Abstract: A needle shield comprising an elongated tubular housing having a central bore, means at one end for detachably mounting the shield to the hub of a syringe assembly, and means defining an elongated generally cylindrical chamber in the end of the housing opposite the mounting means. An inner end communicates with the bore and an insert made of resilient impermeable pierceable material is snugly supported in the chamber. The chamber is of a diameter slightly greater than the diameter of the insert and includes a tapered wall portion at the inner end and has a section of smaller diameter than the insert to provide a tight generally hermetic sealing relation therewith. The wall of the chamber opposite the inner end is deformable to permit ease of assembly and deformation after insertion of the plug to firmly seat the plug in the chamber.

Abstract: In a gas generator for a vehicle protection system having an outer jacket and an inner housing attached thereto through an edge union and consisting of an ignition carrier and a thin-walled propellant vessel, which inner housing together with a primer and a propellant charge forms a hermetically encapsulated separate structural unit, an edge lip of the ignition carrier bent radially inward over the collar type enlarged propellant vessel edge is provided, which, when the inner housing is installed in the outer jacket, is pressed axially against a stepped abutment surface of the outer jacket and is thereby held in tight press-fit engagement on the collar-like vessel edge. Due to this the gas generator has, in terms of manufacture, a very simple construction in the region of the ignition carrier attachment to the propellant vessel but yet is highly burstproof.

Abstract: A method of producing an oil seal comprises the following steps: a slicing step in which a seal ring is sliced from an end of a tubular billet of a resin material in a predetermined axial thickness; a fixing step in which the radially outer portion of the seal ring is fixed in the support member; and a bending-out/thread-forming step in which the radially inner portion of the seal ring is bent out of the plane of the radially outer portion of the seal ring thereby forming a tubular seal lip, and sequentially after forming of this seal lip, a screw thread is formed on the inner peripheral surface of the tubular seal lip. The fixing step is conducted by a press having an upper die and a lower die, in which the seal ring is fixed in the support member.

Abstract: Restricting outlet fluid flow from a pressure vessel includes an inlet/outlet member having a passage of predetermined dimension communicating with the pressure vessel. The pressure vessel is initially filled with fluid through the passage at a first flow rate. A restrictor is adapted for close receipt in the inlet/outlet member passage and includes an opening having a dimension substantially less than the inlet/outlet member passage. An outer end of the inlet/outlet member is thereafter deformed to retain the restrictor insert within the passage. Fluid flow released from the pressure vessel must exit through the restrictor opening at a second flow rate substantially less than the inlet first flow rate.

Abstract: A method of making a shaft seal ring starts with a tube, optionally provided on its outside and/or inside with hydrodynamically-acting return elements, as may be cut from a hollow cylinder. The tube is axially slipped along a form with a continuously increasing diameter until its leading or lower end is shaped into a flange in the radial direction. The flange may be simultaneously joined to a reinforcing ring.

Abstract: A composite clamping shell for securing the socket of an electric cigar lighter to a panel of an automobile, has a rolled sheet-metal body of tubular shape, with open ends and a clinched seam. Attached to the body is a drawn, sheet metal sleeve having a rolled screw thread. The body has inwardly displaced stop shoulders to position the sleeve, which latter has an annular out-turned flange abutting the stop shoulders. Edge portions of the body end are laid over the out-turned flange of the sleeve to hold it captive and prevent relative movement. The body is stamped out of a piece of flat sheet metal stock and thereafter rolled into the desired cylindrical shape. The sleeve is produced by drawing operations, from flat stock, reduced manufacturing cost is thus realized.

Abstract: The disclosure is directed to the method of addition, in a fixed and inexpensive way, of a cylindrical sleeve to a key for an anti-theft wheel lug nut having a complementary key pattern formed on a surface thereof, and to the resulting key. The cylindrical sleeve of the key is formed separately from the key and then rigidly attached onto a groove formed in the key itself. The sleeve acts as a guide for the key and prevents the dismounting thereof during the torquing and untorquing of the complementary patterned lug nut.

