Abstract: A method of forming a polymer insulator is disclosed. The improvement includes the steps of: setting a formed body, having a construction such that a pre-form material is arranged around a rod and end caps are arranged at both end portions of the rod, between an upper die and a lower die, each die having cavities for forming sheds and sheath portions of the polymer insulator; and forming the sheds and the sheath portions of the polymer insulator by means of a compression forming by connecting the upper die and the lower die with compression pressure; wherein the end cap has a shape such that it is accommodated in the cavity for a shed formation.

Abstract: A standoff connector for fastening two plates in spaced relation, including a body and a stud for insertion into the body. The body has a base and a trunk projecting upward from the base, and also has a central opening for receiving the stud, with a sleeve carried in the central opening with a plurality of spaced resilient fingers having upper ends fixed in the trunk and lower ends spaced from the trunk for outward radial movement, the lower ends of the fingers having inwardly directed tips for gripping the stud. The stud has a shaft for positioning in the body opening and a handle at one end for rotating the stud, with a shaft having a major diameter adjacent the other end and a minor diameter between the major diameter and the handle for receiving the tips of the body sleeve, with the body and stud having interengaging elements for limiting rotation of the stud in the body.

Abstract: A system for fixing lines, in particular electrical or optical lines, is constituted by a support including octagonal perforations, the octagonal perforations being suitable for co-operating in pairs with clamps for fixing one of the lines in such a manner as to hold the line on the support on a predetermined path; and for receiving separators for separating the lines in such a manner as to prevent any contact between lines.

Abstract: A substrate alignment and retainer clip (10, 20) is provided which includes an anchor (12, 13, 40), a retainer (11, 42), and a biasing device (11, 41), joining and aligning the anchor (12, 13, 40) and retainer (11, 42), for biasing the retainer (11, 42) towards the anchor (12, 13, 40).

Abstract: A circuit board standoff including a body adapted for disposition between first and second boards so as to maintain a predetermined minimum spacing between facing sides thereof; a stem fixed to the body and adapted to engage an opposite side of the first board; a fastener fixed to the body and adapted to engage an opposite side of the second board; and a ground mechanism retained by the standoff and including a first electrical contact adapted to engage the first board, a second electrical contact adapted to engage the second board, and an electrical connector connecting the first and second contacts.

Abstract: An electrically insulated truck cover manipulator assembly which includes two arms, a drive mechanism, and a tie-rod. The tie-rod is attached both to a flexible cover which moves longitudinally along the length of a truck body or trailer and to the two arms. In one embodiment, the arms each include an upper support member and a lower support member joined by an electrically insulating connector. Both the upper and lower support members may be filled with dielectric foam. The drive mechanism moves the arms about a pivot causing the tie-rod joining the upper ends of the upper support members to pull the flexible cover over the length of the truck trailer or body and its contents. In the event either of the upper support members or the tie-rod makes contact with overhead power lines during operation, the insulating connectors prevent electricity from flowing from the upper support members to the lower support members and thus to the truck frame.

Abstract: A solder spacer device and method for use in positioning a grid pin array having a plurality of pins over a circuit board having a plurality of pin holes respectively receiving the pins. The spacer is pulled through a central opening in the circuit board after the pins are soldered in the holes to the circuit board. The spacer has a cylindrical body which is positioned in the central opening and has a plurality of radial legs having respective flexure portions for separating the pin grid array from the circuit board during soldering and for folding into the central opening during extraction through the central opening after the soldering is finished.

Abstract: Electrical apparatus including a housing enclosing a printed circuit board mounting a plurality of electrical components. The printed circuit board is detachably mounted on a pivotal support which permits rotation of the circuit board between various positions in the access opening to the housing. The support is a one piece plastic member which frictionally receives the printed circuit board in an elongated slot.

Abstract: The present invention pertains to standoff devices used to hold a circuit board a fixed distance from a mounting surface such as another circuit board. The present invention divides the standoff into two interacting members. The first member has a base and two arms disposed to define a receiving slot between the two arms. The second member is comprised of a head portion, a tapered portion, and a tongue portion. The second member is slidably disposed within the receiving slot of the first member, and is capable of being locked into place in two distinct locking positions within this receiving slot. By sliding the second member from the first locking position to the second locking position, the standoff is locked into place between the circuit board and the mounting surface. The present invention discloses a secure locking system utilizing locking projections and cooperating depressions to accomplish this locking function.

