Abstract: In order to improve a folding machine for joining the edges of two sheet-metal parts forming an angle between them by means of a folding procedure, comprising a machine frame, a folding carriage movable on the machine frame by a drive in a guide means extending along a folding direction, this carriage having at least one pair of folding rollers for folding the edges of the sheet-metal parts, and holding devices arranged on the machine frame for fixing the sheet-metal parts in position during the folding procedure, such that large, in particular, long sheet-metal parts can be handled in a simple manner on this machine and are easy to insert into it, it is suggested that the guide means be movable in an essentially vertical direction, and that the folding machine have support surfaces arranged on a supporting plane extending at right angles to the folding direction, the sheet-metal parts being placeable on these support surfaces with edges which extend transversely to the edges resulting in the fold.

Abstract: In a method for producing helically wound lock-seam tubing, a metal strip is fed to a forming head in which the tubing is formed. In order to prevent lock-seam slip, a clinching roller device form interlocking spaced deformations on the lock-seam. An apparatus for such production comprises a clinching roller provided with a recess for forming the deformations against a counter roller.

Abstract: A sealed edge joint can be formed between two metal panels such as an outer vehicle door panel and an inner door panel, by using a flowable sealant bead between the facing surfaces of the two panels, and a thin film of uncured paint-like resin between a flange on the outer panel and the exposed surface of the inner panel. The paint film is cured to a solid impervious condition by a baking operation performed on the completed door panel assembly.

Abstract: Disclosed is method of manufacturing catalytic converters having a ceramic honeycomb surrounded by a supporting mat and located within a housing, comprising the following steps: (1) forming a cylindrical metal shell exhibiting a uniform curvature and having a lap joint exhibiting substantially the same curvature as the outer surface of the metal shell; (2) wrapping the honeycomb in a sufficient amount of supporting mat material and inserting the wrapped honeycomb into the metal shell; (3) compressively closing the metal shell around the wrapped honeycomb thereby, eating a substantially uniform compressive stress on the honeycomb by the supporting mat.

Abstract: A compact, lightweight closed coupling male spring lock fitting for direct connection to an air-conditioning hose having an inner sleeve, an outer sleeve and an annular cage, the inner sleeve having stepped portion that receives an inner surface of the annular cage. The annular cage surrounds the outer diameter of the inner sleeve and is spaced a distance from one end of the inner sleeve. The outer sleeve abuts an outer surface of the annular cage and prevents axial movement of the annular cage. The outer sleeve is retained in a retaining groove on the outer diameter of the inner sleeve, adjacent the stepped portion. The closed coupling of the outer sleeve and annular cage significantly reduces the overall length and weight of the fitting in comparison to prior art fittings and the inner sleeve may be machined opposed to conventional tube roll-forming processes.

Abstract: There is disclosed a pressure gauge construction in which a diaphragm assembly responsive to changing values of fluid pressure being supplied to the gauge is secured against an internal support surface of the casing by a combination of sealant and thermal staking.

Abstract: A sheet-metal elbow is coupled by direct attachment to a flat sheet-metal air inlet panel of an air distribution boot or register box by roll-formed flange portions that are mated in interlocking, overlapping engagement with each other. The air inlet panel includes an outwardly flared coupling flange bordering an air inlet opening. The neck of the sheet-metal elbow includes a folded coupling flange that is dimensioned for interfitting, overlapping engagement with the outwardly flared elbow coupling flange. The coupling flanges are clasped together by a hydraulic ram that drives an expandable mandrel into a V-shaped die cavity. The tightly clasped, overlapping flange portions permit smooth, continuous rotation of the elbow through 360.degree. with respect to the register box for alignment with a branch conduit. The interlocked flanges also provide a strong mechanical union that is virtually leak-free under normal ventilation air flow conditions.