Abstract: Contacting an underlying region (e.g., doped silicon) through an access hole in an overlying dielectric layer (e.g., p-glass) formerly required flowing the dielectric to smooth the edges of the hole, so that aluminum would deposit smoothly into the hole. The present technique smoothes the side of the hole by forming a smoothing region on the sidewall. Improved aluminum coverage results, as well as allowing a smaller contact head, if desired. Improved contact resistance can be optionally provided by depositing a more conductive layer on the underlying layer prior to forming the sidewall.

Abstract: A machine is shown which assembles a barrel, spring, piece of lead, lead plunger, barrel tip and eraser into an automatic pencil. The steps of assembly include: Pressing the lead plunger onto the lead. Placing the plunger and lead into the spring and tapping the plunger to turn its extending tabs into the coils of the spring. Placing the plunger, lead and spring into the barrel. Extending the spring from the barrel and pressing the barrel tip onto the spring and then pressing the tip into the barrel. Pressing the eraser into the barrel.

Abstract: A pipe connection in which an improved method and apparatus for forming a quick-coupling connecting nipple for plastic pipe is disclosed. A plastic pipe section having an annular groove perpendicular to the axis of the pipe is disposed about the periphery of the pipe section at a longitudinal distance from the first end of the pipe section. A steel sleeve is friction fitted about the plastic pipe section and a groove is rolled about the outer periphery of the sleeve to present an annular shoulder disposed within the inner periphery of the sleeve. The shoulder of the sleeve snaps into the groove of the plastic pipe section. The other end of the sleeve is crimped inwardly into the pipe surface so that the sleeve is substantially flush with the outer diameter of the pipe section.

Abstract: The swivel bearing comprises a cup secured on a part of the apparatus and provided with a cylindrical wall which is bent inwardly to hold the outer bearing against the flange on another member, which flange rests upon another set of bearings in the cup.

Abstract: A bearing assembly having bearing surfaces pre-loaded towards each other, the bearing surfaces being originally made in slightly non-conforming geometry and dimensions over the majority of their surface areas in sliding engagement, the areas of the bearing surfaces in engagement being thus less than the total available areas. During use, and through progressive wear-in of the bearing surfaces in engagement, the bearing surface areas in engagement are progressively enlarged with progressive conformity in geometry and dimension, the conforming surface areas being constantly kept in engagement by the elements in the assembly adapted to provide bearing pre-load.

Abstract: The method relates to manufacturing contact spring sockets with a plurality of radially inward bowed contact springs (9) clamped at one end in an approximately cylindrical socket body (1), formed by a thin-walled deformable sleeve. The straight contact springs, formed by sections of a contact spring wire, are introduced into the socket body and made fast at their front ends to a central head (10) at the front end of a line connector (2) by deformation of the socket material. The free ends of the contact springs (9) are brought into supporting abutment on an annulus (5) at the pin insertion end.

Abstract: The invention relates to a can-type housing made of metal, as a semi-finished product, such as is used, for example, for electrolytic capacitors. Furthermore, the invention relates to a process and a device for reducing the diameter of and flanging such a can-type housing. In the conventional way, the diameter of a can-type housing of this type was reduced from below in the direction of the upper open can edge. As a rule, flanging is carried out by a separate device. The invention improves the conventional measures by rewidening under dry conditions the can-type housing pre-widened under wet conditions. According to the process, the can-type housing provided with the housing widening is then closed from the can edge axially downwards so as to reduce its diameter, this process step being supplemented, in addition, by a further flanging step carried out in the same device.

Abstract: A composite clamping shell for securing the socket of an electric cigar lighter to a panel of an automobile, has a rolled sheet-metal body of tubular shape, with open ends and a clinched seam. Attached to the body is a drawn, sheet metal sleeve having a rolled screw thread. The body has inwardly displaced stop shoulders to position the sleeve, which latter has an annular out-turned flange abutting the stop shoulders. Edge portions of the body end are laid over the out-turned flange of the sleeve to hold it captive and prevent relative movement. The body is stamped out of a piece of flat sheet metal stock and thereafter rolled into the desired cylindrical shape. The sleeve is produced by drawing operations, from flat stock. Reduced manufacturing cost is thus realized.

