Abstract: A rigid, molded fiberglass duct having an integral bendable elbow comprised of two sections of cured fiberglass securely bonded to a corrugated metal-foil sleeve. The method of manufacturing the rigid bendable duct is by sliding a corrugated metal-foil sleeve on to a mandrel and then wrapping the ends of the sleeve with uncured fiberglass. The area of the uncured fiberglass overlapping the corrugated, bendable sleeve is compacted by means of a collar which fits around the sleeve and the fiberglass and compresses the fiberglass into the corrugations of the sleeve. In order to enhance the bond, protusions may be provided in the overlapping area of the sleeve, such as by cutting the corrugated sleeve and bending it up to form tabs.

Abstract: A novel seal around conduits passed through walls of fluid-containing housings embodying a stretchable annular butyl-rubber-like sheet washer stretch-fitted upon the inner end of the conduit and conformed to the inner wall portion of the housing around the conduit and held there-against by the pressure of the fluid against the washer irrespective of the contour or irregularities or material of the inner wall surface.

Abstract: A flexible conductor adapted for use as a "marine riser" in offshore drilling and production operations. The conductor includes a central flexible elastomer portion connected at each end with a rigid tubular portion. Disposed in the elastomer portion are inner and outer reinforcing members for containing the pressure differential across the central portion and for carrying the compressive loads. A plurality of circumferentially spaced longitudinally extending metal wires are disposed in the central portion between the inner and outer reinforcing members for enabling flexing of the central portion while carrying the tension load on the flexible conductor. The longitudinally extending wires are secured to the end portions by threaded retainers for ease of assembly.

Abstract: The present disclosure is directed to a method of externally sealing underground sewage system joints against entry of ground water to the system and which requires placing a continuous elastomeric band about a first one of the joint elements prior to its interconnection with the adjacent joint element, then interconnecting the adjacent element to said first element, and thereafter positioning the elastomeric band so that it substantially equally overlies the joint between said first and second elements with one-half of the band width overlying each element.

Abstract: A retainer gland and gland assembly for mechanical joint pipe. The retainer gland has at least one hinge arm extending axially from a side of a flat ring flange portion on the opposite side of the flange ring from a circular rib gland portion. The hinge arm has a transverse hole through its outer end. The gland assembly includes two identical retainer glands encircling a spacer pipe the ends of which are inserted into opposed mechanical joint bells. The flange ring of each retainer gland is bolted to the flange of the respective mechanical joint bell, and the hinge arms of the two glands are pivotally connected by a hinge bolt passing through the transverse holes. The resulting restrained mechanical joint connection not only permits assembly of angularly misaligned pipes, up to the limits allowed by the standard mechanical joint bells, but also accommodates changes in angular alignment after installation, due to settling.

Abstract: An expansion joint for connecting a pair of adjacent ducts or the like is made up from a material having improved properties. The material comprises a sheet of knit wire covered on at least one side with a vulcanized fluoroelastomer.

Abstract: A valve for an arterial monitoring set which continuously supplies a small flow of parenteral liquid, such as normal saline, into a patient's artery while arterial pressure is being continuously monitored. The valve has a flow restrictor providing a normally slow continuous flow rate and an elastically distortable tube which is manually squeezable to provide a fast flush rate. The valve is convenient for one hand operation. A method for assembling the valve by twisting the tube is also disclosed.

Abstract: An apparatus for extemporaneously mixing two substances and dispensing the resulting mixture is disclosed, wherein the container for the solvent and the container for the substance to be dissolved are sealingly and removably retained in superimposed position by a sleeve provided with and axially-extending, substantially cylindrical transfer spout the outwardly projecting end whereof is shaped as a piercing tip and having therein two parallel, adjacent passages. The opposite outlets of one passage are offset to the corresponding outlets of the adjacent passage.

Abstract: An apparatus used for measuring the pressure within a body cavity and methods of manufacturing and using same. An elongated catheter has its perforated body end disposed in a guide tube used for introducing the catheter. Both the catheter and guide tube are prefilled with sterile liquid and sealed against loss thereof and disposition of the guide tube and catheter. The gauge end of the guide tube is releasably sealed and secured by a tubular member fitted frictionally over the gauge end of the guide tube and catheter.

Abstract: A flexible plastic nipple for coupling a sprinkler head to a sprinkler system pipeline. The nipple includes an elongated plastic tube having a resilient center section and a pair of end sections. The center section has a uniform set of annular undulations which provides both rigidity and flexibility to the nipple. Each end section includes a rigid portion, a flexible threaded section, and a snub portion for mating the nipple with a connector fitting on the sprinkler head or pipeline. The threaded portions have sufficient flexibility to prevent rupturing or stripping when a force is transmitted to the nipple. In addition, the center section will bend before the force transmitted to the threaded portions becomes excessive and will rebound to its original position when the excessive force is removed.

