Abstract: Device for fastening a first component (42) with a through opening (44) on a second component (40) with a through opening (18) being essentially rectangular in cross section, comprising a first fastening element (10) which comprises a radial flange (12) on one end and a shaft section (16) with rectangular cross section, which is insertable into the through opening of the second component and comprising a second fastening element which relative to the first fastening element is at least partly axially moveable, which second fastening element comprises an axial bore for receiving a fastening screw. The first fastening element comprises at least one first section (18) of a first, harder material and at least one second section (20) of a second, softer material, wherein the second fastening element upon screwing the fastening screw is pressed against the second section of the first fastening element and thereby deforming it in a sealing manner.

Abstract: A method for baffling and/or sealing a vehicle structure by providing a unitary structure including a sealing body with an integrated fastener.

Abstract: A sealant mold for sealing a domed nutplate unit particularly at a lower region about an adhesively attached interface with a substrate such as an aircraft fuel tank wall. The sealant mold is formed from a lightweight plastic material, and includes an inner cap in combination with an outer skirt to define a gap or trough for receiving and supporting a metered quantity of a curable sealant material. The mold is fitted onto a dome of the nutplate unit with an inner cap inboard edge landed onto a dome shoulder. The outer skirt is then displaced downwardly about the landed inner cap to extrude the sealant material about the lower region of the nutplate unit particularly such as the adhesively attached interface with the substrate. The sealant material is allowed to cure, after which the sealant mold can be stripped quickly and easily from the cured sealant material.

Abstract: A mounting structure is provided which is capable of easily attaching a heat sink irrespective of a thickness of an LSI (Large-Scale Integration circuit) mounted on a printed circuit board. Each female screw metal fitting of each female screw portion is attached on an upper surface of a cylindrical gel in a stacked manner and a lower surface of the cylindrical gel is attached to the printed circuit board. An end portion of each male screw is made to pass through each through-hole of the heat sink so as to be screwed into each of the female screw portions. With a progress of screwing therein, each of the female screw portions is elevated and the cylindrical gel is pulled and elongated. Since a restoring force occurs when the cylindrical gel is elongated, the heat sink is pulled by each of the female screw portions toward the LSI. Thus, variations in height can be accommodated.

Abstract: The invention relates to a wiper system with a wiper drive (1), which is comprised of a wiper motor (2) and a gear (3). A wiper arm shaft (14) for a wiper arm (19) can be driven via the output shaft (5) of the gear (3). Linking points (31, 32, 33) for accommodating the wiper drive (1) on a surface (24, 40) are arranged in the housing area (7) of the wiper drive (1). The linking points (31, 32, 33) of the wiper drive (1) each feature a decoupling element (41, 42, 43), in which fastening elements (55) to mount the wiper drive (1) either on a vehicle body (24) or on a screw-down surface (40) are accommodated.

Abstract: A force connection strut (1) of a chassis of a passenger car or utility vehicle is provided for the non-positive connection between a chassis and a wheel carrier, preferably an axle strut or a chassis control arm. An elongated basic body (G) and at least two end-side mount supports (5) are provided for introducing and leading out forces.

Abstract: A ratcheting fastener system such as for point of purchase displays. A bolt has a shank with a head end and a distal end, and a plurality of bolt threads on the shank, each thread having a thread start at the distal end. A nut has a bore with a plurality of thread segments in the bore adapted for engaging the bolt threads when axial force is applied to the bolt with the distal end inserted in the nut. Deflection of the nut thread segments occurs in controlled locations. The bolt and nut can be formed as a single unit connected by a frangible link.

Abstract: A fastener having a shank and head, the latter formed with a recess in its lower surface. A gasket is positioned in the recess, which it partially fills until the screw is employed to joint two elements and the gasket is compressed so that it fills the entirety of the recess, thereby preventing the ingress of undesirable materials.