Abstract: The sealed shielding unit comprises a unit made of multiple layers. The layers include a top surface and a bottom surface of a material such as metal, plastic or composite or the like and a middle portion of air or insulation product. The top and bottom layer and insulation are cut into designated shapes and then positioned into the predetermined positions and then pressed into a pan shape with edges having a small upper horizontal end portion. The upper horizontal end portion is folded over and then the edges are bent inward and flattened into a moisture sealed unit.

Abstract: A motor shaft assembly method for easily and inexpensively assembling a motor shaft with components and a motor housing eliminates the need for a snap ring or a threaded nut to retain the components on the shaft.

Abstract: An insertion die for the installation of an internally-threaded flange into a drum head by means of a single stroke cycle of a cooperating press includes components arranged for piercing a hole in the drum head and crimping a raised embossment which is formed in the drum head over and around the flange for securely anchoring the flange into the drum head embossment. The insertion die is configured with two workstations, one for a two inch inside diameter flange and the other for a 3/4 inch inside diameter vent closure. The insertion die includes a moveable die center at each workstation which is initially positioned in a blocking configuration to prevent crimping jaws from closing. The die center is moveable to a lower position below the crimping jaws which allows the jaws to act on the drum head embossment for crimping the embossment onto the flange.

Abstract: A method of forming a rail having an elongate base member and a load bearing insert is disclosed. The method includes forming a base member having surfaces with at least one longitudinal groove and inserting the load bearing insert into the longitudinal groove. Inserting of the load bearing insert may be performed by flexing the load bearing insert to fit into the longitudinal groove. The surfaces of the base member adjacent the longitudinal groove may be subsequently crimped to secure the load bearing insert.

Abstract: An apparatus for inserting angle plates or corners into channel flanges of ducts which is compact and mobile is described. The apparatus includes wheels for portability and a corner supply magazine which is in essentially a vertical position or an angle position relative to a base plate to permit utilization of the device in various environments and which permits the device to be utilized with duct sections having various shapes. The apparatus operates on a controlled cycle and once the cycle is started, a sequence of operations is automatically performed until the angle plate is inserted into the flange and crimped.

Abstract: A method of manufacturing a heat shield including the steps of providing a plurality of substantially uniform and equal thickness formable sheets, embossing the sheets to form standoffs, and preforming the sheets to an intermediate configuration having contours. Further, the method includes the step of cutting the preformed sheets to form a perimeter edge defining a projected area which is generally identical for each of the plurality of sheets. In addition, the method includes the steps of stacking the cut sheets, and joining the stacked sheets.

Abstract: A method of deck construction using polymer plastic lumber. Firstly, form a frame structure. Secondly, provide a plurality of polymer plastic boards having at least one axially extending groove. Thirdly, secure each of the polymer plastic boards to the frame structure by means of clips having projecting tabs that fit into the axially extending groove of the polymer plastic board. This securely fastens the polymer plastic board to the frame structure while permitting the axially extending groove to move along the tabs of the fixed clips upon thermal expansion and contraction of the polymer plastic board.

Abstract: A pressing tool for fastening a seal 6 in a groove 5 of a support body is a rotatable holder 12 carrying ball rollers 22. A lip 4 forms a wall of the groove 5. The ball rollers are moved in a circular path along the lip 4 to press the lip 4 so as to grip the seal 6 in the groove 5.

Abstract: A heat staking apparatus includes a workpiece support and a moveable support plate having a planar surface spaced from the workpiece support. A plurality of extensible components are supported on the support plate by holders that slideably engage the planar surface in a manner allowing horizontal adjustment in an infinite number of directions within a given area on the plane. The extensible components include staking tools configured to heat stake a workpiece located on the workpiece support. The hot staking apparatus further includes a plurality of adjustable hot air heater assemblies, one for each extensible cylinder. Each hot air assembly includes a holder adjustably secured to the support plate. The holder includes opposing members, one of which is spring-loaded for removably releasably engaging and holding the respective hot air heater assembly.

