Abstract: A drainage system for location adjacent a pavement subbase includes a tube of a geotextile fabric supported by a self-sustaining water-porous plastic support. An end of the fabric tube and its encased support are compressively received in the flared open end of an outlet connected to a conventional drainpipe. The outlet includes a plurality of projections which trap the fabric tube between the support and the outlet, so as to securely retain it therein. The outlet also preferably includes a plurality of circular beads over which a corrugated drain tube can be frictionally slipped. Alternatively, the outlet can be configured as a flat union or T-shaped junction joining one or more upstream fabric tube-and-support filters with a downstream outlet constructed from an identical fabric tube and support. The downstream outlet can also be in the form of a union for connecting two or more upstream fabric tube-and-support filters in addition to having means for connecting to a drainpipe or the like.

Abstract: An aorto-coronary bypass graft comprising a plate portion and at least one tube portion extending from the plate portion, the opening in the tube portion communicating with a corresponding opening in the plate portion.

Abstract: Plastic, such as polyolefin, pipe having a locking integral end connection. The pipe is fabricated with male and female end connections in order that the pipe may be press-fitted together with the interior and exterior forming a flush uninterrupted surface. One or more radial ribs and grooves are formed on the interior of the female connection while a registering series of ribs and grooves are formed on the exterior of the male connection. The ribs and grooves are of an interfitting axially extending wedge shaped configuration to provide a locking engagement to resist any tendency for separation. Interfitting corners of the ribs and grooves may be rounded to distribute stress and minimize damage when the pipe ends are fitted together.

Abstract: Flexible convoluted tubing is made of an elastomeric material in desired lengths in which one end has convolutions with a configuration different from the convolutions at the other end. This enables the ends of each length to be interlocked in order to form a continuous closed hose. Alternatively separate lengths of tubing can be joined by interlocking one end of each length of tubing to the dissimilar end of another length of tubing.

Abstract: The present invention relates to a telescopic drinking straw or double sucking tube in which a synthetic resin tube section having a smaller diameter is inserted into a synthetic resin tube section having a larger diameter. In the sucking tube, a flange which is in tight contact with the inner surface of the larger tube section is formed on the smaller tube section, while a convex portion supporting the smaller tube section is formed on the inside of the larger tube section. Both the larger and smaller tube sections are produced from materials having different compositions from one another, so that leakage of fluid from a joint portion of the larger and smaller tube sections as well as shaky motion of the smaller tube section are prevented by these arrangements.

Abstract: A drainage system located adjacent a pavement subbase includes a tube of a geotextile fabric supported by a self-sustaining water-porous plastic support. An end of the fabric tube and its encased support are compressively received in the flared open end of an outlet connected to a conventional drainpipe. The outlet includes a plurality of projections which trap the fabric tube between the support and the outlet, so as to securely retain it therein. The outlet also preferably includes a plurality of circular beads over which the corrugated drain tube can be frictionally slipped. Alternatively, the outlet can be configured as a flat union of T-shaped junction joining one or more upstream fabric tube-and-support filters with a downstream outlet constructed from an identical fabric tube and support.

Abstract: Polyolefin pipe having an integral end connection. The pipe is fabricated with male and female end connections in order that the pipe may be press-fitted together with the interior and exterior forming a flush uniterrupted surface. One or more radial ribs and grooves are formed on the interior of the female connection while a registering series of ribs and grooves are formed on the exterior of the male connection. The ends of the pipe are bevelled in order that the ends pressed together engage and by the slight resiliency of the polyolefin pipe construction permit the slight expansion and contraction of the ends to provide a locking interfit of the respective ribs and grooves in the two ends. The wall thicknesses of the end connection and width of the ribs and grooves are particularly dimensioned in order that the male end may be inserted to a complete lock position without premature engagement and that should failure occur, it be at the readily observable pipe wall rather than in internal rib.

Abstract: The invention relates to a joint for connecting an elastically-deformable hose (14) and a rigid tube (22) having a smooth cylindrical outside surface. The tube (22) has a radial projection (26) on its outside surface which constitutes an abutment for the end of the hose (14) and also an anchor point for a clamping ring (28). The invention is applicable to mounting rubber hoses to rigid water inlet and outlet fittings on heat exchangers in motor vehicles, in particular.