Abstract: A mounting bolt for use in mounting toilet stools has upper and lower ends with an elongated threaded shank therebetween. An elongated planar head is on the lower end of the bolt and has a width similar to the diameter of the shank, and a longitudinal length larger than the diameter of the shank. The head has a center axis extending along its length. An indicia mark is on the upper end of the bolt visually indicating the position of the center axis to assist the placement and tightening of a threaded nut on the upper end when the position of the head is concealed when the nut is being threadably mounted on the upper end of the bolt.

Abstract: A holding element 1, for fastening a component 18 to a carrier 4 having an opening 3, includes an insertion piece 2 made of a soft elastic plastics material, and a thrust part 11 made of a rigid plastics material. The insertion piece 2 is formed with a bevelled or cone shaped thrust face 12, which is held in interfacing engagement with a complimentarily bevelled or conically shaped thrust face 7 of the thrust part 11 by elastically deformable ribs 13 and 14. When a screw 15 is inserted through a longitudinal bore 8 of the insertion piece 2 and into an axially aligned bore 10 of the thrust part 11, and is tightened, the insertion piece is compressed to expand radially to anchor the holding element 1 within the opening 3 of the carrier 4.

Abstract: The invention relates to an expansible fixing plug (10), which is manufactured as a two-material fixing plug from a relatively soft and a relatively hard plastics material. To achieve a low insertion torque of an expansion screw as the expansible fixing plug (10) is expanded, yet nevertheless a high anchoring force, the invention proposes constructing from the relatively hard plastics material expansion fingers (22), having cross-sectional areas increasing in size in the direction towards the leading end of the expansible fixing plug (10), which expansion fingers are embedded in expansion tongues (14) of the relatively soft plastics material having a cross-section corresponding to a circular segment, the expansion tongues (14) being connected with one another by dilatation zones (16). (FIG. 8).

Abstract: A one-piece window insert fastener for releasably securing a window insert to a window sash having a generally rectangular shape with a plurality of openings about its periphery, the insert having a generally rectangular-shaped frame with a single pane structure fixed therein and having a plurality of bars each having a terminal end portion and each terminal end portion having a channel therein, the fastener being elongate and having a longitudinal axis, the fastener consisting of: a head portion adapted to engage the window sash and removably insertable into one of the openings in the window sash; a tail portion adapted to fixedly engage the window insert and removably insertable into one of the channels in the window insert; and a compression portion between the head portion and tail portion, the compression portion biasing the head portion against the window sash and allowing movement of the head portion toward the tail portion when the window insert is inserted in the window sash and moving the head porti

Abstract: A fastener for multiple layers having alignable apertures therethrough. The fastener includes a first head, a second head, and a connector. The first head passes through the alignable apertures in the multiple layers and snugs against a first extreme outermost layer of the multiple layers. The second head opposes the first head and snugs against the other extreme outermost layer of the multiple layers. The connector connects the first head to the second head and is disposed in the alignable apertures in the multiple layers and maintains the first head snugly against the first extreme outermost layer of the multiple layers and the second head snugly against the second extreme outermost layer of the multiple layers and thereby retains the multiple layers between the first head and the second head.

Abstract: A manufacturing method for U-bolts comprising the steps of (a) winding a linear, tape or cloth member made of fiber reinforced plastics in which at least a part of the fiber is oriented in three-dimensional directions around a mandrel having a substantially oval or rectangular section (b) making a pipe molded article by hardening the linear, tape or cloth member wound around the mandrel, (c) cutting the hardened pipe molded article into slices transverse to a longitudinal axis of the mandrel, (d) separating the molded article cut into slices into at least two U-shaped portions, and (e) forming screw portions at tip portions of a pair of separated U-shaped portions.