Abstract: A spacer which serves to space and connect two panels which are arranged parallel, one behind the other, in particular for uniform distance setting between the front panel of a switchboard and a backside, parallel printed circuit board. The spacer includes a socket and a plug member which is engageable with the socket. The socket exhibits, concentrically around its central axis, at least four guides that are open in the direction of the plug member and which have a depth defined by stop faces of the socket. These guides form groups of varying depth, which lie radially symmetrically to the central axis, and the plug member has on a side thereof facing the socket, projections which are rotatable into suitable positions into the guides of a group.

Abstract: A securing device for securing two boards firmly to one another with a predetermined distance therebetween. The securing device is integrally formed of resin and comprises a resilient reverse retention member to support a first board, a rectangular linkage member, resilient legs provided on both sides of the linkage member to engage the first board, and a support base to support a second board thereon. Characteristically provided with recesses at the foot of both widthwide sides of the linkage member, the securing device of this invention is enabled to have the advantages of both having a rectangular-shaped linkage member and an improvement in strength.

Abstract: A drive connection for the arm (2) of a windscreen wiper comprises a metallic wiper arm (2), a spindle (5) by which it is driven and means (7) for electrically insulating the wiper arm (2) from the spindle (5), thus electrically isolating the arm (2) and blade of the wiper from the rest of the vehicle.

Abstract: A low conductivity mounting stud for attaching an electronic component to a base structure such as a heat sink eliminates the need for several insulating washers and other insulators around the shaft of the mounting stud. The mounting stud may be composed of ceramic material such as partially stabilized zirconia. The mounting stud is secured with a press-on fastener such as a "Tinnerman nut".

Abstract: An apparatus made of a single piece of resilient material has notches (101) with narrow openings, on the same side, on each end. An indentation (103) opposite each notch (101) creates a narrow, flexible segment (106) on each end of the apparatus. A printed circuit board inserted in one of the notches (101) will cause an end section (107) adjacent the notch (101) to flex, thereby allowing the board to enter into the narrow notch opening. Once the board has been inserted, the resilient material of the apparatus will cause the flexed end section (107) to attempt to return to its original shape. This will force the end section (107) up against the board thereby holding the board in place within the notch (101). This simple design allows the apparatus to be manufactured relatively inexpensively.

Abstract: An insert for a hydro pole switch is disclosed. The insert has a rod member extending the length of a hydro pole and terminating at a handle. The rod member is formed from spaced inline rod portions with adjacent end portions separated by a predetermined spacing. The insert has an element formed from electrically insulating material having a first flange mounted on each end thereof; a pair of coupling members are provided for engagement with the first flanges and each are attachable with a corresponding end portion, whereby the insert enables the handle to be electrically isolated from its associated switchgear in a simple and economic manner.

Abstract: A standoff and retainer for use in mechanically and electrically connecting two or more printed circuit boards in a parallel spaced type arrangement. The metallic standoff is constructed in the form of a sleeve partially closed at one end. The plastic retainer is also formed in the shape of a sleeve but includes a male connector at one end. The standoff is attached to a printed circuit board by advancing the connector end of the retainer into the open end of the standoff until the connector snaps into engagement with the hole in the partially closed end wall of the standoff and a mounting hole in the printed circuit board.

Abstract: A fastener for securing a circuit board to a chassis or another circuit board of an electronic appliance in a spaced relationship by a predetermined fixed distance. The fastener comprises a plunger having an inverted pyramid-shaped head and a rod extending downwardly from said head, and a fastener body including an isolating member having at the center thereof an opening for receiving said plunger therein and a pair of locking members located at the opposite ends of said isolating member with a pair of support plates interposed therebetween. When the plunger is inserted into the fastener body, the locking members are expanded outwardly by the plunger so that a circuit board and a chassis or another circuit board are secured to each other in a predetermined spaced relationship.

Abstract: A circuit board assembly including a first board; a second board substantially parallel to and separated from the first board; a spacer comprising a body portion disposed between the boards and having a shoulder portion engaging on one side of the first board a surface area directly adjacent to an opening through the first board, a stem portion extending through the opening, and a latch portion engaging another side of the first board opposite to the one side thereof; an actuator retaining the latch portion in a position providing the engagement with another side of the first board; and a fastener engaging opposite sides of the second board and thereby preventing any substantial movement thereof relative to the first board.

