Abstract: A curled electrical conductor cord is disclosed that comprises at least one core wire and a sheath layer covering the core wire, the core wire having at least one conductor covered with an insulating layer. The cord has a diameter of 1 mm or more, or has a cross-sectional area of 1 mm.sup.2 or more. The vertical stretch L.sub.0 of the curled portion of the cord by its own weight is 30% or less. The vertical stretch L.sub.50 of the curled portion of the cord under a load of 50 g is 200% or more.

Abstract: An electrical heater, to be powered from an automotive-type cigarette lighter socket, includes a heating element, a plug configures to be inserted into the cigarette lighter socket, and a pair of conductors permanently connecting the heating element to the plug. The plug has a flat substrate and a pair of conductors mounted on the substrate. An electrical plug, for a lighter socket of the kind having an inner wall of a predetermined diameter and a pair of electrical contacts, includes a flat assembly having a flat dielectric base having a width corresponding to the predetermined diameter, and a pair of flat conductors attached to the base for touching the pair of electrical contacts in the socket.

Abstract: Cordage (17) which may be used for any of the commonly marketed lengths of etractile cords comprises an array of a plurality of conductors (11--11) each insulated with a suitable plastic material. The array of conductors is enclosed in inner and outer jackets (52, 54). The inner jacket comprises a polyvinyl chloride (PVC) plastic material, for example, and has a thickness of about 0.015 inch. Covering the inner jacket is an outer jacket comprising a polyvinyl chloride plastic material having a thickness of about 0.005 inch and having a colorant constituent. The PVC composition of the inner jacket is such that it is a less expensive composition than that of the outer jacket. Enclosing the outer jacket is a layer (56) which comprises a top coating material. The top coating material provides the cordage with enhanced retractibility and prevents discoloration as well as plasticizer migration from the outer jacket.

Abstract: A printing apparatus comprises a movable carriage mounted with a printing mechanism that reciprocates along a printing line on a platen, and a control unit, which is provided on a printer body in a stationary manner and sends control signals to the printing mechanism for its various operations. A flexible member connected to the carriage and the control unit for transmission of the control signals. For this purpose, the flexible member is connected at one end to the printing mechanism. The flexible member has a first end portion at a proximity of that end, which is clamped by a connecting member pivotally supported on the carriage. This connecting member can swing to permit free deformation of the flexible member which is caused by the movement of the carriage.

Abstract: A structure is provided for installing a flexible printed circuit board retained in a state in which a plurality of U-turn portions are formed in members moving relatively to and parallel with each other. At least two of the plurality of U-turn portions are arranged on a straight line such that at least parts of the moving paths of the plurality of U-turn portions are overlapped with each other. Positions at which the members are retained are determined such that the plurality of U-turn portions are assembled together at a particular timing in the relatively moving strokes of the members.

Abstract: A yieldably extensible, self-retracting cable comprises a flexible center conductor surrounded by a primary dielectric material with a flexible wire shield exterior thereof and a thermoplastic or thermosetting elastomeric outer jacket formed permanently in a helical shape. The primary dielectric insulation comprises materials such as polymeric fluorocarbon or irradiated polyethylene having an exceptionally low dielectric constant. The low dielectric constant is maintained despite the permanently coiled configuration of the cable by ensuring that the plasticizing or curing temperature of the jacket is less than the melting or other degradation temperature of the dielectric material, and by utilizing unbraided wire shielding comprising a pair of concentric layers of wire wound helically in mutually-opposite directions to avoid mechanical injury of the dielectric material.

Abstract: The invention relates to a cable channel A for telephone cables (7) in a telephone exchange (4). The cable channel is mounted to join up with a horizontal cable run (3) at a height (H) in the excahnge. The cable run (3) can be placed at different heights (H) in different telephone exchanges, and for enabling the use of a single type of cable channel for the cable runs (3) at different heights (H), the cable channel in accordance with the invention is one such that it is adjustable in height and includes a first part (1), and a second part (2) movable in said first part so that the height of the channel can be varied and adjusted to the height (H) of the respective cable run (3). The telephone cables (7) are taken through the cable channel A to the telephony equipment in a shelf rack (5).

Abstract: A flexing connector for suppressing electromagnetic radiation from an electrical cable connecting moving and stationary elements of a machine has a shield surrounding a signal cable which includes an inner coil of wire wound in a generally helicoidal form with a flat cross-section with the signal cable positioned within the coil. An outer coil similar to the first, but with somewhat larger cross-section and wound with a different chirality, surrounds the inner coil. The coils are made from hardened steel, which is both electrically conductive and ferromagnetic. The two coils and the cable are clamped together on either side of a moving loop extending between the moving and stationary elements so that the coils cannot elongate and spread their windings apart as the connector is flexed.