Abstract: An anti-static switch lock wherein a terminal assembly having the desired configuration of rotor and contacts is secured to one end of a hub. The other end of the hub has an inboard lipped boss forming, in cooperation with the hub end, a circumscribed radial groove. A keylock assembly includes a barrel, one end of which has a chamber to receive the boss of the hub, and a key operated, rotatable plug. The hub, having the terminal assembly attached to one end, is positioned such that the groove is disposed within the chamber of the barrel. A number of stakes are formed in the barrel, the stakes engaging the groove to firmly secure the hub to the barrel. The plug is inserted into the barrel, the end of the plug interlocking with the shaft of the terminal assembly rotor to effectuate switching of contacts.

Abstract: Method of crimping the locking ring of a ball joint. According to the invention, a prestress is applied to the bearing bush (17) to obtain a certain frictional torque between the latter and the spherical pivot while the locking ring (18) is placed on the bush (17); the punching tools (28) comprising a double die (30) are then actuated simultaneously in the direction of the socket (15) so as to deform the latter along two approximately circumferential and parallel zones located on both sides of the ring (18) to surround it without displacing it.

Abstract: A vessel with a metal skin particularly well suited for cosmetic use is provided. The metal skin covers the shoulder region from the base of the neck over the side wall and extends inwardly over a substantially planar metal plate adhered to the bottom of the container. The metal skin is formed into a cup shape and the jar is dropped in up-side down and crimped over the metal plate on the bottom. Pre-forming the shoulder region of the metal skin avoids unsightly stress marks in the upper exposed portion of the container.

Abstract: A sorbent type filter assembly (10) which is made by sequentially placing a first resilient perforated plate (40), a first retention filter (36), a sorbent bed (34), a second retention filter (38), a second resilient perforated plate (42), and a cover (14) within the cylindrical portion (16) of a canister shell (12). The cover (14) is forced downwardly to compress the sorbent bed (34) and to resiliently spring bias or stress the first resilient perforated plate (40). While the parts are held together under compression, an annular edge portion of the cylindrical shell is rolled into a circumferentially extending groove on the canister cover to hermetically and mechanically hold the parts together in their assembled and compressed relationship.

Abstract: A semi-automatic hand-held pneumatic gun for installing plastic rivets. The gun includes a handle equipped with a manual trigger, and an associated magazine which serially feeds a plurality of stored rivets. Repetitive semi-automatic cycling of the gun is established by cooperation between a triggered air system, an intermediate pneumatic system, and a pneumatic barrel assembly. The trigger valve establishes a plurality of pneumatic pathways between it a manifold and the intermediate pneumatic system, activating first and second intermediate valves disposed within the intermediate valve pneumatic chamber. The barrel chamber includes an elongated ram and an associated piston. When the trigger valve is in a rest position, a pneumatic path is established whereby the first intermediate valve is biased to a rest position establishing another pneumatic path biasing the piston to a rest position.

Abstract: A method and apparatus for securing an eraser to a pencil while deforming a heath mounted at one end on one end of the pencil and on the other end partially receiving the eraser, the sheath being subjected to deforming forces directed on the one hand toward the pencil and on the other toward the eraser. In order to provide a fastening of the sheath to the pencil and to the eraser, the pencil is guided along a path while at least the sheath is rolling, and the sheath is subjected to the deforming forces at least intermittently while rolling. The apparatus for performing the method comprises a pressure gap decreasing height between two parts that are movable relative to one another. The pressure gap is larger at the inlet and smaller toward the outlet than the outer diameter of the sheath in its underformed state.

Abstract: A cylindrical knob for installation on a shaft and a method for fastening a decorative disc shaped end cap to a tubular knob body to make the cylindrical knob. The cylindrical knob includes a plastic tubular body having an outer sleeve and an inner core. The inner core is spaced from the outer sleeve at the cap receiving end of the body to form an annular slot. The inner core has a cap supporting surface located adjacent the inner slot and a shaft receiving socket located at the opposite end of the tubular body. An undercut surface is formed in the inner core adjacent to the cap supporting surface and accessible from the annular slot. Passages extend from the socket end of the tubular body to the annular slot. Recesses are formed in the inner core beneath the undercut surface and are spaced generally uniformly around the inner core and open into the annular slot. A disc shaped end cap having a depending skirt is positioned on the cap supporting surface with the skirt located in the annular slot.

