Abstract: A shutter mechanism for an electrode pad attached card and a contact comprises a slider which can reciprocally move forwardly and backwardly in accordance with insertion and withdrawal of an electrode pad attached card. A contact guide groove is formed in the slider in such a manner as to extend in a direction of the reciprocal movement of the slider and adapted to guide a contacting projection of a contact. A release groove is formed in a bottom surface of the contact guide groove, the release groove having a smaller width than that of the guide groove and extending in the direction of the reciprocal movement of the slider. The release groove is in opposing relation with the contacting projection, a slip portion formed at an area in the vicinity of the contacting projection, the slip portion being resiliently contacted with a stepped portion formed along an opening edge of the release groove.

Abstract: A mis-convergence correction device includes a first controlled coil unit, a second controlled coil unit, a controlling coil unit, and a coil holder. The first controlled coil unit includes first and second drum cores and a first controlled coil. Each of the first and second drum cores has circular flanges at its opposite ends respectively. The first controlled coil is provided on a portion of the first drum core between its flanges and also a portion of the second drum core between its flanges. The second controlled coil unit includes third and fourth drum cores and a second controlled coil. Each of the third and fourth drum cores has circular flanges at its opposite ends respectively. The second controlled coil is provided on a portion of the third drum core between its flanges and also a portion of the fourth drum core between its flanges. The controlling coil unit is located between the first and second controlled coil units.

Abstract: A method of interconnecting a dual media component assembly for an automotive vehicle instrument panel includes the steps of mounting a first component to a first surface of a unitary bracket, fixing a second component to a second surface of the unitary bracket so as to create a dual component subassembly, and placing the subassembly within a chassis for mounting within the instrument panel.

Abstract: An enclosure for electrical switching apparatus has a base formed by a planar member which extends horizontally to support the enclosure on a support surface. The planar member is generally rectangular with an upturned flange along at least one edge and preferably along three edges, including the front edge and the adjoining side edges. At least one, and preferably a spaced pair of pry slots are provided in these three edges. The pry slots extend into the planar member and the flanges to provide leverage for pry bars. The flanges are stiffened by inwardly directed lips extending along their free edges. The enclosure includes a front section and a rear section with the planar member forming the base for the front section. The electrical switching apparatus is mounted in the front section so that the center of gravity of the enclosure is located there. Preferably, the pair of pry slots both in the front edge and side edges straddle the center of gravity.

Abstract: A PCMCIA card includes a support, circuit components for providing faxmodem functions with respect to the support, a housing containing at least part of the support, a retractable cord mechanism at least partly contained in the housing for connecting the electronic component with an external device for communications therewith, the retractable cord mechanism including a cord and a storage mechanism for storing at least part of the cord in the housing, and a connector coupled to the cord for connecting to the external device. Alternate embodiments use optical or radio signal coupling from the PCMCIA card and all embodiments do not require a separate telephone connector to a telephone wall jack.

Abstract: A mounting arrangement for communications network base stations within a tower interior wherein each base station is secured between upper and lower platform plates by a pair of co-axial swivel mounts. The swivel mounts allow the base stations to be rotated about a vertical axis between a first angular position suitable for the base station to operate and to allow the platform to be raised and lowered and a second position in which the base station door can be fully opened to provide access to the base station interior for maintenance purposes.

Abstract: A cabinet for housing first and second pieces of electrical equipment and having a first compartment adjacent a second compartment for housing the respective first and second pieces of electrical equipment. The cabinet has a first cover member overlying at least a portion of the first compartment and a second cover member overlying at least a portion of the second compartment and defining a seam therebetween. The cabinet also has a barrier positioned between the first and second compartments and extending generally transverse to the cover members. The barrier includes a wall and a drip channel, where the drip channel is integrally formed with the wall and extends longitudinally adjacent the seam to resist penetration of water into the cabinet.