Abstract: A substrate support of integral construction, by which substrate (20, 39) can be fixed angularly to a plate (22, 40) and which comprising a base (3, 33), a fixing portion (1, 31) for coupling the base (3, 33), a first projection (7, 37) extending from the base (3, 33), and a second projection (8, 38) extending from a wall (9) extending from the base (3, 33). The substrate (20) is gripped by the base (3, 33), the first projection (7, 37) and the second projection (8, 38) so that the end of the substrate (20) can be inserted into the space between the first projection (7, 37) and the second projection (8, 38) and the substrate (20) can be fixed angularly to the plate (22, 40).

Abstract: A conductive spacer (1) comprises a spacing member (4) and upper and lower fixing members (7,8) to secure upper and lower boards (5,6) a certain distance apart. The upper and lower fixing members (7,8) include upper and lower supporting members (9, 17a,17b) for pressing against the inner surfaces of the upper and lower boards (5,6), and upper and lower locking members (12a,12b,19a,19b) extending from the center of the upper and lower supporting members (9,17a,17b) for passing through holes (34,35) in the upper and lower boards (5,6), resiliently expanding outward, and for securing outer surfaces of the upper and lower boards (5,6). The upper and lower fixing members (7,8) and the upper and lower locking members (12a,12b,19a,19b) thus support the boards (5,6). One end of a conductive member (3) is attached to the lower supporting members (17a,17b) on the lower board (6 ), and the other end of the conductive member (3) extends to contact the upper board (5).

Abstract: In a hearing aid formed of a printed circuit film, the operating elements at the hearing aid housing are also utilized for holding the printed circuit film. Given employment of a multi-layer printed circuit film, the operating elements, and particularly a switch or a potentiometer, can be arranged between the layers such that the required spacing between the layers is guaranteed.

Abstract: A running gear for an electric rolling stock has coupling devices for coupling the output shafts of traction motors to the input shafts of reduction devices which are provided with electrically resistive elements so as to prevent return current from flowing therethrough. Therefore, the coupling devices possess a higher level of resistance than the grounding resistance of the grounding devices, thereby enabling any return current to be prevented from flowing through the coupling devices. Thus, the running device can be kept free from electrolytic corrosion.

Abstract: A screw retainer comprises a head portion, and a leg portion depending therefrom and provided with locking means, a screw retainer bore being formed so as to extend from the top of the head portion through the head and leg portions. An engagement portion projects from the upper surface of the head portion such that the screw retainer bore is open at the top of the engagement portion. The top of the engagement portion is provided with temporary engagment pawls for engaging an upper surface of a panel to be secured to a base panel within which the screw retainer is disposed by means of its dependent leg portion.

Abstract: A two-part securing unit wherein the interconnection of the two parts is assured once they are assembled. The securing is useful in securely fixing at least two printed circuit boards in parallel relation, the securing unit being attachable to a chassis or to another form of fixed plate. The two parts of the securing unit are relatively pivotable, whereby the outermost board may be moved to an open state to allow easy repair or inspection. The securing unit is capable of holding the two plates rigidly in the open state, such that repair or inspection may proceed without the necessity of manually supporting the outermost board in its open state.

Abstract: A mounting member for mounting a first member having a mounting hole upon a second member having a stud secured thereto in a state of being spaced apart from the second member includes a stud holder section having a head having a diameter larger than that of the mounting hole and also having an inserting portion extending from the head, having securement means for securing the free end of the stud and being inserted through the mounting hole, and a spacer section having a plurality of legs for clamping the first member in cooperation with the head of the stud holder section and also having a spring portion. When the spring portion is urged toward the stud holder section in the longitudinal direction, it is compressed. When the biasing force is released, the spring portion elastically restores to the initial state. The spacer section is penetrated by the stud and interposed between the first and second members.

Abstract: Support for printed circuit boards formed by a column (1) comprising at least one base (3) on which a printed circuit board (6) is to be supported, a collar (4) which is inserted in a hole (5) of the plate, a coupling member, a damper (7) being inserted between the base (3) and the circuit plate (6), the compression of the said damper being ensured by the coupling member.

Abstract: A printed wiring board is mounted with an electronic component which is provided with grooves at the opposite sides thereof. The grooves are constructed so that the electronic component can be mounted on the printed wiring board in either the vertical or horizontal directions. Preferably, the grooves have a cross-shaped configuration, one extending vertically and one extending horizontally. The grooves may be formed on tongue pieces projecting from the electronic component body. The groove may be provided with a resilient piece. Another groove may be provided on the body so as to be capable of changing the direction of terminals.

