Abstract: A penetrator and flexible circuit apparatus comprises a penetrator housing having a passageway through which at least one elongated flat flexible circuit having a plurality of parallel electrical traces is placed. A retention material substantially occupies the passageway to retain the flexible circuit in the passageway, to establish a hermetic seal of the flexible circuit within the penetrator and to thereby seal the interior of a computer which is cooled by cooling fluid from its exterior environment.

Abstract: A three-phase electrical power distribution busway having neutral busbars configured to have a higher current carrying capacity than each of the phase busbars of the busway is described, The neutral busbars have a combined cross-sectional area which is greater than the cross-sectional area of each of the phase busbars. The neutral busbars have a rectangular cross-section configured to reduce the skin effect and reduce ohmic heating caused by increased neutral busbar currents resulting from non-linear loads.

Abstract: An end fitting with stress distribution for supporting an end of a device, such as an insulator, placed tension. The end fitting has a mounting hole for receiving a cylindrical mounting pin therethrough. The mounting hole has a pair of contacting points spaced laterally relative to the vector line of force to redirect the tensile load applied to the end fitting by a mounting pin located in the mounting hole. The end fitting is especially useful in insulators subjected to tensile loads.

Abstract: A high-voltage anti-corona connector and method of use rely upon a hand-rtable wheel which is attachable to a threaded stud on a mounting flange for rapidly connecting and disconnecting an adaptor plate to a helix coil of a radio frequency transmit system. The handle of the wheel is ring shaped to preventing corona discharge from the area surrounding the connector.

Abstract: A busway and insulator assembly for use with the busway are described. The insulator assembly provides access to the conductive busbars through the busway housing and is configured for use with plug-in tabs which extend from the outer edges of the busbars. The insulator assembly includes a base having openings therethrough for cooperation with each plug-in tab. Insulated stabs extend from the insulator base and are disposed between the plug-in tabs-to prevent arcing between the tabs and exposed areas of the busbars. Additionally, the insulator base includes track members for slidably receiving an insulated cover which may be moved into a position blocking access to the plug-in tabs or moved to a position permitting access to the plug-in tabs.

Abstract: The present invention involves an electrical or electronic communication signal distribution system which is uniquely designed to cooperate with or interfit into the interior of a typical modular office panel. The system can be considered to have three key interacting and cooperating elements; a removable casing, a complementary raceway, and electrical or electronic wire signal distribution system incorporated into the channel. The system typically provides electrical or electronic wire communication signals to a variety of computers and communication devices such as telephones and facsimile machines. Other aspects of the invention include a panel, such as a modular office partition, or a power pole, into which the system fits, or with which it cooperatively operates; and apparatus comprising the combination of the panel and system.

Abstract: An apparatus is providing for signal communication between the interior and exterior of a pipeline. A fitting is secured to the external surface of a pipeline, the fitting having a branch opening therein communicating with the pipeline interior. A plug member is sealably positioned in the branch opening, the plug member having a passageway therethrough. At least one conductor is received in the plug member passageway providing an apparatus to conduct an electrical signal from within to the exterior of the pipeline. A potting compound fills the passageway surrounding the conductor to seal the conductor in the plug against the leakage of liquids or gases.

Abstract: An end fitting with optimized weight for supporting an end of a device, such as an insulator, placed under tension. The end fitting has a mounting sleeve for coupling the end fitting to a core member, a mounting hole for receiving a cylindrical mounting pin therethrough and a cutout or removed portion positioned between the mounting hole and the mounting sleeve for optimizing the weight of the end fitting. The mounting hole can optionally be provided with a pair of contacting points spaced laterally relative to the vector line of force to redirect the tensile load applied to the end fitting by a mounting pin located in the mounting hole. The end fitting is especially useful in insulators subjected to tensile loads.

Abstract: A grommet, to be installed on a wire harness penetrating through two panels, comprising: a first member (11) and a second member (12), wherein the wire portion (21) is inserted into the large-diameter portion (15), the rib (22) is brought into contact with the stepped portion (16), and the cut-out portion (17) is engaged by the locking projections (23, 24) by adjusting the lengthwise and circumferential directions of the wire portions (14) and (21), so as to connect the wire portion (14) of the first member (11) and the wire portion (21) of second member (12) with each other.

Abstract: A generally-planar polymeric protective shield (2) for mounting on a high voltage porcelain insulator (16) has circumferential and radial intersecting grooves (8,10) in its upper surface. The intersections are deepened to provide point projections (12) from the lower surface thereby to space the major portion of the shield (2) from the insulator (16). The convoluted upper surface of the shield (2) enhances the physical protection of the porcelain of the insulator (16).

Abstract: An insulator for a terminal-connecting portion has a sufficient force for holding a terminal and can drain water efficiently. An insulator body 100 is provided with a draining hole 140 on a side wall part 133 which is one of the exterior walls forming a curved portion 130. Since the draining hole 140 is provided on the side wall part, an outer corner wall part 131 of the curved portion 130 is left intact and an inner peripheral face of the outer corner wall part 131 is closely and elastically mounted on a corner 64 of a female terminal 60. Since an inner peripheral face of another end 120 of the insulator body 100 is closely and elastically mounted on two corners 62 and 63 out of three remaining corners 61 to 64, the female terminal 60 is supported on three points, so that a sufficient force of holding a terminal can be obtained.