Abstract: A modular plug which has an insulative housing comprising a front wall, a rear wall, a top wall, a bottom wall and a pair of lateral walls which are perpendicularly interposed between the top two bottom walls. There are a plurality of front longitudinal terminal receiving slots in the top wall adjacent the front wall. There is also a cable receiving cavity in the rear wall. A plurality of rear longitudinal terminal contact receiving slots are in the top wall and between the front longitudinal terminal contact receiving slots and the rear wall. A medial component housing cavity is interposed between the front longitudinal terminal contact receiving slots and the rear longitudinal terminal contact receiving slots. There is also a first plurality of conductors, each of which extends from the rear wall of the jack to adjacent a different one of said rear longitudinal contact terminal receiving slots.

Abstract: The invention relates to a housing for electronical components for two- or multi-channel systems. The housing includes a housing frame, which is separated by electrical screens into two or several electrically screened parts. At least two covers are detachably attached to the housing frame. The covers permit access to the electrically screened parts of the housing frame. Electronical components associated with each channel are arranged in a respective one of the electrically screened parts of the housing. It is possible to accommodate some of the electronical components in the covers. The covers can be provided with connectors.

Abstract: Robbery of a vehicle-mount electric apparatus can be prevented by only driving an operation panel to turn it upside down. The operation panel is disposed in front of the main body of the vehicle-mount audio apparatus, and is moved while being rotated about its rotary shaft. The operation panel moves between first and second states. In the first state, the normally used surface of the operation panel is used as the front surface of the apparatus, and in the second state, the surface other than the normally used surface is used as the front surface. When the operation panel takes generally a horizontal state during the motion of the operation panel 5, the rotary shaft thereof is positioned at one end of the motion range of the operation panel.

Abstract: In a multisided access communication distribution cabinet, an adjustable tie rod is configured as part of mounting units. The adjustable tie rod is located between grooming bars of the mounting unit, fitted within slots allowing for the adjustable tie rod to move within an area defined by the slots. Wires/cables are passed through an opening defined by the adjustable tie rod and one of the grooming bars. Once the wires have been located in a desired location, the adjustable tie rod is moved into close association with the grooming bar such that the wires are held in a fixed position. Thereafter the adjustable tie rod is placed in a fixed position thereby holding the wires/cables in a secure manner.

Abstract: In the case of a card cage for an electronic control unit having signal-processing analog and/or digital components, high-speed digital components, as well as components having both signal-processing functional parts, as well as high-speed digital functional parts and power components, which are arranged on a multilayer printed-circuit board and are electroconductively connected to a shared ground plane, the signal-processing components of each module having a shared connection to the common ground plane, the radiated interference from the control unit produced by high-frequency interference currents can be reduced, and high current densities in the ground plane and resultant potential shifts can be prevented from adversely affecting the signal processing, in that the signal-processing components are combined into signal-processing modules having at least one shared function, and the ground connections of all components of such a functional module are routed in each case via conductor connections to a common

Abstract: A free-space intra-shelf interconnect system is provided in which each of a number of circuit boards in a shelf communicates with any other board through free-space interconnects. Each board is equipped with a free-space transmit coupler to transmit a signal to a free-space receive coupler of an adjacent board. Simply sliding the boards in the shelf and latching them in place as usual, automatically aligns the transmit and receive couplers for optimum coupling. System configurations are provided for building a closed communication loop within the shelf, that allows for data communications between any board within the shelf. Logical addressing allows for interchangeability of boards within a shelf. This, in turn, allows for moving a defective board to the end positions of a shelf for debugging purposes. An extender board for testing and debugging purposes is also provided if free physical access to both board surface areas is simultaneously needed.

Abstract: An implantable cardiac defibrillator is provided. The implantable cardiac defibrillator includes a can, a storage cell for powering the defibrillator, and a circuit module disposed in the can for controlling the defibrillator. The circuit module has a first substrate, a first die coupled to the first substrate, a second die, and a second substrate coupled to and disposed between the first die and the second die. The second substrate has a first plurality of conductors to carry electrical signals to and from the first die and a second plurality of conductors to carry electrical signals to and from the second die. The die may be any of a number of types of electronic components, such as power transistors, memory chips, or others. The stacking of the die saves board space, allowing for further miniaturization or incorporation of additional electronic components.