Abstract: An insulator device to be inserted between a power transformer and a conductive chassis. Insulative washers are monolithically formed with the spacer. One washer is formed for each screw holding the transformer to the chassis. Each washer has a cylindrical protrusion which fits into a hole in the spacer. The screw extends through the washer, protrusion and spacer so as to be insulated from the transformer.

Abstract: A device for spacing boards, like printed circuit boards, or a board and a mounting surface, like an electronic device chassis, a fixed distance apart. The device is constructed to interlock with other such devices so that boards mounted with these devices may be stacked. A peg-and-notch coupling provides horizontal stability, while a bottom anchor and top latch secure the lower and upper boards, respectively, providing stable vertical stacking.

Abstract: An improved standoff for use in assembly of an electronics device includes a generally cylindrical body with a bore hole through the longitudinal axis. A plurality of reinforcing fin-shaped members disposed radially about the outer surface provide additional rigidity to the structure as well as providing surfaces at each end of the standoff upon which circuit boards may rest. A plurality of clips may be moved under compression and passed through holes on a circuit board. Once they have passed through, they will elastically return to their normal position thus loosely, but securely, holding the circuit boards together. This allows the standoffs to hold the circuit boards together, without the use of additional nuts and bolts and conventional spacers, and also allows the passing of final assembly screws through the longitudinally bore of the spacer.

Abstract: An anchor member is formed of an axially extending core member enclosed from one end toward the other by an electrically non-conductive plastics material jacket. The anchor member can be secured in a borehole in a receiving material by a hardenable mass. The jacket at the one or leading end of the core member has a tip located on an extension of the core member axis, so that the tip abuts the center of the base of the borehole. With the centering action afforded by the tip, damage to the jacket is prevented as the anchor member is inserted into the borehole.

Abstract: A fastener for plates includes a leg portion for engaging with a first mounting plate, a flange portion integrally secured to the leg portion, a head portion projecting from the flange portion for holding a second mounting plate between the flange portion and the head portion, a cut-away portion formed by cutting away part of the head portion from its outer periphery towards its axis for allowing the head portion to be inserted into a mounting hole of a second mounting plate by a rotating action, and a resilient portion for pressing against the inner periphery of the mounting hole of the second mounting plate which is secured by the flange portion.

Abstract: The invention is directed to a mount of a resiliently elastic, planar printed circuit board in a housing having a curved shape and composed of two parts. The end regions of the printed circuit board are secured such that a temporary positional change of the printed circuit board is impossible. This is achieved by having at least one resilient fastening element in the form of a shackle projecting from one of the housing parts overlaping the printed circuit board and/or pressing thereagainst in interlocking fashion at at least one end region of the printed circuit board. The shackle has a length such that the printed circuit board conforms to a shape adapted to the shape of the housing part accepting it.

Abstract: A bolt guard assembly utilizes a central sleeve and first and second end caps to separate a metal fastening nut and bolt from a pair of wood products that have been treated with a preservative. The bolt guard assembly is formed of a plastic material and prevents the metal fastener from coming into contact with the treated wood products. The central sleeve is sized to telescopingly receive crimped barrel ends of the two end caps. Each of these end caps is structured having a fastener head or nut receiving pocket which receives the head or nut of the fastener and isolates them from the wood. Fastener life is greatly increased through use of the bolt guard assembly.

Abstract: A securing unit for securing at least two different substrates spaced apart at a predetermined distance comprising a first securing portion for securing a first base plate, a second securing portion which forms an arrow shaped head and for securing a second base plate, and a support base portion for supporting said first and second securing portions in which the height of the first securing portion of the securing unit has been remarkably reduced. With this construction, the projection of the first securing portion of the unit is not impaired when removing unnecessary remnants or solder or when cleaning the surface of the first base plate, while the securings of the base plates by the first and second securing portions of the securing unit according to the present invention has been remarkably increased.

Abstract: A board fastener is provided to detachably secure and support one or more boards such as printed circuit boards in position spaced apart from a chassis or from each other. Furthermore, the board fastener can securely support a second board to prevent the same from slipping out of the fastener. The board fastener includes a spring bar and a thrust-up member for pushing the mounted second board up, thus allowing the second board to be easily removed from the fastener.

