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: An electrical connector comprises an elongated insulator block having a plurality of transverse channels extending around the front, upper and lower sides thereof and at least partially around a rear side thereof. A plurality of electrically conductive resilient contacts are disposed in the channels. Each contact has a generally C-shaped profile and a generally U-shaped projection in an intermediate portion thereof. Each contact is partially bifurcated on opposite sides of the intermediate portion along a longitudinal dimension of the contact, thereby defining upper and lower pairs of contact arms. The channels are contoured to substantially the shape of the contacts, including a generally U-shaped indentation slightly larger in dimension than the U-shaped projection to permit each contact to float in its respective channel.

Abstract: A fastener has a first plate-like base portion provided with an upright portion united by a hinge portion to an L-shaped portion terminating in a second plate-like base portion. The second plate-like base portion can be turned about the hinge portion to be locked in contact with a surface of the upright portion on the side opposite the hinge portion.

Abstract: According to the printed circuit board holding appliance of the present invention, a plurality of the holding appliances each comprising a spacing holding member and a fitting member can be connected vertically continuously through each tapered lower end portion. On transporting, therefore, plural printed circuit boards can be temporarily fixed easily by merely stacking and conveyed without being rattled by temporal fixing. Besides, since the vertical connection or the temporary fixation of the board holding appliances can be done easily, the printed circuit boards in a stacked state can be fixed also to a support member easily and firmly with a mounting screw.

Abstract: Described herein is a substrate fastener having resilient coupling members at the opposite ends of a strut member, characterized in that the coupling members are resiliently engageable in mounting holes of substrates to be fastened to each other, and at least one of the coupling members is connected to the strut member through a flexible hinge of a synthetic resin material. Accordingly, the fastener occupies only small areas on the substrates, permitting to mount electronic parts on the substrates in higher packaging density. The connected substrates can be freely turned into a horizontal or vertical position if desired.

Abstract: Described herein is a substrate fastener having a pair of inclined resilient coupling members at the opposite ends of a strut member, the coupling members being resiliently lockable in mounting holes provided in substrates to be fixed. A vertical substrate of a printed wiring board can be fixed in upright position on a horizontal printed wiring board easily and securely by the use of the fastener. Since the substrate fastener occupies only small areas on the substrates, it permits to improve the density of electronic parts which can be practically mounted on the printed wiring boards.

Abstract: A plastic fastener assembly is provided which has a base with an upstanding stab which has a single first tooth formed on one side of the stab and at least one second tooth formed on the opposite side of the stab. A cover defines an opening for receiving the stab. The cover has a control rail adjacent the opening and a flap extending into the opening opposite the central rail. The rail slides along the surface of the first tooth during assembly and urges the first tooth and stab toward the flap until the rail engages the notch of the first tooth. The flap automatically moves from the base during assembly as the first tooth and stab move toward the flap. The flap engages the second tooth when assembled inhibiting separation of the stab and cover.

Abstract: In a portable radio device comprising a housing (20), a printed wiring board (11) encased in the housing, and a machine screw (50) for fastening the board to the housing through a tapped and a via hole (17) and (25), the machine screw has head and threaded portions (51) and (52) and an insulating cap (55) of a cylindrical shape covering the head portion and having at least one groove. Preferably, a pair of the grooves (56, 57) are formed parallel to an axis of the machine screw. The head portion may be circular or polygonal in cross section and have at least one screw slot. At least one groove may be formed on an upper end surface of the insulating cap. Alternatively, the machine screw may wholly be made of an insulating material.

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 plate holder adapted to be connected in a mounting hole formed in a mounting plate, in which two holding plates are erected on a base perpendicularly in spaced relation to each other, and outside the holding plates are provided elastic non-return pieces adapted to be elastically retained in the mounting hole of the mounting plate. Such construction permits the plate holder to be used even where there is not much space below a plate to be held, used also as a guide rail and facilitates inspection.