Abstract: An electronic still camera is adapted for use with a portable computer which has a computer housing formed with a battery receiving chamber for receiving removably a battery pack therein, a power supplying device, and a set of first battery charging contacts mounted in the battery receiving chamber for connecting electrically the battery pack to the power supplying device so as to permit recharging of the battery pack when the power supplying device is active, and so as to enable the battery pack to supply electrical power to the portable computer when the power supplying device is inactive.

Abstract: The neutral cross bus in a switchgear assembly formed from two sets of side-by-side cabinets includes first and second neutral buses for the respective sets of cabinets. Each neutral bus is made up of a stack of flat conductors oriented horizontally in a main section extending across the cabinets of the set and vertically in a terminal section confronting the terminal section of the other neutral bus. The vertically oriented terminal sections are easily bolted together despite their limited accessibility when the two sets of cabinets are installed side-by-side. The flat conductors of the neutral cross bus are supported in their horizontal main sections by spaced supports formed by planar members with spaced horizontal slots set on edge and mounted by end flanges.

Abstract: A DC to AC power inverter having a housing with an AC power port for receiving an AC power module and a control port for receiving a control panel module.

Abstract: To the bottom of a display unit in a handy information terminal apparatus, a picture image scanner, a photographic camera or a printer may be physically and electrically mounted. Signal transfer is carried out between the handy information terminal apparatus and each of the scanner, the camera or and the printer. The handy information terminal apparatus is of a size which makes it easy to carry the handy information terminal apparatus and is combined with the scanner, the camera or the printer. The handy information terminal apparatus can be easily mounted on the scanner, the camera or the printer and obtained information can be accurately transmitted therebetween.

Abstract: An expandable modular data storage array for storing and backing up data transmitted from a host computer including a plurality of data storage devices, a plurality of substantially identical, vertically stacked storage device housings adapted to slidably receive a data storage device, and mechanical connection elements for releasably connecting the top of one storage device housing to the bottom of a storage device housing stacked thereon. The array is connectable to a host computer and receives data and corresponding parity data therefrom. The parity data are indicative of data intended to be stored, from which parity data the intended data are reconstructable.

Abstract: A control device for a vehicle A.C. generator which is used to supply a vehicle load such as a battery. The control device includes a semiconductor switching element for controlling a field current in a field winding of the generator. The control device also includes a ground pattern conductor arranged between a power source terminal connecting the semiconductor switching element and the load and a control signal input terminal for inputting a control signal to the semiconductor switching element. The ground pattern conductor is further connected to a ground terminal of the semiconductor switching element. This arrangement affords protection from short circuiting of the power source terminal and the control terminal.

Abstract: An equipment/distribution cabinet which contains electrical/electronic device modules. The cabinet allows for front, side and rear access for replacement, servicing and maintenance of the modules carried by the cabinet. The cabinet further includes mounting units which creates areas within which the modules are mounted within the cabinet. The mounting units connect to corner supports assisting in the front, side and rear access. The mounting units further include integrated wire and cable passage ways and tie bars allowing for organization of the wiring within the cabinet. The cabinet is produced to allow either top or bottom access and can accept a plurality of input voltage levels. The cabinet is constructed so that modules having a variety of different functional characteristics and sizes may be intermixed.

Abstract: An electronic cartridge that may include a cover which is attached to a thermal element. A substrate may be located between the thermal element and the cover. The cartridge may include a first pin which extends from the thermal element through a datum hole of the substrate. The cartridge may also have a second pin which extends from the thermal element through a first float hole of the substrate. The first float hole may have a major diameter and a minor diameter. The major diameter of the first float hole may be larger than the diameter of the second pin so that the second pin can move relative to the substrate. The first float hole allows movement of the second pin when there is a differential thermal expansion between the thermal element and the substrate.

