Abstract: An electrical wiring box having a pair of mounting elements associated therewith for permitting the quick and easy mounting of an electrical device within the wiring box. The wiring box includes first and second mounting portions each having a central opening and a pair of slots on opposite sides of the central opening. Each of the mounting elements includes a screw-receiving section adapted to be inserted into the central opening of a corresponding one of the mounting portions of the wiring box, and a pair of locking tabs adapted to be inserted into the pair of slots in the corresponding one of the mounting portions for attaching the mounting element to the wiring box and for properly positioning the screw-receiving section within its corresponding central opening. Each of the screw-receiving sections includes three thread-engaging members arranged to define a screw-receiving region therebetween and each having a deflectible thread-engaging tip directed into the screw-receiving region.

Abstract: A back-lighted display arrangement including a soft, compressible opaque light baffle sandwiched between a lamp assembly and a display panel. The light baffle has a grid-like configuration defining a plurality of compartments each of which is arranged to receive a different one of a plurality of lamps supported by the lamp assembly and to direct light emitted by the lamp onto a different one of a plurality of display areas of the display panel. The light baffle establishes a positive light-tight seal between the baffle and the lamp assembly and display panel for preventing light in one compartment from escaping into an adjacent compartment.

Abstract: A low-profile lighting fixture particularly suitable for low and medium height mounting installations. The lighting fixture includes a housing assembly comprising a base member and first and second end sections at opposite ends of the base member. The first and second end sections respectively contain a power supply ballast transformer and capacitor for the fixture. An upstanding bracket supporting a horizontally-oriented lamp-receiving socket is attached to the base member intermediate to the first and second end sections, and a generally-rectangular reflector having an opening therein is mounted to the base member in line with and intermediate to the first and second end sections with the lamp-receiving socket extending horizontally into the interior of the reflector via the opening in the reflector.

Abstract: An electrical bussing and jumper assembly for use with electrical switching devices such as circuit breakers in a three-phase distribution system. The bussing and jumper assembly comprises a plurality (three) of relatively thin, wide, bus plates stacked together in a compact sandwich-like array. Each of the plates has a plurality of jumper portions extending transversely through openings or cutouts provided in the bus plates superimposed thereover. The bus plates are insulated from each other by means of insulative coatings (e.g., of polyvinyl chloride) formed on the plates and also by means of sheets of insulative material (e.g., of polyethylene terephthalate) disposed between the coated bus plates and having openings therein aligned with the openings in the bus plates. Switching devices for use in a current distribution system are attached to the jumper portions of the bus plates, using threaded openings provided in the jumper portions.

Abstract: A lighting fixture adapted to be mounted to a support structure and wired with a minimum expenditure of time and labor. The lighting fixture includes an enclosure member defining a space for containing a power supply for the fixture, a support and wiring tray to which the power supply is mounted, a pair of hinge members jointly attached with the enclosure member and the support and wiring tray, and a cover and enclosure member removably attached to the hinge members by means of associated pairs of threaded bolts. In a typical installation procedure for the lighting fixture, the fixture is first mounted to a support structure by means of an attachment member secured to the cover and enclosure member, and one of the pairs of threaded bolts is removed from its associated hinge member to allow the remaining portion of the fixture to swing away and to hang suspended from the other pair of threaded bolts. As a result, the installer of the fixture has both hands free to perform the required wiring connections.

Abstract: A washable, stretchable, flexible, vinyl fabric cover for enclosing an adjustable arm assembly as used in a hospital or nursing home for supporting a television receiver for viewing by a patient. The adjustable arm assembly with which the fabric cover may be used includes forward and rearward pairs of elongated arms pivotally connected at adjacent ends thereof to a central pivot plate arrangement and at opposite ends thereof to front and rear pivot plate arrangements, respectively. The fabric cover of the invention includes first and second generally-flat, generally-rectangular, elongated flexible cover sections and a flat connecting sheet joining corresponding first ends of the first and second cover sections, the opposite ends of the cover sections being cup-like in configuration.

