Abstract: A corrugated pipe adapter for providing a sealing surface on a corrugated pipe includes a generally cylindrical sleeve having a generally smooth outer clamping surface and at least one protrusion. The protrusions include side walls and an arched structure between the side walls. The protrusions extend from an inside of the generally cylindrical sleeve. The side walls move outwardly against the corrugations on the corrugated pipe when pressure is applied to the generally smooth outer clamping surface.

Abstract: A hose clamp is provided for establishing a reliable, fluid-tight, seal between a hose and a receptacle therefore or to another length of hose. The clamp includes a plurality of clamp segments and a span ring, e.g., a spiral wound ring. Each clamp segment includes an arcuate interior surface having a span ring slot therein which is positioned to align with a corresponding span ring slot in an adjacent clamp segment. The span ring has a portion disposed in each span ring slot with the interior surface the span ring approximately flush with the interior surfaces of the segments. Each clamp segment further includes a bore on a first end thereof which is adapted to align with a corresponding bore on an end of an adjacent segment. A fastener, e.g., a screw, may be inserted into the bores to draw the ends of the clamp segments toward each other, thereby tightening the segments of the clamp around the hose and receptacle.

Abstract: The present invention relates to a pipe coupling for connection to a pipe end of a pipe made of polymer material and intended preferably for tap water or heating installations. The pipe coupling includes an inner sleeve intended for insertion into the pipe end and for abutment with the inner surface of said pipe end. The coupling further includes an outer sleeve intended for abutment with the outer surface of said pipe end. The outer sleeve is provided with a slot-like opening and means for adjusting the width of said opening. When the outer sleeve is in a tightened, adjusted state, the sleeve will be internally and externally cylindrical. A center axis through the outer cylindrical surface of the outer sleeve is spaced at a distance from a center axis through the inner cylindrical surface of the outer sleeve. In the tightened, adjusted state of the outer sleeve, the internal radius of said sleeve is smaller than the external radius of said pipe end.

Abstract: A vapor vent hose is adapted to be assembled to a nipple. The nipple has a first end, an outside diameter and a barb. The barb has a tapered first end adjacent the end of the nipple and a second end with a substantially radially extending face. The hose and nipple are provided in a fuel vapor system. The hose has a first end with an inside diameter fitting over the nipple. The first end has a cuff axially spaced from the end of the hose. The cuff is substantially undeformed radially after installation over the barb.

Abstract: An end-slotted flexible metal hose includes a hose section with body and end sections and a hose clamp. The hose section forms a bore therethrough having a relatively constant diameter. The end section includes a plurality of slots which extend through a sidewall of the hose section to the bore and permit the end section to be constricted by the hose clamp to reduce the bore diameter to provide a relatively tight engagement with a tube on which the hose assembly is mounted.

Abstract: A fitting for holding and connecting steel pipes comprising: a holder and a coupler which are axially supported with each other at one end with a pin, a bolt which is inserted into a through hole provided at the other end of the coupler, and a cap nut which is provided inside the other end of the holder and into which the bolt is tightened, thereby holding a steel pipe. It is desirable for the cap nut to be fixed to the holder or for the through hole to be an unloaded hole. By so arranging, the steel pipe does not slide off from the tightening fitting, and in case of damage to the bolt, only the damaged bolt may be simply replaced with a new one, thereby making it possible to use the device for a long period of time. Moreover, since the screw portion of the bolt does not protrude, the clothes or body of the worker or passing person are not caught by a projecting end of the device so as to cause the clothes to be ripped or the body to be hurt.

Abstract: A hose clamp having a self-threading hardened screw extending through outwardly extending tabs on the generally circular clamp, the head end of the screw fitting through a clearance opening in the first tab, and the screw threadably engaged with the second tab, the first tab being reinforced against bending by a deformation dimple at the juncture to the circular band, and the second tab being bendable upon screw tightening to cause the screw angle to change sufficiently for the screw threads to cut slots in the band, forming a worm-type drive engagement.

Abstract: A clamp member comprises a shaped belt of spring sheet curled in a ring form with a pair of end leaves crossing each other in a circumferential direction of the ring form. One end leaf is bent in a radial direction of the ring form to provide a grip formed with a tip part configured with a top edge extending substantially in an axial direction of the ring form. The other leaf is bent in another radial direction of the ring form to provide another grip formed with a tip part configured with a top edge extending substantially in the axial direction. The top edge of this latter grip has a raised portion raised toward the other grip. A holder holds the two tip parts close together to enlarge the ring form, and comprises a top wall, and a pair of side walls each formed with a stopper to abut on a top end face of an axially extending portion of a corresponding top edge. The raised portion of the grip facilitates removing the holder with the use of a tool.

