Abstract: A torsional joint assembly and method of making same having members of formed of dissimilar materials bonded together at calculated angles to result in essentially singularity-free joints.

Abstract: A self fixturing adhesive attachment is provided for securely mounting an attachment component such as a threaded stud on the surface of a substrate. The self fixturing attachment includes a base fixture carrying the attachment component and defining a base surface for receiving a selected curable bonding agent thereon. A resilient pressure sensitive adhesive member has a first portion carried by the attachment component at a blind side thereof, a second portion secured to the base fixture, and a third portion extending therebetween. Following pressed mounting of the base fixture with bonding agent thereon onto the substrate, the attachment component is movable to press the first portion of the pressure sensitive adhesive member into adherence with the substrate, resulting in stretched elongation of the third portion thereof to pull the base fixture with a positive force toward the substrate for the duration of the bonding agent cure time.

Abstract: A guiding means at a joint between boards, the joint comprising groove and tongue preferably intended to be joined by means of glue. The tongue includes at least one guiding wedge. A fitting clearance between the tongue and the groove includes a first fitting clearance and a second, guiding, fitting clearance. The second, guiding, fitting clearance is obtained through the guiding wedges which are arranged parallel to the extension of the joint. The first fitting clearance comprises the main part of the fit and the second, guiding fitting clearance comprises a smaller part of the fit. The first fitting clearance is in the range 0.1-1 mm, while the second, guiding, fitting clearance is in the range 0.01-0.2 mm. The tongue of the joint is provided with at least one equalising recess so that at least one equalising cavity is formed in the joint, which equalising cavity receives surplus glue used during the joining.

Abstract: A method of securing a blind fastener (10) in a composite material (40, 42) comprises the steps of forming of hole (48) in an outer wall (40) of the composite material, subsequently inserting a liquid adhesive (50) through the hole (48) so as to fill a chamber (44′) formed in the material behind the hole, then inserting a blind fastener (10) through the hole into the liquid adhesive until the head of the fastener (14) engages with the composite material wall (40), subsequently deforming the blind anchor (62) into engagement with an inner surface of the outer wall (40) to support the blind fastener (10) in the liquid adhesive while it sets and, in particular, for the liquid adhesive to engage with at least one channel (64) formed in the circumference of the fastener.

Abstract: The invention discloses an elongate spliced member, particularly a tooth rack for a rapier loom, and a method for making same. The spliced member includes two elongate member segments joined at respective ends and having at least one through aperture positioned laterally from a respective first side to a second side adjacent the joined ends. An elongate recess is formed on opposed surfaces of the member segments, and each recess surrounds a respective aperture and communicates with the respective joined end of the segments. A carbon fiber strand is wound alternately through the aperture in each of the segments to splice the segments together end-to-end. The spliced member has the functional characteristics equivalent to an integrally formed member of the same length.

Abstract: A joint made between prestressing strands with a prestressing strand coupler is covered with a transparent coupler sheath having a retarded-hardening resin filling material injection opening and discharge opening provided in a tube wall thereof, and a resin filling material is injected into the transparent coupler sheath from the injection opening to fill the coupler sheath with the filling material. Thereafter, the whole outer peripheral portion of the prestressing strand joint, including the coupler sheath, is embedded with placed concrete. Tension is applied to the prestressing strands after the concrete has hardened and before the resin filling material hardens, thereby completing an excellent prestressing strand joint structure. According to the present invention, the filling condition of the resin filling material in the coupler sheath around the prestressing strand joint can readily be confirmed by visual observation.

Abstract: A fixing member (1) designed for at least partially interlocking axial securement in a solid body (4) by means of an initially fluid setting material (2) introduced into a blind borehole (3), and is intermediately mechanically fixed and adjustable. The fixing member (1) is a peripherally closed medium to thickwalled tubular member (5), at least in part radially deformed and of uniform wall thickness having an axial passageway (6) extending through it.

Abstract: A micromachine is embedded into an adhesive film for increasing the shear strength of the adhesive used to form a bonding joint. The micromachine has an irregular shaped cross section, such as a trapezoid, so that when the micromachine tends to rotate between two bonded adherents, a surface portion of the micromachine tends to penetrate into and compress the adhesive towards a bonding interface with the constrained adherent for increasing the shear strength of the bonding joint.