Abstract: The cutting edge of a bit of a rotary drill comprises an agglomerate of natural or synthetic diamond mounted at the free end of a shank freely rotatable in a socket in the body. Preferably the agglomerate and the free end of the shank are cold swaged together and preferably a resilient spring is interposed about the shank between the body and the free end.

Abstract: The bearing assembly has an externally-threaded retainer bearing threaded into a housing of deformable metal for rotatably supporting and maintaining a worm gear shaft in position. The retainer bearing has a plurality of flat sides with a spanner wrench slot at the outer end of each side whereby a flat side and spanner wrench slot of the retainer bearing can be located at a particular location relative to the housing and material of the housing is deformed into the space between the flat side of the retainer bearing and the threaded bore of the housing as well as into the spanner wrench slot to securely lock the retainer bearing in position.

Abstract: In a shock absorber unit for vehicles of the double-tube type a piston rod guiding member is provided at respective first ends of a cylinder and a container surrounding the cylinder. The first end of the container engagingly surrounds a radially outer face of the piston rod guide member. The container is tube-shaped and has substantially constant wall thickness along its total length. The radially outer surface of the piston rod guiding member is provided with at least one radially inward directed recess or at least one radially outward directed projection. The first end of the container is deformed such as to engage this projection or recess respectively. A sleeve member engagingly surrounds the first end of the container. This sleeve member is also provided with a deformation which deformation is in engagement with the deformation of the container.

Abstract: A heating valve is provided which comprises a valve body with a plurality of connecting branches, a valve seat disposed inside the valve body, a bonnet seated in a connecting branch opposite to the valve seat, a valve stem passing through the center of the bonnet, a valve plug disposed at the end of the valve stem, a tube having an inner annular bottom extension and an inner annular top extension, with the tube surrounding the stem and pressing with its bottom against a step of the bore of the bonnet, O-rings disposed against the top face and the bottom face of the tube, a stop-ring attached to the stem holding a compression spring against the bottom of the tube and a packing nut bolted into the bonnet, surrounding the stem and pressing against the O-rings for forming seals.

Abstract: A novel method of leak proof attachment of the outer edge of a flange-type sheet metal element in the bore of a steel cup-shaped valve tappet acting as a hydraulic play-compensating element for a combustion engine comprising (a) reducing the diameter of the bore of the valve tappet in two steps from the open end, the axial spacing of the two steps being greater than the thickness of the sheet metal element, (b) placing the outer edge of the sheet metal element on the second step and (c) simultaneously axially applying pressure on the first step with a die and heating by electric resistance with leads connected to the die and the hold-down ram and apparatus for the process and the product produced thereby.

Abstract: An apparatus for controlling braking liquid pressure produces a proportionate reduction in an input liquid pressure supplied from a master cylinder before it is output to a rear wheel cylinder. The apparatus includes a body which is formed of a single member and which is formed with a bore in which a plunger slides. An annular retainer having an inner diameter less than that of the bore is fitted into the bore at its end nearer the master cylinder. One end of the plunger extends through the annular retainer.

Abstract: If articles are to be fastened to a web of elastomeric material and one does not want to apply the disadvantageous ways of providing holes in the web, or clamping a thickened portion of the web, or glueing, or vulcanizing, then very good results can be obtained by placing the web on a flange of an article which is provided with one or more inwardly tapered recesses, whereupon one places a counter-member on the web, which counter member has a complementary appearance with regard to the flange. The invention is particularly usefull when applied to expansion tanks and tire valves.