Abstract: A seismic cabinet for containing electronic equipment. The cabinet includes a support bracket for attachment to the electronic equipment. Rails inside the cabinet allow attachment of the equipment and associated fanout panels to the cabinet. A removable screenlike top portion allows cable access.

Abstract: A circuit body (4) is received in an S-shaped configuration in a receiver (3) in a door. A protector (5) with a connector (6) is outwardly slidably provided inside the receiver (3). A circuit body fixing member (12) is provided at a front portion of the receiver (3), and a guide roller (15) is provided at a rear portion of the protector. The circuit body is wired from the fixing member (12) via the guide roller (15) into the protector and to the connector (6).Alternatively, a circuit body fixing member (12) and a guide roller (23) may be provided at a front portion of a receiver (10), the latter in such a manner as to be positioned inside the protector 27. The circuit body is held down by the guide roller (23) inside the protector.The circuit body is smoothly expanded and contracted with the opening and closing of the door.

Abstract: A motor starter assembly made up of sub-assemblies each formed from a circuit breaker 40 and a contactor 60 and positioned on a baseplate 20 with which a set of power bars 23 is associated. The baseplate includes a support area 21 for the sub-assemblies and a connection are preferably a bracket 22 that is overhanging in relation to the support area. The baseplate further includes power connection elements and or control connection elements provided on the bracket and the connection area to permit plugging in of the sub-assemblies on the baseplate along an engagement direction Z approximately parallel with the support area and perpendicular to a direction X of a set of bars.

Abstract: An assembly of electrical equipment having devices, such as circuit breakers and contactors grouped in pairs, included on a supporting baseplate. Each pair of devices includes a circuit breaker 40 and a contactor 60 and a baseplate 20 having power pins and control pins that cooperate with respective power and control terminals of the devices. Auxiliary units 50,70 are fixed to one of the devices 40,60 while being connected to control terminals 45,65,66 of the one device. The units 50,70 are connected to a linkage with a bus or a control and command system by plugging units 50,70 into control pins 81,82 of the baseplate 20.

Abstract: Switchgear is provided that includes a housing enclosing electrical components having switch blades that establish visible open gaps in an open position. The switchgear includes an array of operating controls and viewing provisions to observe the open switch blades. The operating controls and viewing provisions are accessible from a first direction and are arranged at a first area of the housing while cable interconnection provisions are accessible from a second direction and are arranged at a second area of the housing. Thus, operating personnel can utilize the viewing provisions and the operating controls without being exposed to the area of the cable interconnections. In one specific arrangement, an array of operational displays is provided, with the displays overlying the viewing provisions and being movable to permit use of the viewing provisions. In a preferred arrangement, the switchgear includes multi-pole switchgear assemblies which are assembled from individual pole-unit assemblies.

Abstract: An electrical element comprising a housing or casing, a heat generating part such as a high-tension resistor, a non-heat generating part such as a capacitor, and a resin filling the housing. Further, the electrical element also includes connectors for establishing external connections between the above-mentioned capacitor or high-voltage resistor, the connectors being arranged at positions suitable for them to dissipate heat from the high-voltage resistor and radiate heat outside the element.

Abstract: A PCMCIA card includes a support, circuit components for providing faxmodem functions with respect to the support, a housing containing at least part of the support, a retractable cord mechanism at least partly contained in the housing for connecting the electronic component with an external device for communications therewith, the retractable cord mechanism including a cord and a storage mechanism for storing at least part of the cord in the housing, and a connector coupled to the cord for connecting to the external device. Alternate embodiments use optical or radio signal coupling from the PCMCIA card and all embodiments do not require a separate telephone connector to a telephone wall jack.

Abstract: In the installation and removal of a fastener cap for covering a fastener which makes a front cover constructed as a first cover and a back cover constructed as a second cover fixed to each other by a fastener such as screw, which would appear on the exterior of products, the fastener cap is easily disassembled from the covers without marring the exterior of products, while maintaining an attractive appearance thereof. A back cover 20 which is coupled to a front cover 10 by means of a screw fastener 40, includes a fastener well 21 having a front assembly groove 23 and a back assembly groove 25 into which a front assembly projection 31 and a back assembly projection 32 on fastener cap 30 are respectively inserted during assembly.