Abstract: A hose coupling assembly utilizes first and second hose collar halves interacting with a barbed connector for mounting to a PVC spiral hose with screws. The collar halves are identical and may be molded from flexible plastic material for ease of attachment to the spiral hose.

Abstract: A sewage removal system 10 is provided for quickly, securely and sanitarily connecting the onboard holding tank H of a typical recreational vehicle or travel trailer to an in-ground stationary waste disposal site S. The system 10 includes two hoses 20, 21 which may be coupled via a union 50 to provide hoses 20, 21 of greater combined length to reach the site S when located too far for a single hose 20, 21. The hoses 20, 21 include quick connect couplings 30 secured to each end 22. Locking hooks 40 extend from the annular rims 39 of the couplings 30 to provide a means for securely engaging protrusions 56, 66 to create a sealed joint. The system 10 includes two elbow adapters 60 to allow simple connection to an inlet tube T of the stationary waste disposal site S. The first elbow adapter 60 includes a male threaded connector 70 for coupling with a female threaded fitting F of the inlet tube T.

Abstract: A hose clamp having a self-threading hardened screw extending through tabs on the clamp, the head end of the screw fitting through a clearance opening in the first tab, and the screw threadably engaged with the second tab, the second tab being bendable upon screw tightening to cause the screw angle to change sufficiently for the screw threads to cut slots in the band, forming a worm-type drive engagement.

Abstract: In a pipe jointure for joining pipe sections, particularly of exhaust systems of motor vehicles including a clamp having opposite leg portions with clamping surfaces for enclosing and firmly engaging adjacent ends of the pipe sections, at least one of the leg portions has radially inwardly and axially outwardly directed tabs extending therefrom in circumferentially spaced relationship for retaining and guiding the adjacent pipe sections while the clamp is mounted and tightened by compressing bolts.

Abstract: An anti-rotation device to be mounted on standard glad hands for rail cars for preventing unintended uncoupling of coupled glad hands. The device comprises a band assembly and a wire form. The band assembly is generally comparable to a hose clamp. As disclosed, the band assembly includes orienting features so that it will be circumferentially and axially oriented in an optimum position wherein damage to the band assembly due to a glad hand whipping against a car coupler upon uncoupling is minimized.

Abstract: A hose fitting assembly which includes a relatively rigid tubular element, an outer sleeve or element defining with a tail of the element an annular chamber for receiving an end part of the hose, a thrust mechanism for compressing the hose axially into contact with the tail, a mechanism locking the outer sleeve to the inner element and a thrust member for completing the fastening.

Abstract: A band body is covered at a distal end thereof with a cap resulting in safety of a hose fastening band being enhanced. The cap is either molded or mechanically attached to the distal end of the band so the sharp edges are not exposed.

Abstract: The invention concerns an improved hose clamp consisting of an outer annular tightening band (1) which is provided with a tightening device (3, 4), and of a resilient band (2) which extends along the inner face of the tightening band (1). The resilient band is provided with two axially spaced, inwardly directed peripheral beads (6) which extend around the resilient band (2). Intermediate the beads (6) the resilient band (2) is formed with an outwardly directed ridge (7) in abutment against the inner face of the tightening band (1). By means of a number of openings (8), the ridge (7) is divided into a number of bridges (9) which interconnect the beads (6) with one another around the resilient band (2). These bridges (9) are arranged to allow bead movability in the radial as well as axial directions.

Abstract: A hose/clamp assembly is provided wherein the hose is provided with a protrusion which engages with a slot in the clamp. Further provisions allow for the orientation of the clamp on the hose to facilitate assembly onto motor vehicles.

Abstract: A hose construction and method of making the same are provided, the hose construction comprising a tubular flexible hose having opposite ends, fastening structure and a clamp fastened to one of the opposite ends of the hose by the fastening structure for substantially circumferentially and radially inwardly clamping the one of the opposite ends of the hose onto a member that has been inserted into the one of the opposite ends of the hose, the fastening structure comprising a tubular arrangement of elastic material disposed in stretched relation over and against part of the clamp and having opposite annular side sections, one of the side sections of the fastening structure having a part thereof disposed outboard of the clamp and having been secured against the one of the opposite ends of the hose to hold the clamp thereon in a predetermined rotational and axial position relative thereto.

