Abstract: A sealing profile formed of rubber or rubber-like material is provided for sealing tunnel segments which have circumferential recesses. There is a plurality of slotted grooves running parallel in the lengthwise direction on the base side of the profile and a plurality of channels running parallel in the lengthwise direction, the number of channels being no greater than the number of slotted grooves and at least one channel being in alignment with a corresponding groove.

Abstract: The method for making an energy absorbing panel comprises the steps of coating a stretchable lightweight fabric with resin, molding the resin coated fabric into a generally planar sheet having a plurality of spaced apart conical projections rising from the planar sheet, cutting the fabric to provide molded panels in a size and shape of the desired energy absorbing panel structure, cutting adhesive coated planar sheet material in a size and shape of the desired energy absorbing panel structure to provide interface panels, interleaving the molded panels and the adhesive coated interface panels to the desired thickness of the energy absorbing panel structure, and then curing the adhesive to attach the panels and thereby form the energy absorbing structure. Upon the imposition of a force against the energy absorbing structures, the resin rigidified projections collapse to absorb energy.

Abstract: A panel having high strength relative to its weight is made of rigid material and is formed with a plurality of open cells, each open at one side, and with a plurality of closed cells, each closed on all sides. Each of the open cells is surrounded on all its sides by a plurality of the closed cells, and each of the closed cells is surrounded on all its sides by a plurality of the open cells.

Abstract: An apparatus for allying and dispensing a masking paper wound in a roll form includes a housing accommodating the masking paper, a group of rolls for taking the masking paper out of the housing and a cutter blade for cutting the masking paper. The masking paper is a relatively thin synthetic resin film folded in a plurality of parallel pleats and a relatively thick tape disposed along a longitudinal margin of the film and having a pressure sensitive adhesive layer formed on the opposite sides thereof.

Abstract: A film made from a weldable polymer material with projections. The projections are formed by particles which are applied, in particular sprayed, in the molten state onto the film surface. The welding factor is preferably significantly below 1.

Abstract: A breathable, laminate fabric which is impervious to water, aqueous solutions and organic solvents comprising a base layer formed from a porous, absorbent material which is bonded at spaced points to a second layer comprised of a series of parallel strips, impervous to water, aqueous solutions and organic liquids, said straips being disposed transversely to the edges of said underlying base layer, said strips having leading and trailing edges, and extending longitudually along said base layer in an overlapping manner such that the leading edge of one strip overlaps the trailing edge of the next succeeding strip in the series, said base layer or said second layer being comprised of a thermoplastic material.

Abstract: A tubing plank is fabricated from foamed tubular members positioned parallel to and adjacent each other, the members having substantially coplanar longitudinal axes, and each member secured to each adjacent member along adjacent sidewalls to form a planar member. A sheet member may be applied to at least one face of the tubing plank, each sheet member forming a contact area. In another embodiment, tubular members are positioned parallel to and spaced apart from each other, adhered to at least one sheet member. A second sheet member may be adhered to the opposite face of the tubes from first sheet.

Abstract: Lightning protection apparatus for an exterior structural surface includes an electrically insulating protective coating adhered to the exterior surface, and a plurality of conductive particles supported in the coating. The particles are spaced at distances greater than the dimension of the particles in a direction parallel to the surface. The dielectric strength of the coating is thereby weakened by bridging the thickness of the coating with the particles. This enables lightning attachment to occur at a multiplicity of points rather than at one point, thereby reducing interior sparking in an aircraft and minimizing structual damage to the surface of the aircraft.

Abstract: An elongate continuous plastic fastener strip having a profile for interlocking engagement with another profile and having a web for attachment to a film with a member coextensive with the strip and attached thereto which prevents longitudinal stretching of the strip when a longitudinal force is applied thereto particularly concurrent with the application of heat to attach the strip to a plastic film. The member preventing extensibility is attached such as by coextrusion with the strip, by sandwiching between layers in the web or by attachment in the form of filaments to the web.