Abstract: A housing assembly for electrical components includes a plurality of tubular housing sections which are fixedly interconnected. Portions of the housing sections are then removed to form openings in the housing assembly. The openings formed in the housing assembly may be formed in either interior or exterior walls of the housing assembly. Each of the tubular housing sections forms a compartment in which an electrical component may be mounted. By removing portions of a plurality of the interior walls of the housing assembly, a chamber which extends across end portions of a plurality of the compartments is formed. Front and rear end plates may be connected with the housing assembly. In addition, covers may be provided for openings formed in the exterior of the housing assembly.

Abstract: A D.C. tool switch assembly is provided with a pair of field effect transistors (FETs) maintained internally of the housing. The switch assembly is configured of a number of subassemblies maintained within the housing, including a contact subassembly having the motor and battery contacts and a pair of pivoting contacts. The field effect transistors are maintained on a second subassembly which nests within the housing and is substantially orthogonal to the contact subassembly. A post passes through the pair of FETs and is formed to engage a heat sink on each of opposite sides of the switch housing. The heat sinks are separate and distinct from each other and individually formed. Each of the heat sinks makes close contacting engagement with an associated one of the FETs. The post provides for interconnection between the FETs and the pair of heat sinks.

Abstract: A portable cover for covering at least a frontal portion of an electronic appliance. The cover is integrally formed of tinted, transparent plastic and is generally rectangular in shape. The cover has an open back portion for receiving a frontal portion of an electronic appliance, such as a VCR or stereo. A small lip extends upwardly from the bottom of the cover, at its rearward edge, to serve as a barrier against removal of the cover from the frontal portion of the electronic appliance. A plurality of pads are located on inner faces of the cover to prevent scratching of the appliance during placement and removal of the cover.

Abstract: A hybrid vehicle includes a power unit communicating power between a turbine alternator, flywheel and traction motor. The power unit stores DC power in capacitors and places the power on a DC bus for use in driving the induction machines. A housing includes at least one wall forming an enclosed perimeter, the wall including a plurality of fastener members extending therethrough. The power unit comprising a DC storage unit and DC bus and power switches connected with a heat exchanger provide signals to an AC bus wherein each is connected to each other to form a structural unit. The fastener members are connected through the wall and to the power unit for installation as a single unit in a vehicle.

Abstract: A lid of an electronic unit box has a plurality of first fixing ribs and a plurality of second fixing ribs on the top wall thereof which are arranged parallel. The first and second fixing ribs have step-shaped cuts in such a manner that the cuts are opposite to each other, so that when the box body is covered with the lid, the cuts of the fixing ribs are abutted against the opposite edges of the electronic unit to fixedly hold the electronic unit.

Abstract: A motor housing is made of glass material and includes a curved and convex reinforcing rib formed in the middle and inner peripheral portion. The reinforcing rib includes a thickness than the other portions of the motor housing for increasing the strength of the motor housing. The motor housing includes a number of stepped holes formed in the reinforcing rib and having two orifices of different sizes for engaging with the bolts and the heads of the bolts and for preventing the motor housing from being easily broken by the bolts.

Abstract: A dimming control system includes dimmer modules which receive dimming level information from a control module. Each dimmer modules includes a microprocessor which provides internal intelligence for controlling power to a load in response to the dimming level information. The control module receives industry standard protocol dimming information from various sources, converts it to dimming level information, and communicates the dimming level information to the dimmer modules through serial communication lines. The dimmer modules and control module are mounted in a rack which includes a backplane having nonvolatile memory device that retains configuration data even if the control module is removed from the rack. The dimmer modules implement a zero cross prediction method which includes detecting an actual zero cross, calculating an error, and adding the error to the period of a line power signal.

