Abstract: A fuel delivery rail assembly for supplying fuel to a plurality of fuel injectors in an engine is provided. The assembly comprises an elongated conduit having a rectangular section and a plurality of tubular sockets. The conduit and each socket are tightly combined with a connection utilizing a caulking deformation of an annular extension, which is formed within either the conduit or the socket. A seal member is disposed between the surface of the conduit and the bottom side of each socket.

Abstract: A securing structure is used in securing a plurality of pipes of comparatively small diameter together. With each pipe having a flat surface portion in a straight section thereo, a bracket body is injection-molded from thermoplastic resin such that the flat surface portion and its vicinity of each pipe are embedded in the bracket body.

Abstract: Herein disclosed is a wrinkled pipe manufacturing apparatus in which an elastic member is inserted into a pipe to be worked and is pushed from at least one side so that it may be radially bulged to form an annular bulge on the circumference of the pipe and in which a punch and a chuck disposed around the circumference of the pipe are axially moved relative to each other to form a wrinkle from the annular bulge. The apparatus comprises: first and second mandrels held over a bed to move freely in the axial directions along the upper face of the bed and adapted to bear the pipe on their circumferences; first drive means for driving the mandrels in the axial directions; an elastic member arranged in the pipe and between the leading end faces of the first and second mandrels; second drive means for moving a punch and a chuck; and guide means for guiding the chuck and the punch in the axial directions on a concentric plane of the axis.

Abstract: A connector interposed between a small-diameter metallic pipe with a collar end wall and a flexible hose to connect them comprises a joint and a retainer. The joint is formed with a through hole extending in the axial direction thereof, and has a protrusion wall and two cylindrical walls projecting therefrom on either side. One cylindrical wall has a sealing member fitted in an annular groove formed in the periphery thereof. The retainer has an engaging wall formed with an opening adapted to be engaged with the one cylindrical wall, and a plurality of elastic arm walls with click walls extending from the engaging wall in the axial direction. In use, the one cylindrical wall is inserted in the metallic pipe, the other cylindrical wall is inserted in the flexible hose, and the collar end wall and the protrusion wall are resiliently clamped between the engaging wall and the click walls.

Abstract: The present invention provides a method of fixing a pipe by using a plate-like support with the said of an elastic holding piece or pieces. The plate-like support has a fitting hole through which it is fixed to the structure related to the pipe and a pipe clamping hole through which the pipe is inserted. Further, the elastic holding piece has a flat bottom surface and is provided with an engaging wall and an engaging claw at the front and rear ends thereof, respectively, with the provision of an engaging groove therebetween and the pipe has at least a flat portion on the outer periphery thereof. Accordingly, when the pipe is inserted into the clamping hole of the plate-like support after the holding piece is attached to the pipe, the engaging groove of the holding piece is brought into engagement with the inner periphery of the pipe clamping hole of the plate-like support with the bottom surface of the holding piece being in contact with the flat portion of the pipe.

Abstract: A bellows pipe is manufactured from a raw pipe, with an elastic body pinched between a movable core and a fixed core inside the raw pipe, by compressing the elastic body by axially moving the movable core to form an annular convex portion in the raw pipe, changing the annular convex portion to a bellows portion by axially moving a punch to press the annular convex portion, pinching the bellows portion between a chuck and a chuck inner block assembled therein, shifting the pipe a given distance by axially moving the chuck and chuck inner block holding the bellows portion therebetween, and repeating the foregoing steps. Therefore, a small-diameter raw pipe of smaller than 16 mm diameter can be deformed, the outer diameter, pitch, etc. of a bellows portion can be freely set, the elastic body is worn little.

Abstract: There is disclosed a connector for connecting a small diameter pipe, having a connector body and a socket member. The connector body formed with a small diameter chamber accommodating sealing members and a bush and an enlarged-diameter chamber provided with a retaining wall. The socket member has oppositely protruded pawl walls. The pawl walls engage with retaining holes formed in the enlarged-diameter chamber, thus incorporating the socket member thereinto. The socket member also has a notch to assume a C-shape in section and at least one pair of protruded walls engaging with the retaining holes.

