Abstract: This corrugated strip comprises on its lower edge, in front view, at least one downwardly projecting motif (9) whose contour is such that, if &agr;m and &agr;M designate the ends of the algebraic value of the angle that the tangent to the contour forms with the horizontal direction, then −&agr;m>&agr;0 and &agr;M>&agr;0, wherein &agr;0 designates a predetermined angle at least equal to 5°. The corrugated is particularly useful in air distillation columns on board floating oil platforms or barges.

Abstract: Corrugating rolls for forming corrugated paperboard medium are given a flute valley profile having a narrow channel along the valley base between arcuate segments of the valley base that parallel the channel on opposite sides of a radial plane of symmetry. This valley base channel is of such depth as to relieve the fiber compression stress between cooperatively nipping flute tip and valley surfaces along the axial plane between respective corrugating rolls. One advantage of the invention is to increase the on-line time of plated rolls by limiting accelerated wear of the plating in the valley base channels of the rolls. The invention also provides an improved corrugating medium characterized by flute tips which are relatively less compressed as compared to adjacent flanking regions.

Abstract: A device for use as a meter pit or a traffic barrel, having double-walled construction in which one wall is a substantially smooth inner wall and a second outer wall is a corrugated wall, wherein the corrugated wall may be a singular wall extending from one end of the inner wall to the other end of the inner wall or a plurality of exterior walls attached sequentially at various points to the inner wall, the exterior corrugated walls may be linked to one another by a series of smooth walls. The corrugated wall has small, individual corrugations with the individual corrugations including a pair of trough walls and a crest, the small size of the individual corrugations making the device light-weight and impact resistant. The drum device is extruded and contains a polyolefin mixture, which preferably contains recycled and virgin polyethylene materials.

Abstract: A covering material having corrugations and having on one of its surfaces, hollowed areas (3) in the convex part (10) of the corrugations (2) for laying tiles.

Abstract: A molded structural-wood-fiber product is disclosed that is formed in three dimensions under conditions of heat and pressure. The molded product has the form of a single-piece wood-fiber web consisting of corrugations having indentations along the ridges of the corrugations on both sides of the web. Sheet facings may be applied to one or both sides of the fiber web to form a stiff, lightweight composite panel that has similar stiffness both along and across the corrugations. Several fiber webs or composite panels may be bonded together in stacked configurations to produce high-strength, light-weight panels, beams or platforms for heavy-duty applications. The unique structure of the three-dimensional fiber web permits straightforward high-speed manufacture using a rigid mold and one-dimensional pressing forces.

Abstract: An instant corrugating adhesive composition comprising a dry blend of starch and a dried pre-solubilized cellulosic extract. The composition can easily be rehydrated with water to make a corrugating adhesive. The corrugating adhesive is formulated without boron compounds and with minimal or no addition of alkali. The dried pre-solubilized cellulosic extract, which includes hemicellulose as a major component, functions as the carrier portion of the corrugating adhesive. No initial cooking step is required to make the carrier and rehydration can be conducted at ambient temperatures.

Abstract: A reinforced composite matting is disclosed, to provide a foundation for the development of vegetation to stabilize the channel surface, as a cost effective and environmentally friendly alternative to rip rap or concrete channel lining. The reinforced composite matting is formed of a bottom netting, a cuspated netting having ridges and troughs extending across the width of the cuspated netting, with the troughs substantially adacent to the bottom netting, and a top netting substantially adacent to the ridges of the cuspated netting. A fiber matrix, preferably of strands of coconut fibers is disbursed between the bottom netting and the cuspated netting, and the bottom netting, fiber matrix, cuspated netting and top netting are secured together, preferably with thread, to form the reinforced composite matting of this invention.

Abstract: A device for use as a meter pit or a traffic barrel, having double-walled construction in which one wall is a substantially smooth inner wall and a second outer wall is a corrugated wall, wherein the corrugated wall may be a singular wall extending from one end of the inner wall to the other end of the inner wall or a plurality of exterior walls attached sequentially at various points to the inner wall, the exterior corrugated walls may be linked to one another by a series of smooth walls. The corrugated wall has small, individual corrugations with the individual corrugations including a pair of trough walls and a crest, the small size of the individual corrugations making the device light-weight and impact resistant. The drum device is extruded and contains a polyolefin mixture, which preferably contains recycled and virgin polyethylene materials.