Abstract: A fastener for mounting a circuit board or the like to a frame is disclosed. A mounting arrangement uses removable fasteners which are received by non-circular openings in the circuit board and rotated into engagement with the surfaces of the circuit board. The fasteners have at least two substantially parallel resilient limb members which have opposing recesses for receiving a frame member. This arrangement is especially useful for mounting non-rectangular circuit boards or for non-parallel mounting of circuit boards.

Abstract: A spacer for mounting boards, such as wiring boards or printed circuit boards, made of synthetic resin and comprising a resilient detent member provided at one end of a center support pillar member which extends in the vertical direction from the center of the resilient detent member, a pair of resilient reverse detent leg members provided at both sides of the support pillar member and extending obliquely downward so as to prevent the spacer from coming off out of the board or boards when inserted through a hole formed in one of the boards and mounted on the boards by restoring its inherently extended condition of the leg members, and a resilient support member provided at the other end of the support pillar member, all which components are integrally formed in one piece.

Abstract: Incorporated in a tensile member by which a hopper or the like is suspended from a ground-supported frame is an electronic load cell which is constructed and arranged to report to a convenient control location a signal which corresponds to the tension in tensile member as a measure of the weight of the material such as sand, crushed stone, cement or ore in the hopper. In order to prevent lightning which may strike the hopper or support frame from travelling along the tensile member and damaging or destroying the load cell, the tensile member is electrically isolated from both the hopper and the support frame by bushed connectors wherein the insulating bushing portion is stressed in compression. These bushed connectors simultaneously provide this electrical shock isolating function and both carry the static load and accommodate mechanical shock produced upon sudden changes in load, as when a load of stone is dumped into or dispensed from the hopper.

Abstract: A welding cable reel system including an insulated reel mounted on an electrically conducting bearing assembly, the assembly in turn mounted on a hub which is rotatably mounted on a shaft which is connected to an insulated support post. A cable being connected to the hub so as to receive current which is transmitted to the support post and carried through the shaft and hub to the cable.

Abstract: A fixing device for joining two sheet parts as separated by a prescribed space from each other is disclosed which comprises a hinge part adapted to be bent perpendicularly, a base plate part connected to one end side of the hinge part and provided with a projecting fitting shank, and an engaging part connected to the other end side of the hinge part and provided with a pair of legs possessing engaging claws at the leading ends thereof and a retainer claw possessing an upwardly urged free end.

Abstract: A mounting block for a plastic anchor base has a pressure sensitive covering (adhesive, magnetic, or the like) its lower surface so that it may be secured to a chassis, at any convenient location. The mounting block includes a hole of conventional dimensions leading to an internal cavity which receives and encloses the part of the anchor base which protrudes through a mounting hole. In some embodiments, the internal cavity also contains opposing cam surfaces which urge the resilient members on the anchor base to a released position when the anchor base is rotated. This way, the anchor base may be removed from the mounting block by giving the anchor base a partial turn and pulling. Another feature provides capture notches for receiving and locking said barbs when the anchor base is rotated.

Abstract: An insulator used in connecting heat generating electrical components to heat sinks. Fasteners which include insulators of the present invention include flexible engaging means for preassembling an insulating washer portion to a conductive fastener element. The insulators may be made of high performance plastic material or of a coated metal. The fasteners used with the insulators preferably have integral spring washers to maintain thermal conductivity between the components and the associated heat sinks. The insulator preferably have integral bosses which prevent arcing between the conductive fasteners and the heat sinks.

Abstract: A stackable hinging printed circuit board support is provided, comprising an integral plastic molding. The support is provided with an intermediate notch and an adjacent wall section which is sufficiently thin as to permit flexing for pivoting of one printed circuit board away from another. The support has an upstanding circular segment pilot for fitting in a circular aperture of an overlying printed circuit board. The support has at its bottom a W prong structure dimensioned for insertion in a circular aperture of a printed circuit board so as to coact with the upstanding circular segment pilot of an underlying support to wedge the pilot in the aperture. The W prong of one support is received in a recess provided in the body of a subjacent support.