Abstract: A small-size piping coupling joint, comprising a retainer member with a piping insertion hole perforated in a shaft center portion of a bottom wall and a plurality of locking claw walls projecting uniformly as tapered toward a rear side provided on a peripheral side wall portion, and a socket member provided with a flow hole in the shaft center portion ranging to a stepped expanded portion inside of an end portion on a coupling side, and having an engaging groove on an outer circumferential wall portion. With an outward swelling wall having a seal ring on the back positioned within the stepped expanded portion, the retainer member and the socket member are locked overlapping each other to connection, thus the locking claw walls are locked resiliently in the engaging groove on the socket member side to coupling of the piping.

Abstract: A connector for connecting a small diameter pipe is disclosed, the arrangement being such that: a joint body formed with an insertion bore for a pipe has large, intermediate and small diameter portions; a seal ring is attached to the intermediate diameter portion; and a holder including a pair of elastic stoppers is set in an opening formed in the large diameter portion, the stoppers engaging with a swelling wall shaped on the pipe circumference, thus positioning the pipe and preventing its removal. The connector further includes a confirmative member which is stopped in the opening when the pipe is in the proper connecting position to the joint body. The confirmative member comprises a securing wall provided at the tips with stopping pawls and having a pair of arms. The confirmative member is disengaged from the opening on the basis of a positional correlation between the swelling wall or elastic stoppers and the securing wall when the pipe is properly installed.

Abstract: A small-diameter pipe connector comprises a connector body and a socket body. The connector body has a channel, a stepped small-diameter chamber, and a stepped large-diameter chamber formed axially thereinside, whose rear peripheral wall portion defines a support wall. The socket body has obliquely-projecting pawl walls which are adapted to fit into axially-elongate holes formed in the peripheral wall around the large-diameter chamber of the connector body. In the assembled state, an expanded annular wall portion of a pipe is resiliently locked by the distal ends of the pawl walls in the large-diameter chamber, with the rear end inner peripheral surface of the socket body being supported by the outer peripheral surface of the support wall of the connector body.

Abstract: A connector for connecting a pipe includes a joint body internally formed with stepped small and large diameter chambers, sealing members attached to inside of the small diameter chamber, a bush for sustaining the sealing members, and a holder having pawls engaging with a pipe annular swelling portion when the pipe has completely been connected. The connector also includes a connection confirmative member caught by the holder and having a pawl impinging upon the swelling portion. The confirmative member disengages from the holder when the pipe has completely been connected.

Abstract: A connector for connecting a small diameter pipe is disclosed. The connector comprises a joint body formed with an insertion bore for a conduit and having large, intermediate and small diameter portions, the intermediate diameter portion being fitted with a seal ring, and a ring-like holder provided with a pair of elastic pawls engaging with an opening of the large diameter portion. When inserting the conduit into the insertion bore, the conduit fits to the seal ring, while holder pawls engage with an annular protrudent wall of the conduit, thus positioning the conduit and preventing its removal. The connector also includes a ring-like confirmative member provided with a pair of elastic pawls capable of engaging with grooves of the holder pawls. The positions of confirmative member pawls are determined between the holder pawls and the opening wall.

Abstract: Herein disclosed is a joint structure for jointing the ends of two pipes to each other. One pipe has its one end portion formed with a plurality of slots arrayed circumferentially in its wall and with an inward projecting annular wall or a tapered annular wall positioned axially inside the slots to provide a receiving seat surface facing the other pipe. This other pipe is formed generally at its tip with a reduced annular wall providing a pushing seat surface and with at least one engagement groove positioned axially at the back of the reduced annular wall and extending in the circumference. These two pipes are jointed together by holding the inward projecting or tapered annular wall in abutment against the seat surface of the reduced annular wall, by fastening that one pipe at its portions of the slots in the engagement groove to reduce and deform it.