Abstract: A self fixturing adhesive attachment is provided for securely mounting an attachment component such as a threaded stud on the surface of a substrate. The self fixturing attachment includes a base fixture carrying the attachment component and defining a base surface for receiving a selected curable bonding agent thereon. A resilient pressure sensitive adhesive member has a first portion carried by the attachment component at a blind side thereof, a second portion secured to the base fixture, and a third portion extending therebetween. Following pressed mounting of the base fixture with bonding agent thereon onto the substrate, the attachment component is movable to press the first portion of the pressure sensitive adhesive member into adherence with the substrate, resulting in stretched elongation of the third portion thereof to pull the base fixture with a positive force toward the substrate for the duration of the bonding agent cure time.

Abstract: A micromachine is embedded into an adhesive film for increasing the shear strength of the adhesive used to form a bonding joint. The micromachine has an irregular shaped cross section, such as a trapezoid, so that when the micromachine tends to rotate between two bonded adherents, a surface portion of the micromachine tends to penetrate into and compress the adhesive towards a bonding interface with the constrained adherent for increasing the shear strength of the bonding joint.

Abstract: A securing element for interposition between two components to be joined, includes a double-stick bonding substrate, and plural anchoring bodies adhesively held on the substrate and projecting toward the components. A detachable film is deposited on a bottom side of the substrate whereas a protective film is applied on the topside of the substrate to captivate the anchoring bodies. After removal of the detachable film, the securing element can be adhered to one of the components to be joined, and the two components can then be joined together by pressing them together, whereby the anchoring bodies penetrate into the surface of the components to establish a non-slip connection.

Abstract: A process for butt-jointing profiles or profile sections made of elastomeric material including providing profiles having cut surfaces in jointing areas, moving the profiles toward each other leaving a bonding gap between the cut surfaces, introducing a jointing material into the bonding gap, and moving the profiles even closer together until their cut surfaces come into bonding contact with the jointing material. The jointing material is introduced directly into the bonding gap in a viscous state, preferably extruded into the bonding gap as a film.

Abstract: The invention concerns a beam end fitting and method for joining together wooden beams, the fitting comprising a tubular member adapted to be firmly secured by gluing inside a hole drilled in at least one of the two ends of a wooden beam, and connecting means for connecting the beams to each other, either directly or by an interposed core fitting, wherein said end fitting is provided with blocking means for blocking the end fitting inside the beam during the gluing step.

Abstract: A vehicle closure panel assembly having an outer panel and an inner panel. The outer panel has a flange along one edge which is folded over a flange of the inner panel. A metal coating provides a seal between the edge of the flange of the outer panel and the flange of the inner panel. The coating is made of metal and is sprayed on. The metal coating provides a mechanical and metallurgical bond and may offer sacrificial protection against corrosion and instantaneous or immediate bonding.

Abstract: The invention relates to a process and a device for dividing a tubular flagpole. This is achieved by introducing into the flagpole an elongated body, which over at least part of its length has a geometric shape, which in concert with a complementary geometric shape inside the flagpole ensures that the flagpole can be cut and assembled in a way that guarantees the rectilinear continuity of the flagpole. The complementary geometric shape is formed in that, after the body is introduced into the flagpole, a filling material is injected so that the space between the flagpole and the elongated body is filled. The flagpole is then cut around the elongated body down to the outer surface of the body so that the said geometric shape allows the flagpole to be divided into two sections at the cutting side, the body remaining fixed to one of the sections.

Abstract: A process for securing a guiding member on a support which includes at least one opening which is substantially greater in dimension than an end of the guiding member which is supported therein. A space provided between the at least one opening and the end of the guiding member is filled with a polymerizable resin which is polymerized to secure the guide member within the opening after the guiding member has been precisely positioned in a predetermined position. A marking apparatus incorporates the guiding member secured to the support, and elements are provided for retaining the guiding member in position within the at least one opening and, in some embodiments, for selectively adjusting or removing the guide bar from the at least one opening.

Abstract: The present invention relates to a process and a device for dividing a tubular flagpole. This is achieved by introducing into the flagpole an elongated body, which over at least part of its length has a geometric shape, which in concert with a complementary geometric shape inside the flagpole ensures that the flagpole can be cut and assembled in a way that guarantees the rectilinear continuity of the flagpole. The complementary geometric shape is formed in that, after the body is introduced into the flagpole, a filling material is injected so that the space between the flagpole and the elongated body is filled. The flagpole is then cut around the elongated body down to the outer surface of the body so that the geometric shape allows the flagpole to be divided into two sections at the cutting side, the body remaining fixed to one of the sections.

