Abstract: Disclosed is a method of producing a welded steel tube with excellent inner surface corrosion resistance, in which at least one surface of a steel strip is coated with a first plate layer made of at least one of nickel, cobalt and alloys based on the metals, the plated steel strip is formed into a welded tube with the plated surface being inside, a film-forming material of at least one of tin and tin-based alloys is inserted into the inside of the welded tube and is then heat-treated at a temperature not lower than the melting point of the film-forming material by passing the tube through a continuous heating furnace having a non-oxidizing gas atmosphere therein so that the film forming material as inserted into the welded tube is fused and spread over the first plate layer to form a second plate layer thereon, and the tube is finally cooled.

Abstract: Branch connectors connected with a high-pressure branched fuel tube forming a fuel supply passage to a Diesel engine. Each connector has a circulation passage through which high-pressure fuel circulates. The passage extends axially within the main pipe. Holes extend through the wall defining the passage. Pressure-receiving seat surfaces are formed, each around an opening in the outer surface of the main pipe. The diameter of the opening increases outwardly. Each connector has a fluid passage in communication with the circulation passage, as well as a push head portion bearing on the corresponding seat surface. Coupling metal fittings surround the main pipe. The connectors are screwed to their respective fittings, for fastening the connectors to the main pipe. The bearing portion of each push head portion is a substantially spherical surface whose center is located on the axis of the connector.

Abstract: Herein disclosed is a temperature sensitive fluid type fan coupling apparatus which comprises: a sealed container including a casing and a cover, a partition dividing the inside of the sealed container into an oil sump and a torque transmission chamber housing the drive disc; a dam formed in a portion of such an inner circumference of the sealed container as faces the outer circumference of the drive disc, on which the oil is collected at the time of rotation; a circulation passage communicating with the dam and leading from the torque transmission chamber to the oil sump; a valve member fitted in the oil sump for opening an outflow adjusting orifice leading to the torque transmission chamber, if the ambient temperature exceeds a preset value, and closing the same if below the preset value; and a spiral temperature sensing element mounted on the front face of the cover and associated with the valve member if spirally deformed in accordance with the temperature change.

Abstract: An end fitting for eye joint is manufactured in the form of half-finished product first through a series of cold forging coming in pressing or drawing, punching and rearward extrusion of a short metallic cylindrical material, and then a finished product is obtained through cutting process applied thereto. For the half-finished product to obtain first, cutting process is not particularly required.

Abstract: Herein disclosed is a temperature sensitive type fluid fan coupling apparatus which comprises: a sealed container including a casing and a cover, the container being borne through a bearing on a rotating shaft, which has a drive disc fixed to its leading end, and having a cooling fan attached to its outer circumference; a partition dividing the inside of the sealed container into an oil sump and a torque transmission chamber housing the drive disc, a dam formed in a portion of such an inner circumference of the sealed container as faces the outer circumference of the drive disc, on which the oil is collected at the time of rotation; a circulation passage communicating with the dam and leading from the torque transmission chamber to the oil sump; a valve member fitted in the oil sump for opening an outflow adjusting orifice leading to the torque transmission chamber, if the ambient temperature exceeds a preset value, and closing the same if below the preset value; and a temperature sensing element mounted on t

Abstract: An exhaust gas cleaning device is constructed of a honeycomb core body formed by superposing in a contiguous relation a planar band made of a metal sheet and a corrugated band made from another metal sheet one over the other. The honeycomb core body defines a number of network-patterned axial gas flow passages and is adapted to carry an exhaust gas cleaning catalyst thereon. The planar band has alternating rugged sections and flat sections of desired lengths.

Abstract: There is disclosed an improved sliding exhaust brake system installed on a large vehicle. The brake system comprises a housing, an exhaust gas passage, a main valve member taking the form of a flat plate, an exhaust pressure-adjusting hole formed in the main valve member, a block member fixed to the front end of a piston rod, and a piston valve mechanism for opening and closing the exhaust pressure-adjusting hole. When the passage is closed by the main valve member, it is pushed in one direction by the front end of the piston rod. When the passage is opened, the block member engages the main valve member to move it in the opposite direction. The piston valve mechanism is biased forward by a spring.

Abstract: A temperature sensitive fluid-type fan coupling device comprises a closed enclosure including a casing journalled on a rotary shaft through a bearing and having a cooling fan at its outer periphery, and a cover, a partition adapted to divide the interior of the closed enclosure into an oil chamber and a torque transmission chamber within which a drive disk is located and including a oil flow adjustment opening, a dam mounted to the inner periphery of the closed enclosure in a face-to-face relation to the outer periphery of the drive disk, an oil flowing toward the inner periphery of the closed enclosure during spinning of the closed enclosure, a circulation passage extending from the torque transmission chamber to the oil chamber through the dam, a valve element mounted within the oil chamber and having one end operable to open the flow adjustment opening when external temperature exceeds a given temperature and close the flow adjustment opening when external temperature is below the given temperature, a temp

Abstract: A connector used in connecting a resin tube and a metallic pipe of comparatively small diameter comprises a connector body and a plurality of elastic pawl members. The connector body is formed with a large-diameter chamber. The peripheral wall of the chamber has a plurality of lock holes distributed in the circumferential direction thereof. Each elastic pawl member is assembled such that its rear end portion is passed through a corresponding one of the lock holes, bent and secured in place, and its front end portion resiliently retains and secures an expanded portion of the pipe inserted in the chamber.