Abstract: A fixing clip is provided for fixing an attachment member to a panel having an attachment hole. The fixing clip includes a grommet having a plurality of extensible leg pieces for engagement with a periphery of the attachment hole, a pin to be pressed into the grommet and a seal cap for accommodating the grommet. The seal cap has a plurality of extensible pleats formed in respective places corresponding to the leg pieces of the grommet. When the leg pieces of the grommet spread and engage with the periphery of the attachment hole of the panel through the seal cap, the pleats of the seal cap stretch out to follow the spreading leg pieces, so that the seal cap can be deformed easily. Therefore, there is no fear of reducing the engagement force of the leg pieces with the periphery of the attachment hole of the panel.

Abstract: A fastener for a reverse fed panelboard circuit breaker is taught. Briefly stated, a resilently deformable pivoting member is disposed between side barrier fins in a two pole panelboard breaker. A pin at one end of the fastener is placed through a screw hole which is contained in the panelboard and disposed between the side barriers of the panelboard breaker, with the fastener rotatably urged towards the breaker so as to, when fully rotated causes the breaker retention tab to be urged against the panelboard retention hook and also for the fastener to lay against and come in contact with the edge of the panelboard breaker thereby preventing removal of the breaker without first removing the fastener.

Abstract: A fastening assembly (10) that is weatherproof and that does not detract from the appearance of the object (16) into which it is driven is disclosed. The fastening assembly includes a fastening device (12) such as a nail that includes an elongated shank (18) and a head (20) on one end of the shank, and a cover (14) formed of water-tight material that can be positioned over the head of the fastening device for sealing the head from water, air, sunlight, and contaminates. This prevents the head of the fastening device from rusting when the fastening device is driven into an object. The cover can be colored the same color as the object that it is driven into so that it blends in with the object and does not detract the appearance of the object.

Abstract: A plastic fastener for insertion inside a complementary opening in a part in the course of manufacture, in particular, a panel fastener for insertion inside a prismatic hole formed in a vehicle body part; the fastener compromising a head, and a shank in turn compromising elastic engaging members which snap on to respective sides of the opening and are oriented in at least one plane crosswise to the shank; the fastener being characterized in that the shank comprises an appendix projecting axially in front of the elastic engaging members with respect to the insertion direction of the fastener inside the opening; the appendix being pointed, and presenting at least one rib of a width substantially equal to the diagonal extension of the prismatic opening, and of a thickness much smaller than the width; and the rib being oriented, width-wise, in a plane forming an angle with the plane of the elastic engaging members.

Abstract: Apparatus for mounting a housing for an inflatable vehicle occupant restraint module to a vehicle steering wheel armature includes at least two snap-in fasteners for holding the housing in assembled relation with the armature. A resiliently compressible member is interposed intermediate the steering wheel armature and the housing to permit overtravel of the snap-in fasteners relative to the armature during assembly with the housing and to thereafter exert a force upon the housing to maintain a firm engagement of the snap-in fasteners with the housing and with the armature, and thereby maintain engagement between the housing and the armature.

Abstract: An improved end-link for a suspension system for a motor vehicle, such as an automobile or a light truck, is used to accommodate adjustment between first and second elements, such as a stabilizer bar and a control element, in the suspension system. The end-link includes a connecting member which has an unthreaded portion of a predetermined diameter and a threaded end portion; a first washer; first and second grommet members for engaging top and bottom surfaces, respectively, of the first element; an end cap for engagement with the second grommet; a sleeve for engagement with the end cap and for engagement with a third grommet that grips the top surface of the control element; a fourth grommet for engaging the bottom surface of the control element and a second washer.

Abstract: A fastener device is provided for connecting a first component having a first aperture therein to a second component having a second aperture therein. The fastener device includes an axially extending first shaft portion for connection within the first aperture of the first component and an axially extending second shaft portion for connection within the second aperture of the second component. A connector portion extends between and interconnects the first and second shaft portions to each other. The shaft portions are each made of a first material and the connector portion is made of a different second material. The second material forming the connector portion is sufficiently flexible to permit axial and transverse movement of the first and second shaft portions relative each to allow for coaxial misalignment of the first and second apertures and to provide noise and vibration isolation between the first and second components in the assembled condition.

