Abstract: This invention, a measuring device, utilizes a projection of filtering method to facilitate reading of very fine lineal graduations such as 64ths, half millimeters and decimal hundredths of an inch whereby two series of lineal graduations perform two separate functions coordinating to filter lineal graduations through to the measuring edge. The first series extends to the measuring edge performing the measuring function, the second series pulling a short distance away from said edge providing a guidance means function while also indicating divisional breakdowns in fractions, millimeters and decimal hundredths.

Abstract: A digital scaler for measuring and displaying a distance on a drawing surface comprising a first triangle with a verticle straight edge and a second triangle with a horizontal straight edge slightably engaged with the first triangle along the vertical straight edge. A drive in the form of a drive wheel and pulleys are connected between the first and second triangles and can be activated to displace the second triangle with its horizontal straight edge along the vertical straight edge of the first triangle. A horizontal displacement measuring device is connected to the first triangle and engageable with the drawing surface to measure the linear displacement of the first triangle when it is drawn horizontally across the drawing surface. A vertical displacement measuring device is connected to the drive wheel and measures the displacement of the second triangle along the vertical straight edge of the first triangle when the drive wheel is rotated.

Abstract: A duct reinforcement and a method for building the reinforcement including a special tool for use in a preferred method are disclosed. The duct reinforcement includes a support washer on each of two opposing sides of the duct to be supported and a stiff wire extending through the sides of the ducts and both washers. The portion of the wire protruding beyond each support washer on the outside of the duct forms a hook with a tip of the wire substantially opposed to the outer face of the respective support washer. A preferred form of the support washer forms a volcano-shaped contour surrounding the washer hole on the outer face so that the tip of the wire makes contact with the washer inside the crest of the volcano-shaped contour. A preferred arrangement includes a rubbery seal between each support washer and the respective side of the duct to prevent leakage from the duct.

Abstract: A pipe having a sealing member (3) in an inner groove (2) at one pipe end (1). The sealing member provides a very effective seal relative to a spigot end (1a) of another pipe inserted in the pipe in question. The free ends of lip portions (6,7) of a sealing ring (4) (the cross section of which is of V-shape when undeformed) are provided with beads (8) so that behind a stiffening ring (5) surrounding said sealing ring (4) there is more volume of lip material than there is room for in the space confined by the adjacent part of the bottom of the groove (2), the exterior (1a') of said spigot end (1a), the rearmost sidewall (2') of the groove (2) and the stiffening ring (5). The pipe is preferably a plastic pipe.

Abstract: A transmission line carrier for the arrangement between a moveable consumer and a stationary connection comprising a row of tubular members which can be angled with respect to one another and engage in one another, including an alternating arrangement of wide tubular members with inwardly directly abutments and narrow tubular members with outwardly directed abutments. Each wide tubular member is shorter in the vicinity of a cross-section half thereof approximately by the width of a channel, which channel is arranged between the abutments of each narrow tubular member.

Abstract: A filling device adapted for hanging on the side of an aquarium and Ecolarium comprising of an enclosed cup with an elongated tube protruding upward from the rim of the top of said cup. The tube being long enough to span the area from the bottom of the container to the top where the tube is flared inwardly and flat and hooked to the foreside of the container, for holding in an up right position while filling the enclosed cup also having very small holes from the enclosed topside stopping the downward and sideward plunge of the water as it is poured, small streams protruding upward and inward eliminating disturbing landscapes and waterscapes. The same also being telescoped for adjustment for taller tanks the upper tube being smaller than the lower tube in order for insertion into the lower larger tube affixed to said bottom deflector.

Abstract: This invention relates to crack arrestors for arresting longitudinal propagation of a crack in pipelines carrying natural gas or highly volatile normally gaseous liquids or combinations thereof, and to methods for applying said crack arrestor to pipelines.

Abstract: A flexible pipe joint according to which a pair of spaced apart and opposed hard tubular bodies are interconnected with each other by means of a cylindrical rubber body with a reinforcing layer embedded therein and having an end wound around a core ring, each hard tubular body being provided between its inner end and the core ring with a circumferential rib and reinforcing member.

Abstract: Spacer for concentrically disposed tube systems where a temperature drop exists between adjacent tubes. This may consist, for example, of a superconducting electric cable or alternatively of a tube system for carrying heated liquid or gaseous media. The concentric tubes are spaced by a winder which touches the surfaces of adjacent tubes at particular points and which consists of two ribbons of insulating material disposed adjacent to each other having two elements in-between, and one of them being wound about the other so that they touch adjacent ribbon surfaces only in isolated points.