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 fuel delivery rail assembly is disclosed for supplying fuel to a plurality of fuel injectors in an engine. The assembly comprises a plurality of sockets and rail tubes. Each socket is divided into an upper portion and a lower portion. In one embodiment, each rail tube is also divided into an upper portion and a lower portion. All the socket upper portions and all the rail tube upper portions are combined into an elongated upper half unit, and all the socket lower portions and all the rail tube lower portions are combined into an elongated lower half unit. The upper half unit and the lower half unit are tightly connected byu a caulking deformation of one edge relative to another, with a seal member therebetween.

Abstract: An improved method of making a cross joint between different size pipes is provided. A punch, die and a pressing machine are prepared. The punch includes a center rest for receiving a small pipe, a curved slot and a curved surface for transforming an end of the small pipe. Under the actuation of the pressing machine, the end of the small pipe is transformed into an arcuate configuration which is identical with the inside curvature of a large pipe. Simultaneously, a curved bead is formed on the small pipe remaining circumferentially equal distances from the resultant arcuate edge of the small pipe. This distance is substantially the same as the wall thickness of the large pipe. Utilizing the arcuate edge and the curved bead, the small pipe and the large pipe are welded or brazed together, resulting in a cross joint having no protrusion into the large pipe space.

Abstract: There is disclosed a temperature-controlled fan fluid coupling which supplies cooling air to the engine of an automobile according to the operating conditions at all times. The coupling includes a rotating shaft, a driving disk fixed to the shaft, and an enclosed housing consisting of a cover and a casing. The coupling further includes a dam for collecting oil, a circulation passage, a valve member for opening and closing a hole formed in a partition plate, and a temperature-sensing element. Radially protruding fins or recessed walls are formed to force oil to the dam.

Abstract: A metal-made carrier body is fabricated for an exhaust gas cleaning catalyst. At least one sheet-like metal band and at least one corrugated metal band, each of said bands being made of a thin metal sheet, are superposed one over the other so as to establish contacts therebetween, thereby forming a multi-layered composite body defining a number of network-patterned gas flow passages along the central axis thereof. The composite body is dipped in an electroless plating bath capable of forming a brazing coating layer on the composite body so as to form a brazing coating layer at least in the vicinity of each contact except for the contact itself. The composite body is then subjected to a heat treatment so as to braze the contacts between the sheet-like metal band and corrugated metal band. Before dipping the composite body in the plating bath, it may optionally be enclosed in a cylindrical metal casing. The composite body and cylindrical metal casing are also brazed together at their mutual contacts.

Abstract: A fan fluid coupling for use with an automotive engine. The coupling comprises a sealed housing, a partition plate that partitions the inside of the housing into an oil reservoir chamber and a torque transmission chamber, a resilient tonguelike valve member, and a rod member. The partition plate is provided with an outflow-adjusting hole located close to the outer end of the partition plate. The hole is a slot extending circumferentially of the partition plate. One end of the valve member is fixed to the partition plate. The valve member is curved upward. The front end of the valve member is in resilient contact with the rod chamber against which a bimetallic strip is pressed.

Abstract: Disclosed herein is an exhaust gas cleaning device which is suitable for arrangement at an intermediate point in an exhaust gas system of an automotive vehicle and has good efficiency. The exhaust gas cleaning device includes a metal-made carrier body for an exhaust gas cleaning catalyst. The carrier body is composed of a multi-layered composite body by superposing one over the other at least one planar metal band made of a thin metal sheet and at least one corrugated metal band made of another thin metal sheet and defining many network-patterned gas flow passages along a central axis thereof to allow an exhaust gas to axially flow as streams through the gas flow passages. At least one of the bands defines many holes and many raised portions, preferably, ridges around or near the respective holes. As an alternative, at least one of the bands is made of a metal wire net.

Abstract: Disclosed is a method of fixing a pipe by means of a clamp body. A bent wall is formed by being provided integrally with a tabular clamp member in such a manner as to project from at least one portion of a pipe assembly hole bored in the tabular clamp member having a fixing portion or by allowing a separately formed cylindrical member of a short length to be inserted and fitted in the assembly hole and secured to the clamp member. In an engagingly secured state in which the pipe is inserted in the assembly hole, the projecting wall and a portion of the pipe in the vicinity of the projecting wall are clad with a heat shrinkable cylindrical piece of a short length such as an irreversible shape memory alloy or a heat shrinkable resin, and the fixing of the pipe is effected by subjecting the cylindrical piece to heat shrinkage by heating. A plurality of the bent walls constituting projecting walls may be provided at intervals, or the bent wall may be provided on each side of the clamp member.

Abstract: A metal-made carrier body is provided for carrying thereon an exhaust gas cleaning catalyst. The carrier body is formed by superposing a sheet-like metal band made of a thin metal sheet and a corrugated band made from another thin metal sheet one over the other in a contiguous relation into a multi-layered composite body defining many network-patterned gas flow passages along a central axis thereof and then enclosing the multi-layered composite body within a cylindrical metal casing. The cylindrical metal casing has a double-layer structure composed of an inner portion made of a metal material having a coefficient of thermal expansion similar to that of the constituent members of the multi-layered composite body and an outer portion made of another metal material having greater heat- and corrosion-resistance than the metal material of the inner portion.

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 connected with a tube having a relatively small diameter, say about less than 20 mm, for supplying oil, air, or the like. The body of the connector has a connecting tubular wall, a communication hole formed in the tubular wall, and a large stepped chamber formed along the axis of the body. A jaw wall protrudes outwardly from the rear end of the chamber. One or more seal rings are mounted in the chamber. A bush member is inserted in the rear portion of the chamber. A socket member has a base wall from which resilient claw walls protrude. The front ends of the claw walls extend into the chamber and are in resilient contact with the outwardly swelling annular portion of the tube.