Abstract: A completely vented upholstered body of grid plates with a wave profile includes solid portions of the grid which pass through the wave extrema of its wave contour. Many of the solid portions of the grid preferably are disposed transversely to at least one wave propagation direction and, in each case, continuously over a large portion of a wavelength, at a distance from one another. There is only a limited, specified bending deformation, during which the solid portions of the grid can be deformed largely independently of one another as if they were individual spiral springs. As a result, the upholstered body has a high point elasticity despite the plate construction. By adroit dimensioning of the course of the wave thickness, an advantageous diffusion of stresses can be achieved without stress peaks. Moreover, the work of deformation is absorbed uniformly in the upholstered material. This results in a long service life of the upholstered body.

Abstract: A method for stabilizing soil and reinforcing vegetation includes placing a single-layered, three-dimensional, high-profile woven geotextile fabric into the soil. The single-layered, homogeneous fabric is woven from monofilament yarns having different heat shrinkage characteristics such that, when heated, the fabric forms a thick three-dimensional, cuspated profile. The monofilament yarns have a relatively high tensile strength and a relatively high modulus at 10 percent elongation so as to provide a fabric which is greater in strength and more dimensionally stable than other geotextile structures. Thus, the geotextile fabric is suitable for use on slopes, ditches and other embankments and surfaces where erosion control, soil stabilization and/or vegetative reinforcement may be necessary. The homogeneous, single-component nature of the fabric promotes easier handling and minimizes failure points, while offering a thick, strong and dimensionally stable product upon installation.

Abstract: An extruded foam polystyrene sheet is formed into a roof vent panel for a sloping roof at the eaves. The panel has flanges and an offset wall and is formed into through troughs end-to-end which are divided by truncated triangular ridges extending from the offset wall. The ridge is reinforced by gussets and saddles which are formed as sets along the ridges. The gussets extend from the offset wall to the ridge side walls and the saddles connect the ridge side walls below the truncated apex of the ridge. The gussets on each side wall are spaced and paired with one of each pair at the end of a saddle.

Abstract: In an optical element, an optically transparent substance is sandwiched between transparent paired plate-shaped elements by utilizing a connection member capable of deforming, and the angle formed by the paired plate-shaped elements is caused to vary by a force applied thereto from the outside, so that a predetermined optical characteristic for the passing light rays is obtained. The connection member is constructed from a high-molecular material capable of molding.

Abstract: The invention relates to a ribbed plate for a composite slab, the profile of which consists of protruding ribs formed in an essentially planar plate, the upper flanges of the ribs being surface profiled in order to achieve better adhesion between the ribbed plate and the concrete of the composite slab. According to the invention, the surface profiling of the upper flange of each rib consists of spaced apart corrugations extending essentially across the upper flange. Additionally, in the junction of the web between the sides of the rib and the upper flange there is formed a protruding longitudinal corrugation extending at least partly along a length of the rib.

Abstract: A method for stabilizing soil and reinforcing vegetation includes placing a single-layered, three-dimensional, high-profile woven geotextile fabric into the soil. The single-layered, homogeneous fabric is woven from monofilament yarns having different heat shrinkage characteristics such that, when heated, the fabric forms a thick three-dimensional, cuspated profile. The monofilament yarns have a relatively high tensile strength and a relatively high modulus at 10 percent elongation so as to provide a fabric which is greater in strength and more dimensionally stable than other geotextile structures. Thus, the geotextile fabric is suitable for use on slopes, ditches and other embankments and surfaces where erosion control, soil stabilization and/or vegetative reinforcement may be necessary. The homogeneous, single-component nature of the fabric promotes easier handling and minimizes failure points, while offering a thick, strong and dimensionally stable product upon installation.