Abstract: A biangular countersink in a skin panel to be joined to an underlying support member includes a frustoconical base portion defining a large included angle and an extremely shallow outer portion cut at a very small acute included angle. Fasteners usable with the countersink have heads with frustoconical undersides matching the deeper base portion of the countersink and rounded heads sized to fit within the shallow, acutely angled outer portion of the countersink. The combination of fastener and biangular countersink reduces annular grooves or "halos" which typically are formed around conventional flush head fasteners.

Abstract: A method of manufacturing a cork extracting device containing a supporting shaft and a coil-type screw and in which the supporting shaft and the screw are separately made and then connected together, which comprises providing a bottom end portion of the supporting shaft with a coupling portion having a coupling aperture disposed therein, providing a coiled screw with a screw coupling portion at the top end thereof, inserting a guiding tube into the coupling portion of the shaft, the guiding tube having a center hole which extends therethrough and branches at the end thereof as a hooking groove, inserting the screw coupling portion into the hole of the guiding tube and bending the end of the screw coupling portion to engage with the hooking groove.

Abstract: A metal beam with a thermal break between opposite sides and method of making is disclosed. In a first embodiment a huck rivet extends through aligned holes in a pair of opposed beam sections having a base wall portion and a side wall portion. In a second embodiment a punch/swedge operation forms a rivet in the base wall portion of one beam section that extends through the other base wall portion of the other beam section. In a third embodiment a series of spaced, alternating tabs and recesses are formed in the beam section and the tabs overlap and are riveted at overlapping tabs only to form a gap in the formed beam. In a fourth embodiment oppositely opening hooks are formed in the inner sections of first and second beam sections that interfit and are seamed together to fasten the two beam sections with a continuous seam along the center of a composite beam.

Abstract: A preloaded pivot joint has a threaded ball seat that is screwed into an open end of the joint housing to adjust the axial load on the ball stud and consequent torque characteristics. The adjusted position of the ball seat is then maintained by swaging the joint housing inwardly to engage a hexagonal portion of the ball seat that is used to screw the ball seat into the housing.

Abstract: An apparatus for assembling a filter having a peripheral frame and at least one filter media component includes a continuous conveyor for feeding a plurality of filter frames, in succession, to a plurality of workstations, each filter frame having a closed periphery with a generally upstanding leading flap, side flaps and a trailing flap, the workstations including: a) a first station including at least a pair of tools located so as to engage and open the side flaps; b) a second station including a media component supply roll, a cutter adapted to cut a predetermined length of media component; guide elements adapted to guide the cut length of media component for movement away from the cutter; and a reciprocable carriage adapted to receive the cut length of media component, the carriage having a motive drive adapted to accelerate forwardly to a position where the carriage is located directly above an opened filter frame on the conveyor; and forward and rearward flippers adapted to open the leading and trailing

Abstract: An improved method for retaining a separable bearing race to a inner bearing member by rolling over a deformable lip of the inner bearing member into a race abutting bead. The outer edge and inner surface of the separable race are cut away partially by a shallow, continuous, conical relieved portion with sufficient length and radial thickness to accommodate the degree of material swelling just inside of the race that results from the lip deformation process. Consequently, the swelled material does not bind unevenly on or stress the race, which maintains solid and secure contact with the inner bearing member.

Abstract: Apparatus and method for forming compound shaped surfaces. A skin conforming to the visual shape of the surface being formed is prepared from a blank sheet of material that is cut to size and includes any desired stamped-out detailing or notched edges or lines. Disposable strips of material are used to form hems in the skin. A preforming die is used to create tight bends or outer contours in the skin. A liner of the desired size and detailing is formed along with two-shaped side flanges. A plurality of ribs or silhouettes are provided and placed into the skin to form and maintain the desired final shape. The pre-formed liner is then assembled to the skin, the ribs being disposed between the liner and the skin.

