Abstract: An inner tube element for a coring apparatus comprising a double tube, made of synthetic resin reinforced with fibers and provided at its ends with connecting nipples, is entirely made of synthetic resin and overlaps, at each of its ends, a part of the nipples having a rough surface gripped by said fibers, preferably in the form of webs of glass fibers.The inner tube element is manufactured by a process in which two nipples or couplings are placed onto a cylindrical mandrel having a constant section and rotating about its longitudinal axis, at a predetermined distance corresponding to the tube element to be manufactured, a part of said nipples having an inner diameter substantially identical to the diameter of the mandrel and having a rough surface, and fibers coated with a synthetic resin are wound helically onto said cylindrical mandrel, so as to overlap the rough part of said nipples.

Abstract: A hose joint, for mainly used in a vehicle for taking out negative pressure from the intake manifold, provided with a hose attaching portion, a threadedly attachable portion, and a cooling portion with at least one cooling fin for radiating heat from a heat source such as the intake manifold, so as to protect a hose attached to the hose attaching portion from heat damage. The cooling fin or fins can be variously designed within the purpose of radiating the heat from the heat source not to reach at an unpermissible high temperature to the hose.

Abstract: Apparatus for connecting flex duct to a sheet metal collar wherein piercing members are connected to the sheet metal collar. The piercing members are located adjacent one end of the sheet metal collar with the end of the piercing member next adjacent the end of the collar connected to the collar. The piercing members have an apical end that is oppositely disposed from the end connected to the sheet metal collar such that, when the flex duct is forced over the piercing member and then drawn in the opposite direction, the apical end pierces the scrim of the flex duct and the piercing member entraps the wire helix to secure the collar to the flex duct.

Abstract: A hose end construction comprising a hose main body and a connection metal fitting secured to the end portion of said hose main body by means of a clamping ring and a ferrule circumferentially tightening the end portion of said hose main body to said connection metal fitting.

Abstract: A self-tapping coupling for plastic piping has a hollow cylindrical section with external self-tapping threads and a sealing member with an O-ring whereby the sealing member is retained in the end of the plastic pipe by the threads cut by the cylindrical section when the latter is inserted in the end of the pipe with rotation.

Abstract: An adapter for connecting a plastic pipe system to a metallic pipe system; including an elongated, plastic sleeve having a first end thereof adapted to be joined to a plastic pipe system and a second end thereof adapted to be joined to a metallic pipe system and an elongated, metallic reinforcing sleeve, having an outside diameter substantially equal to the inside diameter of the second end of the plastic sleeve, a length less than the length of the plastic sleeve and a significant portion of one end tapered from the diametric exterior thereof inwardly and toward the one end thereof, mounted in the second end of the plastic sleeve with its tapered end toward the interior of the plastic sleeve. A pipeline structure including the adapter joined at one end to a plastic pipe system and the other end joined to a metallic pipe system is also described.

Abstract: A gas riser apparatus for conducting gas from a souce of supply to a delivery point such as a meter or the like. The gas riser apparatus is defined by a plastic pipe and a metal pipe which are interconnected within the body of the apparatus by means of a metal-to-plastic pipe joint. The pipe joint includes a reinforcing metal stiffener sleeve and a nonmetallic outer sleeve tightly surrounding the metal pipe and the plastic pipe.

Abstract: This invention relates to flexible hoses having a rubber body and a flange at each end thereof. The rubber body is strengthened by a reinforcement comprising continuous metal elements extending from one flange to the other and whose ohmic resistance from flange to flange needs to be high. The surfaces, of said flanges situated facing the metal elements of the reinforcement are covered with an insulating layer formed from a glass cloth having high mechanical strength and high electrical resistance and from a firm binder of high electrical resistance comprising an epoxy resin, the insulating layer adhering to the metal surfaces of the flanges and to the rubber body of the hose. The layer of glass cloth preferably consists of a plurality of plies which are superimposed and having filaments whose respective axes are at an angle of 45.degree..

Abstract: A telescoping drain line for connecting recreational vehicles to a sewage system has telescoping rigid wall drain pipes having a plurality of pipe sections telescoping one within the other. A flexible hose extends through the telescoping pipes and out each end thereof and has means for attaching to a recreational vehicle drain at one end and into a sewage line opening at the opposite end thereof. The flexible hose is attached at each end of the telescoping rigid wall drain pipe to prevent the flexible pipe from collapsing or coming out of the rigid pipes. The flexible pipe will fold within the telescoping pipe for storage of the drain line.

Abstract: A preferred embodiment of the anastomosis device comprises a cylindrical, radially resilient spring upon which is attached a number of outwardly extending barbs. The radial spring action significantly simplifies the anastomosis procedure and in addition allows the mended portion of the blood vessel to pulsate in a fashion similar to that of the pulsatile action of an unmended vessel. The barbs attach the device to the blood vessel thus maintaining its position securely. The disclosed anastomosis device is recommended for rejoining small blood vessels where a simple, reliable alternative to micro-suturing techniques is desirable. In the anastomosis method of the present invention a cylindrical, radially resilient spring is compressed and placed about one end of a vessel. The second end of the vessel is then placed about the spring and the compression is released.

Abstract: A tubular fiber reinforced composite shaft is formed (as described) which integrally incorporates a metal sleeve or connection at the end thereof. Initially a metal sleeve having circumferentially spaced recesses on the outer periphery thereof is positioned upon a segment of a mandrel. Fibrous material bearing a non-solidified resinous material is applied around the mandrel and around the recesses in the sleeve. Portions of the previously applied fibrous material bearing the non-solidified resinous material are pressed into the recesses. Additional fibrous material bearing the non-solidified resinous material is applied to the previously applied fibrous material. The resinous material next is solidified to form a tubular composite shaft whereby a secure torsion-transmitting connection is made with the sleeve, and the mandrel is removed.