Abstract: A method is provided for forming a corrugated structure from a fibrous web by first forming a fibrous web; alternatingly lapping the fibrous web; folding the fibrous web to form corrugations; brushing fibers from one corrugated peak to extend to an adjacent peak and bridge the gap therebetween; spraying resin on the corrugated fibrous web; heating the resin-sprayed corrugated fibrous web; or further sandwiching said fibrous web with a pair of outer webs with resin sprayed thereon and heating said sandwiched fibrous web. Another embodiment initially combines fibers of low melting point with regular fibers and heats the corrugated fibrous web after brushing, rather than spraying resin on the corrugated fibrous web.

Abstract: A chopping board is supported on a pad formed from a plastic material which prevents the chopping board from slipping or vibrating when used for chopping different food products. The pad includes a peripheral wall, abutments spaced from and extending circumferentially around an inner surface of the wall, and a corner through hole. The upper surface of the pad is provided with a plurality of spaced convex areas, with each area having an upwardly extending projection. The lower surface of the pad is provided with a plurality of corresponding spaced concave areas, with a plurality of downwardly extending projections disposed between the concave areas. The chopping board may be provided with a corner hole corresponding to the hole of the pad to permit the board and pad to be hung together on a hanger for storage.

Abstract: A film-type packing element (1) for use in a cooling tower comprises a formable sheet material formed with corrugations (3) and ridge formations (5) extending obliquely of the direction of the corrugations (3) to provide deflection channels for fluid descending over the packing element. The ridge formations (5) are divided into a plurality of groups (9) along the corrugation direction, with the ridge formations (5) of successive groups (9) being angled oppositely relative to the corrugation direction.

Abstract: A plurality of corrugated plates are arranged in parallel relationship with corrugations in adjacent plates extending in a criss-crossing pattern to form a packing element for a heat exchange or mass transfer column. The plates are spaced closer together by providing reliefs in adjacent plates at the points of intersection between the criss-crossing corrugations. The reliefs allow the corrugations on the adjacent plates to extend into each other to reduce the spacing between the plates. The reliefs may be in the form of apertures or recesses.

Abstract: An inverted V-shaped bulkhead void filler for filling empty spaces in a cargo area during shipping includes a novel non-pivotable, but disengagable, interlocking structure. The bulkhead void filler includes first and second rigid panels of a sandwich-type construction attached by the interlocking structure at an upper end of each of the panels. To form the novel non-pivotable, but disengagable, interlocking structure, the second panel includes a side clip and end clips attached to its upper end. The clips define a gap substantially equal to the width or thickness of a leg of the core. The leg of the core of the first panel is slid into the gap and held securely therein.

Abstract: A plastic liner for protecting concrete manhole interior surfaces from corrosion wherein the liner includes provisions for creating a strong mechanical lock between the liner and the interior surfaces. A side of the liner which includes the provisions has a plurality of raised hollow projections with spaced sections. The mechanical lock is created when concrete is poured against the side of the liner with the projections. The concrete at least partially enters the hollow portions and fills spaces between the projection sections. The projections also intersect to enhance the mechanical lock by preventing bulging. Liner sections cover essentially all of the manhole interior surfaces. Forming a liner section by rotationally molding the plastic and cutting gaps into the projections is also disclosed.

Abstract: A 2-dimensional carrier for picture, pattern and/or other information, produced from material, which is wavy or corrugated on its surface and the waves or currugations of which are pressed down or flat within or without contours, which are specified by the picture, pattern and/or the information.

Abstract: The present invention discloses an inverted V-shaped bulkhead void filler having a novel non-pivotable, but disengagable, fastener for filling empty spaces in a cargo area during shipping. The bulkhead void filler has first and second rigid panels of a sandwich-type construction attached by the fastener at an upper end of each of the panels. To form the novel non-pivotable, but disengagable, fastener, the upper end of the second panel fits snugly against and is attached to a portion of a core of the first panel, and a portion of the first panel overlaps and is attached to the second panel.

Abstract: An extrudable elastomeric composition including an elastomeric A-B-A' block copolymer where A and A' are each a thermoplastic polymer endblock and where B is a conjugated diene monomer unit having a low degree of residual ethylenic unsaturation; a polyolefin; and an effective amount of a transition metal compound which is substantially uniformly distributed in the blend containing the polyolefin and block copolymer so that the extrudable elastomeric composition is adapted form an elastic sheet that is degraded after less than about 30 days continuous exposure to a thermally oxidative environment. The transition metal compound may be a salt or complex of cobalt and/or manganese and is added in an amount that will provide at least about 0.01 percent, by weight, of the transition metal in the extrudable composition.