Abstract: A fitting includes a stepped passage having a pair of axially spaced apart shoulders, one of which acts as a stop shoulder preventing a bell shaped end of a tube support from being inserted past the stop shoulder, and the other of which has a trepan formed therein which is deformed radially inwardly to wrap around the bell shaped end portion. The trepan has a generally triangular shape cross section including an axial inner wall in alignment with the outer diameter of the stop shoulder and a tapered outer wall intersecting the inner wall at an acute angle. In one form of the invention, the entire outer edge of the trepan is deformed radially inwardly to form an inturned lip that wraps around the bell shaped end portion of the tube support. In another form of the invention, a plurality of circumferentially spaced segments of the outer edge of the trepan are deformed radially inwardly to form individual fingers that wrap around the bell shaped end portion of the tube support.

Abstract: A metal beam with a thermal break between opposite sides and method of making is disclosed. In a first embodiment a huck rivet extends through aligned holes in a pair of opposed beam sections having a base wall portion and a side wall portion. In a second embodiment a punch/swedge operation forms a rivet in the base wall portion of one beam section that extends through the other base wall portion of the other beam section. In a third embodiment a series of spaced, alternating tabs and recesses are formed in the beam section and the tabs overlap and are riveted at overlapping tabs only to form a gap in the formed beam. In a fourth embodiment oppositely opening hooks are formed in the inner sections of first and second beam sections that interfit and are seamed together to fasten the two beam sections with a continuous seam along the center of a composite beam.

Abstract: In a method for producing helically wound lock-seam tubing, a metal strip is fed to a forming heed in which the tubing is formed. In order to prevent lock-seam slip, a clinching roller device forms interlocking spaced deformations on the lock-seam. An apparatus for such production comprises a clinching roller provided with a recess for forming the deformations against a counter roller.

Abstract: The invention provides a method of securing a cover plate (6) onto a steam chamber (4) of a steam chamber and is characterized by the following steps:forming recesses (12) in the cover plate (6) in such a manner that cups (13) are formed which project from the surface of the cover plate,fitting the cover plate (6) onto bosses (9) of the soleplate (2) in such a manner that the bosses (9) engage the recesses (12) of the cups (13), andperforming the plastic deformation of the cups (13) and the bosses (9) in such a manner that the cups are connected to the bosses.

Abstract: An assembly for forming a joint includes a stud joined to a plate. The stud includes a shank portion and a stem portion which extends from one end of the shank portion. The stem portion has a multi-lobular configuration thereon which is formed from a plurality of rounded lobes, each pair of lobes being interconnected to each other by a rounded flute. The plate has an aperture therethrough which has a multi-lobular configuration thereon which corresponds in shape to the multi-lobular configuration of the stem portion. To form the joint, the stem portion is inserted through the aperture such that a portion of the stem portion extends beyond the upper surface of the plate. The extending portion is then riveted to the plate to cause the extending portion to deform and uniformly expand to form a bloom or head and to secure the stud to the plate. The stem portion expands within the aperture to fully fill the aperture when the extending portion is being deformed.

Abstract: There is disclosed a method of manufacturing, in which a diaphragm not provided with an annular rib is fastened to a housing through a spring casing.

Abstract: The method of connecting two workpiece sheets using a rivet, one sheet have a bore, and a counterbore which is frusto-conical and tapers forwardly between a side of the one sheet and the bore, and toward the bore that includes providing a metallic rivet having an axially extending shank defining an axis; providing the rivet with a head having an end face and a forwardly tapered frusto-conical section located forwardly of the end face; installing the shank in the bore and the head in the counterbore so that the periphery of the head end face is substantially flush with the work surface, the end face formed to provide a ring-shaped dome protruding axially in a rearward direction, the dome located to extend about the axis in substantially axial alignment with the outer surface of the shank; the rivet head provided with a peripheral side wall spaced radially from a side wall defined by the workpiece counterbore, and the space between the side walls having a volume A; the dome provided with a metallic volume B; an

Abstract: A joint structure provides a strong contact force between two metal plates that are joined together by the joint structure. A first metal plate is provided with a lug and an opening under the lug. An edge portion of a second metal plate is inserted under the lug and partially press molded with the lug, so as to be press-fitted into the opening in a state wherein the press-fitted portion is held between the opening and the lug. The press-fitted portion of the second metal plate has a cutoff edge portion which is cut off from the remaining portion of the plate, and a connected edge portion which is not cut off from but remains connected with the remaining portion. The cutoff edge portion contacts a corresponding edge of the opening in the first metal plate to ensure and maintain proper lateral registration of the two plates.