Abstract: A joint structure, such as a bulkhead joined to an annular shell, is formed by providing a conforming pattern of ridges and valleys on the facing portions of the elements to be joined. A tensioned band is applied to the external surface of the annular shell overlying one of the ridges in the annular shell. The tensioned band stresses the joint in compression, offsetting subsequently applied shear stresses so as to negate peeling failure forces. The joint loadings are sustained with a mechanical interlocking, making the use of an adhesive optional.

Abstract: A step joint between two plastic pieces suitable for an ultrasonic weld joint. A first plastic piece includes a series of ribs, each rib having generally horizontal top surface. A generally vertical section extends upward behind the ribs. A second plastic piece includes a generally horizontal section for mating with the ribs, the horizontal section of the second plastic piece covering the generally horizontal section of two or more ribs. The second plastic piece also includes a generally vertical section suitable for mating with the generally vertical section of the second plastic piece.

Abstract: Anchor systems for joining structural members include a resiliently deformable member such as a dished washer to permit easy visual determination that the anchor system is correctly tightened in place. Post-tensioned anchor systems of the kind disclosed are particularly suitable for joining structural members, such as end-to-end columns. One of a number of mold parts, including a threaded tapered mold part, forms a threaded tapered hole in a poured concrete structural member for use with anchors, and passages permitting the introduction of a resinous securing agent may be formed in cooperation with the threaded tapered holes. Highway barriers can be formed with such holes and joined with the resin filling the holes and space between barrier ends.

Abstract: Blast-resistant building (11) includes a structural connection (10) including at least one layer of fiber reinforced composite (90) bonded to each connected structural element (20,30) along the length of the connection between structural panel (20) and elongate anchoring structures (30), such as I-beam (40) or additional concrete panel (50). Layer of fiber reinforced composite (90) spans peripheral seam (36), internal seam (37), or both between the connected elements, providing a tensile force under load which tends to hold the elements together and to strengthen the connection while simultaneously providing ductility along the seam, lessening the risk of fracture of either element or the connection under atypical loading, such as from a blast. Connection (10) includes an elongate tension member, such as bolt (80), for attaching the various elements, and a force dampener, such as a rubber isolation washer (89), to increase the ductility of the connection.

Abstract: A rotor support for use in superconducting motors including first and second torque tubes secured between first and second rotor shaft ends and a rotor winding supporter wherein each tube consists of a thermally insulating composite conduit having first and second ends and first and second couplers adhesively bonded to the first and second ends along tapered securing surfaces resulting in essentially singularity-free joints between the conduit and couplers despite disparate shear modulus.

Abstract: A device for joining the parted ends of a rope member is provided. The device comprises blocks that are epoxied to the ends of the rope member and a threaded sleeve to thread onto one of the blocks. The invention also provides a method of joining the parted ends of a rope member including the steps of epoxying a block to each end to be joined to form a splice and coupling a threaded sleeve to one of the blocks while securing the other block within the sleeve.

Abstract: The joint of concrete building elements includes a system of connecting pins (2), formed by rows of mutually parallel bars, the central parts of which cross the area end sections, concreted in mutually joined building elements. The connecting pins (2) are arranged in a brush system in at least one row in particular, however, into a group of mutually parallel rows of the connecting pins (2) arranged one over the other. The system of connecting pins (2) is concreted, in part of its length, into the contact surfaces of the supporting column head (1), from which the protruding second sections of the length of connecting pins (2) are concreted in the ceiling structure, particularly in the ceiling slab (3) and/or in ceiling girders (4).

Abstract: A plastic joint for an automotive lamp assembly (10) has a housing (14) containing a tongue (20) and lens (12) containing a groove (18) to accept the tongue. The tongue or the groove can provide a channel for a thermoplastic material that is a bonding agent between the tongue and groove. The channel can also be formed by making the tongue narrower than the groove or by providing protrusions or depressions on the tongue or groove. The joint is formed by assembling the housing and lens and injecting the thermoplastic material into the channel in the joint. When the thermoplastic material cools, a bond is formed between the tongue and groove that fastens the lens and housing together.