Abstract: An axially flexible sealing device connecting two pipeline ends which comprises a number of sealingly connected annular members, each annular member including an inner cylindrical member, two spaced apart outer cylindrical members, and separate flexible ring members connecting the outer cylindrical members to the inner cylindrical member, each outer cylindrical member having a portion extending axially beyond the adjacent end of the inner cylindrical member when the attached flexible ring member is in an untensioned state. The sealing device is designed for use in connecting two pipelines located beneath sea level wherein the end of one of the pipelines is located in a hollow structure and one of the sealing devices is connected thereto, whereas the other end of the sealing device is sealingly connected to one end of a penetration sleeve which is sealingly connected through the wall of the structure (the other end of the sleeve being connected to the end of the other pipeline).

Abstract: The specification discloses flexible plastic collars for joining non-interengaging pipe sections and allowing movement therebetween. The collar includes a narrow flexible mid-section with inwardly biased cylindrical skirts that taper outward from relatively thick and relatively rigid shoulders on either side of the flexible center portion. The shoulders have an annularly shaped channel on the inside surface thereof, with O-rings positioned therein which form a seal between the collar and the pipe ends.

Abstract: Flexible expansion joints utilized for coupling conduit pipes or pipelines for conveyance, supply, service and drainage of service water, sewage, industrial water, etc. are provided, which comprise a tubular flexible body portion and two side joint portions. The tubular flexible body portion comprises bias cord reinforcement layer(s) provided circumferentially at a "cord angle" of 10.degree. to 45.degree.. Alternatively, it may further comprise circumferential cord reinforcement layer(s) circumferentially provided at a "cord angle" of 0.degree. to 25.degree. inside the bias cord reinforcement, and a plurality of coaxial rigid rings. The flexible expansion joints have good pliability, flexibility, vibration absorbing property, internal and external pressure resistance, durability, anti-deformation property and the like.

Abstract: A coupler for connecting adjacent ends of clay pipe with a generally cylindrical flexible sealing member of urethane or the like having opposing inner and outer central grooves which extend circumferentially and pairs of circumferentially extending outer support grooves flanking the outer central groove. Rigid rings of fiberglass are provided in the grooves. The central ring has an inwardly extending stop portion and unitary sealing lips are provided on the interior surface of the sealing members between the support grooves of each pair.

Abstract: An axially flexible sealing device connecting two pipeline ends which comprises a number of sealingly connected annular members, each annular member including an inner cylindrical member, two spaced apart outer cylindrical members, and separate flexible ring members connecting the outer cylindrical members to the inner cylindrical member, each outer cylindrical member having a portion extending axially beyond the adjacent end of the inner cylindrical member when the attached flexible ring member is in an untensioned state. The sealing device is designed for use in connecting two pipelines located beneath sea level wherein the end of one of the pipelines is located in a hollow structure and one of the sealing devices is connected thereto, whereas the other end of the sealing device is sealingly connected to one end of a penetration sleeve which is sealingly connected through the wall of the structure (the other end of the sleeve being connected to the end of the other pipeline).

Abstract: A foam extrusion apparatus and method employs an extruder on an upper level extruding foamable extrudate into the upper end of a large elongated barometric leg which extends at a relatively shallow angle into a pool of water at a lower level. A conveyor in the barometric leg extends through a large radius in the pool to guide the extrudate from the pool for further processing. The leg is in the form of an elongated pipeline fabricated from sections and supported on an inclined ramp. Some of the sections are securely anchored to the ramp to resist axial forces when the leg is evacuated. The sections may be reinforced concrete or fabricated reinforced steel of a variety of sectional shapes. Each section is sealed end-to-end so that a vacuum within the leg will draw water from the pool into the leg leaving a vacuum chamber at the upper end of the leg in which the extrudate expands.

Abstract: A pipe coupling formed by a tubular plastic member having at one end a portion of increased diameter defining an inwardly facing annular recess, and an annular sealing ring bonded therein by a foot portion substantially filling the recess and having a sealing head portion projecting partway across the interior of the coupling and secured to such foot portion by a neck portion. The seal ring configuration lends itself to injection molding of the assembly.

Abstract: A mixer for mxing concrete and comprising an annular mixing tub. A rotor is situated at the center of the mixing tub above the same. The rotor is rotatable by means of driving means and carrying agitating means including a number of agitators. They extend down in the mixing space of the mixing tub and are provided with means for feeding of liquid to the mixture. The rotor has the shape of a preferably circular case with its outer border extending substantially to the inner border of the annular mixing tub and including an inner space. The periphery of the case carries a number of tubular arms each extending substantially in a radial direction and carrying said agitators with said inner space in the center of the case in connection with conduit means for the supply of liquid and by means of said respective tubular arms to the liquid feeding means of the agitators.

Abstract: A wine breather apparatus for aerating wine having a motor driven oscillating coupler for connecting two wine containers to flow wine from one container to the other upon oscillating of the coupler and the containers to aerate the wine with a valve on the coupler for allowing outside air into the coupler and containers during oscillation thereof to aerate the wine.