Abstract: The method of clamping together two workpiece sheets using a rivet, one sheet having a bore, and a counterbore, which is frusto-conical and tapers forwardly between a side of the one sheet and the bore, and toward the bore, and that includes providing a metallic rivet having an axially extending shank defining an axis, the rivet metal consisting essentially of fine-grained aluminum alloy; providing the rivet with a head having an end face and a forwardly tapered frusto-conical section located forwardly of the end face; installing the shank in the bore, with part of the head in the counterbore, so that the periphery of the head end face projects above the work surface, the end face formed to provide a ring-shaped dome protruding axially in an upward direction, the dome located to extend about the axis in substantially axial alignment with the outer surface of the shank, the ring dome forming a central recess; the rivet head provided with a peripheral side wall spaced radially from a side wall defined by the wo

Abstract: A balloon clip fastening device having a V-shaped groove and a clip receiving hole which is continuous to the bottom of the groove. A balloon clip with the stem of a balloon placed between a pair of clamping members of the balloon clip is inserted into the V-shaped groove and then moved inside the groove so that the balloon clip is closed while being moved, thus holding and closing the balloon. The closed balloon clip is taken out of the clip receiving hole.

Abstract: In a planet carrier (1) comprising two carrier parts (2 and 3), connected together axially, at least one of which is provided with axially extending posts (8) and the other with fitting openings (12) corresponding to the posts (8), and wherein the posts (8) engage in the openings (12) in a form-fitting manner and in addition are connected to one another, the posts (8) extending axially from the one carrier part (2) have a triangular cross-section making use of the maximum amount of free space; the posts (8) are provided at their ends facing the fitting openings (12) with a step (10) of height substantially corresponding to the thickness of the other carrier part (3) in the region of the openings (12); and the fitting openings (12) formed in the other carrier part (3) have a triangular shape (11) cut back by a radius (9), which is connected to the openings (12) by a force fit.

Abstract: A method of securing to an operating lever in the form of an elongated metal plate an operating button made of thermoplastic resin and including a mounting tongue of a generally tubular configuration having a hollow defined therein. An anchor perforation and a stopper pawl are first formed in the operating lever and the operating button is then temporarily mounted on the operating lever with the operating lever slid into the hollow of the mounting tongue until an abutment defined in the mounting tongue and positioned within the hollow is brought into engagement with the stopper pawl.

Abstract: An apparatus for forming a clinch joint in overlapping sheets of deformable material and the related method is disclosed. The apparatus includes a die assembly which cooperates with a punch. The die assembly includes an elongated mandrel having an anvil projecting axially from one end for deforming the sheets of material squeezed between the anvil and the punch. The mandrel is larger than the anvil to define a shoulder thereabout generally perpendicular to the die axis. An expandable die button is coaxially aligned upon the mandrel and is provided with a base ring encircling the mandrel and a plurality of die segments. The die segments each have a head portion and a leaf portion extending between the head and the base ring.

Abstract: A concentric roller pin for use in combination with a roller member of a vacuum cleaner wherein the concentric roller pin includes an inner end, an outer end and an intermediate portion. The inner end of the concentric roller pin is tapered and terminates in a transverse face. The transverse face of the concentric roller pin abuts a corresponding face in a tapered bore of the roller member. The intermediate portion of the concentric roller pin includes an outer knurled surface for securing the concentric roller pin to the roller member. The outer end of the concentric roller pin includes a bearing surface, a bearing lip, an axial indentation, and a beveled edge surrounding the axial indentation. The axial indentation and beveled edge of the outer end of the concentric roller pin facilitates deformation thereof for securing a bearing against the bearing lip and the bearing surface.

