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 coupling which establishes a separable fluidtight connection between the nipple of a pipe and an end portion of a hose has a composite sleeve with a tubular first section which is insertable into the end portion of the hose and a separately produced second section which is form-lockingly connected to the first section and has one or more prongs engageable with a retainer at the exterior of the nipple. The end portion of the hose is sealingly clamped between the first section of the sleeve and a tubular member which is integral with one axial end of the first section to define with the latter an annular space for the end portion of the hose. One or more sealing rings are inserted into one or more grooves in the external surface of the nipple and/or in the internal surface of first section of the sleeve. The two sections of the sleeve can but need not be made of the same material, and the prong or prongs of the second section can be made of resilient or ductile material.

Abstract: A quick-release connector wherein a tubular male component has a rear portion insertable into the end portion of a first conduit and a front portion insertable into the resilient front part of a tubular female component. The male component has an annular protuberance between the front and rear portions and the protuberance has a conical front flank and a radial rear flank. The rear part of the female component is insertable into the end portion of a second conduit and the front part has two arms with internal male detents within a ring which connects the front ends of the arms to each other. In order to insert the front portion of the male component, the conical flank of the protuberance is caused to move the detents apart until the detents snap behind the radial flank of the protuberance.

Abstract: A quick-release connector for pairs of hoses or other conduits has a tubular male component the front portion of which is insertable into the front part of a tubular female component and carries one or more sealing elements which engage the internal surface of the front part. The front portion of the male component is surrounded by a ring-shaped radially deformable retaining member with a smooth conical external surface which diverges from the axis of the male component in a direction toward the rear portion. The front part of the female component has a chamber behind one or more detents with radial flanks for engagement with the maximum-diameter end of the retaining member when the latter is fully received in the chamber.

Abstract: A coupling which establishes a separable fluid tight connection between a nipple at one end of a pipe and one end portion of a flexible elastic hose has a sleeve with a tubular section insertable into the end portion of a hose and a set of elastic prongs which can engage a retainer at the exterior of the nipple when the latter is inserted into the sleeve. A tubular clamping member surrounds the end portion of the hose and biases it into sealing engagement with the tubular section of the sleeve. A sealing ring in an internal groove of the tubular section is in sealing engagement with the external surface of the nipple. The groove is formed by providing the tubular section with a radially outwardly extending corrugation which contributes to retention of the end portion of the hose between the tubular section and the clamping member.

Abstract: A coupling which serves to connect the nipple of a pipe to the end portion of a hose has a sleeve with a tubular section insertable into the end portion of the hose and one or more flexible prongs which extend from one axial end of the tubular section and can be bent into engagement with an external retainer of the nipple. The prongs are made of a ductile metallic material. A sealing ring is inserted between the exterior of the nipple and the interior of the tubular section, and a tubular clamping member is used to urge the end portion of the hose against the external surface of the tubular section of the sleeve. The prongs are spread apart during introduction of the nipple into the sleeve, and are thereupon flexed inwardly to engage the retainer.

Abstract: A coupling for separably connecting one end portion of an elastic hose to a nipple at one end of a pipe has a sleeve with a circumferentially complete tubular section which is receivable in the end portion of the hose and can receive a portion of the nipple, and several substantially axially parallel elastic prongs which are engageable with an external retainer or with discrete external retainers of the nipple when the latter extends into the tubular section of the sleeve. A tubular clamping member is shrunk or otherwise applied around the end portion of the hose so that such end portion is clamped between the exterior of the tubular section and the clamping member. The entire tubular section and a portion at least of each prong is confined in the end portion of the hose when the latter is properly coupled to the nipple.

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 porvided 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 coupling for sealingly connecting an end portion of a hose to a nipple at one end of a pipe has a sleeve with a first section which surrounds the nipple and a separately produced second section which is form-lockingly connected with the first section and is received in the end portion of the hose when the coupling is assembled. The first section has a washer-like portion which is integral with axially extending prongs engaging a single ring-shaped protuberance or discrete tooth-shaped protuberances at the exterior of the nipple. The second section of the sleeve has an internal groove for a sealing ring which engages the external surface of the nipple. A tubular clamping member is shrunk onto the end portion of the hose and surrounds the second section of the sleeve.

Abstract: A coupling which establishes a separable fluidtight connection between the nipple of a pipe and an end portion of a hose has a composite sleeve with a tubular first section which is insertable into the end portion of the hose and a separately produced second section which is form-lockingly connected to the first section and has one or more prongs engageable with a retainer at the exterior of the nipple. The end portion of the hose is sealingly clamped between the first section of the sleeve and a tubular member which is integral with one axial end of the first section to define with the latter an annular space for the end portion of the hose. One or more sealing rings are inserted into one or more grooves in the external surface of the nipple and/or in the internal surface of first section of the sleeve. The two sections of the sleeve can but need not be made of the same material, and the prong or prongs of the second section can be made of resilient or ductile material.

Abstract: An expandible annular elastic strap has a circumferentially slotted first end portion, a tongue-like second end portion which extends into the slot of the first end portion, and an intermediate portion composed of an outwardly projecting circumferentially extending median section and two marginal sections which flank the median section. The width of each marginal section need not exceed and can be less than half the width of the second end portion, and the three sections of the intermediate portion of the strap extend all the way from the first to the second end portion. The median section of the intermediate portion can be provided with one or more circumferentially extending slots which taper in opposite directions. The median section reduces the area of contact between the external surface of a clamped hose and the intermediate portion of the strap.