Abstract: Metal mounting brackets for mounting electrical wiring boxes to studs. A metal mounting bracket in accordance with a first embodiment of the invention is basically Z-shaped and includes a first flat portion adapted to be attached to an electrical wiring box, a second flat portion generally normal to the first portion and including a pair of generally U-shaped stud-embracing members, and a third flat portion generally normal to the second portion and having a pair of spaced, initially-flat pair of tabs extending outwardly from an edge thereof, each of the tabs having a pair of stud-biting teeth extending therefrom. The third portion further has a pair of tool-receiving openings therein, each adjacent to a corresponding one of the tabs and arranged to receive a standard adjustable plier. In mounting a wiring box to a stud, for example, to a metal stud, the U-shaped members of the second portion of the bracket are first arranged by an installer to embrace a first corner region of the stud.

Abstract: A connector fixture for joining a first structural member to a second structural member. The second structural member includes a central bore and a pair of lug receiving apertures disposed at a predetermined distance on opposite sides of the central bore. The first structural member includes a central bore adapted to register with the central bore of the second structural member and in addition has a pair of outwardly extending lugs which register with and are received in the lug receiving apertures in the second structural member, thereby properly positioning the first and second structural members relative to each other. A connector, such as a bolt and nut, is then inserted through the central bore of the first and second structural members to clamp the members together.

Abstract: A mounting arrangement for mounting a ballast transformer to a structural support member. As employed in accordance with the invention, the ballast transformer has an opening through the core portion thereof. A pair of L-shaped mounting members are mounted to the ballast transformer by means of a pair of elongated, compressible mounting pins, commonly known as "rollpins," which are driven through openings in the vertical portions of the L-shaped mounting members into opposite entrances of the opening in the ballast transformer. The mounting members are then secured to the structural support member by means of threaded fasteners which are inserted through openings in the structural support member and threaded into openings in the horizontal portions of the L-shaped mounting members. The threaded fasteners are selected to have lengths so that the threaded portions thereof will extend past the exposed ends of the mounting pins and be immediately adjacent thereto.

Abstract: An electrical bussing and jumper assembly for use with electrical switching devices such as circuit breakers in a three-phase distribution system. The bussing and jumper assembly comprises three relatively-thin, wide bus plates stacked together in a compact sandwich-like array. Each of the plates has a plurality of openings therein defining a pair of parallel side portions and a plurality of jumper portions transverse to and bridging the side portions. The jumper portions of bus plates are variously concave (top bus plate), flat (center bus plate) and convex (bottom bus plate) and spaced from each other such that when the bus plates are stacked together, the jumper portions are arranged in a ladder-like array and central portions of the jumper portions are all in a common plane. The bus plates are insulated from each other by means of insulative coatings (e.g., of polyvinyl chloride) formed on the plates and also by means of sheets of insulative material (e.g.

Abstract: Data storage and processing apparatus for storing and processing data for use by a video display monitor. The data storage and processing apparatus includes a random access memory having a general storage section arranged to store data including display character data to be displayed in horizontal display lines on the display surface of a video display monitor and control data for use in conserving storage space in the random access memory. The memory conservation control data contained in the general storage section of the random access memory includes coded spacer characters each of which specifies a spacing operation and a particular number of times that spaces are to be provided consecutively in a line of display data. Each coded spacer character is received and decoded by decoding circuitry coupled to an output of the random access memory.

Abstract: A swivel base assembly for supporting a device such as a video display terminal (including a video monitor and a keyboard) and including means for rotating the device through a large angle, for example, 270.degree.. The swivel base assembly includes a tray on which the device is positioned and a circular base member having a space for containing a circularly- wound data-carrying cable, such as a coaxial cable, for use by the device on the tray. The base member also includes a pair of upstanding spaced stop members formed therein and arranged to cooperate with a depressed stop member formed in the tray to establish the aforementioned 270.degree. range of angular rotation.

Abstract: Data storage and processing apparatus for storing and processing data for use by a video display monitor. The data storage and processing apparatus includes a random access memory having a general storage section arranged to store data including display character data to be displayed in horizontal display lines on the display surface of a video display monitor and control data for use in conserving storage space in the random access memory. The memory conservation control data contained in the general storage section of the random access memory includes coded three-character repeat sequences. Each coded repeat sequence specifies a repeat operation and a particular number of times that a display data character is to be repeated in a display line.