Abstract: A detachable fastener comprises a central shank provided at one end thereof with a head portion and at the other end thereof with leg pieces of the shape of legs of an anchor movably connected through respective hinges to the aforementioned other end, and a receiving part adapted to receive external force and formed as connected to the leading ends of the leg pieces projected from the aforementioned other end of the central shank. In this fastener, the receiving part on receiving an external force causes the leg pieces to be bent about the hinges and the free ends of the leg pieces to be converged.

Abstract: A fastening clip is disclosed for use in fastening a component with a hole through it to a surface which also has a hole through it, in particular for motor cars. The clip has a supporting plate 5 extending at right angles to the axis of the clip and a rectangular body 6 connected thereto. The body 6 is connected to the holding plate 5 by way of expanding and locking arms connected to one another by integral bending areas 13, 14, 15. The expanding and locking arms 11, 8 and 12, 9 respectively are actuated by bending the body part 6 through 90 degrees to a position where it can be locked relative to the holding plate 5.

Abstract: A fastener for locking two objects in a predetermined relationship. The fastener has a fastener body including a spacer which defines a predetermined distance between the two objects. A first locking element is on one side of the spacer and a second locking element is on the other side of the spacer. The fastener body is adapted to receive a plunger which is adapted to travel from a retracted position to a secured position. The plunger causes the first and second locking elements to rigidly affix the objects to the fastener body thus holding the objects a predetermined distance from each other.

Abstract: A spacer having an upper substrate at the center of which a coupling hole is formed, a lower substrate which is provided opposite to the upper substrate, and a plurality of support members bridging between the upper and the lower substrates so as to retain a space therebetween in which the mechanical strength against the loads applied in the horizontal direction as well as in the direction of twisting is extremely large, thus enabling the spacer according to the present invention to resist failure even if these large loads are applied thereto unlike the prior art spacers and thus obtaining a secured snap-fitting as well as thus making possibility of the spacer coming off from the wiring board difficult.

Abstract: A combined metal and plastic standoff for supporting a circuit board in fixed spatial relationship with another element comprises a rigid plastic body of appreciable length to produce the standoff effect and a metal retaining member integrally mounted on the plastic body at an operative end thereof. The metal retaining member has main and retaining portions, the main portion being fixedly disposed within the plastic body and the retaining portion extending outwardly from the plastic body having a resilient reverse bend segment, and being adapted for engagement with the circuit board or other element by an essentially longitudinal motion of the standoff along the axis of the body length to physically secure the circuit board or other element to the plastic body adjacent to the operative end.

Abstract: The disclosed invention is a plastic fastening device which can be easily manipulated into engagement with an apertured panel. The device includes a fastening means extending perpendicular from one side of a base. The fastening means has a generally hook-shaped configuration characterized by a trunk portion, a curved transition portion and a tip portion. The fastening device has a generally elongated stem which is used as a lever arm to move the fastening means from a skewed, partially engaged position with respect to the panel to a final fully engaged position.

Abstract: A plate (such as a printed circuit board) is mounted and immobilized on a base (such as a chassis of a television receiver) by performing the following sequential steps: affixing mounting plugs on the base; positioning an apertured plate on the mounting plugs such that the head of each mounting plug projects through an opening of the plate and the plate rests on a support face of each plug; sliding the plate in its plane in a predetermined direction into a position in which an underside of each mounting plug head is situated immediately above a surface portion of the plate and edge portions defining the plate openings are in an abutting relationship with the respective mounting plugs; and bringing a component into an abutting relationship with a trailing edge of the plate subsequent to completion of the sliding step for preventing the plate from being shifted opposite the predetermined direction, whereby the plate is immobilized.