Abstract: A two-stage type of freely elongatable sucking pipe comprising a larger-diameter pipe (e.g. for use as a drinking straw) member and a smaller-diameter pipe member inserted in the larger-diameter pipe member wherein the larger-diameter pipe member has a smaller diameter at the tip thereof to be brought into close contact with the outside surface of the smaller-diameter pipe member and/or the smaller-diameter pipe member has an expanded tip kept in close contact with the inside surface of the larger-diameter pipe member, the larger-diameter pipe member being made of a propylene type of polymer having a melt flow index of 7 to 14 g/10 min and stiffness of 10000 to 13000 kg/cm.sup.2, and the smaller-diameter pipe member being made of polypropylene homopolymer having a melt flow index of 7 to 14 g/10 min and stiffness of at least 13500 kg/cm.sup.2.

Abstract: A tap or valve comprising a first tube and a second tube with a flexible elastic coupling between said tubes to allow fluid passage between said tubes when said tubes are substantially coaxially aligned and to allow displacement of one of said tubes relative to the other in order to close said fluid passage. The tap or valve is primarily intended for use with wire drawings tubing or intravenous drip tubing. The tap or valve further comprises means for releasably locking the tap or valve in the closed position.

Abstract: A connector assembly for sterile connection of two internally sterile containers or tubings comprises two connectors (3, 4). The first connector (3) has a male part (5) inside a housing (6), a connecting device to connect the first connector to a first container or tubing (1), a first deformable barrier (7) spaced from the male part (5) and a chamber (8) between the male part (5) and the first barrier (7). The second connector (4) comprises a female part (9), a connecting device to connect the second connector to a second container or tubing (2) and a second deformable barrier (11) closing the female part (9). In connecting the connectors (3, 4) first both deformable barriers (7, 11) are brought into contact with each other after which the male part (5) of the first connector (3) is put through the second barrier (11) closing the female part (9) of the second connector (4).

Abstract: A hydrocyclone is provided with tapered surfaces at the perimeters of the accept head and the lower cone to effect a double taper seal when the head and cone sections are clamped together in assembled condition.

Abstract: Apparatus for continuously extending ventilating conduits in tunnelling or mining environments includes a tubular store to which a funnel guide is releasably connected. A folded flexible ventilating pipe is received on the store and fastening means are provided to connect an end of the ventilating pipe to the end of the ventilating conduit to be extended. In use, the apparatus is advanced and the ventilating pipe is gradually pulled off the store and unfolded by being passed over the funnel guide.

Abstract: A heat exchanger adapted particularly for use in embedded radiant heating systems wherein the tube ends are joined to the manifolds by the use of tube-stretching inserts.

Abstract: An improved connector arrangement for breathing circuit endotracheal tubes or the like in which one tube end is inserted into the other tube end. A secure connection is provided by means of a lug, groove and slot arrangement on the adjacent surfaces. When the tubes are moved axially together a lug protruding from one of the surfaces is engaged by a slot in the other and slides along the slot to a circumferential groove, thereby securing the two tubes together so that one can still be moved radially with respect to the other but not be disconnected by an inadvertent force exerted in an axial direction. A quick disconnect capability is provided by having the distance to the groove from the end of the tube along one side of the slot be less than that along the other side of the slot.

Abstract: Combined mould and sealing element suitable for sealing off a joint between a socket end and an insert end of two cooperating pipes formed from a thermoplastic material and for being used as a portion of a body of a mould for both fabricating said socket end of the one pipe and simultaneously inserting said element in an internal groove in the socket end produced thereby. The element consists of a main body of annular form composed of an elastically yielding material housing a reinforcing core of relatively non-elastic material capable of retaining its shape relative to the main body. The main body has a radial outer portion which in its active condition is adapted to abut the bottom of the internal groove and in its inactive condition projects outwardly as a flap. Between the flap and an inner and opposing portion of the main body there is formed an opening dimensioned to facilitate ready introduction and housing of the core.