Abstract: A hose fitting wherein the free end of a nipple or pipe is sealingly held in one end portion of a hose by a sleeve having a tubular body with a single axially parallel slot and one or more bridges extending across the slot at the exterior of the tubular body. The latter has depressions which extend toward the nipple or pipe to urge the end portion of the hose into sealing engagement with the nipple or pipe. The sleeve can be detached from the end portion of the hose by partially or fully destroying, by deforming or by removing the bridge or bridges so that the slot can be widened prior to separation of the sleeve from the hose.

Abstract: A coupling device for connecting an end of a hose to an end of a pipe having a circumferentially extending collar includes a tubular coupling element with axially spaced ends. A first end of the coupling element is received in the end of the pipe and the coupling element is provided with elastic hooks which engage the collar in order to fix the coupling element. The device further includes a sleeve having a first section which is received in the coupling element and defines therewith an annular space of width approximately equal to the wall thickness of the hose. The sleeve also has a second section which projects from the annular space into the end of the pipe so as to define an annular gap with the latter. The second section of the sleeve is of greater diameter than the first section and abuts the first end of the coupling element.

Abstract: The non-profiled end portions of two pipes can be coupled to each other by a ring-shaped band which has at least one axially parallel gap and circumferentially extending corrugations defining two outer chambers and at least one median chamber. Each chamber is open toward the peripheries of the pipes and each outer chamber surrounds a different pipe. Such outer chambers contain arcuate safety devices with radially innermost portions in the form of claws serving to penetrate into the material of the respective pipes when the band is tightened around the end portions of the pipes by a clamping unit which is designed to reduce the width of the gap. The median chamber of the band confines a deformable annular insert which has marginal sealing lips and serves to establish a seal between the internal surface of the band and the peripheral surfaces of end portions of the pipes when the clamping unit is actuated to reduce the diameter of the band.

Abstract: A pipe coupling wherein a composite housing surrounds the objects or parts to be coupled with one another. The housing confines two annular gripping members, one for each part and each having a trapeziform cross-sectional outline with two oppositely inclined legs flanking an annular web which can be biased toward the respective part by a set of screws mating with the housing. The radially innermost portions of the legs have teeth which penetrate into the material of the respective parts to hold the parts against axial movement relative to each other. Each gripping member can be received in a discrete groove which has a trapeziform cross-sectional outline and is bounded in part by two oppositely inclined flanks whose inclination with reference to the axis of the housing is more pronounced than the inclination of the legs on the gripping members. The teeth of the legs of the gripping members are immediately adjacent the respective flanks.

Abstract: A coupling device between a hose and the radiator of a motor vehicle has a nipple on the radiator with a circumferentially complete rib at its front end. The front flank of the rib is conical and the rear flank of the rib extends radially of the nipple and is adjacent a groove with three equidistant axially parallel ramps one of which is in line with a bridge extending forwardly of the conical flank. The end of the hose is attached to a coupling element with three equidistant prongs each having a radially inwardly extending claw at its front end. The claws slide along the conical flank of the rib when the front end of the coupling element is inserted into the front end of the nipple, and the claws ultimately enter into and are held in the groove. Each claw has two mutually inclined cam faces, the same as the bridge.

Abstract: A pipe clamp wherein a C-shaped elastic holder cooperates with a U-shaped confining member to define a space which can receive a pipe with at least some radial play. The end portions of the holder are biased away from each other by an arcuate intermediate portion which extends along an arc of more than 180 degrees, and the end portions of the holder have openings for reception of inwardly bent lugs on the legs of the U-shaped confining member. The end portions are further formed with ramps which guide the lugs toward and into the respective openings when the confining member is in the process of being affixed to the holder. The end portions of the holder move apart as soon as the lugs move into register with the respective openings whereby the lugs are compelled to enter the openings to thereby couple the confining member to the holder.

Abstract: A hose coupling wherein the end portion of a pipe is sealingly but separably connected with the end portion of a deformable hose by a tubular connector which has a first section sealingly fitted into the end portion of the pipe and a second section preferably sealingly attached to the end portion of the hose. The second section can abut against the end face of the end portion of the hose or it can surround or extend into such end portion. The connector carries one or more pivotable latching devices with pallets which engage a portion of the external surface of the end portion of the pipe or portions of surfaces bounding openings in the end portion of the pipe. A sealing element in the form of an O-ring or a sleeve is inserted between the internal surface of the end portion of the pipe and the external surface of the respective section of the connector to ensure that the seal between the connector and the pipe remains intact even if one of these parts moves axially relative to the other part.

Abstract: A hose coupling wherein the end portion of a pipe is sealingly but separably connected with the end portion of a deformable hose by a tubular connector which has a first section sealingly fitted into the end portion of the pipe and a second section preferably sealingly attached to the end portion of the hose. The second section can abut against the end face of the end portion of the hose or it can surround or extend into such end portion. The connector carries one or more pivotable latching devices with pallets which engage a portion of the external surface of the end portion of the pipe or portions of surfaces bounding openings in the end portion of the pipe. A sealing element in the form of an O-ring or a sleeve is inserted between the internal surface of the end portion of the pipe and the external surface of the respective section of the connector to ensure that the seal between the connector and the pipe remains intact even if one of these parts moves axially relative to the other part.

Abstract: The end portion of a hose is bonded to the front section of a tubular connector whose rear section surrounds the end portion of the hose and has two integral pallets whose teeth engage a circumferentially extending external rib of a nipple which receives the front section of the connector with the interposition of an annular sealing device. The rib has axially parallel passages which register with the teeth of the pallets during insertion of the front section of the connector into or during extraction of the front section of the connector from the nipple.