Abstract: An improved stand-off device is disclosed which is used to control the spacing between adjacent planar elements in electronic instrumentation. The stand-off device includes a resilient, hollow shell member and a rigid, cylindrical inner element. The shell member has at least one slot extending from one end, and has a top interior cylindrical surface, a bottom interior cylindrical surface, and a threaded intermediate interior surface. The inner element has a conical expander portion and a drive portion with a threaded exterior surface which is complementary to the threaded interior intermediate surface of the shell member. The slotted end of the shell member is adapted for insertion into an aperture in a planar member from one side of that member. The inner element is adapted for insertion into the shell member from the same side of that member, whereupon the conical portion forces the slotted end of the shell member to expand and engage the perimeter of the aperture in the planar member.

Abstract: A speaker having a slotted flange is attached by a robot to printed circuit board mounting posts. The posts are slotted and dimensioned so the post slots are slid into engagement with the flange slots in interlocking arrangement. The posts and flange are dimensioned so that a robot hand can slide the flange between the posts in interference fit such that the relatively rigid posts are torqued apart flexing the board. When the flange and post slots engage, the board flex forces snap the posts and flange in locked engagement.

Abstract: A panel is mounted between parallel spaced apart frame members by a pair of retainer members having a length greater than the spacing between the frame members so as to project through selectively spaced openings in the frame members. Each of the retainers is provided with a slotted channel for receiving an edge of the panel. Opposing ends of the retainer are provided with a pair of bifurcated legs which may be flexed toward one another to permit the snapping of the retainer into the selectively spaced slots in the frame members. The retainers are movable within the slots during assembly to firmly engage opposite edges of the panel in the slotted channels. Electrical connectors may be mounted in the retainers' slotted channels to mate with electrical conductors on the panel.

Abstract: A two-piece plastic fastener comprising a body and a screw releasably secures a pair of panels together in spaced apart relationship. The body, which has a bore therethrough, comprises a body shank having a body head, outwardly extending, inwardly depressible, flexible locking tabs spaced from the body head, an external shoulder spaced from the tabs, and outwardly expandable walls spaced from the shoulder. The body shank also comprises, inside the bore, flexible screw thread engaging means and ramp means on the inside of the walls. The screw, which is insertable into the bore, comprises a screw head and a screw shank having a threaded portion and an unthreaded end portion. In use, the body shank is inserted into a hole in the first panel so that the latter is entrapped between the body head and the locking tabs. The body shank is then inserted into the hole in the second panel. The screw is axially inserted into the bore so that its threaded portion engages the thread-engaging means in the bore.

Abstract: A substrate support of integral construction, by which substrate (20, 39) can be fixed angularly to a plate (22, 40) and which comprising a base (3, 33), a fixing portion (1, 31) for coupling the base (3, 33), a first projection (7, 37) extending from the base (3, 33), and a second projection (8, 38) extending from a wall (9) extending from the base (3, 33). The substrate (20) is gripped by the base (3, 33), the first projection (7, 37) and the second projection (8, 38) so that the end of the substrate (20) can be inserted into the space between the first projection (7, 37) and the second projection (8, 38) and the substrate (20) can be fixed angularly to the plate (22, 40).

Abstract: A latch for securing a printed circuit board adjacent one side of a television chassis wall comprises a T-shaped tongue having a stem connected at one end to the bottom of a plastic body, the other end of the stem adjoining a crossbar. The latch also includes a U-shaped groove disposed adjacent to the top of the body along a major surface thereof for receiving an edge of the printed circuit board. The chassis wall has a neck defined by two shoulders spaced apart to support, respectively, L-shaped arms connected to each side of the body at the bottom thereof. The tongue passes through a T-shaped aperture in the wall beneath the neck such that the crossbar contacts the side of the chassis wall opposite the one side, the aperture being shaped to allow the crossbar to pass therethrough before making contact with the opposite side of the chassis wall.

Abstract: A printed circuit board support comprises an integral plastic molding having an elongated mounting portion adapted for insertion through an aperture in a mounting panel. The mounting portion has a head adapted to span a body adapted to be positioned inwardly of said panel, and abutment means for engaging the surface of a printed circuit board or the like. Resilient retaining means extending from the body yield resiliently upon insertion through said aperture and thereafter engage the back side of said panel. The support further has a retainer portion extending beyond the abutment means for insertion through an aperture in said printed circuit board and has resilient retaining means adapted to yield upon passage through the aperture in said printed circuit board and thereafter to bear against the opposite surface of said printed circuit board to retain said printed circuit board in supported position spaced from said panel.