Abstract: A quick detachable electrical connector is disclosed in which a resilient hood on the receptacle connector member surrounds the forward portion of the plug connector member. Lugs on the plug connector member snap into recesses in the hood to latch the connector members together. The hood is connected to the body of the receptacle member by longitudinally extending ribs. In one embodiment of the invention, the hood is circular and is rotated to ride up over the latching lugs to release the lugs from the recesses, thereby allowing the connector members to be disengaged. In a second embodiment, the hood is formed in the shape of a parallelogram, the short sides of which are squeezed to cause the hood to release from the latching lugs on the plug connector member.

Abstract: A versatile portable fluid dispensing, manually controlled gun with instant selectivity of hard, soft or foam flow of liquids, either of water or a solution, with or without entrainment of fluid such as air and with or without a foaming flow of the fluid whereby each of a great many different relations of discharge can be selected with a versatile solution discharge nozzle that provides selectively changeable liquid solid jet streams or soft flows of liquids with or without entrainment of a fluid such as air; and selectively with entrainment of air operable either with or without a foaming agent in the liquid. Instant controls interchangeably operated provide any one of twelve different dispensing relations with water alone or with a chemical foaming agent, each supplied separately or together as a mixture; in each of these phases, namely jet flow, soft flow and foam flow.

Abstract: A synthetic resin pipe joint having front and rear inclined walls defining a packing holding annular groove is provided with softness and elasticity sufficient to cause flattening deformation on impingement with a pipe contained therein, and expansion of a gap between this pipe and the inner circumferential face of the pipe joint is effectively prevented. On overall flattening deformation of the pipe joint, the front and rear inclined walls are similarly deformed and a packing contained therein is stably deformed with the deformation of the inclined walls without causing distortions in the packing. Because of such high elasticity and flexibility as not possessed by rigid joints, a pipe line can be effectively constructed by using this pipe joint.

Abstract: An improvement in an injection bulb device in an assembly for administration of parenteral solutions is disclosed. The device is a tubular elastomeric member having an enlarged intermediate section whose bore is larger than the bores in the two end sections. A plurality of flat-surfaced projections or rings extend inwardly from the walls of the bores in the end sections which compressively grip the end of a rigid needle adapter and flexible tubing inserted respectively within these end sections. The end of the tubing flares outwardly into the enlarged bore of the intermediate section and this configuration assists in increasing the strength of mechanical engagement between the tubing and the injection bulb.

Abstract: A stoma drainage appliance having a fluid collecting pouch constructed of sheets of flexible material with two internal sheets sealed together at spaced intervals to provide a valve across the center of the pouch precluding upward flow of fluid between the two internal sheets. There is at least one unsealed space between the seals located so as to provide a direct, straight path from an inlet opening of the upper section of the pouch to the lower section of the pouch. The stoma drainage appliance further includes an outlet spout connected at the lower section of the pouch. The spout has a tapered opening with an inlet neck section of oval cross-section and an outlet end section of circular cross-section. The spout is made of flexible material for clamping along the neck section to close the spout and includes a cap for attachment to the end section thereof.

Abstract: This invention relates to a gasket apparatus for providing a fluid tight seal between a pipe and a porthole in the wall of a manhole riser. The apparatus includes an elongated sleeve of elastomeric material, the sleeve having at one end an outwardly turned, reflexly curved annular flange. The body portion extends axially beyond the flange. A rigid reinforcing ring coaxially engages the inner surface of the flange, forming said flange to a predetermined outside diameter. This apparatus is inserted into the porthole in coaxial sealing relationship therewith. The flange is radially compressed between the ring and the wall of the porthole thereby providing a seal. The end of the pipe is received by the sleeve which is clamped at the distal end thereof onto the pipe to provide a further seal.The method of forming the seal includes inserting a solid, substantially rigid ring into the end portion of an elastomeric elongated sleeve which thereby determines the outer diameter of the sleeve radially opposite the ring.