Abstract: A sleeve for splicing together reinforcing bars disposed in an opposing, end-to-end relationship comprising a tubular shell member provided with opposing end walls, a grout port provided in the tubular shell for adding grout to the interior of the tubular shell, apertures provided in the end walls for receiving the reinforcing bars from opposite ends thereof, a plurality of supporting projections integrally formed with the tubular shell and extending from one side of the tubular shell, fixing means adapted to be inserted into the tubular shell on longitudinally opposite sides from the supporting projections and intermediate the supporting projections for fastening the reinforcing bar to the supporting projections, the supporting projections being formed, in cross section, with a recess for receiving the reinforcing bar coaxial to the tubular shell.

Abstract: A molded plastic automobile body is bonded to a steel frame by depositing an adhesive layer between the body and frame in a circular pattern, to facilitate thermal expansion of the body relative to the frame. To prevent the body from peeling away from the frame, anti-peeling bolts further connect the body to the frame. To diffuse over a large area the downward force of the bolt heads on the plastic body, thereby reducing scalloping of the plastic body, spring washers having large surface areas are sandwiched between the bolts and the body.

Abstract: A wood structural member coupling of the present invention includes a pocket having slots formed within the wood structural member to receive tongue portions of a connector base, which is bonded by an adhesive within the pocket. A connector extension extends from the base and includes a coupling for connecting to another structural member.

Abstract: An elongated tubular metal body includes a longitudinally extending wedge portion having converging inner wedging surfaces defining an included angle of less than seventy degrees for receiving the end portions of concrete reinforcing bars. A series of longitudinally spaced threaded holes are formed within the tubular body in opposing relation to the wedge portion, and a socket head set screw or a shear head screw is threaded into each hole. The screws have conical pointed tips for penetrating a bar when the screws are tightened to a predetermined torque, and the screws force the outer ribs on the bar into the tubular body. In one embodiment, a section of cylindrical seamless tubing of ductile steel is cold-forged or deformed within a die set to form the tubular body with a generally diamond-shaped cross-sectional configuration.

Abstract: A hand-held striking tool has a striking head having an eye passage of generally rectangular cross section a portion adjacent one end thereof enlarged along one transverse axis. Seated in the eye passage is an elongated handle with a metallic core rod of generally I-shaped cross section with a longitudinally extending notch in the web portion at one end providing a bifurcated end portion which has its legs inclined outwardly to a transverse dimension greater than that of the other end of the eye passage. A sleeve of synthetic resin is provided about the core rod adjacent the head and extends over a portion of the length of the eye passage. Synthetic resin fills the eye passage about the core rod.

Abstract: A joint between an at least hollow ended, generally cylindrical first component and a second component. The first component has a first end portion terminating in a first free end region, a second end portion terminating in a second free end region, and a mid portion extending between the first and second end portions. The mid portion has a first pre-determined external diameter and the first end portion has an external diameter which increases gradually from the first pre-determined external diameter to a second pre-determined external diameter at the first free end region. The first end portion is adapted to be pushed onto a tapered pin extending from the second component to a joined position.

Abstract: In a drywall corner-trimming assembly, a splice is employed with two corner-trimming members, which approximate each other at one end of each member. Each member has a central portion and two flanged portions. With the splice straddling the members, a portion of one expansive surface of the splice faces the interior surface of the central portion of each member, which portion is located where the splice has at least one of the perforations. An adhesive layer is interposed between the same one of the expansive surfaces of the splice and the interior surfaces of the central portions of the members and is ventilated by the perforations.

Abstract: In a drywall corner-trimming assembly providing a "bullnose" configuration, two corner-trimming members and a splice are combined. Each member has a central portion and two flanged portions. The central portion has a generally arcuate profile. Each of the flanged portions extends from one of the lateral edges of the central portion at a step defining a lateral limit of a concave surface of the central portion. The members and the splice are assembled so that the splice straddles such members, so that a portion of one of the expansive surfaces of the splice faces the concave surface of the central portion of each of such members, so that the splice is concealed at least substantially by the central portions of such members are viewed, and so that each of the lateral edges of the elongate splice is pressed firmly against the step at one of the lateral edges of the central portion of each of said members. The splice is secured adhesively to the members, as by adhesive ribbons.