Abstract: A method is disclosed for clamping together a first and a second part, the first part having a flange thereon, the second part having a groove which may receive the flange. The method includes the steps of placing a deformable seal on the bottom of the groove of the second part, placing the flange of the first part on the deformable seal as the flange is guided into the groove, clamping the first and second parts together while deforming the seal until the seal approximately fills a space defined between a lower surface of the flange and the walls forming the groove, and deforming certain parts of a vertically upright standing area of the second part by rolling the certain parts of the area over an upper surface of the flange into generally horizontal positions while leaving other parts of the area generally in their vertically upright condition to thereby form an approximately corrugated edge on the second part, which holds the first and second parts together in a clamped condition.

Abstract: A pneumatic spring counterbalance extensible link including a closed end cylinder with an end connector a piston and rod assembly within the cylinder and maintained therein by the crimped over end portion of the cylinder retaining a rod bushing and rod to cylinder seal. The cylinder is pressurized prior to assembly of the complete piston and rod into the cylinder. The piston assembly includes orifice by-pass means either in the piston periphery or in a piston ring, and the piston may include a fail-safe provision in the event the orifice is clogged. A crimping die assembly is used in assembling and completing final assembly of the counterbalance components while simultaneously maintaining the link in a pressurized environment, utilizing sealed arrangement between the crimping dies to maintain pressurization of the interior of the dies and the counterbalance components prior to assembly of the components.

Abstract: The disclosure relates to a method of manufacturing an oil seal element from polytetrafluoroethylene and the like. A tubular billet having concentric inner and outer cylindrical surfaces is faced off at one end. An arcuate slit is cut in the end face of the billet at each of a plurality of angularly spaced positions. Indexing of the billet is synchronized with rotation of the slitting tool. A disk of desired thickness having arcuate slits on one of its faces is then sliced from the billet, thereby also facing the billet for the next slitting sequence.

Abstract: A joint is provided between one tube and another tube without the necessity of a heavy thick-walled metal coupling. The joint includes first and an optional second enlarged portions on a first tube with the second enlarged portion near an end of the second tube. A first shoulder is provided between the first enlarged portion and the main body of the first tube. A second annular shoulder is provided at the junction between the first and second enlarged portions. The end of the second tube slips into the first enlarged portion of the second tube and the second tube is then axially compressed so as to form an annular bead which acts against and is contained by the second enlarged portion of the first tube. This axial compression provides both a mechanical interconnection so that the tubes will not axially separate despite fluid pressure or mechanical force, and also provides a fluid tight seal at the annular bead and the second shoulder or second enlarged portion.

Abstract: In an oil pump inlet screen assembly adapted to be immersed in an oil sump and comprising a filter screen including a housing and a lift pipe adapted to be inserted at one end into an oil pump opening, the improvement wherein the housing and lift pipe are molded integrally of plastic material, and wherein the screen assembly further comprises a metal eyelet received over the pipe end and adapted to be press-fitted into the pump opening. The eyelet includes coaxial cylindrical portions respectively disposed internally and externally of the pipe end and an external flanged end portion which captures a circumferential rib on the outside of the pipe both to retain the eyelet on the pipe end and to function as a stop to limit press-fit insertion of the pipe end into the pump opening.

Abstract: The invention relates to a method for manufacturing a packing container from a seamless tubular blank of plastic material having a wall thickness greater than the wall thickness of the packing container to be produced therefrom. One end of the tubular blank is sealed and an annular edge ferrule is joined to the other end. The tube is heated until softened and then caused to expand in a mold to a predetermined shape.

Abstract: A fluid filter (10) of the spin-on automotive type has a housing with a unitary closure member (18). The unitary, or one-piece, closure member (18) includes provision for mounting of the filter and for fluid flow therethrough. Two opposed annular flanges (78, 80) of the closure member receive between them the marginal edge (72) of the filter shell in a fluid-tight crimped engagement. This arrangement facilitates manufacture of the filter by providing support to the shell wall (68) during the crimping operation and also provides an exceptionally strong joint between the shell (12) and closure member (18). Another embodiment of the filter has a closure member (18) with a marginal edge (76) having a portion of reduced thickness which facilitates its crimped engagement with the filter shell (12). Methods of making such closure members attain a unitary closure member without welding operations.