Abstract: A portable solar heat tube comprising an outer flexible tubular member having high solar transmittance capabilities and a flexible insulating tubular member positioned within the outer tubular member. A flexible absorber tubular member is positioned within the insulation tubular member for converting the incoming sunlight into heat and transferring the heat to the air passing therethrough. One end of the absorber tubular member is connected to a source of air under pressure with the other end thereof being connected to the installation requiring heat. A modified form of the solar heat tube includes a flexible header positioned within the absorber tubular member. The flexible header has a diameter somewhat smaller than the absorber tubular member so that a space will be provided therebetween.

Abstract: A swivel type junction fitting for an endotracheal tube or the like formed of hollow cylindrical male and female members telescoped together, the female member having at one end a land surface and an adjacent annular groove together with an axially offset centering surface. The male member has at its tip an annular guide surface and a shallow annular ridge offset from the guide surface. The ridge has an interfering fit with respect to the land surface on the female member, and at least one of the members is molded or relatively soft resilient plastic so that when the members are pressed together the ridge clicks past the land surface and into permanent register with the groove with detent action, accompanied by movement of the guide surface into a position opposite the centering surface for relative swiveling of the members free of cocking or binding.

Abstract: A solvent-bonded joint between plastic members, and a method of making the same, particularly useful where such members are intended to convey flowable materials such as sterile medical solutions. The joint includes a pair of members joined at a zone of interference, a tapered crevice between the members, a solvent bond in the tapered crevice, and a series of spacers extending along the entrance to the crevice. The spacers or nubs are provided by one or both of the members and maintain the walls at the entrance of the crevice in uniformally-spaced and stressed condition to facilitate introduction of solvent and to insure proper bonding of the parts even where such parts are formed of flexible plastic material.

Abstract: A method is disclosed for the production of flexible pipes having a socket in which a socket element is fixed in overlapping relation to one end portion of a fabricated flexible pipe. The end portion of the pipe is elastically reduced in diameter and the socket element overlapped or telescoped with the reduced end portion. The socket element is then fixed to the reduced end portion of the pipe firmly under elastic stress when the reducing pressure is released. An elastic member may be interposed between the end portion of the pipe and the socket element at the overlap.

Abstract: Apparatus for separably coupling one end of a sample container to an open end of a sample gathering net comprises an annular body adapted to be secured to the one end of the container and removably telescoped within the open end of the net. An elastomeric retainer encircles the end of the net and the body member and is accommodated in an annular groove formed in the body member. An annular anchor member encircles the elastomeric retainer and applies a radially compressive force on the latter to clamp the open end of the net in the groove of the body member. The anchor member has an annular groove in which the retainer seats to latch the body and anchor members together, the groove in the anchor member being of less depth than that of the groove in the body member.

Abstract: A releasable tube coupling wherein the tube is releasably retained in the coupling body by means of a coil spring which embraces the outer cylindrical surface of the tube. In the relaxed condition, the spring has an inner diameter less than and frictionally engages the outer diameter of the tube. When an axial outward force is applied to the tube the spring tends to contract as it elongates and more firmly grips the tube. The spring is axially compressible to insert the tube in the fitting body and to release it therefrom.

Abstract: A connecting joint construction particularly suited for use on large diameter corrugated plastic pipe or tubing. The joint is comprised of a first main length of corrugated, generally cylindrical plastic pipe having one end portion provided with corrugations which, considered from the interior of the pipe, are somewhat smaller in height than the corrugations of the main body portion of the pipe. One of the smaller corrugations has at least one locking area therein defined between a stop member and a locking member and the smaller corrugations further include a plurality of sets of axially aligned grooves formed therein. A second main length of pipe is provided with a smooth walled end portion of a diameter less than the minimum internal diameter of the one end portion of the first pipe.