Abstract: A rigid but flexible bondbar interconnects first and second electrical cable ends in a vicinity of a splice region thereof, the bondbar being shaped and constructed such that it is substantially rigid when exposed to axial tensile loads below a first value and is irreversibly bent when subjected to axial tensile loads above the first value, an overall flex length of the bondbar being such that both of the cable ends are prevented from being pulled out of the cable repair region.

Abstract: A core cable is composed of a core member, a conductor spirally wound around the core member, and an insulator covering the outer surface of a layer of the spirally wound conductor. For the core member and insulator, elastic and deformable materials are used, and the core member, conductor, and insulator stretch and contract integrally with each other. When using a non-elastic core member and insulator, a plurality of core cables are spirally wound together to be formed like a coil and then covered with an elastic and deformable sheath so as to be finished into a single line of cable which stretches and contracts due to elasticity of coil-like cables and sheath.

Abstract: A telephone cord twist restrainer which is comprised of a rudder-like plate which is attached to a coiled telephone cord by means of slotted holes formed in the plate and by two (2) projections extending from the plate which slidably fit, in opposing directions, within the coils of the telephone cord. The plate extends laterally on a single side beyond the diameter of the coils in lengthwise orientation with the coiled cord, where its extending mass provides stability to the coiled telephone cord both through physical contact at nearby surfaces, and by the location of weight of the plate itself outside of the periphery of the coiled telephone cord. Notches may be formed on the projections so as to provide improved retention within the coiled cord, especially when the coiled telephone cord is extended and stretched out close to its maximum limit.

Abstract: An electric lawn mower and power cord combination in which the power cord has a central portion that is self-coiling. This central portion of the cord comprises the predominant length of the cord, and is constructed with an elastic memory, so that, when in its relaxed state, it automatically coils itself into a continuous spiralling helix that is too large to pass under the electric lawn mower. A cord grip is also disclosed that locks the cord to a stationary object to prevent the cord from inadvertently becoming disconnected during use.

Abstract: A cable carrier/retractor for supporting, protecting and guiding a cable to an equipment drawer in a cabinet including a framework while at the same time allowing for addition or removal of cables without any disassembly of the mechanism. The carrier supports a cable from an entry position adjacent to the framework of the drawer to an exit position adjacent to the back panel of the drawer. The carrier generally comprises a first having an entry end for supporting a cable from the entry position to an intermediate position, and a second channel for supporting the cable from an intermediate position to the exit position, a hinged mount connecting the first channel to the frame, and an intermediate hinge for connecting the channels. In a preferred embodiment, a retaining hinge connected to a drawer-mounted slide member or the drawer back panel holds the exit end of the second channel in a position adjacent to the back panel.

Abstract: The present invention utilizes a wire wool slug packed inside a helical coil of an aircraft engine sensor in order to reduce vibration damage to the coil.

Abstract: A leading end portion (33) of a supply of cordage (31) is clamped to a mandrel (32) such that it is straight, after which a plurality of convolutions of the cordage are wound on the mandrel. The cordage is severed from the supply and a trailing end portion (34) of the wound cordage is clamped to the mandrel in a manner which causes it to be straight and hence suitable for termination with a modular plug (37). The coiled cordage is heated and cooled and is then removed from the mandrel while simultaneously the direction of the helices is reversed. Then the cordage is severed at a predetermined location to produce two retractile cords, for example, one including the leading end portion of the length of wound cordage and a newly formed straight trailing portion. The second cord includes a newly formed straight leading end portion and the initial trailing end portion. The newly formed end portion of each cord is caused to be held in a straight configuration and annealed to cause it to retain that configuration.

Abstract: Services, such as electricity and water, are supplied through conduits to moving machinery such as a longwall mining machine which moves along a conveyor or other fixed path. A channel having an open mouth which is flexibly sealed is disposed alongside the path and contains supply conduits for the machine. A sleeve projects through the channel seals into the body of the channel and guides the conduits to the machine. A gas may be fed to the machine via the channel and sleeve. As the machine moves the conduits bend over themselves.

Abstract: Novel dual conduit clamp assembly of particular use in starting storage batteries. The assembly is one of the type known as a "jump cord" assembly and is characterized by (1) a smaller spacing of positive and negative clamps at one end thereof and (2) a substantially larger spacing of clamps at the other end thereof.

Abstract: A bacteria destroying apparatus for use with a voice communication system such as a telephone system, and telephone systems which have such bacteria destroying apparatus included therewith. The bacteria destroying apparatus may adopt the form of a relatively thin, flat disc which is located in the mouthpiece of a telephone handset, and preferably in close proximity to the diaphram of the handset or any other portion of the voice communication system which normally collects a substantial amount of bacteria thereon as, for example, a result of close proximity of a user's mouth. The bacteria destroying apparatus generates radiation in a wave length range which is effective to destroy bacteria. In one embodiment, the radiation is generated when the element itself is electrically energized.