Abstract: A cylindrical bushing is positioned over the shank of a screw member prior to forming threads on the shank. After the threads are formed, the outside diameter of the threads is greater than the inside diameter of the bushing so that the bushing is held captive on the shank of the screw. A cylindrical sleeve is then inwardly deformed so as to be permanently secured to the bushing. The opposite end of the sleeve facing away from the head of the screw shank extends beyond the bushing and forms a skirt which can be peened over the peripheral inner edge of a panel opening to secure the sleeve to the panel, thereby holding the screw captive to the panel. The end of the bushing next to the underside of the screw head has an increased internal diameter portion for accommodating a spring serving to bias the head and shank away from the bushing so that when the screw is unfastened, it will pop outwardly and release quickly any member to be secured to the panel.

Abstract: A pinion gear assembly for a starter motor which may be assembled utilizing a simple and convenient assembly process. The pinion gear assembly includes a pinion gear, a cup, a rubber washer, and a spline follower. The closed end of the cup has an opening which passes the body and teeth of the pinion gear, but does not pass intertooth fillets at one end of the pinion gear, thus keeping the pinion gear retained in the cup. The rubber washer is retained between the pinion gear and the spline follower, and acts to absorb shock and allow some movement to align teeth of the pinion gear with teeth of a mating ring gear or flywheel. In assembly, the spline follower is held in alignment with the pinion gear, and the material of the cup is pressed radially inward over the rear surface of the spline follower, forming retaining step portions for retaining the spline follower in the proper alignment.

Abstract: A method of forming mounting for an inspection cover or similar in a sheet metal tank wherein threaded fasteners such as machine screws are inserted in holes burst in the sheet metal around the edges of the opening in the tank wall. The burst metal portions are then pressed into the thread of the screws to hold the screws in place as studs for the mounting of the cover. A reinforcing flange is simultaneously pressed into the sheet metal around the periphery of the opening.

Abstract: The present invention is directed to the method of making a dependable, low cost, low pressure accumulator characterized by the provision of a bladder support sub-assembly secured to an end cap member by an annular weld line, the connection between the noted components being effected prior to insertion of the assembly and end cap into a cylindrical pressure vessel component, whereby the opposed surfaces in registry with the weld are exposed to ambient temperatures, eliminating the danger of damage to the bladder in the course of welding. The bladder sub-assembly and end cap are thereafter inserted into and weldingly connected to a pressure vessel, the open mouth portion of which is inwardly deformed to overlie the end cap and retainer portion of the bladder sub-assembly, dependably to secure the components together and to effect the desired seals between adjacent components.

Abstract: The lower wall of the pre-formed jacket of a bullet is thicker than the upper portion of the jacket and the uppermost or open end of the pre-formed jacket is deformed on its interior surface to provide a plurality of flat surfaces which are joined by a plurality of axial grooves. An inwardly-extending annular ring having a downwardly sloping upper surface and an upwardly sloping undersurface is formed at a shoulder by compression between the lower, thicker wall and the thinner wall adjoining it and, where the core is pressed into the jacket, the annular ring is deformed so that its undersurface becomes perpendicular to the wall of the jacket, thus engaging and holding the base of the core within the jacket. The core and jacket are subsequently deformed into a conventional dynamic shape.

Abstract: A pipe coupling for application to plain end pipe and pipe pile by a driving force. It provides much greater tensile strength than the double sleeve type of pipe coupling disclosed and claimed in my U.S. Pat. No. 4,053,247 in that it provides greater strength under tension. In one embodiment, a pair of tapered wedge rings are disposed in spaced coaxial relation within an outer cylindrical sleeve having corresponding tapered inner surfaces to provide tapered annular sockets into which pipe sections may be forced or driven to expand the diameter of the pipe. An annular shoulder on the sleeve forms the bottom of the annular sockets. Under tension, the tapered rings wedge the pipe against the outer sleeve to resist axial removal of the pipe from the coupling socket. In another embodiment, the tapered wedge rings are disposed in coaxial relation outside the cylindrical sleeve to form annular tapered sockets which serve to reduce the diameter of the pipe as it is driven into the socket.