Abstract: An assembly for mounting loudspeakers in a panel. A hole is formed in the panel. An outer ring having a flange is secured in the hole with the flange on one side of the panel. An inner resilient ring is collapsed, passed through the outer ring to the other side of the panel, expanded and secured to the outer ring. This locks the rings together. A loudspeaker is secured in the flange.

Abstract: A self-locking nut for eye glasses excellent in assembling efficiency into which a male screw is fitted to secure a material between the head of the male screw and the self-locking nut itself, comprising a first member having a female thread portion formed with a female thread in which the male screw is screwed and a pressing end face for pressing the material when the male screw is screwed in, a second member which is continuously formed on the other end face of the first member away form the material and which has a self-locking hole concentric with and connected to the threaded hole, and a third member continuously formed on the end face of the first member closer to the material and having a bushing portion which can be inserted into a hole in the material and which is formed with a through hole connected to the threaded hole of the first member; a moisture-proof nut comprising a sealing element having one end closed to bring the other end into contact with the material to waterproof the main body of the

Abstract: The invention employs a post type fastening member that provides, at one end, an insertion friction connection to the circuit card and at the other end, extending through the heat sink, a compression spring means that urges the heat sink toward the circuit card. A plurality of the post type fasteners are positioned around the periphery of the chip package to retain the heat sink parallel to the circuit card and compressing the chip package. The packaging structure of the invention permits larger area heat sinks than the chip package area to be supported by the circuit card with the only relationship with the chip being that of a compression thermal transfer contact and radiation shield.

Abstract: A device for fastening to the body of a motor vehicle an assembly comprising a support plate, is of the type comprising a bolt-and-nut assembly. The threaded shank of the bolt passes through a hole in the support plate, a hole formed in a damping ring which is interposed between the support plate and a first face of a bodywork element of the vehicle, and a hole in the bodywork element itself. The bolt is screwed into a nut which is located beyond the opposite face of the bodywork element, and which is received in a nut retaining cage. The damping ring and the cage are made integrally with each other as a single assembly member of elastomeric material or rubber; the portion of this assembly member that defines the cage deforms in expansion while the nut is being tightened on to the bolt.

Abstract: A repair plug for sealable insertion into puncture holes in tires has a conical shank carrying one or more buttress threads which may extend onto a head portion adapted for rotation with a screwdriver.

Abstract: A sealed retainer grommet apparatus for securing a standard retainer member to a vehicle body panel. The apparatus generally includes a frusto-conical portion, an intermediate portion and a top portion. Both the top portion and a first end portion of the frusto-conical portion are generally circular in shape and have outer diameters which are larger than an outer diameter of the intermediate portion, which is also preferably circular in shape, to thereby form a channel. The apparatus 10 is secured to the body panel by inserting the frusto-conical portion through an opening of the body panel where the channel receives a section of the body panel member lockably therein. A bore extends through the top portion, the intermediate portion and at least a portion of the frusto-conical portion to define an interior sidewall portion.

Abstract: A fastener is disclosed for attaching first and second members. The fastener includes a longitudinal shaft portion having first and second segments each having a cross-sectional shape substantially conforming to the peripheral shape of first and second openings formed in the respective members. The longitudinal length of each segment substantially conforms to the depth of said first and second openings. A cap member is formed at a first end of the shaft portion adjacent and outside the first segment. The cap member is larger than the periphery of the first opening. A spacer member is formed on the shaft portion between the first and second segments. This spacer member has an outer periphery larger than the first and second openings to inhibit passage therethrough so as to secure the first member on the first segment of the shaft portion between the cap member and the spacer member. The fastener also includes an abutment member positioned on the second end of the shaft portion outside of the second segment.