Abstract: A forming tool for the production of sheets, more particularly from a thermoplastic synthetic material, is in the form of a roller, a press, or a casting mould, and comprises, upon its outer surface, engraving elements in predetermined spatial relationship with each other. It is to be possible to produce sheets inexpensively with this apparatus, and production tolerances are low. The engraving elements provided upon the outer surface, which is made of hard material, more particularly metal. The engraving elements project, above the outer surface, to a predetermined height, and the remainder of the outer surface exhibits a predetermined surface structure.

Abstract: Wedge spacers for forming slab gels of increasing cross section are manufactured from strips of thermoplastic material by impressing corrugations into the strips which run lengthwise from one end of each strip to a point along the strip between the two ends. The corrugations decrease in depth from a maximum at the strip end down to flatness at their terminus on the strip face. The forming technique imparts a high degree of reproducibility to the spacers, while still insuring a tight seal.

Abstract: A heat shrunk, high bulk, elastic, corrugated fabric comprising low shrink fill yarns and an alternating pattern of high shrink and ultra low shrink texturized warp yarns; and wherein substantially parallel corrugations extending along the fill direction are formed by repeated sinuous twists of the low shrink warp yarns.

Abstract: An air-borne and footstep noise insulating panel of synthetic resin foam is provided for floating floor pavements or floating wooden floors, said panel having in the interior thereof a multiplicity of voids extending normal or obliquely from one panel edge to the opposite panel edge. The panel preferably consists of a flexible closed-cell synthetic resin foam having a volume weight of 15 to 25 kg/m.sup.3, especially less than 20 kg/m.sup.3, having a cell diameter of less than 0.3 mm, and exhibiting good elastic recovery. The insulating panel has a dynamic stiffness, measured according to DIN 52214, of 1 to 13 MN/m.sup.3 and also possesses the required properties regarding long-term, burning, and insulating behavior.

Abstract: Nonwoven web and method of making including interbonded thermoplastic fibers in an array of hollow projections extending outwardly from at least one surface of said web. The projections are separated by land areas of interbonded fibers, and the fiber orientation is greater in the projections than in the land areas. Either the projections or the land areas may be perforated as desired for controlled porosity and fluid flow properties. The nonwoven webs of the invention may be made by a number of processes but, preferably, are made by forming directly on a surface with corresponding projections with or without apertures and a vacuum assist or by forming on an apertured surface with a pressure differential sufficient to draw the fibers through the apertures forming the projections.

Abstract: A light weight entangled nonwoven fabric formed by fluid rearrangement/entangling of an oriented web of fibers comprising at least 75% polyolefin staple fibers and displaying excellent machine direction and cross direction strength.

Abstract: A roof covering material is comprised of a polybitumen sealing web composed of a thermally weldable closed homogeneous sealing layer formed along an underside with parting and pressure equalizing means affording fluid communication over an internal region of juxtaposition of the web with a roof surface, and a support of a filamentary web impregnated with a polymerbitumen on an upper surface of the substantially fluid-impermeable web.

Abstract: The ribbed article has ribs which are built-up of multi-layer ribs. In the crossing points or overlap zones, some of the weld seams of one rib are continuous or discontinuous while the weld seams of the crossing rib are discontinuous or continuous as the case may be. The overall height of the overlap zone is the same as the ribs forming the overlap zone. A pair of guide beads are also applied to the base member prior to application of the first weld layer of a rib in order to guide the build-up of a rib.

Abstract: A loosely constructed knit or woven fabric is dimensionally stabilized by causing staple length textile fibers to be entangled about the intersections of the yarns comprising the fabric. The stabilized fabric is formed by covering one or both sides of the loosely constructed base fabric with a light web of the staple length fibers, and subjecting the composite material to hydraulic entanglement while supported on a porous forming belt configured to direct and concentrate the staple length fibers at the intersections of the yarns comprising the base fabric.

Abstract: A light weight entangled nonwoven fabric formed by fluid rearrangement/entangling of an oriented web of fibers comprising at least 75% polyester staple fibers, and displaying excellent machine direction and cross direction strength.