Abstract: Disclosed is a pipe coupling joint comprising an interference fit coupling of unthreaded pipe sections. The end of the outer pipe in a telescoped interference fit coupling is radially compressed to form a groove in the inner pipe. The crimped end is compressed into the groove to securely couple the pipe sections together. Lined pipe joints and methods and apparatus for forming the improved interference fit joint are also disclosed.

Abstract: An improved locking type spark plug gasket in which the locking lugs are of such configuration as to lie within the vertical height of the sealing folds of the gasket. The configuration especially adapts it to receive a synthetic resinous coating applied after manufacture, and facilitates installation on that type of spark plug having an undercut area at the base of the threaded shank portion thereof.

Abstract: A pipe joint specifically adapted for an oil lamp inlet screen, and a method of assembly therefor, comprising a metal pipe adapted at one end to be connected to an oil pump housing and a filter screen including a molded plastic screen housing having an aperture adapted to receive the other pipe end. A metal eyelet is molded into the plastic housing and extends therefrom to embrace a circumferential rib formed on the outside surface of the pipe. An annular resilient sealing ring surrounds the pipe and is captured by the eyelet in sealing compression between the circumferential rib and the housing.

Abstract: A thermally sensitive actuator consists of a pressure cylinder comprising a tube, two end closure elements each secured to a respective end of the tube, a body of flowable material contained within the tube between the end closure elements, and a piston extending through a through-bore in one of the end closure elements and projecting into the body of flowable material. During assembly, the said body of flowable material is disposed within the tube between and abutting said end closure elements, while at least one of said end closure elements is not secured to the tube, so that said body of flowable material determines the distance apart of said end closure elements. The end closure elements are secured to the tube by displacing the peripheral edges of the ends of the latter inwardly.

Abstract: A screw tube assembly is disclosed for use in a screw jack or the like. The screw tube assembly comprises a hollow tube member in one end of which is formed a recess so as to reduce the tube member wall thickness. Into this recess an annular bushing is inserted. A tip portion of the recessed tube wall is crimped over the received bushing outer end to lock the bushing in the tube against axial movement. A chordal portion of the bushing and overlying tube is then displaced radially outwardly to form an external tube assembly key and to lock the bushing in the tube member against rotational motion.

Abstract: An HF-coaxial connector including a connector body and a coupling ring outside the connector body: the connector body has an outwardly projecting flange; the coupling ring has an internally projecting flange and the flanges respectively project outwardly and inwardly sufficiently that the flanges lock to block separation of the connector and coupling ring; and a process for forming the connection by deforming the coupling ring inwardly to define the flange which engages the connector body.

Abstract: An electromagnetic sound generator, such as an automobile horn, has a thin-walled ferromagnetic housing closed at one end by a membrane which carries an armature extending into an electromagnetic coil mounted in the housing. The rim of the membrane is embraced by a deformable peripheral housing wall bent back upon itself to form an outwardly projecting peripheral flange with a bight portion radially spaced from the membrane, the housing wall extending axially beyond this flange to engage a resonator adjoining the membrane. The armature has an eccentric lug which coacts with a contact spring of an interrupter in series with the coil and which can be limitedly adjusted, by rotation of the armature about its axis, to shift its point of engagement with the contact spring for varying the moment arm of the spring and thus the natural frequency of the sound generator.

Abstract: An improved dauber having a applicator pad which may have its central portion radially tensioned or which pad may have a predetermined degree of looseness. The improved dauber comprises a discrete retaining ring which is forced into a U-shape channel of the dauber along with the peripheral portion of the pad so that the peripheral portion of the pad is secured intermediate at least a portion of the retaining ring and an adjacent portion of the wall of the U-shape channel. Also, the peripheral portion of the pad may be partially wrapped about the retaining ring to provide more resistance to being loosened by rubbing. The retaining ring may comprise shaped portions such as serrations, teeth, hooks, or points which engage the peripheral portion of the pad during assembly of the dauber so that the central portion of the pad may become radially tensioned. The retaining ring and the peripheral portion of the pad are locked in the U-shape channel by substantially closing the channel.