Abstract: Method for completing personal computer cards of prescribed accurate dimensions includes nesting side walls with side channels and end walls with end channels to close an enclosure of a personal computer card and then qualifying, or conforming, the dimensions of the closed enclosure to the prescribed dimensions of the personal computer card by forming the nested walls and channels, preferably by impacting the nested walls and channels within forming dies, to attain the critical length, width and thickness prescribed for the personal computer card.

Abstract: An iron having a steam chamber cover connected to the soleplate without the use of additional fasteners or adhesives. The soleplate has a raised steam chamber wall. A top of the steam chamber wall has a channel. A rim of the steam chamber cover is positioned in the channel and a portion of the wall is deformed to sealingly lock the rim in the channel. The cover can also be stamped towards the soleplate to press the cover against ribs of the soleplate inside the steam chamber.

Abstract: A hemming machine for forming a unitary closure structure from first and second metal panels includes a lower and upper die mounted and moveable relative to each other for edge hemming a portion of the periphery of panels to form a unitary structure. The machine includes a non-hemming jointing device mounted adjacent to one of the upper and lower dies and operable for jointing a portion of the non-hemmed periphery of the panels as the panels are held between the dies.

Abstract: An aircraft brake assembly with stators and interleaved rotors with a piston support and cylinders mounted thereon for cooperative action by pistons slidably mounted therein for brake actuation wherein each piston has a piston head with a honeycomb insulator structure composed of cells made of longitudinally extending thin strips of deformed thin strips with non-coplaner surfaces that are parallel to the central axis with a thin cap on one of the end edges and a backup disc contacting the other end edges and to the method of making such honeycomb structure.

Abstract: A secondary connector block of the type that is used to reinforce a port through a thin wall so that a mating primary connector block which has a bolt hole offset to the side of a refrigerant line can be used to connect the line concentrically to the port. The secondary connector block consists of a completely cylindrical base with an intermediate annular groove circling its outer surface. The base can be turned on a lathe, since it is completely symmetrical about its axis. The base is first welded concentrically to the port, which is easily done, since no part of the base overhangs the surface of the wall. The side lobe which contains the bolt hole that aligns with the primary block is attached later by a pair of bendable legs that are formed around and into the groove. The legs may be wide enough to fit very tightly into the groove, in which case the side lobe is first turned to the orientation that aligns the bolt holes.

Abstract: A method and apparatus for forming sheet metal parts of complex configuration and/or sheet metal parts including inherent joints. The part is formed in a continuous run through a stamping press wherein a strip of sheet metal is moved incrementally and continuously through a plurality of successive stations where a plurality of hits are made on the sheet to successively cut and form the sheet to gradually form the individual stamped parts. A special compound die is disclosed for forming a complete loop in each part during the run through the stamping press and for forming a doubled over portion of the part including upper and lower layers, and a clinching station is provided as a station within the stamping press for mechanically joining the doubled over layers of the part together to form a successive plurality of separate parts each having a doubled over portion clinched together.

Abstract: A refrigerant assembly includes a refrigerant housing for receiving and containing refrigerant. In one embodiment, the housing has an upper end cap extending over and covering an open upper end of the housing to define a central cavity for the refrigerant. The upper end cap has a bore extending from an inner surface of the end cap to the outer surface. A pick-up tube extends inwardly into the bore from the inner surface of the end cap and is dimensioned so as to be closely received therein. The pick-up tube includes an annular bead toward its outlet end which is received within a counterbore formed coaxial with the bore from the inner surface of the end cap. The counterbore is dimensioned to closely receive the bead on the pick-up tube. The inner surface of the end cap surrounding the counterbore is then mechanically deformed, preferably by staking, around the entire circumference of the pick-up tube such that end cap material is forced radially inward toward the tube.

