Abstract: The sewer connector comprises an axially compressible hose and a storage container for maintaining the hose or any portion thereof in the compressed state. The container consists of a pair of semi-cylindrical housing portions having soft foam rubber strips which are connected to the inner periphery of the axial ends of each housing section. Slip rings are also provided for maintaining the two housing sections in radial opposition about the flexible hose thereby forming a cylindrical housing with the rubber strips holding the flexible hose in its compressed state.

Abstract: The invention pertains to an insert for flexible wall hose used in vacuum applications, particularly hydraulic vacuum environments, consisting of a tubular body of nonmetallic elastomeric material adapted to be closely received within the bore of the hose, the insert body being supported against internal collapse by a plurality of metal rings embedded within the insert body material. The rings are axially spaced with respect to the body length whereby the insert body may be readily severed intermediate adjacent rings, and the end regions of the inserts are defined by the elastomeric body material. A plurality of insert bodies are inserted within the hose to be internally supported, and the insert body construction permits the inserts to be readily located within all lengths of hose complete support of the hose in hydraulic vacuum applications and produces minimal flow resistance and turbulence.

Abstract: A thermoplastic corrugated drainage tube comprising annular peaks and valleys and a plurality of drainage openings internally cut about the circumference of each valley, the openings in each valley aligned with the openings in successive valleys along helical lines described by said openings. The method of forming the drainage openings comprises placing a cutting tool in the interior of the tubing and rotating the tool while moving the tubing axially past the tool. The cutting tool comprises a body having a plurality of radially projecting cutters spaced equidistantly about the cutter body and means for rotating the tool.

Abstract: An adapter for connecting a corrugated hose, e.g., a washing machine drain hose, to a standpipe has an elongated tube with a bell at one end for holding and retaining the corrugated hose. A curved support extends from the bell end of the tube and selectively supports the hose in a desired curve of from 0.degree. to 180.degree.. A sliding annular retainer ring slides on the curved support and selectively locks the corrugated hose in the chosen position. Outwardly extending ears on the end of the curved support hold the retainer ring on the adapter. The tube has longitudinal ribs over at least a portion of its length. The ribs provide additional strength and tapered portions on the ribs prevent the tube from jamming in a standpipe and provide for easy release. The ribs have enough friction to retain the tube in the standpipe in cooperation with the weight of the assembly and the water therein to prevent the hose from being forced from the standpipe by the jet effect of water moving therethrough.

Abstract: A metal, convoluted tube with integral, extending end connectors, with the inwardly extending convolutes of the tube exterior filled with and bonded to a non-porous elastomer, and the elastomer extends a substantial distance onto the extending end connectors and outwardly beyond the metal convolutes.

Abstract: Double wall helical pipe formed from a single metal strip, pipe forming method and configuration of strip for forming such pipe. A metal strip is formed with pipe seam elements and curled into overlapped helical convolutions, and the seam elements are secured together to provide a helical pipe seam. One or both pipe walls may be corrugated.

Abstract: A bellows which is made up of a plurality of coaxially joined bellows elements each having a plurality of n parallelogram-shaped wall elements of thin plate material joined together and positioned around a common center axis. The upper and lower edges of the thus joined wall elements define spaced parallel congruent planar orthopolygonal shapes each having n sides, n being equal to or greater than 3. Each of the orthopolygonal shapes in angularly offset in a direction around the central axis from the next adjacent orthopolygonal shape. The wall elements each have a fold line between the diagonally opposite vertexes which are the farthest apart. The bellows can have a further bellows with an axial cross-sectional shape in the form of waves joined coaxially thereto.

Abstract: A sound producing device where a recorded sound track on the external surface of an elongate member, such as a drinking straw, produces sound as the straw is moved through a resilient lid of a container.

Abstract: A drain pipe of corrugated form comprising corrugations of uniform inner diameter having axially in line alternating drain holes and outward protrusions in the corrugation troughs. The drain holes are cut by a stationary knife which engages the troughs of normally formed corrugations but which are set below the level of the protrusions, thus cutting a drain hole only in alternate corrugations. Preferably drain holes and protrusions are also staggered about the circumference of each corrugation trough.