Abstract: The disclosed current relaying device comprises a corrugated strip of an electrically conducting material, a pair of strip-shaped conducting electric conductors connected to both ends of the corrugated strip, an electrically insulating casing for surrounding the corrugated strip throughout its length, and a pair of fixing and supporting members for enclosing both end portions of the casing.

Abstract: An electrical cable having a shielding comprised of knit or knit-graded wire having metal coatings.

Abstract: A retractile telephone cord of this invention has a retractility which decreases substantially linearly from each end to a center of its length and an extensibility which increases substantially linearly from each end to a center of its length. The cordage includes a plurality of conductors which are individually insulated with a first plastic material and which are disposed in a planar array, and a jacket of a second plastic material which encloses the array. The jacket is formed about the array to provide a cross-section transversely of the cordage which includes at least one side that is parallel to the array. In making the retractile cord, a length of the cordage is wound helically about a mandrel with the one side of the cross-section of the cord being in engagement with the mandrel.

Abstract: The device is an accessory attachment which prevents twisting and entanglement of the commonly used helical extensible telephone cords which connect the telephone handset to the main telephone or base. The device is a somewhat flexible elongate member centrally positioned within the cord and attached to the opposite ends of the cord.

Abstract: A guiding device for a household apparatus has a first tubular member fixedly mounted on a housing of the apparatus, a second tubular member which is telescopable relative to the first tubular member and has a handle and a switch, and an electric conductor which extends inside the tubular members and is helical inside the fixedly mounted tubular member and rectilinear in the telescopable tubular member so as to extend from the housing of the apparatus to the switch and to be clamped in the telescopable tubular member in the region of an initial end portion of the latter.

Abstract: A telephone cord which is particularly suited for use with some models of decorative telephones includes a plurality of individually insulated conductors, a plastic jacket which encloses the plurality of individually insulated conductors, and a braid which encloses the plastic jacket. While the braid is comprised of a woven band of cloth of a natural material or a synthetic material, in a preferred embodiment it is made of cotton which is dyed to a color which is compatible with that of portions of the decorative telephone. An end portion of the cord which is terminated with a modular plug that is capable of being inserted into a jack in the telephone is treated to cause the braid to be bonded to the plastic jacket so that when the jacket is removed to expose the conductors for purposes of plug termination, the braid will not fray.

Abstract: Anisotropically pressure-sensitive electroconductive composite sheets are provided which have a very low electric conductive resistance in the direction perpendicular to the plane of the sheet when compressed with an adequate pressure in the direction but a high insulating resistance in all directions within the plane of the sheet. The composite sheets are constructed so that electrically conductive fibers are uniformly dispersed in the matrix of an electrically insulating substance, the average length of the fibers ranging from 20 to 80% of the thickness of the sheet, and are aligned in the direction substantially perpendicular to the plane. They are useful as a switching material in various miniaturized electronic circuits.

Abstract: A polyvinyl chloride surface, such as plasticized polyvinyl chloride telephone cord jacket, is coated with a coating formulation comprising a medium molecular weight methyl methacrylate copolymer, cellulose acetate butyrate and a carbalkoxy benzyl phthalate plasticizer. The coating affords good adhesion, fast drying and stain resistance.

Abstract: A two-piece connector plug is provided for terminating a round electric cord of a modular telephone system. A retainer plug having two wedge-shaped legs is pressed through a lateral opening of the connector plug housing to compress and captivate the jacket of a round cord. This plug locks the cord firmly against rotational as well as pulling forces to which the cord may be subject.

Abstract: This invention is a fibre optic communication cable in which the signals are transmitted by light. The glass fibres used for the cable are protected from breaking strain and from excessively sharp bends by supporting helically wound optic fibres on the inside of a tension element with provision by which the diameters of the helical convolutions can become smaller to increase the axial length component of the optic fibres when the a axial length of the tube is increased by forces that strain the tube. Several ways of maintaining the helically wrapped optic fibres supported from the tube so as to permit decrease in the diameter of the helix are described and illustrated.

Abstract: The cable includes bundles of plastic-impregnated nylon fibers acting both s strain members and strain accumulators. An inner core bundle is wound with an electrical conductor that stretches with the fibers when the cable is tensioned. The winding pitch assures that the fractional change in volume per fractional change in length is the same for the winding as it is for the fibers. An outer sheath-like bundle surrounds the inner bundle and its winding. Preferably, the cable is used as a limited length section of an otherwise conventional co-axial cable for suspending various objects from a ship. The section length is limited to that needed for its accumulator action.