Abstract: A sealing system for sealing a hose to a barb coupling, the hose and barb coupling defining a joint having a high pressure portion associated with the barbed portion of the coupling, and a low pressure portion associated with the barbless portion of the coupling, the system comprising a constant displacement clamping portion for mounting on the portion of the hose positioned over the high pressure portion, and a constant tension clamping portion for mounting on the portion of the hose positioned over the low pressure portion.

Abstract: A hose construction and method of making the same are provided, the hose construction comprising a tubular flexible hose having opposite ends, fastening structure and a clamp fastened to one of the opposite ends of the hose by the fastening structure for substantially circumferentially and radially inwardly clamping the one of the opposite ends of the hose onto a member that has been inserted into the one of the opposite ends of the hose, the fastening structure comprising a tubular arrangement of elastic material disposed in stretched relation over and against part of the clamp and having opposite annular side sections, one of the side sections of the fastening structure having a part thereof disposed outboard of the clamp and having been secured against the one of the opposite ends of the hose to hold the clamp thereon in a predetermined rotational and axial position relative thereto.

Abstract: An apparatus for attaching and securing a drain hose to the adapter used with a recreational vehicle ("RV") waste drain assembly or, at the opposite end of the hose, to a sewer fitting used in conjunction with a septic tank or some other type of in or above ground sewer system for receiving drained waste matter. The apparatus comprises a retaining ring, which may include an annular flange formed along one edge, slidably mountable inside the opening at one end of a RV drain hose, for retaining the shape and requisite diameter dimension of the end section of the hose to facilitate its engagement with the adapter or the sewer fitting when those connections are made. The ring is removed before the adapter or the sewer fitting engages the hose opening to enable the hose to contract and form a tight seal with those components.

Abstract: A hose construction, fastening member therefor and methods of making the same are provided, the hose construction comprising a tubular flexible hose having opposite ends and an outer peripheral surface, a fastening member, and a clamping unit fastened to one of the ends of the hose with the fastening member for substantially circumferentially and radially inwardly clamping the one end onto a member that has been inserted into the one end, the fastening member having a part thereof secured to the outer peripheral surface of the hose and having a recess therein that receives part of the clamping unit therein, the fastening member having snap-fit structure for holding the part of the clamping unit in the recess thereof before the fastening member is secured to the hose.

Abstract: A hose construction and method of making the same are provided, the hose construction comprising a tubular flexible hose having opposite ends, fastening structure, and a clamp fastened to one of the opposite ends of the hose by the fastening structure for substantially circumferentially and radially inwardly clamping the one of the opposite ends of the hose onto a member that has been inserted into the one of the opposite ends of the hose, the fastening structure comprising a tube of heat shrinkable material disposed over and against part of the clamp and having opposite annular side sections respectively disposed outboard of the clamp and having been heat shrunk to circumferentially and radially inwardly engage against the one of the opposite ends of the hose to hold the clamp thereon.

Abstract: An adjustable stabilizer clamp for securing a connection between a push-on pipe fitting and a pipe used in fluid lines. The clamp has a stainless steel stabilizer bar that has a fitted groove for receiving a donut or a cage of a pipe. The stabilizer bar has two circle clamps located at each arm of the stabilizer bar for support. The circle clamps are radially secured onto the pipe. Thus, the clamp prevents pipe movement, pipe vibrations, or high line pressures from causing the push-on pipe fitting from failing and leaking dangerous CFC's into the ozone.

Abstract: A clamp for hoses, pipes and the like which incorporates an open diameter lock for maintaining the clamp at a selected diameter despite shipping and other stresses, and for preventing the clamp from opening-up beyond the "full-open" diameter. The open diameter lock of the present invention will not interfere with further tightening of the clamp, and it serves to give a visual gauge of the nominal open diameter of the clamp.

Abstract: A coupling and method of coupling of a self-aligning self-tightening nature is obtained by providing a nipple with a hose receiving end and a coupling end. An annular hose abutment flange directed outwardly is formed on the nipple remote from the hose receiving end. An annular pressure ramp is formed on the nipple intermediate the hose receiving end and the hose abutment flange. A plurality of grip segments having a hose receiving end and a coupling end are provided with at least one annular node and an inwardly directed alignment flange. A hose is slid over the hose receiving end of the nipple toward the abutment flange, and the grip segments are placed over the hose with the inwardly directed annular alignment flange located between the outward abutment flange and the coupling end of the nipple. The grip segments are tightened on the hose and nipple, thus forcing the grip segments toward the coupling end by squeezing the hose between the ramp and the node.