Abstract: Side-folding bellows element which extends between a lens assembly in a movable lens mount and an exposure compartment in a folding camera, and which when folded has few overlapping parts, may be disposed generally at right-angles to the lens mount when the camera is folded, and may be completely accommodated in a clearance space which is necessarily made available in the camera in order to accommodate the lens mount, whereby provision of extra accommodation for the bellows element in the camera is unnecessary and a more compact folded camera construction is achieved.

Abstract: A vulcanized reinforced elastomeric hose and a method for its production wherein a layer of uncured rubber supported on a mandrel is surrounded by reinforcement filaments and thereafter vulcanized. In the same method of the invention recesses are provided in the surface of the uncured rubber beneath the reinforcement filaments to accommodate expansion of the mandrel and/or expansion of the uncured rubber and/or shrinkage of the filaments and thereby prevent rubber from being exuded above the reinforcement filaments on curing.

Abstract: An artificial blood conduit comprises two concentrically associated tubes. Convolutions in the tube walls provide flexibility and reduce the tendency to kink. The inner tube is porous to promote the growth of a stable biological interface. The outer tube is impervious to prevent contamination of the blood in locations external to the host body. Rigid reinforcing rings located between the two tubes and affixed to the outer tube, provide the conduit with strength to resist collapse from a wide variety of stress forces. A Dacron cloth sewn tightly around the exterior of the conduit allows tissue fixation without puncturing the conduit. End connectors are provided for different types of anastomoses.

Abstract: A sleeve of plastomeric or elastomeric material with inner and outer peripheral wall sections which are interconnected by connecting wall sections decreasing in thickness from said inner peripheral wall sections toward said outer peripheral wall sections. Each of the outer peripheral wall sections is provided with an intermediate constriction dividing the respective outer peripheral wall section into two foldable sections.

Abstract: A pipe made of fiberglass or the like includes a helical reinforcing member bonded to its outer surface substantially over its length with adjacent convolutions spaced with respect to each other. The reinforcing member or rib includes a filament-wound composite of a series of continuous resin impregnated glass filaments arranged in a bundle and surrounded by a helical fiber having spaced adjacent convolutions. An alternative construction further includes a core of paper or plastic or metal within the bundle to increase the rib height. An auxiliary bundle forming apparatus is employed with a filament winding machine so that the same winding machine and additional lengths of continuous glass fibers drawn from a common storage station may be utilized to form both the fiberglass pipe and the reinforcing rib. A spiral guide may also be used with the auxiliary bundle forming apparatus and the filament winding machine to add an inexpensive elongated core to the bundle forming a reinforcing rib of increased height.

Abstract: An improved plastic composite pipe structure includes an outer corrugated pipe, an inner smooth-walled liner, and joining means including a bell fitting at one end of the liner extending beyond the outer corrugated pipe and a spigot fitting at the other end. The corrugations of the outer pipe at the spigot end are undercut so as to slide over and provide crush resistance to the joint that is formed when the spigot of one composite pipe section is inserted into and engaged with the bell of an adjacent composite pipe section. A seal, for example, an elastomeric gasket, solvent weld, or elastomer-based adhesive is used to provide a leakproof joint. Optionally, an outer pipe cover can be utilized as a component of the composite pipe.

Abstract: A self-sustaining length of shirred tubular food casing comprising a stick of shirred and compressed tubular food casing having a bore extending therethrough and a sheathing material closely drawn about the periphery of said stick of shirred food casing and down about at least a portion of the terminal pleats at each end thereof and terminating at each end thereof in a reinforced aperture aligned with the bore through said shirred casing stick, said sheathing material totally retaining said stick of shirred food casing therein and forming a self-sustaining length thereof that will not be prematurely deshirred.

Abstract: A perforated corrugated tube of thermoplastic or like material in which the tube is made with radially inwardly extending blisters in the valleys thereof which are sheared off to provide perforations through the valleys of the corrugations, the apparatus and method being characterized in that the perforated corrugated tube is made in a continuous manner by molding the tube with the blisters in a traveling mold and shearing the blisters as the tube emerges from the traveling mold. A further characterizing feature of the perforated corrugated tube herein rendering it useful as for highway drainage and frostproofing purposes, is that it is formed with a smooth walled channel-like bottom portion having upwardly diverging side walls merging with the remaining perforated corrugated portion of the tube.