Abstract: There is disclosed an improved retainer for an automative floor mat generally having an upper bristled surface and a lower bristled surface divided by a planar surface. The bristles are removed from the upper and/or lower surface where the retainer is to contact the heel pad of an automative carpet. A non-slip surface may be provided on one or both sides of the retainer where the bristles have been removed.

Abstract: A body support pad for inhibiting the occurrence of decubitus ulcers. The body support pad includes a generally planar but flexible base member having an upper surface and a lower surface. A plurality of pillars are arrayed across the lower surface and extend outwardly therefrom. The pillars can be arranged in discrete arrays wherein the pillars in each array can have specific pressure dipersing characteristics. The body support pad also includes a plurality of pods extending outwardly from the upper surface of the base member. The pods can be arranged in discrete arrays wherein the pods in each array can have specific pressure dispersing characteristics. The body support pad also includes ventilation apertures for permitting free flow of air in and around the pad.

Abstract: A repeating arrangement of embossments for roll material includes a first array of projections generally regularly spaced from one another and a second array of projections superimposed on the first array of projections with each projection of the second array extending longitudinally between two projections of the first array so as to minimize nesting of adjacent layers of material.

Abstract: A magnetic recording medium having an excellent resistance to wear and CSS strength and showing a satisfactory lubricant retention, and processes for production thereof. The magnetic recording medium includes a substrate having formed thereon, in sequence, a magnetic recording layer, a protective coating, and a lubricant coating, the protective coating including a plane portion and a plurality of fine projections and recesses formed on the plane portion.

Abstract: A self-supporting composite plate for double floors or the like, comprising a pan-shaped wrapper for receiving therein a flowable and hardenable filler material of high compression resistance when in a hardened state, such as anhydrite or concrete. The pan-shaped wrapper comprises a plurality of downwardly extending burl-like projecting blocks containing the filler material. A base element of high tensile strength is connected to the projecting blocks.

Abstract: A microapertured polymeric web exhibiting a substantially uniform soft and silky tactile impression on at least one of its surfaces. In a preferred embodiment the present invention relates to webs exhibiting a fine scale pattern of discrete surface aberrations, each of said surface aberrations having its amplitude oriented substantially perpendicular to the surface in which said surface aberration originates. At least one tiny aperture (microaperture) is provided substantially coincidental with the maximum amplitude of each surface aberration. The discontinuity created by the aperture at the peak of each of the surface aberrations substantially reduces the resistance to both compression and shear of each individual surface aberration.

Abstract: A lightweight pliable flat conductor cable comprises a plurality of round wire conductors supported within generally parallel channels defined cooperatively by preformed and bonded plies of a polyimide insulation sheet material, particularly such as Kapton film. The Kapton film is highly resistant to degradation from exposure to ultraviolet radiation and further provides the conductor cable with a high degree of pliability throughout a broad range of temperature extremes, as encountered, for example, in an outer space environment. A method of forming the flat conductor cable is also disclosed.

Abstract: The packing elements are made with flutes to reduce the amount of material and to provide for better heat transfer for expansion of the elements. The flutes are imparted during extrusion of the molten mass of thermoplastic material through a die opening by virtue of the opening having been formed with grooves.

Abstract: A substantially planar reticulated material is formed by the conjunction of a plurality of strips of non-planar material so that the strips lie substantially perpendicular to the plane of the reticulated material with their edges lying coplanar with the reticulated material and forming opposite surfaces thereof. Each strip of nonplanar sheet material is formed on each opposite surface with a pattern of crests and valleys of repetitive wavelength such that each pattern repeat contains at least two crests and at least two valleys; in each pattern repeat the height of at least one crest or valley on at least one surface of the strip is different from that of at least one of the other respective crests and valleys on said surface; the recurring height difference produces a corrugation along the strip having a wavelength greater than the wavelength of the crests and valleys; and adjacent strips are abutted with the corrugation opposed to interfit at least one crest in a valley of each opposed corrugation.

