Abstract: A top shield arrangement for elongated filter traps, comprising an elongated sleeve member adapted to receive through one and thereof at least one filter trap such that the filter trap lies completely inside the sleeve member. The sleeve member is formed at the other end thereof for preventing withdrawal of the filter trap from the other end. A wafer seal is inserted into the sleeve member at the one end of the sleeve member for preventing unauthorized removal of the filter trap from the sleeve member through the one end thereof. The top shield arrangement of the invention protects filter traps against tampering by unauthorized persons.

Abstract: Several configurations of compression ground connectors to allow for one, two, three or more taps from a single ground connector to an installation requiring grounding. The installation is completed using a single crimping stroke.

Abstract: The electric fence insulator of linear polyethylene plastic includes a body having a rear portion for attaching the body to a fence post. Forwardly of the body is a clip unit having an upper latch mechanism. More specifically, the clip unit includes a first panel integrally attached to the body and a second panel resiliently connected at its lower end to the lower end of the first panel through the agency of a bight portion. The latch mechanism includes an upwardly directed keeper portion having an angled edge thereon and a hook portion having an angled edge thereon, the angled edges being vertically overlapped with respect to each other so that a latching engagement can be effected by manipulating a tab with one's fingers, the tab projecting upwardly from the hook portion. The latch mechanism also includes a rib formed in the hook portion which fits in a channel formed in the keeper portion for preventing slideable movement between the overlapping edges of the hook portion and the keeper portion.

Abstract: An improved strain relief device is connectable to a cable end portion to resiliently resist both bending and torsional loads imposed thereon. The strain relief device is formed from a resilient material and includes a tubular body portion which receives and is fixedly secured to the cable end portion to be protected. Projecting radially outwardly from the outer side surface of the tubular body are a circumferentially spaced series of elongated, resilient rib members which extend lengthwise in a direction parallel to the axis of the strain relief body. The ribs taper radially outwardly along their lengths and collectively function to progressively resist both bending and torsional loads imposed upon the cable end portion in a manner maintaining a generally linear relationship between the bending and torsional loads on the cable end portion and the resulting axial lengths of the strain relief body portion being bent or twisted.

Abstract: A flexible power current conductor (1) comprises a number of thin copper foils and is provided with through-going oblong holes (5) for clamping bolts at each end. The foils are held together in a middle area by means of a thermo-shrinking insulating plastic material which engages incisions (4) and secures the foils in relation to each other.

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: A hollow housing case of an electriclly conducting plate which has one insulating surface includes a connecting part to connect together electrically both ends of the plate. The connecting part is a bent portion which is formed by bending at least one end of the plate and enabling the non-insulating surfaces at both ends to face and contact with each other surely. Further, the hollow housing case comprises a fastening member for finally fastening together both ends of the plate. By the fastening member, a hollow housing case of any size can be fabricated easily, without the process of pressing.

Abstract: A high voltage porcelain insulator has a plurality of sheds extending laterally thereof at spaced apart locations therealong. The creepage path length of the shedded insulator is extended by mounting polymeric insulating creepage extenders on the porcelain sheds. The creepage extenders do not extend completely around the periphery of the sheds but leave a gap. Preferably the gaps of adjacent creepage extenders along the insulator are not aligned.

Abstract: A support assembly for non-metallic cable incorporating a metallic support fitting and a preformed metallic stress limiter, the latter including a generally mushroom-shaped hollow body having a tubular stem portion inserted between one end of the support fitting and the cable, and a generally part-toroidal head portion having an outer profile which is smoothly curving.

Abstract: A top entry top exit wiring duct for routing conductors to terminal devices, the duct including a base, side walls provided along each side of the base forming an open channel, a partial top wall formed by a number of fingers spaced apart to form open ended exit slots for the conductors and having distal ends extending toward the other of the side walls, the distal ends being spaced from the other of the side walls a distance sufficient to define a top entry opening into the duct for the conductors.

Abstract: A connector 10 for protecting, clamping, and sealing a cable passing through an aperture of a housing 14 for electrical or electronic equipment. A portion 15 of the housing 14 includes an aperture 34 for accepting a bushing 18. The bushing 18 includes a passage for a cable 26 and a pair of jaws 82 for clamping the cable 26 to prevent movement. The portion 15 of the housing 14 also includes an aperture 54 for inserting a locking clip 22 which locks the bushing 18 in the portion 15 of the housing 14. The locking clip 22 also provides the force required to activate the clamping jaws 82 on the bushing 18. A sealing ring 30 is compressed between the end 90 of the bushing 18 and a bevel surface 94 in the portion 15 of the housing 14 to close off the aperture.