Abstract: A hose construction, fastening member therefor and methods of making the same are provided, the hose construction comprising a tubular flexible hose having opposite ends and an outer peripheral surface, a fastening member, and a clamping unit fastened to one of the ends of the hose with the fastening member for substantially circumferentially and radially inwardly clamping the one end onto a member that has been inserted into the one end, the fastening member having a part thereof secured to the outer peripheral surface of the hose and having a recess therein that receives part of the clamping unit therein, the fastening member having snap-fit structure for holding the part of the clamping unit in the recess thereof before the fastening member is secured to the hose.

Abstract: A cuff type air seal for sealing the overlap of partly telescoped parts that has an annular body of rubber or elastomer material having annular internal air sealing beads thereon which are adapted to fit on outer peripheral surfaces of the parts adjacent their overlap. Both parts have fixed outer diameters but the outer part may be a blow molded annular component having an internal diameter which varies so usually there is clearance and a potential air leak path at the overlap. An adjustable clamp encompasses the air seal and provides a constricting force so that the air sealing beads seal on the outer surfaces of the parts even though the clearance remains. The cuff is formed with a pocket that receives and retains a headed portion of the blow molded part when telescoped over the facing headed portion of the first part, particularly when the clamp is constricted.

Abstract: A hose construction, fastening member therefor and methods of making the same are provided, the hose construction comprising a tubular flexible hose having opposite ends and an outer peripheral surface, a fastening member, and a clamping unit fastened to one of the ends of the hose with the fastening member for substantially circumferentially and radially inwardly clamping the one end onto a member that has been inserted into the one end, the fastening member having a part thereof secured to the outer peripheral surface of the hose and having a recess therein that receives part of the clamping unit therein, the fastening member having snap-fit structure for holding the part of the clamping unit in the recess thereof before the fastening member is secured to the hose.

Abstract: A gasket adapter for providing a sealing surface on a ribbed conduit is disclosed. The adapter is fabricated from an elastomeric material and includes a smooth, cylindrical outer surface adapter to mate with a conventional gasket employed between an opening and a conduit, or between aligned conduits. The inner surface of the adapter comprises a series of peaks and valleys which are adapted to nest with the peaks and valleys of a conduit surface. The adapter is initially fabricated with its cylindrical surface as its inside surface so that the adapter may be installed on the ribbed conduit and then inverted to provide the smooth outer sealing surface.

Abstract: A fitting is described for connecting an elastic hose (152) to a system through which a fluid is transmitted. The fitting, based on common barbed fittings, has an angled conical surface (8) which forms a smoothly curved line as the boundary between the surface and the base of the barb. As an integral way to resist rotation of hose (152), which engages hose (152) on its inner surface, one emboidment of the present device is designed with ribs (6) on conical surface (8), while another embodiment maintains such features (designated as 125) on stem (11) of the fitting. The anti-rotation feature is designed in such a way as to minimize any tendency of the anti-rotating feature to diminish the sealing properties of barb (2 or 121). Such a goal naturally is accomplished through physical parameters of the ribbed protrusions, such as height, shape, and length.

Abstract: A device is disclosed for hermetically coupling two smooth tubes of the same diameter disposed end to end, particularly for coupling two elements of the exhaust pipe of an engine, such as those of automobile vehicles. A bush in one piece comprises a longitudinal slot provided with two radial assembly lips and surrounds the opposite ends of the two tubes on which it is clamped by a screw or a bolt traversing the radial lips. The bush presents two frusto-conical ends located on either side of a cylindrical central portion intended to be mounted astride the zone of connection of the two tubes and each lip of the longitudinal slot comprises at least one rigidifying element extending between said lip and each of the corresponding frusto-conical ends of the bush.

Abstract: A metallic or plastic nipple which has an annular external recess adjacent a circumferentially complete annular retaining rib can be separably connected to an end portion of a flexible hose by a coupling employing a sleeve having a tubular section which is receivable in the end portion of the hose. The sleeve is further provided with a set of elastic prongs which slope toward the axis of the sleeve and extend into the recess adjacent the retaining rib when the nipple is inserted into the sleeve. A permanently deformable or repeatedly expansible and contractible discrete clamping member is applied around the end portion of the hose to maintain such end portion in sealing engagement with the tubular section of the sleeve. The prongs can be integral with the tubular section or with a second section of the sleeve. The second section is form-lockingly or otherwise affixed to the tubular section.