Abstract: The invention relates to honeycomb core components having an undulating configuration reinforced with structural rods or columns which provide nesting sites for indexing with the flutes or nodes of adjacent components when assembled in stacked relation. Methods are also disclosed for producing the core components and assembling them in finished honeycomb core configuration.

Abstract: This invention relates to an assembly composed of a plurality of generally parallel corrugated contact sheets. The corrugations form alternating apices in the sheets. The apices are connected by angled walls. The corrugations in each sheet are substantially parallel and disposed at an oblique angle to an edge of the sheet. Adjacent sheets are oriented such that the corrugations of one sheet cross the corrugations of an adjacent sheet at intersections of the apices. The sheets have generally planar positioner pads positioned at least at some of the intersections of the apices of the corrugations of adjacent. The apices have indented portions between each positioner pad.

Abstract: The manufacture of lightweight components having high strength properties can be improved in that a bowl-shaped shell (1) has reinforcing ribs (3) made from injected-on plastic in its interior (2) which are connected to the shell (1) at discrete connecting points (11) via perforations (12) in the shell (1), through which the plastic passes, extending beyond the surfaces of the perforations (12).

Abstract: A woven core structure (2) includes a first and second face sheets (4, 6) with inner surfaces (16, 18) facing one another. First and second sets of corrugated ribbons (8, 10) are positioned between the face sheets. The ribbons have nodes (12, 14) which are secured to the inner surfaces of the face sheets. The first set of ribbons extend transversely to, and preferably perpendicular to the second set of ribbons. The first and second sets of ribbons are woven such that the nodes of the first set of ribbons are spaced apart from and generally opposite the nodes of the second set of ribbons. This arrangement permits an increase in the node contact area (26) between the nodes and the face sheets to enhance the bond strength between the ribbons and the face sheets and to increase the skin deformation strength of the structure. The angle between the ribbons and the face sheets can be adjusted to optimize shear strength versus tension/compression strength.

Abstract: A corrugated sheet formed from a thermoplastic polymer is disclosed. The sheet has a plurality of fluid flow passages through each corrugation. At least one slope, and preferably both slopes, of each corrugation has a plurality of slits in side-by-side arrangement extending through the sheet, with the fluid flow passages being formed by displacement of the thermoplastic polymer between each pair of slits relative to the thermoplastic polymer between the pairs of slits adjacent thereto. One example of use of the corrugated sheet is in a panel heat exchanger, to cause turbulence in fluid passing through the heat exchanger. The preferred thermoplastic polymer is polyamide.

Abstract: A structural component of metal is protected against titanium fires that can be caused by flying and burning titanium droplets, e.g. in a propulsion unit. The protection against titanium fires of metal structural components is provided by a surface coating made of ceramic fibers embedded in a matrix material of a high temperature lacquer having dispersed therein aluminum powder as a filler material. The high temperature resistant lacquer is formed of silicates as a vehicle in which the aluminum powder is dispersed.

Abstract: A mechanical part has a contact surface for movement on a mating surface. The contact surface is first rough ground by using a grinding wheel of a grain size, for example, equal to or smaller than #200 and then barrel finished or buffed so as to have such a profile that its roughness spacing ranges from 5 to 100 .mu.m and more than half of its peaks are smoothly rounded.

Abstract: A substrate for a catalytic converter is formed of steel sheets embossed with corrugations in a chevron pattern such that the metal buckles at vertices of adjoining corrugations to form projections extending out of the plane of the sheet. The sheets are stacked with the projections registered to form weld points and capacitive discharge welding secures the sheets together. The substrate is formed in two halves which are clamped together and then secured by end rings.

Abstract: A three-dimensional structure adapted for use for instance as a core in sandwich panel-type construction, and comprised of substantially continuous unbroken sheet material to which has been imparted an alternating sequence of ridges and valleys, creating spaced rows of adjacent inclined rectangular-shaped facets connected by intermediate rows of adjoining parallelogram-shaped facets. The core structure provides substantially gridlike bearing surfaces on two opposing parallel bearing planes thereof to which face sheets may be affixed, to form a sandwich panel.