Abstract: The present invention relates to second grade starches and wheat "B" starches in particular which, following conventional modification treatments to produce a correspondingly viscosity-reduced starch, are especially useful in the production of Stein-Hall corrugating adhesives. Corrugated paper board products manufactured using such adhesives have improved properties. In one aspect of the present invention there is provided a modified wheat "B" starch wherein aqueous dispersions of the modified "B" starch have reduced viscosities relative to comparable dispersions of a corresponding unmodified wheat "B" starch, the reduced viscosity not being less than about 12 centipoise grams per cubic centimeter for a specified dispersion.

Abstract: A method of making a high quality three-dimensional photograph is disclosed. The method utilizes a camera with a film mount therein, a rastor, a film, a separator for keeping the line rastor separate from the film, and a vacuum generating device for maintaining a vacuum in the vicinity of the separator thereby bringing the film into intimate contact with the separator and maintaining the intimate contact through successive exposures and movements of the film and line rastor. After repeated exposure of the film in various positions with respect to the subject being photographed, the film and rastor are laminated to opposing sides of the separator and the resulting photograph is viewed from the rastor-carrying side of the photograph by means of a light source and diffusion screen on the film-carrying side of the photograph.

Abstract: A sheet is disclosed for forming a plurality of coupling bands for connecting the ends of corrugated drain tubes having external grooves. The sheet includes a plurality of parallel lines of hollow lugs. The lugs are separated from each other by an integral web of plastic material. The lugs in each line are spaced sufficiently to allow the resulting coupling bands formed from the sheet to bend freely about the drain tubes to which the couplings are applied. Each line of hollow lugs includes a plurality of spaced-apart columns of hollow lugs aligned in end-to-end relation. Each column includes, in sequence, a first end lug formed to include a flat end wall upstanding in substantially perpendicular relation to the plastic web, a plurality of intermediate lugs of generally frustro-pyramidal shape, and a second end lug formed to include a flat end wall upstanding in substantially perpendicular relation to the plastic web.

Abstract: A vacuum formable film fill sheet for crossflow water cooling towers is disclosed having a repeating chevron pattern defining a series of zig-zag, serpentine, spaced ridges on opposed faces of the sheet with the ridges on one face of the sheet defining the grooves on the opposite face thereof and vice versa. The formed sheets are located in upright, horizontally spaced relationship between the overlying hot water distribution basin of the tower and the cold water basin thereof for generally horizontal flow of air past films of water flowing downwardly over the fill sheets. The angularity of the straight ridge sections of the chevron pattern with respect to one another, the vertical height of each repeat pattern, the transverse angularity of the ridges and the spacing between adjacent sheets has been unexpectedly found to provide significantly improved results as compared with prior chevron pattern fill sheets.

Abstract: A plastic film having a random embossed matte finish is provided. The random embossed matte film may be wound very easily into rolls and the roll contour achieved has superior uniformity. In addition, the film provides relatively equal tape adhesion and gloss properties on both sides which make it especially suitable for use in articles such as disposable diapers or underpads. Another advantageous property which renders it especially suitable for diaper conversion operations is its very low degree of edge curl. The thin film provides a totally different appearance as compared to conventional diaper films in that the overall appearance is a dull matte finish, but nonetheless having slight sparkles of brilliance throughout the surface, and it further provides a softer feel.

Abstract: A thermoplastic film having a permanently embossed design or geometric shape built therein for controlling the coefficient of friction of sheets of the film when placed adjacent each other. The film has a relatively smooth or female surface on one side and a relatively rough or male surface on the other side. By varying the relationship of one sheet of film placed adjacent another sheet of film or a surface area of the same film, a desired level of coefficient of friction can be obtained. A relatively low coefficient of friction is obtained when two sheets of the film are placed adjacent each other in a female side to female side relationship. A relatively high coefficient of friction is obtained when two sheets are placed adjacent each other in a male side to male side relationship. The film may be perforated or non-perforated and single layer or multi-layer.