Abstract: A fitting is described for connecting an elastic hose (152) to a system through which a fluid is transmitted. The fitting, based on common barbed fittings, has a non-circular or angled conical surface which forms a smoothly curved line as the boundary between the conically-shaped surface and the base of the barb. This serves as an integral way to resist rotation of hose (152), which engages hose (152) on its inner surface. The anti-rotation feature is designed in such a way as to minimize any tendency of the anti-rotating feature to diminish the sealing properties of the barb.

Abstract: An air flow conduit system is presented for air flow communication between an air filter mechanism and an engine intake manifold. The conduit system comprises first, second and third substantially rigid conduit members. Engagement between conduit members is provided by a rib system on a narrow end of a conduit member being received within a broad end of a next adjacent conduit member. Sealing engagement occurs by an elastomeric seal member positioned between the ribs and an end of a conduit member within which the ribs are received. A preferred rib arrangement is provided, to insure a flexible, multi-point, seal system.

Abstract: A welding seal assembly for use in joining and sealing two telescoped tubular elements in a lap joint, specifically a tubular pipe in a pipe socket formed in a pipe fitting. The seal assembly comprises a thermoplastic welding sleeve with an embedded electric heating coil for fitting between the pipe and the socket; a mounting collar including a ring-like body that is fitted over the pipe and against the end of the socket element with a thin-walled, compressible flange extending from the body over the outer side of the socket element and overlying the overlapped elements of the joint; an electrical connector in a radially projecting tab on the ring, including electrical contacts connected to the leads of the heating coil; and a clamp ring surrounding the compressible flange and held captive thereon between the tab on the body and detents on the flange.

Abstract: An elongated flexible metal channel is adapted to surround a pair of engaging overlapped inner and outer cylindrical member with opposite ends of the channel overlapping one another to provide an adjustable clamp for the cylindrical members. Spaced opposed looped anchor strips overlay the respective ends and adjacent intermediate portions of the channel. Each anchor strip, which is secured to the adjacent intermediate portion, loosely engages one channel end. Adjustable fasteners interconnect the anchor strips to variably draw up the intermediate portions while extending the overlap of the channel ends.

Abstract: An air flow conduit system is presented for air flow communication between an air filter mechanism and an engine intake manifold. The conduit system comprises first, second and third substantially rigid conduit members. Engagement between conduit members is provided by means of a rib system on a narrow end of a conduit member being received within a broad end of a next adjacent conduit member. Sealing engagement occurs by means of an elastomeric seal member positioned between the ribs and an end of a conduit member within which the ribs are received. A preferred rib arrangement is provided, to insure a flexible, multi-point, seal system.

Abstract: A blower comprises a unit blower housing of molded plastic material having a circular outer wall and laterally spaced front and rear walls, defining an impeller chamber and a tangential outlet upon a first axis adapted to receive a flexible hose. The outlet defines with an end portion of the outer wall a reverse curved cut off edge extending between the side walls. An opening in the front wall is arranged upon a second axis at right angles to the first axis and receives an air inlet cone secured to the housing by a plurality of threaded inserts molded into the housing. An electric motor upon a support has a drive shaft extending through the rear wall. The rear wall is mounted upon and secured to the motor and an impeller is positioned within the housing and axially mounted upon the motor shaft and has an air intake receiving the air inlet cone.

Abstract: A safety retainer clip for use on pressure hose fittings that provides a secondary retaining device to prevent the unintentional separation of the fitting and the hose during use in high pressure applications evident in sandblasting or the like.

Abstract: A dump fitting on the discharge end of a sewer hose leading from the waste holding tank of a recreational vehicle prevents the hose from jumping out of a sewer drain under the influence of effluent being discharged through the hose. The fitting is in the form of an elbow with one limb received in the discharge end of the sewer hose and the other limb forming an outlet for receipt in the sewer drain. The fitting is of sufficient weight to resist the thrust of effluent flowing through the hose and tending to lift its discharge end. The fitting may be a one-part plastic molding or a two-part fit-together molding.