Abstract: A tubing adaptor of unitary plastics construction is assembled with an endotracheal or other medico-surgical tube for coupling the tube to a connector or tubing of larger diameter in a gas circuit. The adaptor has a tubular stem which closely fits into the tube and which extends from, and opens through, the base of the cup-shape body portion. The cup-shape body portion is for insertion in the passageway of larger diameter to establish the coupling, and the tubular stem is turned back on itself at its open end remote from the base so as to provide an external circumferential claw or lip that is splayed outwardly away from the open end so as to engage with the inside of the tube to restrain withdrawal of the stem from the tube. The claw may be formed by a step which involves the application of force uniformly around the whole circumference of the open end of the stem after that end has been splayed outwardly, against an inclined circumferential shoulder of a spigot.

Abstract: A joint is made between the ends of two similar lengths of flexible ducting. One end has a single ring and the other a pair of parallel rings. The single ring fits between the pair of rings. Either the single ring or the extreme ring of the pair of rings is of a larger diameter than the diameter of the ducting. The end of the ducting length with the larger ring is fitted inside the other ducting length.

Abstract: Two or more lengths of seamless tubing, for example artificial sausage casing are assembled by longitudinally aligning the end portions thereof overlapping and joined to each other by an adhesive strip band but for the time without internal communication therebetween. Internal communication between the lengths of tubing is established, for example, by introducing compressed gas into one tubing length remote from junction zone which causes this tubing length to take a cylindrical configuration moving its side walls (defined by its initially flattened shape) apart and thereby the side walls of the second joined tubing length are drawn with the corresponding side walls of the first tubing length by means of the adhesive strip band. As a result thereof the end portions of the side walls initially in contact with each other slide along each other and then out of contact in order to provide continuous internal communication in the tubular assembly.

Abstract: It is well known that food to be frozen, if placed in an evacuated container before it is frozen, will better retain the flavor and freshness of the food. However, there is no apparatus available and known to the applicant which permits evacuation of a container for food to be frozen in the home. The instant invention overcomes this deficiency by providing a system for evacuating flexible containers for food to be frozen in the home. The system includes a hollow retainer member adapted to receive the open end of the container, and a cap member which is adapted to fit over the outside surface of the retainer in airtight engagement therewith. A flexible tube extends downwardly through the bottom end of the cap member and upwardly above the cap member, and means are provided on the upward part of the tube for opening and closing the passage in the tube.

Abstract: A filter bag which includes an annular thin-walled band having a plurality of discrete resilient tabs extending from its outer surface along two axially separated paths. A flexible collar is secured to the outer surface of the band and conforms to the shape of the tabs to provide discrete protrusions along the two paths. The band and collar assembly is secured to one end of the filter bag. The end of the filter bag can snugly fit into a socket of a cooperating member, whereby a portion of the socket is positioned in the space between the two separated paths and is retained by the protrusions disposed on either side thereof. The retained portion of the socket includes an enclosed annular ring.

Abstract: A joint is made between two lengths of flexible ducting by captivating a flexible resilient ring attached to one end of a length of the ducting between a pair of spaced parallel rings attached to the end of the other length of the ducting. The joint can be made by deforming the flexible ring and passing it into the end of the second length of ducting and then releasing it, when it is in position, so that due to its resilience it assumes its natural shape and is positioned between the pair of rings.

Abstract: A clamp assembly for flexible duct of a type having a helically wound strip and a form-sustaining helically wound reinforcing member secured between lapping adjacent wraps of the strip. For reducing an end convolution of the duct, a one-piece spring wire clamp is provided having an operating arm and a lever arm connected in offset angular relation, opposite ends of the operating arm being mounted at opposite ends of an end convolution of the reinforcing member of the duct. The lever arm is movable into a closed clamped position engaging the end of the duct for effecting movement of the operating arm to contract the end convolution of the duct.

Abstract: Disclosed is a mechanism for allowing blood bags to communicate with each other comprising a connection pipe, a connection tube fitted into and bonded to said connection pipe, for connecting a first blood bag to a second blood bag, and a hard plastic-made communication pipe whose one end on the side of said first blood bag is hermetically sealed and the other end of which is fitted into and bonded to said connection tube and which is formed with a cutting-off small thickness section at its intermediate portion. The communication between said first and second blood bags is rendered effective by cutting off said communication pipe at said small thickness section.