Abstract: A pipe connector has a coupling with a first cylindrical land, a second cylindrical land, and a third cylindrical land. There is a first annular recess defined between the first cylindrical land and the second cylindrical land, and a second annular recess defined between the second cylindrical land and the third cylindrical land. A gate channel communicates between the two recesses through the second cylindrical land. Circumferential seals extend around the first and third cylindrical lands. A cement injection port communicates between the outside of the connector and the first recess, and a cement vent port communicates between the outside of the connector and the second recess. In use, a pipe is inserted into the coupling to rest upon the three lands, and cement is forced into the injection port. The cement flows circumferentially around the first annular recess, through the gate opening, circumferentially around the second annular recess, and out through the vent port.

Abstract: A system for fastening a dowel to a wooden element includes a drilling assembly for forming a blind hole in the wooden element which includes a first portion which is cylindrical and a second portion which tapers outwardly in frusto conical shape from the lower end of the first portion. A dowel having initially a cylindrical shape is inserted into the blind hole and then expanded outwardly into the frusto conical portion. The expansion can be carried out by a tapered plug which is forced into the end of the dowel, by a wedge member which is forced into slits in the end of the dowel or by expansion of the dowel itself from an initial compressed position by absorption of moisture from an adhesive.

Abstract: A method of forming a coupling or connecting a composite drive shaft to an annular member comprising the steps of locating the shaft over the member and injecting adhesive through holes in the shaft to bond the shaft to the member.

Abstract: An elongated tubular metal body includes a longitudinally extending wedge portion having converging inner surfaces defining an included angle of about sixty degrees for receiving the end portions of concrete reinforcing bars. A series of longitudinally spaced holes are formed within the tubular body in opposing relation to the wedge portion, and a socket head set screw is threaded into each hole. The screws have conical pointed tips for penetrating a bar when the screws are tightened with a preset torque, and the screws force the outer ribs on the bar into the tubular body. A section of cylindrical seamless tubing of ductile steel is cold forged or deformed within a die set to form the tubular body with a generally diamond-shaped cross-sectional configuration, and longitudinally spaced and outwardly projecting ribs may be formed on the body.

Abstract: A wood structural member coupling of the present invention includes a pocket formed within the wood structural member to receive a connector base, which is adhered within the pocket. A connector extension extends from the base and includes a coupling for connecting to another structural member.

Abstract: A connecting element for creating a blind side connection for materials such as furniture. Connecting element includes a tenon which includes a groove positioned about the peripheral surface of the tenon. A compression material which is flexible and has excellent memory is inserted into the group on the tenon. A mortise is provided which has an opening for telescopically receiving the tenon and compression material into the inner chamber of the mortise. The inner chamber includes a set slot positioned around the interior surface of the chamber and is designed to receive the peripheral edge of the compression material on the tenon. Liquid and/or re-wettable adhesives can be used to rigidly connect the tenon in the mortise.

Abstract: A steerable drive axle includes an axle tube and tube yoke connected to one another as part of the drive assembly. The axle tube is secured at a first end to an axle gear carrier housing, with the second end connected to the tube yoke. The tube yoke includes a bore having an internal diameter flow with the plurality of first toothed splines. The axle tube has a plurality of corresponding toothed splines formed on the exterior surface thereof, with at least one of the first or second splines formed to extend along a helical path. The first and second splines are matingly engaged such that helix angle of the helical path creates an interference fit between the splines to retain the axle tube in a fixed position relative to the yoke.

Abstract: Reciprocally rotatable complementary surface adhering portions (34 and 44) are provided integral to each of two manufactured objects (30 and 40) to be rotatably adhered, such as a bowl and a holding base. Being complementary in rotation, these adhering portions mobilize the forces of intermolecular attraction in any smooth, viscous, continuously flowable, non-curing liquid (50) compressed into a liquid film (52) across their interface and are rotatable upon each other while adhered. Media for rotatably adhering comprise a variety of liquids, among which are common household products such as honey, syrup, liquid soap, and many other such viscous liquids. Depending upon the viscosity of the liquid employed, portions so adhered at normal room temperatures will temporarily resist a tensile force in excess of 0.454 kg (1 lb) per 6.55 cm.sup.2 (1 inch.sup.2) equivalent to a pull of 13.62 kg (30 lbs) on a bowl having a base adhering radius of 7.93 cm (3.125 inches).

Abstract: A bowling ball gutter connector apparatus having supports and a splice to be mounted in an extruded, spanning manner beneath bowling ball gutter section joints such that fastening of the gutter sections leaves the upper rolling surface of the gutter unimpeded.