Abstract: The packing elements are each formed with a hooked configuration so as to abut each other without interlocking with each other. The free ends of the two legs of each element project beyond the main body portions so as to impart a hooked effect to the elements. The elements can be poured from a hopper into a container.

Abstract: A structural material is provided with a surface having a selected pattern of indentations which disperse a radar beam on reflection therefrom so that the radar signal returned to the radar apparatus has an intensity less than 0.1% of the signal reflected from a smooth surface. The material is covered with a plurality of closely spaced indentations and/or raised portions in a random or systematic pattern having a depth or height or a radius of curvature in the range from about 0.2 to about 5.0 times the length of the waves used for normal radar detection of distant objects, e.g. airplanes, missiles, etc. Radar wave lengths are typically in the range from several millimeters to several hundred millimeters. The indentations or raised portions vary in depth or radius of curvature within the stated range and are variably positioned on the surface. A radar signal reflected from a properly constructed surface of this pattern is 99.995% less than a radar signal reflected from a smooth surface.

Abstract: The stretch film useful for wrapping is described which comprises a resin composition composed of:(1) from about 90 to 99.6 wt % of a resin A selected from the group consisting of ethylene-vinyl acetate copolymer resin containing 5 to 25 wt % vinyl acetate and polybutadiene resin;(2) from about 0.2 to 5 wt % of a fatty acid ester B selected from the group consisting of sorbitan oleate and sorbitan laurate; and(3) from about 0.2 to 5 wt % of a fatty acid ester C selected from the group consisting of monoglycerin oleate, polyglycerin oleate, glyceryl triricinoleate, and glyceryl aceryl ricinoleate,with the amount of said component B not exceeding the amount of said component C.

Abstract: Methods and apparatus for manufacturing solar heating devices of a type having bonded together sheets of thermoplastic material forming a flexible wall container for fluid to be heated. The methods and apparatus involve advancing first and second elongate indeterminate lengths of sheet material longitudinally along respective paths while heating, bonding and sealing the sheets. Specific arrangements and steps for heating, bonding, and sealing are described.

Abstract: A plastic sheet (13) having a surface with low friction and high gloss is produced by extruding a layer of thermoplastic and pressing it while hot against the surface of a chill roller (17). The surface of the chill roller (17) is characterized by being highly polished and having minute randomly distributed depressions therein of an average depth of about 5 microns, a depth standard deviation of less than 3 microns, and an average frequency of about 3,000 per square centimeter. The thermoplastic layer may be laminated to a single or multilayer base (12) to form a finished product (21). A polyethylene surface layer will have a coefficient of friction generally less than 1.0 with respect to itself, while the surface nonetheless retains a high gloss appearance.

Abstract: This invention relates to a frictional element that shall prevent relative-movement between construction parts and comprises a metallic plate with projecting teeth.

Abstract: A metal-reinforced synthetic wood material which is composted of a metal assembly used for reinforcement, and synthetic resin for covering the metal assembly. The metal assembly is, for example, formed of a high-carbon special steel, and the synthetic resin is, for example, foamed polyurethane. This synthetic wood material is manufactured by a method, which method includes the steps of placing the metal assembly in a mold of a molding machine, and injecting the resin material into the mold in a reaction injection molding. Thus, the synthetic wood material having high moisture resistance and sufficient strength can be obtained.

Abstract: A dimensionally recoverable body, which is preferably heat-recoverable, has a body wall which is provided with a plurality of locking elements that are engageable with each other, or are engageable with corresponding elements located on a separate partition, to furcate the body into a plurality of channels.The body may be used for enclosing branch-offs in electrical cables in order to protect the enclosed branch-off from the environment.

Abstract: A drawing material backing (1) is provided which serves to make technical and diagrammatic drawings and is provided on one side with an impressed orthogonal grid (2), which consists of defining pyramid-shaped embossed elevations (8) and has a grid line spacing (3) of 0.5 or 1 millimeter, so that the free-hand drawing of straight lines or of lines intersecting at right angles and with a selected spacing by means of a pencil, ballpoint pen or a paste-applying pen on a paper sheet applied to the backing will be facilitated. To improve the guidance of drawing implements having writing points or writing balls (9, 10) which differ greatly in diameter and to prevent an impression into the drawing paper, the side faces (5, 5a) of the grooves include a steeper angle (6) next to the bottom (4) of the groove and a flatter angle (7) in their upper portion so that the embossed elevations have the shape of pyramids (8) having angled sides.