Abstract: Detachable device for joining together objects having holes intended to come into alignment, comprising:a tubular member made of an elastically deformable material and capable of passing through the holes when it is in the expanded state and of widening in order to be locked in the holes,an expansion rod sliding inside the tubular member and having a widened head,a body fastened to the tubular member and having a bore which extends the bore of the tubular member, and a support surface substantially at right angles to said bore,a locking member which can be immobilized at any point on the rod,an elastic member capable of exerting a determined force tending to move the body away from the locking member.The tubular member, the body and the elastic member preferably form a single piece.

Abstract: A fastener which releasably retains a first member in relation to a second member. The fastener is frangible for fracture upon the application of a tensioning force thereto permitting the first and second members to which the fastener is engaged to be displaced relative to one another. The fastener, once fractured, is retained in the corresponding first and second members to which it was originally attached to prevent the generation of loose pieces. An installation tool is also provided for installing the fastener into the first and second members. The fastener includes a shank which fractures into a first and a second segment. A frangible portion of the fastener is spaced along the shank between the first and second segments and defines such segments for providing a predetermined fracture point. Non-planar engaging portions on the first and second segments retain the fastener in the corresponding first and second members once engaged therewith even after fracture of the fastener.

Abstract: A fastener is provided which comprises a head component; a barbed shank component; and a resilient linking means connecting the head and shank components. The fastener has a longitudinal opening adapted to receive a tool for the application of force in a driving engagement with the shank component. Also provided is a method of fastening a plate member to an internally ribbed work piece using this fastener by engaging the fastener with the ribbed aperture in the work piece; inserting the tool into the longitudinal opening; and applying force to the shank component sufficient to cause axial displacement of the shank component against the resilient biasing of the linking means to maintain the head and shank components in axial tension.

Abstract: The mounting stud of an accumulator is secured within a central opening of a base pan mounted elastomeric grommet by way of a metal sleeve having outwardly extending protuberances that grip the inner walls of the elastomeric grommet and inwardly extending protuberances that grip the threaded stud. The protuberances are angled in such a way that both the stud and the sleeve are easily inserted into their mating component but subsequent removal is substantially prevented.

Abstract: An endless belt formed by a connector and a finite length of hollow tubing or solid tubing with recesses at each end. The connector is characterized by a biting edge that has a larger diameter than the inside diameter of the tubing. It is readily flexible away from the direction of insertion of the edge of the tube. The biting edge is formed as a feathered or an erose outlying portion of the base at each of two gripping heads. Once the gripping heads are inserted tension on the tubing causes the feathered edges and adjacent portions of the gripping head to bite into the internal wall of the tubing and form an improved grip therewith.

Abstract: An improved adhesive mounted nutplate assembly and related installation method are provided for secured mounting of a nutplate or the like onto a substrate, particularly at a blind side of the substrate in alignment with an access opening. The nutplate assembly includes a nut member having a resilient fixture pin received therein, with the nut member being adapted for adhesive mounting onto the blind side of the substrate with the fixture pin extending through the access opening. A pulling force applied to the fixture pin draws the nut member with a positive force against the substrate. The fixture pin is sized to bind within the access opening when released to maintain this positive force for the duration of an adhesive cure period, after which the fixture pin can be forcibly drawn through and removed from the nut member. A preferred nut member comprises a nutplate having a floating nut carried by a base which is adapted for adhesive mounting onto the substrate.

Abstract: An apparatus to collect metal particles as generated (galling) by a fastener connection to a workpiece, the fastener having a head and an axially forwardly extending shank, the combination comprising an O-ring about the head; the head forming an outwardly open annular recess spaced from the shank to receive the bulk of the O-ring; the O-ring projecting from the recess to engage the workpiece and form with the head a recess portion to receive and retain the particles.

Abstract: A split nut is made of elastic material that deflects under manual pressure. Each nut half has a projecting bead and a keyhole recess. The beads removably fit into the keyhole recesses to hold the nut halves together. Radial fins permit rotation by air jet and enlarge the size of the nut halves to make manual disassembly easier.

Abstract: A multipart mold having a resilient retainer engageable with a pin attached to a mold part to hold the mold part in a desired position relative other mold parts.