Abstract: A pipe fitting is formed of a flexible body having a threaded coupling section at one end thereof. The coupling section has a portion integrally formed with the flexible body. A rigid shape-retaining portion is juxtaposed with the coupling section for enabling the coupling section dimensions to remain relatively constant when a member is secured to a threaded portion of the coupling section.

Abstract: A connection for securing one end of a helically convoluted suction hose to a hose fitting such as is used to effect rapid engagement of the hose with or disengagement thereof from the suction inlet of a vacuum cleaner. The fitting includes a tubular portion having external threads of the same pitch as the unstressed convolutions of the hose so that the tubular portion can be threaded into the end of the hose. The cross sectional configuration of the threads is such as to resist relative rotation between the fitting and the end of the hose when the threads are engaged with the hose convolutions. Additional resistance to relative rotation between the fitting and end of the hose is provided by a collar at the inner end of the tubular portion, the collar serving as an abutment to cause compression and a reduction in the pitch of the convolutions of the hose between the threads and collar with continued threading of the fitting into the end of the hose after the end edge of the hose has engaged the collar.

Abstract: A hose structure which is useful as a transitional piece for a connection between two elements of different diameters. The hose has a tapered bore with an oppositely tapered sleeve of deformable material outwardly of the sleeve interior to form a substantially cylindrical outer surface over which the remaining portions of the hose structure are applied. If desired, buoyancy material can be included in the hose structure so that the hose will be buoyant and float in water. The method includes applying an elastomeric liner around a tapered mandrel, applying the tapered layer of deformable material to form a cylindrical outer surface, applying at least one reinforcing layer to the cylindrical surface, applying a cover over the reinforcing layer then vulcanizing the structure to form an integral unit.

Abstract: A housing includes a plastic member having a central opening, and a reinforcing element of wholly rigid and imperforate material in the form of a hollow sleeve imbedded within the member. This sleeve is coincident with the opening and has an outer end flush with an outer end of the member. A first inner wall portion of the sleeve adjacent such one end has a diameter equal to the diameter of the central opening, and this first inner wall portion being threaded for engagement with a threaded object to be connected to the housing. The sleeve has a second inner wall portion of a diameter greater than the diameter of the opening so as to define an annular space which is occupied by a portion of the plastic member.

Abstract: A pair of concentric hoses of flexible elastomeric material are spaced radially apart to define an annular space around the inner hose. Both hoses are secured at each of their ends to a common connector ring for securing successive lengths of the double hose together. Passages through the connector rings provide communication between the annular spaces.

Abstract: A detachable pipette tip member that may be "snapped" onto an adapter cone portion of a pipette body. The wall portion of the tip member engagable by the adapter cone defines a deformable conical sealing zone with yieldable characteristics obtained by a selective reduction of the wall thickness of the tip member in the sealing zone.

Abstract: A resilient sprinkler riser is described for mounting a pulsating type sprinkler head wherein a nozzle is utilized to direct a spray jet of water in a radial direction from a vertical axis of rotation while a pivoted deflector member operates to rotate the nozzle about the vertical axis. The riser includes a flexible tube that is coaxially mounted within an elongated closed helical tension spring. The spring is fastened at its lower end relative to the tube while its upper end is free to slide coaxially over the tube length. The spring is pretensioned to hold the pipe in an upright condition under the reaction forces exerted by a jet of water exiting through the sprinkler nozzle. However, the spring tension is not sufficient to hold the tube in an upright condition when excessive external lateral forces are applied. When this happens, the riser will deflect in the direction of the force. When the force is removed, the riser will spring back to a normal upright condition.

Abstract: An improved arrangement for releasably connecting an end of a tubular gas filter bag to an aperture in an apertured plenum chamber plate member including a mounting member mounted in the aperture in the plate member for releasable engagement with the end of the bag. The mounting member includes an inwardly extending ledge located between an outwardly extending flange which engages the end of the bag and an inwardly extending seat which rests upon the periphery of the aperture. The ledge enables easy mounting of the bag end, which contains an expansible slip ring, over the flange.

Abstract: A pipe joint between a pipe of reinforced plastic and a second pipe, which may be metal or plastic, and which may have a peripheral shoulder with the plastic material of the first pipe overlapping and interlocking with the shoulder.

Abstract: A hose construction comprising a core tube of either synthetic rubber or plasticized polyvinyl chloride plastic, a braided non-metallic fibrous reinforcement over the core tube, and an outer cover of either synthetic rubber or plasticized polyvinyl chloride plastic when the core tube is of polyvinyl chloride plastic, or the cover is plasticized polyvinyl chloride plastic when the core tube is synthetic rubber. The hose is particularly suited for use with barbed hose couplings insertable into the hose wherein the hose is held on to the coupling by contractive force of the hose on the barbs without the use of external clamps or gripping members on the hose.

Abstract: A coupling member for building into the end portion of a hose. The coupling member includes a portion which extends into the bore of the hose body and has one or more annular protuberances extending around the exterior surface. At least one notch extending into one of the protuberances provides a seal to prevent the flow of the fluid passing through the hose from leaking between the outer surface of the coupling member and the hose bore.

Abstract: A fuel injection nozzle arrangement for an internal combustion engine includes a nozzle holder, a hose which serves as a fuel supply conduit and a tubular socket. The tubular socket is preferably fixedly connected to the nozzle holder. A connection means is provided between the nozzle holder and the hose. The connection means includes an affixable hose nipple. A sealing means, preferably an O-ring, is positioned between a surface of the hose nipple and an opposing surface, which is preferably a surface of the tubular socket. At least one hose coupling member is associated with the affixable hose nipple. Two coupling members are preferably associated with the hose nipple.