Abstract: A fuel dispenser includes a housing, a compartment in the housing, electrical controls and a terminal device in the compartment and a fixture extending into the compartment. The fuel dispenser is field-installed by connecting an external conduit to the housing and running unbroken electrical leads through the external conduit and the fixture. The electrical leads are terminated at the terminal device and the fixture is sealed against vapor transmission.

Abstract: A tubular shaped device for insulating an electrical component such as, but not limited to, a dry film capacitor. Along one edge of the device is a rectangular shaped cutout for receiving radially extending leads of the electrical component. The electrical component is secured within the device by spreading the device open, placing the electrical component within the spread-open device, positioning the leads of the electrical component within the cutout and finally permitting the device to once again assume its tubular shape.

Abstract: A battery compartment for use with an electrical device having a circuit to be powered by one or more batteries. The device has a housing for substantially housing the circuit and a surface with an aperture therethrough. Each battery has first and second terminals. The compartment includes a slidable drawer for insertion through the housing aperture and receipt of the battery, a plurality of connectors for electrical connection to the battery's terminals, and a plurality of conductors to eclectically connect the connectors to the device's circuit. The drawer is movable between an open position exposing at least a portion of interior of the drawer, and a closed position. An aesthetically pleasing, easy to access compartment which does not consume surface area of the device's circuit and which maintains electrical connection of the battery to the circuit whether the door is in the open or closed positions results.

Abstract: A PCMCIA card includes a support, circuit components for providing faxmodem functions with respect to the support, a housing containing at least part of the support, a retractable cord mechanism at least partly contained in the housing for connecting the electronic component with an external device for communications therewith, the retractable cord mechanism including a cord and a storage mechanism for storing at least part of the cord in the housing, and a connector coupled to the cord for connecting to the external device. Alternate embodiments use optical or radio signal coupling from the PCMCIA card and all embodiments do not require a separate telephone connector to a telephone wall jack.

Abstract: A controller for driving an AC motor includes a rectifying circuit, an inverting circuit coupled to the rectifying circuit via a DC bus, a control circuit for commanding operation of the inverting circuit, a logic circuit for directing operation of the control circuit in accordance with a predetermined control routine and a power supply circuit for powering the logic and drive circuitry. At least the rectifying circuit and the inverting circuit are supported on a power substrate module, while the control circuit is supported on a separate control circuit board. The control circuit board is mounted on and coupled to the power substrate module via conductors. Incoming AC power and control signals are transmitted to and controlled AC power is transmitted from the power substrate module via the conductors through the control circuit board. Separation of the circuitry between the power substrate module and the control circuit board permits significant reduction in the footprint of the controller.

Abstract: A box for covering components or the like and for preventing unwanted access thereto. The box comprises a mounting panel having a pair of opposed sides, a top portion, a bottom portion and a back portion. The back portion is adapted to receive a fastener for mounting the mounting panel to a mounting surface. A cover fastener is received within the mounting panel. A slot is formed in the mounting panel and a corresponding tang is located within the cover which is adapted to receive an alarm device therein and removably envelop the mounting panel. A second opening is located in the cover for receiving the cover fastener when said mounting panel is enveloped within the cover.

Abstract: A controller for driving an electric motor includes a rectifying circuit for converting AC power from a source to DC power, an inverting circuit coupled to the rectifying circuit via a DC bus for converting the DC power to controlled AC power in response to control signals and control circuitry for generating control signals for driving the inverting circuit in accordance with a preset control routine. The rectifying and inverting circuits are included in a power substrate module, while the control circuitry is included on a control circuit board separate from the power substrate module. The control circuit board is coupled to the power substrate module via a plurality of conducting pins and the controller circuitry is housed in an enclosure. A plurality of terminal conductors are supported on the control circuit board for transmitting power to and from the power substrate module via the conducting pins through the control circuit board.