Abstract: A non-metallic acoustic and thermal isolating fastener mount comprising a housing 20, a threaded locking plate 30, an elastic diaphragm 40, and an unthreaded spacer 50 is disclosed. The housing 20 includes a cavity 24 and a pair of outwardly extending arms 22. Mounted in the cavity 24 is the treaded locking plate 30. The treaded locking plate 30 is positioned such that a pair of posts 34 lie between a pair of outwardly extending arms 29 of an access opening 26 formed in the top of the housing 20. The elastic diaphragm surrounds the access opening and includes apertures through which a threaded hub 32 and the posts 34 extend. The unthreaded spacer 50 includes a hub having outer diameter that allows it to be press-fit around the hub 32 of the threaded locking plate 30. The housing 20, threaded locking plate 30, and spacer 50 are formed of a high-strength, high-temperature plastic, preferably a fiber reinforced polyamide-imide resin, such as Torlon.TM..

Abstract: An article of knock-down furniture that can be easily assembled by an end-user comprises a plurality of pieces and contact joint arrangements that prevent unwanted separation of the pieces, while permitting the pieces to rotate and flex relative to each other. The contact joint arrangements also have lateral flexibility to permit the pieces to be coupled and shaped into a contour. The contact joint arrangement has a flexible tube that is extended through a continuous bore through each of the pieces. A hanger bolt is threaded into each end of the tube. A cap nut is threaded onto each hanger bolt and is in bearing contact with the end pieces. Each of the cap nuts are tightened against the end surface of the end pieces in order to place the tube in tension. The pieces are, consequently, held in longitudinal compression between the two cap nuts, while remaining free to rotate about the longitudinal axis of the tube.

Abstract: A protective cap for fastener heads includes a preformed member formed of a naturally tacky compound of unvulcanized butyl rubber, a reinforcing layer of a non-woven polyester fabric, and a silicone-coated polyethylene release liner. The preformed member has a dome-shaped central portion and a surrounding generally flat annular flange. The reinforcing layer of the polyester fabric is disposed over a top surface of the preformed member to form a homogeneous cap construction, and the release liner covers the tacky bottom surface of the preformed member to prevent the cap from adhering to surfaces until ready for use. A plurality of the protective caps are formed in a manipulatable sheet unit and are maintained thereon by the natural tackiness of the unvulcanized butyl rubber compound.

Abstract: A method and apparatus for locking the drive hubs of a forms overlay station in a laser electrographic printer to its transparent forms overlay drum includes counterboring a plurality of holes through the drum into the hubs, inserting a resilient member such as an O-ring into each counterbored hole, and compressing the resilient member to form an interference fit among the compressed resilient member and an interface formed within the counterbored hole by the drum and hubs.

Abstract: Resilient mounting apparatuses are useful for isolating the engine generated vibrations and noise from the frame. The mushroom style resilient mounting apparatuses are generally over designed and add to the cost without any additional benefits. The subject resilient mounting apparatus includes a rebound pad designed to provide high fatigue capacity yet low initial stiffness in a small space and to permit the use of simple manufacturing processes to make it. The primary support includes a skirt which cooperates with the rebound pad to keep foreign material from migrating into an annular space. Thus the subject resilient mounting apparatus meets the functional requirements while avoiding the manufacturing complexity or the extra cost of unneeded material.

Abstract: A threaded fastener comprises a head component for the application of torque to the fastener, an externally threaded shank portion, a resilient linking member for interconnecting the head component and the shank portion a certain axial distance apart and for resiliently biasing against axial displacement of the shank portion from the head component a distance other than such certain axial distance, and a torque transmitting mechanism for transmitting torque from the head component to the shank portion. The torque transmitting mechanism is able to transmit sufficient torque from the head component to the shank portion to cause axial displacement of the shank portion in an aperture in a work piece against the resilient biasing of the resilient linking member, whereby the resilient member is elongated and put in axial tension.