Abstract: In a clamping sleeve for pipes, which consists of a rubber-elastic sealing ring and a clamping ring (2) encircling the sealing ring, on the ends of which clamping ring (2) are attached parts (4, 5) having clamping plates directed outward and located opposite one another, the gap between the clamping plates is bridged by a sheet-metal part which sits against the outer side of the clamping ring and, like the clamping ring (2) itself also has edges which are bent radially inward and, at the overlapping point with the end of the clamping ring (2), fit between the bent edges of the clamping ring. The sheet-metal part (15) is formed by an end section of the clamping ring (2) which has a longitudinal slot (18) which extends up to its end and, in turn opens at its inner end into a transverse slot (19).

Abstract: The invention relates to a connecting part between a rigid mechanical element and a hose in which a fluid at high pressure travels. The connecting part has a hollow tubular part B enlarged at one end into a head (1) and driven into a hose A, an internal locking pipe C in the hollow tubular part B, and a clamp D.

Abstract: A flexible corrugated hose coupling apparatus is provided for coupling a corrugated hose to a cylindrical neck or sleeve. A resilient hollow cylindrical coupling member has two ends and a generally smooth interior and exterior cylindrical surface and has an annular coaxial bore extending into one end thereof and shaped for threadedly receiving a corrugated hose of a predetermined size to allow the flexible coupling member to be threaded onto the end of a flexible corrugated hose. A clamp can be extended around the resilient hollow cylindrical coupling member for clamping the coupling member and the hose threaded thereinto a coupling neck, such as the neck from a vehicle radiator, so that a flexible corrugated hose can be cut to any length and attach to a smooth or rigid neck with a clamp to achieve a fluid type seal between the corrugated hose and neck.

Abstract: A fitting for convoluted tetrafluoroethylene hose wherein all of the fitting components are reusable. The fitting includes a tubular nipple inserted into the end of the convoluted hose, and the outer nipple end includes conduit attachment structure. Ridges and serrations defined on the nipple within the hose aid sealing, and a segmented socket of at least three segments interconnected by bolts compress the hose on the nipple. The fitting utilizes conventional cap screws, and permits field assembly and disassembly without special apparatus, and the configuration of the fitting produces a concise low profile.

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: The hose clamp for fire hoses on hose couplings comprises a nipple whereon the hose end is pushed. The hose end is pressed on the nipple via a radially resiliently compressible clamping sleeve by means of a clamping element against the outer surface of the nipple. The clamping sleeve comprises a conical outer face and the clamping element a conical inner face cooperating therewith. The clamping element consists of two generally semicylindrical clamping shells which are braced against each other at their peripheral ends by clamping screws which extend approximately tangentially through the wall thickness of the clamping shells. The nipple comprises an encircling annular collar which forms a radial abutment face for the hose end and the clamping sleeve.

Abstract: A pipe coupling for improved pull-apart strength of pipe lap joints is disclosed. A clamping band is applied to the outside pipe around the overlap region of the pipes. An attachment is applied around the inside pipe and the two bands are connected together by a linkage extending alongside the pipes. Preferably, a sealing structure is provided on the outer pipe in the overlap region such that sealing engagement between the outside and inside pipes is obtained when the clamping band is tightened. When the pipes are subjected to pull-apart forces, the linkage resists slippage or pull-apart motion. If there is slippage, more will occur on the side opposite the linkage and an oblique relationship of the pipes results. This produces a binding action between the pipes with increased frictional resistance to the pull-apart forces.

Abstract: A flexible pipe coupling for the end portions of two pipes has an elastic sleeve whose open ends receive the end portions of the pipes and which has a centrally located partition extending from its internal surface and abutting against the end faces of the inserted pipes. The partition is flanked by two internal grooves which are formed in the internal surface and are flanked by annular surfaces sloping inwardly toward the partition. The external surface of the sleeve has a centrally located outer groove and is surrounded by a split ring forming part of a clamp and having apertured lugs extending outwardly from the two end portions of the ring to be moved nearer to each other by a bolt and nut assembly whose shank extends through the apertures so that the sleeve is compressed and its internal surface sealingly engages the external surfaces of the pipes. The split ring has a corrugation which extends into the outer groove of the sleeve.

Abstract: A coupling and method of coupling thin-walled/tubing and the like includes an inner member and an outer member in the form of a sleeve or band surrounding the inner member with the tubing therebetween. The inner member is provided with a pair of tubing grooves and a seal receiving groove between the two tubing grooves or at least between one groove and the tube receiving end of the coupling. By means of annular ridges, the tubing is forced into the tubing grooves, and by means of an annular ridge the tubing is pressed tightly against the seal in the seal receiving groove, thus forming a fluid-tight coupling member.