Abstract: First and second sealed, sterile containers, having respectively communicating first and second fluid transfer tubes, the tubes having diaphragms occluding the bores thereof, may be connected together in sterile manner for the sterile transfer of the contents of one container to the other. To accomplish this, one point of a double-pointed, hollow spike is inserted into each of the bores of the fluid transfer tubes, at the free ends thereof, the spike being proportioned to tightly and sealingly fit into each bore of the fluid transfer tubes. Thereafter, the spike and that portion of the tubes extending from the diaphragms to the free ends thereof are sterilized. Then the points of the spike are moved to rupture the diaphragms, to open a flow channel, and the sterile contents are transferred. The fluid transfer tube of the container receiving the desired sterile contents is then resealed, prior to breaking sterility by opening the connection.

Abstract: A continuous tubular sleeve of knit fabric material, which is cylindrical in shape and, in the relaxed condition, of a diameter less than the diameter of the corrugated drainage pipe to which it is to be applied, is formed in lengths up to approximately 1,000 feet. In use, the tubular knit sleeve is cut to a desired length and slipped over one or more sections of corrugated flexible drainage pipe and acts as a filter to keep rocks, dirt, mud, pieces of clay, and the like from clogging the openings in the corrugated drainage pipe while allowing the water to pass through.

Abstract: A tubing connector having two couplings, each coupling including a central stub tube and a spaced, concentric housing. Each coupling is adapted to be placed on a tubing end with each stub tube in fluid communication therewith. The couplings join to form the connector while the stub tubes telescopically mate to provide fluid communication through the connector and the housings telescopically mate to isolate the mated stub tubes in a spaced enclosure. Each coupling is provided with a closure which includes a cap and a stopper. The stopper seals the stub tube while the cap telescopically mates with the housing to isolate the sealed stub tube in a spaced enclosure. The closures are dimensionally configurated to mate while the couplings are mated to form the connector.

Abstract: An apparatus for intestinal anastomosis is formed from a pair of anastomotic ring members, each of which is secured to the free end of two tubular tissue members to be anastomosed, and a coupling tube of special design adapted to join each ring member and its associated attached tissue member to the other ring member and attached tissue member. A method for performing intestinal anastomotic surgery utilizing the apparatus above wherein each tubular tissue member end is pulled over the outside and through the inside of one of the ring members and thereby inverted as it is secured to fenestrated projections on the ring member.

Abstract: A union device comprises a hollow body of synthetic plastic material having a sleeve with a bore the diameter of which is slightly less than that of a flexible tube which can be press-fitted in, pulled out from and tightly held in the bore without constricting its inner passageway. A slidable external locking ring may consolidate holding of the tube.

Abstract: A jumping hoop has a rigid U-shaped member which is held in the hand. A light flexible member is adjustably connected to opposite ends of the rigid member, forming a hoop. Ends of the rigid members are reentrantly bent to hold ends of the flexible member telescoped therewith. Ends are held together by an elastic band which jams between the sliding telescoping members in one construction.

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 safety device for use with Foley catheters and the like to prevent internal lacerations of the bladder neck and urethra which may occur as a result of accidental dislocation of such catheters. A coupler assembly is utilized to join the previously severed sections of the catheter. Several axially aligned slits are made in one severed section of the catheter to form a plurality of strips. One hollow tubular projection of the coupler is fitted into the opening of this section whereupon the strips of this section of the catheter are inserted into anchoring notches to lock the coupler thereto. The remaining portion of the catheter is force fitted into an oppositely directed hollow tubular projection. Thus the first catheter section which is placed within the bladder of a patient, is free to remain seated within the bladder with the remaining section of the catheter being adapted to be released from the coupler without pulling the anchored catheter section out of the bladder.

Abstract: A sectioned suction pipe, especially for a cleaning device, in which the pipe sections have plug and sleeve portions for telescopic engagement. Each plug portion has a radial protuberance receivable in a recess in the sleeve portion of the adjacent pipe section. Each sleeve portion has an axial incision along each side of the recess therein to impart resiliency thereto and a groove is formed inside each sleeve portion to guide the protuberance toward the recess.