Abstract: In a fastener of the invention, a base is connected to an attachment mechanism, support element having pushing planes are connected to the base through arms slanted upwards from the base, and surface of a board is pushed by pushing planes by means of resilient deformation of the support elements, thereby the board is fixed above a chassis spaced by a given distance without interfering with other electronic parts on the chassis.

Abstract: An isolator assembly for isolating a transmitting and receiving communications antenna member from a mast and connector. The isolator assembly electrically couples an antenna member to a connector for passage of radio frequency energy but also electrically isolates the antenna member from the connector and the mast from a high voltage on the antenna member.

Abstract: An electrode device for electrically heating underground deposits of hydrocarbons in which an insulated pipe is disposed between an electrode and a main guide pipe. The two end portions of the insulated pipe are formed as flanges having outer circumferential surfaces counter tapered to diverge at a predetermined angle toward the end portions. Shock absorbers are disposed between fastening fixtures and the counter-tapered surfaces of the insulated pipe and the fastening fixtures are coupled to connectors on the main guide pipe and the electrode through bolts. If desired, the abutting surfaces of the main guide pipe and the electrode can be formed counter tapered similarly to the counter-tapered surfaces of the insulated pipe.

Abstract: A combination vibration damper and fastener comprises head portions of the shape of a suction disc opposed back to back to each other across a space and adapted to collide with two separate panels, shanks extended in opposite directions from the head portions and provided with engaging means, damper pieces extended aslant from the head portions so as to be opposed to each other, and a connecting piece serving to connect the two head portions to each other. Insertion of the opposite shanks into the fitting holes bored in advance in the two panels fastens the two panels as separated by a fixed distance from each other. Vibration arising in one of the panels is absorbed by the damper pieces and prevented from reaching the other panel.

Abstract: The invention disclosed relates to a device for stacking printed circuit boards one on top of another. More particularly, the device includes a section for mounting the device in a hole in the board, an upper section extending above the board and having an upwardly open hole and a lower section extending below the board for insertion into an upwardly open hole in a device carried by the underlying board.

Abstract: An isolator device to electrically insulate and isolate a separate component in a circuit board arrangement to allow for relatively fast and convenient diagnostic inspection of a circuit to locate failed components. The device has an isolator sleeve with a cavity which receives the lead of the component while the lead is in situ on the board. The component lead is electrically insulated from the board circuitry to permit separate testing of the component's integrity.

Abstract: A method of reducing electromagnetic re-radiation of harmonic and intermodulation products by metal structures, having at least two adjoining elements, in response to an incident electromagnetic signal (rusty bolt effect). The method comprises the application between the adjoining elements of the structure, at their junction, of a layer of a non-water soluble substance having a dielectric constant greater than 10.

Abstract: A two piece tubular standoff bushing especially suited for use as a spacer for separating or stacking structural components that require isolation, with the bushing consisting of an anchor housing providing a central bore including internal restraining members and a two-walled locking member insertable therein with the restraining members projecting inwardly between the walls and behind a locking ring for fastening the standoff bushing to a structural member.

Abstract: A one-piece fastener has an upper end that is detachably secured to a first panel and a lower end that is secured to a second panel.The lower end includes a flange that is receivable in an aperture in the second panel and bears against the wall of the aperture to minimize rocking movement of the fastener relative to the second panel. A lower portion of the flange is tapered to facilitate alignment of the flange within the aperture in the second panel.

Abstract: An electrical isolation system is disclosed for use on sailboats having metal masts and shrouds for preventing accidental shocking or electrocution of persons who contact lower portions of the mast or shrouds and/or electrical conductors appended thereto when the top of the mast or shrouds come into contact with an electrical high voltage distribution or transmission line with the system including an insulating member separating the upper portion of the mast from a lower portion of the mast.

Abstract: An electrically insulating, structurally strong bushing assembly for use at the chassis mounting interface of an electronic chassis, especially a Low Power RF chassis requiring a single point electrical ground, includes a specially machined epoxy-glass bushing for electrical insulation with a steel insert for high strength. The epoxy-glass bushing is machined from plate stock with the grain direction running perpendicular to the structural load and includes both inside and outside threads. The steel insert threads into the epoxy-glass bushing which is then threaded into the electronic chassis.