Abstract: Push-fit connecting joints comprising a node and at least one hollow section, where the node contains attachment parts and the attachment parts feature openings to accommodate connecting elements, and the hollow section features at least one hollow chamber and at least one opening for the connecting element. The openings in the hollow section are oversized with respect to the corresponding openings in the attachment part and the region of the opening on the outside of the hollow section is covered over by a cover sheet. The cover sheet features for each connecting element an opening having the dimensions of the opening in the attachment part, and an adhesive is provide between the cover sheet and the hollow section. The push-fit connecting joints may be employed in the construction of Space-frame parts.

Abstract: It is an object of the present invention to provide a connector for truss having a high shearing resistance and a superior safety in which the connector can be inserted into and fixed in advance to the abutted surfaces of the structural members to be connected, adjustment of orientation of the connector is not needed, workability and installing workability can be remarkably improved and further the inserted and fixed connector can be prevented from being pulled when the connector is connected to the structural member.

Abstract: It is an object of the present invention to provide a connector in which the connector can be inserted into or fixed to in advance the abutting surfaces of the structural members to be connected, an adjustment of direction of the connector is not required, its workability and installing work can be remarkably improved at the same time the connector inserted into and fixed during connection can be prevented from being pulled off and its superior high safety in shearing resistance is attained. This connector is comprised of a connecting plate 2 formed in a flat plate; a hollow tubular member 3 having its one end fixed to both surfaces of said connecting plate 2 and the other end opened; a branch pipe engage part 7 communicating from a side part of the base end of said tubular member 3 to hollow part; a hollow branch pipe 8 having an engage part 9 removably engaged with the branch pipe engage part 7 formed at at least one end thereof; and a fixing hole 12 formed at a predetermined part of the connecting plate 2.

Abstract: This invention relates to an improved termination connection for advanced fiber composite cables of the type comprised of fibers fixed in a matrix binder. In particular, the composite cable is provided with one or more ribs of tension wound binder impregnated fiber cured on the end portion thereof. Potting material is secured over the ribs at the end of the cable preferably having a parabolically curved outwardly tapered contour to distribute the longitudinal and transverse forces over the fibers in the cable.

Abstract: A butt joint includes a first hollow profile member having a projecting first stop. The first stop has a first web and a groove-bounding web. A second hollow profile member is connected to the first hollow profile member to form an inside corner. The second profile member has a projecting second stop. The second stop has a first web and a groove-bounding web. A reinforcement part is disposed adjacent to the inside corner. The reinforcement part is elastically deformable and is supported by the first stop and the second stop.

Abstract: A tube joint and seat frame formed with tubes joined with the tube joint of the present invention in which the joint is formed by flaring the end of an outer tube, inserting an inner tube into the outer tube beyond the flare forming a telescoping tube portion in which the outer tube overlaps the inner tube. The clearance formed between the inner and outer tubes by the flare is filled with an epoxy resin adhesive. A metal forming process is performed forming apertures through the inner and outer tubes in the telescoping tube portion in which the aperture in the outer tube is concentric with the aperture in the inner tube and is surrounded by a flange extending radially relative to the axis of the tube into the aperture in the inner tube forming a mechanical interlock between the inner and outer tubes.

Abstract: A T-joint includes a frame extending along a longitudinal axis. A rung has at least one cavity and at least one cavity wall. The at least one cavity wall is parallel to the longitudinal axis. The rang has at least one fill opening. At least one T-joint part is fixedly connected to the frame. The at least one T-joint part extends into the at least one cavity. The at least one T-joint part is mechanically connected to the rung and is glued to the rung. The at least one T-joint part has at least one glue distribution channel that is substantially parallel to the longitudinal axis. The at least one T-joint part has at least one transverse opening which extends toward the at least one cavity wall such that the at least one fill opening, the at least one glue distribution channel and the at least one transverse opening are in fluid communication.

Abstract: A connector is inserted into connecting holes arranged at abutment surfaces between structural members, adhesive agent is fed from one end of a hollow part of the connector or an opening part of a branch pipe of the connector and the clearances between the surface of the connector and circumferential walls of the connecting holes are filled with adhesive agent flowed out of the other end opening at the hollow part of the connector so as to connect both structural memers in rigid form.