Abstract: A connector for connecting a small diameter pipe has a connector body internally formed with stepped small and large diameter chambers. a bush sustains sealing members in the small diameter chamber. A socket includes a pawl-like walls engaging with a pipe annular swelling wall in a completely installed state of the pipe. The connector further includes a confirmative member having confirmative portions composed of a pair of flexible arms. The arms are pressed and expanded by the top of pipe swelling wall when the pipe is properly set, thereby making the confirmative portions more protrudent than slots perforated in the peripheral wall of the enlarged diameter chamber.

Abstract: There is provided a flexible composite hose constructed such that a plastics inner tube is covered with an outer tube of heat-shrinkable material, with the inner tube being compressed by the shrinkage force of the outer tube. It is produced by covering an inner tube with an outer tube having a slightly larger inside diameter than the outside diameter of the inner tube, and then heating the tube assembly at a proper temperature to effect heat shrinkage. It has good chemical resistance and pressure resistance.

Abstract: A stationary clamping device for fast attachment of a tubular article such as a metallic tube, a resinous tube, or a wire harnessing member to a basal surface comprises a clamp proper formed of a platelike fitting wall possessing a fitting hole intended for union of the clamp proper and the basal surface and a socket member of a small length made of a thermally shrinking material and adapted to tack the engaging wall and the end part jointly in an enclosed state. The fast attachment is attained by setting the tubular article on the engaging wall, collectively tacking the set portion of the tubular article and the immediate vicinity thereof with a socket member of thermally shrinking material, and heating the socket member or the set components thereby causing thermal shrinkage of the socket, contraction of the tacked components, and immobilization of the tubular article.

Abstract: An improved coupling for connecting a pipe joint and a metal pipe which has a relatively small diameter not exceeding about 30 mm and a wall thickness not exceeding about 2 mm is offered. The coupling is often used to form a pipeline for supplying oil, air, etc. to an automobile, machine or apparatus, or collecting exhaust gas, etc. The coupling is to connect a metal pipe to a pipe joint having a bore defining a fluid passageway, wherein the joint includes a cylindrical wall portion extending from an annular shoulder, and the pipe extends into the cylindrical wall portion and has an end provided with a radially outwardly projecting flange. An elastic seal ring is provided adjacent to the shoulder and the flange. A cylindrical member is disposed between the cylindrical wall portion and the pipe for holding the flange and the seal ring against the shoulder, the cylindrical wall portion having a radially inwardly bent end holding the cylindrical member.

Abstract: A hose coupling assembly comprising a joint body having a central fluid bore extending therethrough and an annular groove provided thereon at one end of the bore and coaxial with the bore. The joint body also has a tubular protrusion at the opposite end of the bore and to be coupled to a hose. An elastic seal ring is inserted into the groove and has a V-like groove therein. A tubular member has at one end an annular protrusion engaged in the V-like groove in the elastic ring and is coupled at the other end to another house. The joint body and the tubular member are held elastically by pawls provided on one of them in a removable manner and aligned automatically with each other by their unique structure.

Abstract: A pipe joint for connecting a pipe having a relatively small diameter includes a generally cylindrical main body having an axial bore in which an end portion of the pipe and a plurality of seal rings surrounding the end portion of the pipe can be fitted. The main body has a tubular extension defining a connector for another tubular member to be connected to the pipe by the joint and having an axial bore which can be connected with that of the pipe. The main body also has a plurality of pawl projections or a shoulder on its outer peripheral surface. The pipe has a radially outwardly projecting wall portion near its end portion. A generally cylindrical cap has an end wall portion provided therethrough with a central opening through which the pipe can extend into the main body, and a plurality of resilient arms projecting from its end wall portion.