Abstract: Pressure suit mobility joints for use in interconnecting adjacent segments of an hermetically sealed spacesuit in which low torques, low leakage and a high degree of reliability are required. Each of the joints is a special-purpose joint characterized by substantially constant volume and low torque characteristics and includes linkages which restrain the joint from longitudinal distension and includes a flexible, substantially impermeable diaphragm of tubular configuration spanning the distance between pivotally supported annuli. The diaphragms of selected joints include rolling convolutions for balancing the joints, while various joints include wedge-shaped sections which enhance the range of motion for the joints.

Abstract: A separation column comprising a column tube and terminal flanges, wherein the terminal flanges are attached to the column tube by means of a two-layer material which encloses a portion of the column tube and a portion of one of said terminal flanges, said two-layer material comprising a fusible plastic layer in contact with the column tube and said terminal flange and an outer hose of shrinking plastic, having been subjected to a heat treatment causing the fusible plastic layer to fuse and the shrinking plastic hose to shrink.

Abstract: A pipe coupling comprises a flexible insertion socket for inserting thereinto the pipe ends of pipes, particularly those made of mineral materials, that are to be connected together. The insertion socket is in the form of a cylindrical body open at both ends. It has an outside diameter larger than the diameter of either pipe end to be connected by the coupling. There is a packing ring in the form of a resilient, extensible cylindrical member having a central portion and two end portions, the central portion extending over the outer wall of the cylindrical body and the end portions projecting beyond the open ends of the cylindrical body. The packing ring forms an outer casing for the insertion socket.

Abstract: A coupling which allows for linear or angular displacement as well as for expansion or contraction is comprised of two independent hubs adapted to be threaded on the ends of opposed spaced apart conduits, a flexible grounding strap connected between said hubs, a flexible watertight jacket substantially surrounding and clamped to said hubs at each end and a tubular raceway having flared ends moveably retained within each of said hubs to protect wires running through the coupling.

Abstract: There is provided a pipe coupling for plain-end relatively rigid pipe formed of spaced outer gripping zones of relatively soft material and containing biased continuous filament strands embedded therein, and an intermediate zone of tough hard material with discontinuous reinforcement embedded therein.

Abstract: Pressure suit mobility joints for use in interconnecting adjacent segments of an hermetically sealed spacesuit in which low torques, low leakage and a high degree of reliability are required. Each of the joints is a special-purpose joint characterized by substantially constant volume and low torque characteristics and includes linkages which restrain the joint from longitudinal distension and includes a flexible, substantially impermeable diaphragm of tubular configuration spanning the distance between pivotally supported annuli. The diaphragms of selected joints include rolling convolutions for balancing the joints, while various joints include wedge-shaped sections which enhance the range of motion for the joints.

Abstract: An adapter suitable for connecting a liquid measuring device to a variety of liquid containers of different size and shape without necessitating the use of different adapters. The adapter includes a sleeve portion which is fitted over the mouth and neck of the liquid container, there being affected a seal between the liquid container and the adapter. The opposite end of the adapter is attachable to the inlet of a liquid measuring device.

Abstract: Lengths of pipe are joined together in above- or below-ground telephone conduit systems by flexible sleeves having specified coefficient of friction, column expansibility and pull-out resistance and containing helically oriented high modulus reinforcement, bonded or encapsulated in elastomeric material. The resultant pipe assemblies represent a significant improvement over previously known cemented conduit-coupling arrangements. Pipe sections may be quickly and economically joined without field application of adhesive, to provide water-tight, pull-out-resistant joints which will accomodate significant bending moments and shearing forces.

Abstract: Lengths of "plain-end" pipe are joined together in underground sewer or drainage systems by flexible sleeves having a specified column expansibility and shear-resistance and containing high modulus helically oriented reinforcement, bonded or encapsulated in elastomeric material. The resultant pipe assemblies represent a significant improvement over previously known "plain-end" pipe-coupling arrangements and bell and spigot pipe assemblies. Pipe sections may be quickly and economically joined without inserting packing, to provide a water-tight, shear-resistant joint which will accomodate significant angular misalignment and circumferential variation. Even if lubricant is placed on the inner surfaces of the flexible sleeves to reduce assembly forces, the resultant pipe assemblies still exhibit more than adequate resistance against shear loads and water infiltration.

Abstract: An abrasion resisting flexible joint pipe is disclosed which is adapted to flexibly holding together opposed end tubes made of rigid material and transferring mud or sand removed as by dredging and comprises a pair of opposed end tubes, an elastic rubber body flexibly holding together the opposed end tubes and defined by a cylindrical inner rubber surface and a spherical shell-shaped outer rubber surface, and a spherical shell-shaped reinforcing layer embedded in the elastic rubber body. The abrasion resisting flexible joint pipe satisfies the condition given byl < 0.68dwhere l is the distance between the opposed end tubes and d is the inner diameter of the end tubes. Two embodiments of the joint pipe are provided. The corresponding outer rubber surface and reinforcing layer in these two embodiments are also spherical shell in shape, but the following conditions are further satisfied in order to improve the abrasion and pressure resisting properties of the joint pipe, respectively.

Abstract: Pipe connection for plastic pipes comprising two penetrating pipe parts and a receiving pipe part, which is provided with corrugations at each end. The radius of curvature or the height of the corrugations decrease from each end to the centre part of the receiving pipe part.