat of polyurethane is applied thereover at a thickness determined by the size of the grit material that is disseminated in the first coat of polyurethane, whereby the upper portion of the grit is exposed so as to be covered by a second polyurethane coat applied over the first coat of polyurethane, the grit being locked within and between the two coats of polyurethane. An additional method includes the step of affixing a fiber/cement panel to the base member and applying the first polyurethane coat to the surface of the fiber/cement panel, followed thereafter by the grit and the second coat of polyurethane, whereby a non-skid surface is established thereon.

Abstract: A method of making sign component pieces to be interfitted in close abutting relationship. The preferred method aspect of the invention involves imprinting upon one or more flexible rectangular translucent cover sheets successive horizontal bands of repeated sign-forming indicia, the indicia being precisely positioned with respect to two intersecting reference margins of the sheet. The cover sheets are then laminated to a thin flexible backing sheet capable of adhering subsequent to be severed component sign pieces to a component piece support surface. The resulting laminated sheet is then applied to individual cutting devices, each having an adjustable backstop positioned to effect a linear cutting operation spaced a distance therefrom equal to the horizontal or vertical extent of the component piece involved.

Abstract: A method of joining plastic pipes by welding, whereby juxtaposed ends of the plastic pipes welded together along a peripheral annular welding zone presenting a discontinuous meeting area between continuous or uniform welding zone portions as extending to both sides of said meeting area.