Abstract: This invention relates to electrical connectors, specifically to an electrical connector that is easy to insert into a hole or knock-out of an electrical junction box. Design of the connector provides for positive fixture of the connector in the box once non-metallic sheathed cable, either oval or circular in cross-directional shape, is inserted through the connector, thus preventing the cable from being withdrawn. The C-shaped one piece connector of this disclosure contains an integral hinge, a cutout area, and a necked down area on the top flange to provide for easy flexing about the central insertion axis and therefore easy insertion into an electrical junction box. The jaws of the electrical connector are designed such that a positive bite or grip is applied to an oval or circular non-metallic sheathed cable as tension is applied on said cable to attempt to remove it from said electrical enclosure.

Abstract: An instrument housing for industrial electronic systems includes a closed body provided with a front opening. An exchangeable frontal frame having a U-shaped profile is provided at the front opening and is equipped with a covering strip provided with a step and with a flashing strip provided with a groove as well as with shaped-on pins for fastening it to a frame strip of the body. If the frontal frame is attached, the step sealingly grips around the edge formed by the frame strip and the body, and an angled knife-edge strip attached at an acute angle to the frame strip of the body engages into the groove.

Abstract: A closure plug having a pair of insulating members coupled together by a fastener for plugging an opening in an electrical box or an enclosure. The closure plug also includes a gasket for providing a weather tight seal around the opening in the electrical box. The fastener is frictionally retained in one of the insulating members for rotation therewith. The insulating member with the fastener coupled thereto preferably has a plurality of ribs for rotation the fastener into a hole formed in the other insulating member.

Abstract: A self-retaining knob assembly (200) includes a housing (150) and a hub (120). The housing (150) has a cavity(157) for receiving a key (135) and a rotation track (160) about the cavity (157). The hub (120) has an integral key (135) and is rotatably mounted within the cavity (157) and within the rotation track (160). While being mounted, the key (135) is guided into the rotation track (160) by a guide member (266) integrally located on the housing (150). The housing (150) has retaining members (261,262) which cooperate with the key (135) to substantially restrict the removal of the key (135) from within the cavity (157) after the key (135) is mounted.

Abstract: An improved electrical fitting is provided in a first embodiment that is a coupling which consists of a housing to receive in each side a distal end of a length of electrical metallic tubing carrying wiring therein. A pair of hose clamps are each built into the housing at each side, so that the distal end of each length of electrical metallic tubing can be retained thereto. A second embodiment that is a connector which consists of a housing to receive in a first side a distal end of a length of electrical metallic tubing carrying wiring therein. A fastener is for connecting a second side of said housing to an electrical junction on a stud box. A hose clamp is built into the housing at the first side, so that the distal end of the length of electrical metallic tubing can be retained thereto.

Abstract: An electrical connector assembly for coupling non-metallic electrical conduit to an electrical box via a snap-fit. The electrical connector assembly includes a snap nut adaptor with an annular groove at one end forming a first mating member, and a conduit connector with resilient latch tabs forming a second mating member. Upon inserting the snap nut adaptor through a hole or knockout opening in an electrical box, the conduit connector is securely coupled thereto by inserting it over the snap nut adaptor until the latch tabs engage the annular groove via a snap-fit.

Abstract: A control cabinet with an open bottom, which is enclosed by legs of a frame and can be closed off by individual bottom plates which can be placed side-by-side. The individual bottom plates rest with their short sides on a support shoulder of the facing frame legs and are connected with these frame legs. The bottom plates have an edge that is twice bent along at least one long side, wherein sealing strips seal the abutting long sides of adjacent bottom plates and where cables are introduced through cutouts in the bottom. Individual insertion and assured sealing of the individual cables, together with extensive adaptation and expansion possibilities is achieved with at least a portion of the bottom plates having cutouts spaced along the long side with the edge. Cable bushings which have stepped, offset bushing pieces with different interior diameters are insertable into the cutouts.

Abstract: A low profile strain relief cord grip is disclosed. The cord grip may be used in applications where a large number of conductors require their ganging in close proximity to one another in a panel or junction box. This cord grip provides strain relief on the cable, holding the cable from pulling out of the panel or from putting any strain on the terminal connections within. The cord grip is designed to be easily constructed and mass produced and does not require the use of complex dies as do some of the popular cord grips in common use in the industry today. The cord grip provides a liquid-tight seal, allowing its use indoors or outdoors. A wide range of cable sizes may be utilized with one size of cord grip. It utilizes a compressible one-piece grommet having an inner sleeve with lips in contact with the cable and an outer array of wedges that mate with a compression cone for compressing the grommet's periphery in an inward direction to tightly grip the cable in a water tight manner.

Abstract: The end piece for passage of an electrical power supply cable through an orifice of a casing comprises a flexible bearing flange cooperating with an auxiliary securing part arranged as a hollow button having a clamping surface in the shape of a rigid wedge bringing about elastic deformation of the flange, and progressive clamping of the cable when the button moves from a released position to a secured position. The securing part of the passage is an integral part of the insulating wall supporting the contacts.