Abstract: An adjustable footstrap for attachment to the surface of a riding device such as a sailboard, or the like. There is an inner strap member comprising a pair of centrally overlapping straps having provision for attaching outer ends thereof to the surface of the riding device and provision for adjustably fastening inner ends thereof together. There is also an outer padded sheath for covering the inner strap member between the outer ends. The padded sheath comprises a generally rectangular piece of a fabric-covered foam material having provision on facing opposite edges extending between facing opposite ends for releasably fastening the facing opposite edges together. The padded sheath further has provision for releasably fastening the sheath to the inner strap member.

Abstract: Splices between conductors in of an aerial telephone cable are covered by a closure located within a terminal. The closure has a large central section connected via tapered joints to two end sections. A settable liquid encapsulant is received in the central section. The closure has two halves joined by a flexible hinge that runs lengthwise along a first longitudinal edge. Two rigid tabs of nonuniform thickness running lengthwise along a second longitudinal edge are secured by snaps through apertures in the tabs. The snaps have tapered sections that clamp the varying thickness rigid tabs along their lengths to prevent leakage of liquid encapsulant. The end sections have open cell foam strips fitting snugly between the cable and the end section walls which are fixed with the liquid encapsulant. The encapsulant sets within the open cell foam to form a barrier to passage of contaminants into the central section.

Abstract: A blind fastener is disclosed comprised of a rivet having an axial internally threaded bore and a threaded pin to be received within the threaded bore of the rivet. The rivet has a head at one end thereof, and preferably a chamfered bore at the other end thereof. The rivet is provided with a plurality of cuts in the outer wall of the rivet, extending axially along the wall of the rivet and forming zones of weakness in the rivet wall. The threaded pin has an outwardly protruding portion, preferably bell-shaped, and a head at the other end of the pin, such as a square head, for threading the pin through the rivet. When the pin is threaded into the rivet, the protruding bell-shaped end portion thereof is received within the chamfered bore of the rivet. The rivet-pin assembly is positioned in a hole of parts to be fastened.

Abstract: A reusable retainer includes a multi-layered generally annular assembly defining a central opening formed therethrough. The assembly is composed of at least one relatively resilient layer and at least one relatively rigid layer with the said rigid layer being split to allow the assembly to radially expand or bend.

Abstract: A one-piece plastic reusable push-in fastener for insertion into an aperture in a workpiece comprising a head portion and a shank portion, the shank portion being integrally formed to one side of the head portion with its longitudinal axis extending away from the head portion and having a particular cross section and a transversely extending fin section intermediate the length of the shank on one side thereof whereby the fin section cooperates with the particular shank cross section to inhibit withdrawal of the fastener from a particular workpiece aperture and to centrally locate the longitudinal axis of the shank with the central axis of the aperture by forcing the periphery of the shank cross section against the inner wall of the workpiece aperture.

Abstract: A fixing in a wall is made by drilling a hole, inserting the pin of a nozzle mounted on a hot melt gun into the hole and injecting molten polypropylene into the space between the pin and the hole. The polypropylene is allowed to solidify and the nozzle is removed leaving a wall plug ready for the insertion of a screw.Three embodiments of a nozzle especially adapted for use in this process are described.

Abstract: An electrical connector including an insulator and a number of contacts for mounting on a substrate such as a printed circuit board. As disclosed, the electrical connector includes an elongated insulator block carrying contacts in the form of pins, an end of each of which is received in a printed circuit board aperture to be soldered to the printed circuit board. The elongated insulator block further includes a series of holes, each intermediate an adjacent pair of contacts of the connector, precisely located relative to the contact locations, to facilitate positioning the connector for insertion of the pins into a printed circuit board. The insulator block is notched adjacent each of the holes to facilitate breaking the connector to a desired length, and hence containing a desired number of contacts. The insulator block further has generally semi-cylindrical indentations at each of its ends.