Abstract: Thermal insulation, and method of applying the same, for steam lines or other conduits carrying fluid at temperatures differing from the ambient air or ground temperatures, the structure and the method being useful in new construction and especially in replacement of deteriorated insulation in old construction. A trough-like supporting structure (e.g., the lower half of an original circular casing containing the conduit and original deteriorated insulation) is coated with a permanently flexible waterproof coating, then a body of foamed insulating material is built up on this coating, to encompass the conduit, then a permanently flexible waterproof coating is applied over the body of foamed insulation to join in sealing relation to the waterproof coating previously applied to the supporting structure.

Abstract: Apparatus for impeding the leakage of a gaseous medium between the rotating and stationary components of a machine is disclosed. Various construction details which are specifically adapted for use in gas turbine engines are developed. Wide channel type sealing techniques are discussed in combination with honeycomb facing materials.

Abstract: An improved elongate deformable tube for use in the conveyance of fluids and/or fluid transmission signals under pressure having a bore therethrough enclosed by a composite annular wall comprising a seamless, as welded, or welded and drawn inner tubular shaped layer made from a metallic material and an outer tubular shaped layer made from a polymeric material. The walls of both the inner and outer layers are substantially uniform in radial thickness around their circumferences with the radial wall thickness of the outer polymeric layer being 50% or more than the total radial thickness of the composite wall of the tube. The outer layer is preferably formed about the inner layer by means of an extrusion process.

Abstract: A puncture sealing apparatus for handing a fluid such as aircraft fuel, and a method for manufacturing a puncture sealing apparatus for handling a fluid. A metallic tubular member is provided which defines a chamber for the fluid; the metallic tubular member being constructed of a material which tends to deform outwardly upon a projectile exiting the chamber. A layer of puncture sealing material is disposed in covering relation to the metallic tubular member. An overwrap of filament material is wound directly onto the metallic tubular member in a predetermined winding pattern, and at a predetermined wrap tension, and the coating of puncture sealing material is disposed in covering relationship to the overwrapped metallic tubular member.

Abstract: A tube of thermoplastic material having a flexible zone intermediate the ends thereof which may be flexed without substantial springback. The flexible zone comprises a series of circumferential grooves having an annular floor from which two opposed groove sides convergently extend.

Abstract: A pressurizing tank for a liquid dispensing system is disclosed. The system includes a pressure withstanding vessel having openings at both ends with a strainer fitting fixed in one of the openings. A flexible, inflatable, gas-tight bag is provided in the vessel and has an inflating valve at one end thereof which is fixed in the other opening in the vessel. The other end of the bag is fixed to the strainer fitting.

Abstract: A composite tubular assembly comprising a membrane for membrane filtration fixed to the inner side of a tube of non woven material, consisting of a wound band of a sealable fibres containing non woven material, which may be helically or non helically wound, consecutive overlapping windings of the band being completely interconnected by ultrasonic heatsealing and thereby forming a smooth inner wall of the tube.

Abstract: A process for producing a laminate comprising a metal sheet having thermoplastic material on both sides thereof is described. The thermoplastic material is calendered to produce an upper thermoplastic sheet and a lower thermoplastic sheet. A metal sheet is fed into the nip between the calender rolls in order to contact the metal sheet simultaneously with the upper and lower thermoplastic sheets, thus producing a laminate. Processes for producing a pipe-wrapping material, a roofing structure and a solvent-welded joint are also provided.

Abstract: A polymeric hose and method of making same are provided wherein such hose comprises an inner base tube, a reinforcing braid made of aramid yarn disposed concentrically around the base tube with the aramid yarn having great affinity for water, a cover tube disposed concentrically around the reinforcing braid, and a moisture-impervious tubular film disposed between the braid and cover tube with the film isolating the aramid yarn and resulting in a tubular zone between the braid and cover tube free of water moisture created bubbles.

Abstract: A multilayer vessel or tube comprises an inner core tube and a plurality of supporting layer tubes around said inner core tube which have degassing bores. A blind layer is provided between the core tube and the innermost supporting layer tube and a plurality of core plugs rest on the core tube and are provided in a number corresponding to the number of degassing bores. The blind layer has an opening therethrough and is longitundinally split into segments and a parting channel is formed between every adjacent two segments. A core plug is positioned in central alignment with the parting channel in an opening of the blind layer. One of the supporting layers is welded only by its upper portion to the supporting layer and the core plug has a bore communicating directly or indirectly with the atmosphere. A degassing pipe is threaded into a threaded bore defined in the core plug and the core plug is provided with grooves which extend transversely along its underside, which rests on the core tube.

Abstract: The formation of articles using an elongated strip which has on it a series of longitudinally positioned upstanding ribs to form between them a series of longitudinally positioned channels and including connectors, on the strip spaced apart transversely on the strip whereby the strip can be wound helically to form an elongated object with the connectors interengated along a helical line to lock the strip in object form.