Abstract: A flexible biaxially corrugated sheet material is formed from a plurality of identical trapezium segments which are arranged in a plurality of long strips a single segment wide. Adjacent strips are mirror images of each other and connected along adjoining sides with the angles of the four corners of adjacent segments being alternately less than 360.degree. and greater than 360.degree. along the length of a strip such that the sheet material has an undulating configuration, and is inherently curved and cannot lie in a flat plane.

Abstract: A bacon pad made of liquid absorbent wood fibers is suitable for cooking bacon in a microwave oven. The pad is made as a three-ply laminate, with a corrugated center ply sandwiched between two flat outer plies. The pad is designed to absorb fat from the bacon while maintaining adequate mechanical strength. In one version, the pad is formed with angled barriers to positively prevent liquid fat from flowing off the pad.

Abstract: A composite expanded web for making a cigarette wrapper is provided, the web comprising a laminate of a first web of generally flat sheet material and a second web of expanded sheet material. The expanded web is formed by passing a web of sheet material through rotary shearing and forming dies to impart to the web a configuration having longitudinally disposed rows of generally sinusoidal convolutions extending above and below the original plane of the web, each row of convolutions lying 180.degree. out of phase from its abutting rows. The composite web is formed into a wrapper for a smoking article by curling it about its longitudinal axis, securing the overlapping edges of the first web with a glue seam, and cutting it to the desired length.

Abstract: This invention relates to a novel laminated paperboard and, more particularly, to a novel laminated paperboard with a center ply having alternating grooves and ridges, which has characteristics of strength and rigidity equivalent to solid laminated paperboard, but is 30% to 45% lighter in weight.

Abstract: Structured column packing having a fluted surface wherein the flute elevation forms a shelf sufficient to cause downflowing liquid to pool on the shelf thereby enabling more efficient countercurrent vapor-liquid mass transfer.

Abstract: A corrugated plastic slip pallet is provided and comprises an intermediate corrugated member sandwiched between two generally planar sheet-like panel members and having a flat body portion on which boxes are supported and three lip portions hingedly connected to edges of the flat body portion and forming an included angle therewith of between about 135 and 160 degrees and wherein the hinge connection comprises two spaced apart welded portions extending parallel to an associated edge of the flat body portion and wherein the portions of the intermediate corrugated member and the two generally planar sheet-like panel members between the two spaced apart welded portions are not welded together.

Abstract: A refractory heat-insulating graphite sheet material characterized in that the material comprises a graphite sheet.

Abstract: An extruded article is provided comprising a base element, and at least one rib element attached to the base element along its entire length. The rib element is narrower at its attachment end than at its free end, and is undulated.The article is formed by extruding an extrudable plastic mass having a conformable state and a nonconformable state. The extrusion rate of the free end of the rib element is sufficiently faster than that of the base element. The free end of the rib element will therefore undulate as the structure is extruded. The free end of the rib element is permitted to undulate without distortion of the base element while the plastic mass is in the conformable state. The plastic mass is then converted to the nonconformable state while maintaining the undulation in the free end of the rib element.

Abstract: Trickling sheet (2) comprising in the direction of its first side or base (3) a first zone which is greatly corrugated (5) and a second zone which is slightly corrugated or flat (6), of equal width, these zones being provided with spacer bosses (7) at the two sides of the sheet, the mean plane of the second zone or the plane of the flat zone (6) being offset in such a manner that the tops of the bosses (7) of one of the two faces of the sheet are co-planar. An assembly of such sheets juxtaposed with one another by turning one sheet out of two through 180.degree. about the median line (9) separating the two zones constitutes a packing element with rectilinear channels, without obstacles or awkward recesses or bottlenecks.

Abstract: A pair of panel sheets form a sandwich with an undulated ribbon-like spacer in the interior thereof and marginal spacers about the periphery of the sheets. A vacuum within the space between the marginal spacers insulates and rigidifies the assembly.