Abstract: A ceramic tile has its rear uniformly configured as small frusto-conical or frusto-pyramidal tapered projections 2 of constant height, thus eliminating internal stresses during firing, eliminating zones of different color tone on the front face, and improving the gripping coefficient when laying.A portion of the projections 2, in groups of at least two, are taller to form feet 3 for resting during stacking.

Abstract: YA molded sheet of the single layer type for packing at least two directly superimposed layers of fluorescent light tubes comprising upwardly directed contours including longitudinally spaced apart tube cradling surfaces for each tube and longitudinally extending narrow tube separating ribs for a plurality of tubes in an upper layer, and downwardly directed contours including a series of flat support surfaces to hold the rest of the sheet elevated thereabove to facilitate drying of the damp sheet during manufacture, the series of support surfaces being dimensioned and arranged to contact the upper part of the same number of tubes in a lower layer and resist lateral shifting of the upper layer of tubes with respect to the lower layer of tubes.

Abstract: A portable airfreight container base panel or other load-bearing panel of hollow core reinforced construction comprising top and bottom sheets interconnected and maintained in parallel relationship by spaced parallel ribs, with the top sheet additionally supported by nonfastened intercostal tubular columns bridging between sheets and maintained in preselected design positions, suited to the specific load requirements of individual applications, by one or more styrofoam retainer sheets or equivalent means apertured to receive and hold the columns in position.

Abstract: A construction element of folded sheet material having a repetitive pattern of similarly shaped geometric figures. The tops of the figures lie in one plane and the troughs in a second parallel plane. Four tops are situated around one trough and are connected with it through four angled surfaces.

Abstract: A length composite member comprising a metallic sheet and a rigid synthetic resin coating is bent to be arcuate in transversal section. The thickness of the metallic sheet of such composite member as bent to be arcuate in transversal section is extremely small as compared with the radius of curvature of the desired arcuate sectional curve. A plurality of small arcuate sectional bent portions in transversal section are formed distributed in the transversal or width direction of the metallic sheet. The centers of the respective curvatures of these plurality of small arcuate sectional bent portions in transversal section are selected to exist on the same side as that of the center of curvature of the composite member bent to be arcuate. The metallic sheet is generally bent in advance to be arcuate in transversal section and both main surfaces of the metallic sheet thus bent are coated with rigid synthetic resin.

Abstract: An integrally extruded all plastic "pile" weatherstrip comprises an elongated longitudinal substrate from which vertically project a plurality of integral, spaced parallel, thin, flexible, deformable, wavy S-configured fin members. The exposed upper ends of all or any desired lesser number of the fin elements may be partially slit to from 20% to 100% of the fin height to control the amount of air and water moisture infiltration through the weatherstrip. The fin element ends are slit at a desired bias angle with respect to a horizontal line lying within a horizontal plane surface in which the fin ends are located. The extrudable plastic is preferably high density polyethylene, polypropylene or polyvinyl chloride and may optionally contain an ultra-violet absorbent composition and a partially compatible lubricant.

Abstract: Oil-resistant resilient mats to protect oil field workers from dangerous, high voltage electrical discharge comprise a first oil-resistant flexible resilient elastomer of extremely high dielectric strength which is usable by itself as a mat and also in combination with other oil-resistant elastomers of higher mechanical strength but less dielectric strength at high voltages and with metallic electrically conductive meshes to equalize mechanical and electrical stress across the first elastomer.The combination of metallic mesh and elastomer of high electrical resistance at high voltage provides mechanically strong and oil resistant mats that protect personnel in oil fields against high voltage and surges. The high mechanical strength elastomer layers mechanically protect the conductive wire mesh as well as the first elastomer.