Abstract: This invention relates to an improvement in a sheathed, hollow, cylindrical stick composed of a flexible tube folded by longitudinal shirring, the improvement comprising a cylindrical, flexible jacket means enveloping said stick and projecting over the ends thereof, parts of the projecting portions touching the end walls of said stick with their inner sides, annular disc means on said projecting portions, and said projecting portions being inverted outwardly around said disc means in a manner such that the inner walls, the end surfaces and the outer walls of said disc means are tightly covered, and said inverted portions being parallel to said jacket means and close to the exterior thereof. The invention also includes an embodiment wherein annular disc means are inserted inside the jacket means and adjacent to the end walls of the stick, the projecting portions of the jacket means are inverted around the annular disc means and clamping means are inserted in the opening of the annular disc means.

Abstract: A sandwich wall for pipes, tanks, and the like fluid confining uses, wherein concentric inner and outer glass fiber reinforced plastic skins or shells are separated from one another by essentially radial ribs integrated into the shells to form a monolithic construction. The ribs are of limited axial extent and are separated from one another by rib forms of substantially greater axial extent, the rib forms functioning essentially as spacers without otherwise materially contributing to the strength or rigidity of the structure. The ribs are composed of essentially the same resinous material as the shells plus a filler, which typically can be chopped glass fiber strands, sand, or other particulate material, glass fiber mat or woven fabric, glass flakes, or mixtures of such materials. The ribs may be either helical and continuous throughout the axial extent of the wall or annular and independent of one another. Various methods of making such sandwich wall structures are also disclosed.

Abstract: Autoclavable, corrugated, respiratory care tubing comprising thermoplastic material which is aliphatic olefin polymer, aromatic olefin block polymer or mixtures thereof, the material being hydrolytically stable, having a flexular modulus according to A.S.T.M. D-790 of less than 1800 kg/cm.sup.2, having a Shore A hardness according to A.S.T.M. D-2240 of from 45 to 92 and being substantially dimensionally stable in steam at temperatures of at least about 120.degree. C.

Abstract: A diving snorkel has a flexible, tubular section having a substantially smooth inner surface to permit laminar air flow therethrough.

Abstract: A method and assembly for making a power transmission belt having driving teeth on opposite surfaces thereof and a tensile member embedded therein. The disclosure also relates to a belt made by the method and apparatus.

Abstract: A corrugated plastic drainage pipe having a coupler integrally formed at one end thereof and wherein the coupler is in the form of an enlarged collar having an inner diameter and length so as to receive the end of a connecting pipe therein and having a plurality of spaced latching members integrally formed with and extending radially inwardly from the inner surface of the collar. The collar has sufficient flexibility and resiliency so that when the end of a corrugated pipe is inserted in the collar the latching member may be outwardly displaced momentarily with respect to one another for facilitating making the interconnection, and thereafter return and engage the ribs of the corrugated pipe and provide a releasable connection therewith.

Abstract: A bendable wave guide comprising a bendable tubular section for the propagation of microwaves through the length of the section is disclosed. The bendable section is made of a highly conductive and ductile metal and, in the preferred embodiment, has a rectangular cross section. The bendable section has a smooth inner surface and an outer surface a portion of which is milled to have a series of transverse circular or spiral ridges and furrows along its length. When the wave guide is used, that area of the surface where the furrows are is deformed to accommodate bending, while the ridges maintain the rectangular cross section of the wave guide. A pair of coupling flanges are secured to the ends of the bendable section and allow the wave guide to be connected to a microwave unit.

Abstract: A flexible multilayer wave guide and method of making the same is disclosed. The wave guide comprises a flexible section for propagating microwaves and a pair of coupling elements for connection to existing microwave units. The flexible section is corrugated and has an outer layer made of a flexible and strong metal. Its inner surface comprises a relatively thin layer of a highly conductive metal which is supported by the outer layer and gives the wave guide the desired electrical properties.A method of fabrication involving the deposition of the inner conductive layer and the outer support layer of the wave guide on an arbor is also disclosed. This technique allows the fabrication of a wave guide with a far greater number of convolutions along its length than was possible using prior art mechanical manufacturing methods. In the preferred embodiment, the arbor is made of metal, and the inner layer and outer layer are successively deposited on the arbor by electrodeposition.

Abstract: A duct for the circulation of a hot fluid under pressure and formed in a cold structure of concrete is lined with rigid heat-insulating material such as pumice concrete. A corrugated lining membrane is applied in close contact with the heat-insulating material by means of radial members which are disposed in uniformly spaced relation and anchored in the cold structure.