Abstract: An electrically insulated rail joint is protected from electrical shorting by laying an adhesive tape against the undersides and around the toes of the rails across their juncture. The adhesive tape has a thin plastic film backing which is exceedingly stretchy and a thick adhesive which is tacky, stretchy, self-sealing and more adhesive than cohesive.

Abstract: A space-saving arrangement is provided to easily accommodate several modified electronic circuit board modules. Primary and auxiliary electronic circuit boards, each carrying separate electronic components are releasably fastened in parallel arrangement by spacing elements. A releasable unitary electrical interface connector is also disposed between the primary and auxiliary circuit boards, so that the two boards can be electrically connected, when mounted together, and disconnected when separated.

Abstract: Mounting means for removably securing a circuit board in a fixed spaced relationship to a base plate. The mounting means includes one or more fasteners, each comprised of a spacer member and a latch member. The spacer member includes a disk-like portion having a first flat surface for securement against the base plate and a second flat surface on which the circuit board is supported. A post extends from the disk-like portion second flat surface through an opening in the circuit board. The latch member is mounted for movement on the post between a first position which allows it to pass through the circuit board opening and a second position in which it is locked against one surface of the circuit board forcing the opposite circuit board surface against the disk-like portion second flat surface.

Abstract: In mounting a part or parts, for example, of a tape recorder or other appearance, on a chassis or metal base plate, the metal base plate is provided with a circular hole, and a synthetic resin mounting member is molded through such hole so as to include a support portion molded against one surface of the base plate, a root portion molded against the other surface of the base plate and a connecting portion molded in the circular hole simultaneously with the support and root portions so as to be integral therewith and to permit turning of the mounting member about the axis of its connecting portion between an initial molded position in which all portions of the mounting member are fully located within the perimeter of the base plate and an active position angularly spaced from the initial molded position and in which the support portion of the mounting member is operative to mount a respective part on the base plate.

Abstract: An anchor base for integral plastic structures includes an articulated series of lever arms joined together in at least one joint by means of a living hinge in order to establish a preferred point of articulation. The leverage is such that, as a first pair of the lever arms are squeezed together to insert them into a mounting hole in a chassis, a second pair of lever arms, for giving lateral support, are initially pulled down. As the anchor base penetrates the mounting hole, the entire lever system pivots while lateral support levers are pushed up to spread the first pair of arms. Shoulders on the first pair of arms are forced under the lower side of the chassis, in order to capture the anchor base and to resist its removal. If the first pair of arms are thereafter squeezed together below the underside of the chassis, it is easy to remove the anchor base.

Abstract: The device comprises a metal fastener which bears against the flange of the rail and against the rail support. An insulating element is combined with the fastener for insulating the fastener from the support and insulating the fastener from a fixing bolt which extends through an aperture in the fastener and is anchored in the rail support. The insulating element is in one piece and comprises a planar branch having an aperture for the passage of the fixing means and a loop portion which is so shaped as to ensure the elastic mounting of the insulating element on the fastener and to be interposed between the fastener and the support.

Abstract: A bolt-receiving standoff connector especially suited for use as a spacer in separating or stacking electrical or electronic components, such as printed circuit boards or in any applications that require electrically isolating components while rigidly mounting the same to a support, chassis, or case, the standoff being constructed from non-conductive material, such as plastic or other like material possessing the required physical characteristics.

Abstract: A pin structure for a wiring duct and wire holder modular system for use in wiring electrical equipment as used in control panels and electrical cabinets for machine tools, industrial installations, computers and the like, consisting of modular units for supporting and distributing to electrical equipment a plurality of electrical conductors which are routed through a plurality of wiring duct modular units interlocked end to end or at a right angle to each other for forming branching wireways, or T-connections, and turns, or L-connections.