Abstract: A method for installing and securing mechanical elements, such as standoffs and pins, in a plate includes the steps of forming suitable apertures for the elements as desired locations in the plate. First ends of each standoff and pin are inserted into their respective apertures with a portion of each standoff and pin extending through the plate. Pressure is applied to the plate, the standoff and the pin to simultaneously secure the elements to the plate. In a preferred embodiment, the end of each standoff extending through the plate is stamped or rolled over to form a retaining flange. The pins are preferably clenched to the plate by pressing an inverted V-shaped ring into the surface of the plate surrounding each pin. An apparatus for installing standoffs and pins in a plate is also provided.

Abstract: A method of joining first and second sheets of deformable material by providing a first sheet having oppositely facing first and second surfaces, providing a second sheet having oppositely facing third and fourth surfaces, placing the second surface on the first sheet facially against the third surface on the second sheet, directing a first discrete element against the first sheet in a first direction to cause a part of the first sheet contacted by the first discrete element to deform and project beyond the fourth surface on the second sheet and directing a second discrete element against at least one of the first and second sheets to at least one of a) cause the part of the first sheet to deform transversely to the first direction to define a first shoulder facing oppositely to the first direction that abuts to the fourth surface and b) cause the second sheet to deform transversely to the first direction to define a second shoulder facing in the first direction that abuts to the part of the first sheet.

Abstract: Apparatus and method for positioning tooling with respect to a workpiece such as for positioning an anvil and clamping members on the inner surface of a fuselage being riveted. The apparatus comprises a tooling head, a frame for supporting the head, a carriage for moving the frame relative to the workpiece including movement of the frame along an axis. The frame is movable radially of the axis toward and away from the workpiece for macro-movement of the head. The head is also movable relative to the frame for movement of the tooling radially of the axis toward and away from the workpiece for micro-movement of the tooling for clamping to and unclamping from the workpiece as well as to clear flange portions of stringers being riveted to the workpiece.

Abstract: An anchor clip for holding an edge of a cushion-supporting upholstery spring in position on a wooden rail of an article of furniture, the clip having a base portion, a leg portion, and reversed curved portion, the reversed curved portion defining a hook which is inwardly lined with a plastic liner. Lateral edges of the hook are flared outwardly to relieve pressures at both sides of the liner. The free end of the hook is folded-over to entrap one end of the liner and subsequently staked. In another embodiment, the hook, at the acme of the curvature, is provided with a cut-out and flared area on each lateral side of the hood for relieving pressure on the liner.

Abstract: This invention is to provide a radiation plate which prevents a generation of resonance phenomenon and being suitable for automation. A plurality of groove are formed in parallel in a base, and a part of a fin consisting of a material having relatively low hardness such as a pure aluminum formed with an engaging portion with concave or convex portion is fitted to each of the grooves. The pressure is applied in perpendicular direction to the vicinity of the grooves of the base to form a pressure deformed portion, and the part of the fin is fixed to the wall surface of the groove of the base by the bonding force of the pressure deformed portion against the fin. Otherwise the engaging portion of a fin formed as convex portion is fixed in the groove of the base by means of the pressure force.

Abstract: A coupling (10) for connecting hoses or other conduits carrying refrigerant material in an automobile air conditioning system has a male end (12) and a female end (14). The male end has an extending portion (26) which is accepted into an aperture (50) in the female end when the coupling ends are connected. A pair of o-aring seals (34), seal the ends in fluid tight engagement when they are connected. Finger portions (24) on legs (22) of a leaf spring (20) mounted on the male end, engage steps (68) on the female end to hold the coupling ends together when engaged. The legs nest in slots (64) to prevent relative rotation of the coupling ends. Tapered portions (66) of the slots provide for ease of engagement of the coupling ends. The legs of the leaf spring are biased apart as the coupling ends are pushed together until the finger portions engage the steps. Disengagement is achieved by spreading the legs of the leaf spring with a special tool (72) and separating the coupling end.