Abstract: A wrap-around cable sleeve liner is formed from a blank consisting of a smooth covering sheet and a corrugated sheet, which are secured together and have a line of indentations extending at an angle to the corrugations of the corrugated sheet adjacent each end of the sheet to form a bend line for the adaptation portions. The cable sleeve liner blank is preferably cut from a large area panel and has the indentations formed after cutting the blank so that blanks for different sizes can be formed as needed.

Abstract: The present invention relates to rounded corrugated sheeting (4) whose profile exhibits crest portions (5), flanks (6), and bottom portions (7). The crest portions (5) are located on the concave side of the rounded sheet and are provided with grooves formed by pressing during rounding of the sheeting. The grooves form ribs (10) on the convex side of the sheet. In the rounding of the sheet, the material present in the crest-portions (5) of the sheet (4) is distributed in a manner which facilitates rounding and counteracts the formation of folds or wrinkles in the crest portions (5), and prevents other forms of damage.

Abstract: A gas/liquid contact apparatus which includes a plurality of packing sheets arranged in parallel, vertical, upright, face to face relationship. The packing sheets have a series of inclined corrugations formed therein. Each of the corrugations are formed so as to define an alternating series of longitudinally extending oppositely inclined surfaces which intersect and pass through a center plane of the packing sheet so as to define hills and valleys. The inclined surfaces have an amplitude relative to the center plane of the packing sheet which is opposite that of the adjacent inclined surfaces of an adjacent corrugation. The packing sheets are arranged adjacent each other such that the corrugations of adjacent packing sheets are oppositely oriented. The adjacent packing sheets are secured together where the hills of one of the packing sheets contacts the valleys of an immediately adjacent packing sheet.

Abstract: Improved gas liquid contact sheets and contact bodies are disclosed comprising a plurality of parallel and generally vertical corrugated contact sheets, wherein the corrugations form alternating apices in the sheets, the corrugations being disposed at an angle to the horizontal and wherein the corrugations are substantially parallel and adjacent sheets are oriented such that corrugations of one sheet cross the corrugations of an adjacent sheet at intersections of the apices, the improvement comprising positioner pads positioned in apices of the corrugations of the contact sheets, such that at least about eighty percent of the intersections of adjacent sheets contain abutting pairs of the positioner pads. In addition, contact bodies in which adjacent sheet corrugations intersect proximate the edges of the contact sheets are provided.

Abstract: The invention relates to a packing device for an installation for the biological treatment of waste waters, of the type comprising an assembly of sheets (1) having corrugations and separated by flat sheets (2), said corrugated sheets (1) defining, in conjunction with the flat sheets (2), channels (7;8) which extend from top to bottom, and in which the waste water trickles countercurrently to an oxygen-containing gas. This device is characterized in that the crests of the corrugations have crenellations (9) which in conjunction with the adjacent flat sheet (2) bound passages establishing communication between two channels (7, 7 or 8, 8) lying on the same side of a corrugated sheet.

Abstract: An article is provided comprising a plurality of straight spaced parallel extruded elements separated by a regularly undulated extruded element having an aspect ratio of at least about two, with undulations having opposed apexes on either side thereof, with apexes on one side of the undulated element being bonded to one of the parallel extruded elements and the apexes on the other side of the undulated element being bonded to the other of said parallel extruded elements.

Abstract: Curled non-woven material formed of waves such as contiguous anti-nodes (9,10) of adjacent waves consist of small adjacent pads (11,12) located on the same side of the median plan (8) of the non-woven material.Use: Medical and surgical compressesFIG. 3.

Abstract: A contact body or evaporative heat and mass exchanger packing composed of a plurality of side-by-side thin sheets interlocked with one another. The sheets are grooved with a serpentine-like, continuously-variable, cross section form to produce a plurality of liquid and gas channels between the sheets. The sheets have integrally-formed knobs and sockets specifically located to provide up-spaced alternate sheet support without utilizing adhesives of any type. The sheets are preferably composed of a thermoplastic material of any desired length, being continuously pressure-vacuum formed from long sheet rolls. The groove crests abut adjacent sheets apices at continuously-variable spacings of both greater and lesser dimension than the basic edge spacing of the serpentine grooves. The flat crests or apices of grooves are also infinitely variable in width dimension while maintaining a constant sidewall groove angle.