Abstract: A towable cable type electrode has a bouyant core covered by a layer of hcally laid wire strands and is characterized by a slide member near the aft end of the electrode to which the aft ends of the wire strands are secured. The slide member is constrained by guides to axial movement along the core so as to accommodate excess length in the wire strands that works its way aft along the electrode during use.

Abstract: An axial tomographic scanner is provided with two separate chain-cable assemblies each carrying a fixed length of the cables leading to the scanner. One assembly includes a cable-incoming end anchored to the vertically arranged frame, the other end being anchored to the indexable rotatable plate. The other assembly also has one end anchored to this plate, the other, cable-outgoing end being anchored on the translatable yoke. Associated with and engaging each assembly is a translatable rotary member, which, when the plate is indexably rotated or the yoke is translated, is itself, respectively translated and serves to take up the slack that would otherwise form in the respective assembly.

Abstract: Transmission lines using tubular extendible elements in which two such elements are combined to form a coaxial type transmission line or a two-wire transmission line and in which a single element is constucted as a two-wire transmission line and tubular extendible elements and other structures using materials having various temperature coefficients.

Abstract: A travelling cable support system for cranes, in which a cable is fixedly secured between successive sleds, is discussed. The sleds are connected together by resilient tension elements which stretch elastically on acceleration and subsequently give up their stored potential energy as kinetic energy. Non-elastic traction cords are also provided in conjunction with the cable and elastic elements for limiting the extension of the elastic elements.

Abstract: At least three elongated flexible elements bonded together lengthwise to form constraint means arcuate in cross-section for forcing said elements to move in a predetermined path in which the flexible elements are bent longitudinally to form a loop of substantially uniform radius intermediate the ends thereof so that at least a portion of the loop is forced into a flat cross-section while the straight portions or trailing lengths of said elements on opposite sides of the loop are self-constrained in relatively stiff and straight runs whether either straight portion is pulled or pushed in relation to the loop, such that the flexible elements move as if reeved on a reel, sheave or the like.

Abstract: A device is disclosed for maintaining a conductor cable in an accordion fold configuration comprising a flexible clip member having opposing inclined sides terminating at a joint section receivable over the folds of the accordion cable with fastening means for securing and maintaining the apex of the fold within the clip member.

Abstract: An electrically conductive moveable support member for use as a contact carrier, contactor or armature support.Such electrically conductive support member is formed of electrically conductive material of sufficient cross section to carry the desired current, and is formed with reverse convolutions which may be interleaved to provide a small, compact, support member. The convolutions are formed about the mid-point of the length of the material, to leave opposite end portions, one of which may be supported to a base member and the other of which is provided with a contactor, armature or the like.

Abstract: An axial tomographic scanner having means for supporting a plurality of cables leading to the X-ray source including a yoke upon which the X-ray source is mounted, first bracket means mounted on the yoke adjacent the X-ray source for restraining cable movement, second bracket means mounted on the yoke remote from the X-ray source for restraining cable movement, and means disposed between the first and second bracket means for maintaining the cables passing therethrough in a gradual arc while preventing undue flexing of the cables and undesirable movement of the cables into interfering position with other components of the axial tomographic scanner.

Abstract: An electrical cable of conventional or retractable helical coil form which is relatively small in diameter and sufficiently flexible to be used to advantage on a tractor-trailer to connect the power supply on the tractor with the electrical system carried by the trailer has a polymeric sheath, an insulated 10 gauge stranded conductor substantially coaxial with the sheath, four to six insulated stranded 12 gauge conductors substantially evenly spaced about the periphery of the 10 gauge conductor, a plurality of uninsulated stranded conductors of 14 gauge disposed between the smaller insulated conductors, filler material filling the spaces between the conductors and preferably a plastic film helically wound about the conductors. The 12 and 14 gauge conductors are helically wound about the 10 gauge conductor. The assembly of conductors, filler and plastic film combine to form a cable having a substantially circular cross-section and substantially fill the sheath.

Abstract: Transmission lines using tubular extendible elements in which two such elements are combined to form a coaxial type transmission line or a two-wire transmission line and in which a single element is constructed as a two-wire transmission line and tubular extendible elements and other structures using materials having various temperature coefficients.

Abstract: A telephone cord which is particularly suited for use with some models of decorative telephones includes a plurality of individually insulated conductors, a plastic jacket which encloses the plurality of individually insulated conductors, and a braid which encloses the plastic jacket. While the braid is comprised of a woven band of cloth of a natural material or a synthetic material, in a preferred embodiment it is made of cotton which is dyed to a color which is compatible with that of portions of the decorative telephone. An end portion of the cord which is terminated with a modular plug that is capable of being inserted into a jack in the telephone is treated to cause the braid to be bonded to the plastic jacket so that when the jacket is removed to expose the conductors for purposes of plug termination, the braid will not fray.