Abstract: The switch (1) includes a box-shaped housing body which can be installed in a switch cabinet. A switching lever (5) and an additional device (4) are arranged on the front of the housing body, which lever and device can be passed outwards through a door of the switch cabinet.On the front, the housing body has a flat bearing surface (6) of defined size from which the switching lever (5) projects. The additional device (4) has a flat rear which corresponds with the bearing surface (6) and with an opening (3) in the switch cabinet door. Fastening means are furthermore provided, with whose aid the additional device (4, 19, 22, 25, 27, 30) or a further additional device (19, 22, 25, 27, 30), which can be replaced thereby, can be fixed on the bearing surface (6).

Abstract: A water purifier includes a plurality of filter members, and a water storage tank disposed horizontally adjacent the filter members. The filter members and water storage tank are disposed in a housing, and a base plate is disposed below the housing to form a space which extends beneath the water storage tank and the filter members. An electric pump, electric transformer, and circuit board are disposed in a first section of the space which is disposed beneath the water storage tank. To shield those electric elements from leaking water, a first wall projects downwardly into the space, and a second wall projects upwardly into the space. The walls separate the first section of the space from a second section of the space which is disposed beneath the filtering members. The first wall isolates downwardly dripping water from accessing the first section, and the second wall prevents sitting water on the base plate from accessing the first section.

Abstract: A smoke detector or alarm includes on its lower side a cylindrical cup which may be lined with ribbed foam rubber. The inside diameter formed by the liner is designed to mate with the end of a broom or mop handle so that the cup forms a reasonably firm fitting socket for the handle end. A wedge shape triangular adapter plate is mounted on top of the smoke detector and slightly spaced from the top by a round vertical stud. Secured either directly to the ceiling or to the usual smoke detector mounting fasteners is a receiver into which the adapter plate fits. The receiver is in the form of a horizontal wedge shape triangular slot, the bottom of which has a blind slot to accommodate the stud of the adaptor. The bottom of the entrance to the receiver is provided with a lip over which the adapter plate must move. The smoke alarm may accordingly be readily removed and replaced for battery changing, servicing, and testing without the use of a step ladder or step stool.

Abstract: A peripheral card includes a two-part metal cover mounting a printed wiring board on a U-shaped plastic frame. The wiring board is spaced from inside surfaces of the cover preferably by a pair spring clips mountable on side edges of the wiring board, each clip having an apertured intermediate bight portion overlying and in aperture burr scraped contact with ground contact pads on the board. Barbed-end spring fingers extend integrally from the bight portion preferably toward the board side edge to which it affixed and into scraped contact with respective ones of the metal cover parts as the metal cover parts are assembled together. The clips hold the board from movement in the cover and electrically ground any static electrical charges on the metal cover parts to the contact pads and to a ground socket in the frame, and electrically ground the metal cover parts to provide electromagnetic shielding of the electrical circuitry on the wiring board.

Abstract: The switching apparatus includes a stationary part (10) which is arranged in a switch cabinet and includes electrical power supply terminals (18) and electrical power distribution terminals (19). A moving housing body (20) accommodates a switch mechanism (27) and a disconnecting device for electrically connecting and disconnecting the housing body (20) from the stationary part (10). An additional device with an electrical auxiliary circuit is attached to the housing body (20) and is supplied with electrical power by wiring which is passed from the stationary part (10) to the housing body (20). The wiring includes mutually interacting plug connections (105, 107; 106, 108) which are positioned in the side walls (11) of the stationary part (10) and the side walls (A) of the housing body (20).

Abstract: A safety lock-out device prevents the insertion of an electrical power cord into an electrical power cord receptacle of an electrical appliance. The devise comprises a mounting plate fastened to the appliance and a cover plate hingedly attached to the appliance. The cover plate is movable between a first position and a second position such that, in the first position, the cover plate covers and prevents insertion of a power cord into the appliance receptacle. In said second position, the appliance receptacle is uncovered to permit insertion of a power cord into the receptacle. Extending a lock shank through aligned openings formed in flange members extending from the mounting plate and the cover plate locks the cover plate in the first position.