Abstract: A cable spacer of the type used in overhead power transmission systems includes a body provided with cable engaging hooks, each hook having a seat in the form of a cylindrical segment. A cable retainer is provided for each seat and consists of a cylindrical body having at least one semicylindrical groove and a handle projecting radially outwardly. The retainer is slidably receivable in the seat from either end thereof and rotatable between a first position in which the cable may be inserted into the groove and a second, cable retaining position in which the groove is within the confines of the seat.

Abstract: A hermetic terminal assembly for a housing including a fuse-like area positioned in the outer pin segment of a terminal pin extending in sealed relation through the body member of the terminal assembly which body member can be sealed to a housing wall, the fuse-like area in the outer pin segment being covered with a thermally decomposable coating which in the event of decomposition includes an arc suppressant. A pin guard and lead wire end connection securing device is provided to protect the outer pin segment and to secure the lead wire end connection thereto.

Abstract: A cable connector jacket formed of flexible, electrically insulating plastic is of unitary, one-piece construction, including two cavity-defining bodies hingedly interconnected in a clamshell-type configuration for movement between open and closed conditions. Each body has two pairs of channel-like tapered arms respectively extending in opposite directions therefrom generally parallel to the hinge line. When the bodies are in their closed conditions, the cavities define a chamber for accommodating the cable connector, and the arms of one body respectively mate with those of the other body to form four tapered tubes for respectively accommodating cable portions interconnected by the connector. A latch on the body holds the jacket closed.

Abstract: A wireway for enclosing electrical conductors includes a longitudinally extending channel-shaped housing having a cover member removably hinged to the top wall of the housing. The cover may be swung between open and closed positions with the hinge constructed to permit removal of the cover to provide access to the interior of the housing. When removed, the cover may be retained on the front edge of the bottom wall of the housing.

Abstract: Referring to FIG. 1, a cable entry device for an electric appliance comprises a body 2 and a protective sleeve 3 through which the cable 1 passes. The body is provided with cable grips 5, 6. Catches 10, 11 secure the body within the appliance. The body may be made as a one-piece plastic molding, comprising two portions joined by a web 7, which also acts as a spring to bias the catches into a locked position in the appliance.

Abstract: An aluminum or aluminum alloy profiled section has one or more insulated electrical conductors. Such a profiled section includes at least one linear electrical conductor parallel to the profiled section, formed by the same material as the latter and insulated electrically in a solid insulating filling, a bare surface of the conductor and a bare surface of the filling being covered if required by a second insulating filling.

Abstract: A busbar system with holders, the tops of the holders having a number of receptacles for busbar sections running at a specific interval and parallel with respect to one another, the busbar sections being fixed in position in these receptacles. The busbar system can be easily extended using prefabricated units with the busbar sections being completely covered on the side facing the mounting surface. The holders are designed as rectangular carrier plates aligned with the longitudinal sides of the plates parallel to the busbar sections. The busbar sections terminate flush with the narrow sides of the carrier plates. On the narrow sides of the carrier plates, the facing end sections of the receptacles and/or the busbar sections accommodate one-half of connecting elements aligned in the longitudinal direction of the busbar sections. The connecting elements can be connected so as to be electrically conducting when the holders are connected in a row with the ends of busbar sections abutting.

Abstract: An assembly kit for a busbar system made of holders and of busbar sections that can be fixed in position or are fixed in position in receptacles of the holders, which receptacles are spaced from and parallel to one another.

Abstract: A holder with busbars for a busbar system, the holder being an insulating support with receptacles located in its top. A number of busbar sections are fixed in position in the receptacles at regular intervals parallel to one another. Protected wiring of electrical equipment connected to the busbar sections is achieved by the insulating support being formed as a carrier plate that extends over the lengths of the busbar sections fixed in position in the receptacles; by at least between adjacent busbar sections, a row of openings being located in the carrier plate, the openings being aligned one above the other perpendicularly to the busbar sections; and by recesses serving as cable ducts being located in the bottom of the carrier plate, the recesses connecting the openings aligned one above the other perpendicularly to the busbar sections to one another and to the longitudinal sides of the carrier plate running parallel to the busbar sections.