Abstract: A testable logic circuit includes parallel registers (72)-(80) for interfacing with a common internal bus (70). The parallel registers (72)-(80) are individually addressable by an address decoder (104) for storage of test vectors therein. These test vectors are then applied to associated logic circuits. Individual shift register latches (92)-(102) are provided at imbedded locations therein. The shift register latches are interfaced with a serial data link to allow serial loading of data therein. The parallel latches function in both the test mode to store test vectors for application to the associated logic and also in the operational mode for storage of logic data. Use of parallel registers increases the speed at which data is scanned into the device.

Abstract: A logic circuit that has a plurality of stages that are driven by a clock source that provides at least 2 clock signals and includes at least a single latch stage located between two of the plurality of stages is configured with field effect transistor technology. The latch stage includes an isolation means for isolating the preceding circuit of the plurality of stages from flow-through of the clocks and signals that are connected to the latch stage, and a latch circuit for storing the data that is applied to the latch stage between clock pulses. A plurality of latch stages can easily be configured as a shift register latch.

Abstract: A circuit and method for a display controller especially adapted for display memories organized in arrays. The invention permits high speed modification of the contents of a display by generating the address signals of a selected linear pattern as the data block to be modified is retrieved from the display memory. For vectors, the addresses are generated in the same time as required for data block retrieval. The invention also permits calculation of the addresses of simple curves as the data block to be modified is retrieved, though calculation times typically are longer than for vectors. Modified Breshenham's algorithm is used for the address calculation.

Abstract: A photographic printer of the type wherein a web of photographic material is advanced to and from an exposure station and wherein individual exposure areas of the photographic material are selectively marked by a thermal marking system. The thermal marking system of the present invention includes a thermally activated marking tape and a thermal print head which selectively applies thermal energy to portions of the tape. A frictional engagement between the photographic material and tape results in a movement of the tape with the photographic media when the media is driven through the printer. In a preferred embodiment, the friction between the tape and media is selectively established by intermittently establishing an intimate contact between them.

Abstract: A recirculating bathtub having a single manifold extending along each side of the tub to supply water from a pump and aspirated air to a plurality of tub inlets. Each manifold comprises integrally molded, preferably blow-molded, air and water conduits isolated from one another except at nozzle housings integrally formed in the water conduit and vented to the air conduit. A nozzle is positioned in each housing and is sealed in the housing to receive water from the water conduit and air from the air conduit. The integrally formed conduits and nozzle housings eliminate the need for clamped or welded joints, and it is unnecessary to drill or open the manifolds for nozzle installation or air passage. The pump and the manifolds are self-draining into the tub when the tub is emptied.

Abstract: Improved light reflector apparatus for use in an electronic flash unit or the like is formed by an injection molding operation, which causes both precise shaping of a reflector and accurate mounting of the reflector securely within a housing. A light-reflecting flexible sheet is placed in a mold so that its light-reflecting front surface is centrally positioned adjacent a mold forming surface. The forming surface, which is larger than the sheet, has a contour adapted for shaping the sheet to reflect light into a beam of illumination. Liquid plastic is injected into the mold under pressure against the opposite surface of the sheet, thus pressing its light-reflecting surface into intimate contact against the forming surface. Because the sheet is smaller, the border of the forming surface is not covered by the sheet. Plastic flows beyond outer edges of the sheet against the uncovered border of the forming surface.

Abstract: Disclosed is a trailer for simultaneously carrying a wheeled motor vehicle and a boat. The trailer uses vehicle ramps mounted forward of the trailer wheels to provide a platform upon which the motor vehicle is carried. An inclined hull supporting structure is mounted at the rear portion of the trailer so that the boat can be carried with the bow positioned above the motor vehicle. The trailer has a frame which is slidably adjustable upon a wheel carriage to allow shifting the load for varying load conditions. The trailer is constructed to allow loading and launching of the boat independent of whether a motor vehicle is thereon.

Abstract: A multi-sectioned, decorative panel for use in a bathtub surround or the like, the panel having an overall decorative pattern on the exposed surface thereof. The sections of the panel are retained in assembly with the overall decorative pattern of the sections in exact registry and alignment by means of an adhesive strip secured to the section edges and forming a hinge about which the panels can be folded for packaging and shipping and which remains in place during installation, so as to prevent misalignment of the panels, disruption of the overall decorative pattern, and any water leakage between the panel sections. The method of making the multi-sectioned panel is disclosed, as well as the method of installing the panel on a wall surface.

Abstract: Improved light reflector apparatus for use in an electronic flash unit or the like is formed by an injection molding operation, which causes both precise shaping of a reflector and accurate mounting of the reflector securely within a housing. A light-reflecting flexible sheet is placed in a mold so that its light-reflecting front surface is centrally positioned adjacent a mold forming surface. The forming surface, which is larger than the sheet, has a contour adapted for shaping the sheet to reflect light into a beam of illumination. Liquid plastic is injected into the mold under pressure against the opposite surface of the sheet, thus pressing its light-reflecting surface into intimate contact against the forming surface. Because the sheet is smaller, the border of the forming surface is not covered by the sheet. Plastic flows beyond outer edges of the sheet against the uncovered border of the forming surface.

Abstract: Apparatus is shown for substantially increasing the feed rate of pulverized material into a pressurized container. The apparatus includes a rotor that is mounted internal to the pressurized container. The pulverized material is fed into an annular chamber defined by the center of the rotor. A plurality of impellers are mounted within the annular chamber for imparting torque to the pulverized material.

Abstract: Apparatus is shown for feeding a slurry to a pressurized housing. An impeller that includes radial passages is mounted in the loose fitting housing. The impeller hub is connected to a drive means and a slurry supply means which extends through the housing. Pressured gas is fed into the housing for substantially enveloping the impeller in a bubble of gas.

Abstract: A device for pressurizing pulverized coal and circulating a carrier gas is disclosed. This device has utility in a coal gasification process and eliminates the need for a separate collection hopper and eliminates the separate compressor.

Abstract: A safety towel bar for a plastic wall surround panel for showers and tubs comprises a substantially flat plastic wall panel adhesively secured to a dry wall which is secured to a framework. A pair of laterally spaced rearwardly opening upright channels are integral with the panel and receive the ends of a towel bar, which are nested, supported and secured upon a pair of laterally spaced brackets secured to the dry wall and extend into the channels.

Abstract: Method and apparatus are shown for the continuous feeding of pulverized material to a high pressure container. A rotor is located within the high pressure container. The pulverized material is fed from a feed hopper through a stationary feed pipe to a vented spin-up chamber to a plurality of two-stage sprues mounted in the rotor. Control nozzles downstream from the sprues meter the flow of coal through the sprues.

Abstract: Method and apparatus are shown for control of continuous feeding of pulverized material to a high pressure container. A rotor is located within the high pressure container. The pulverized material is fed from a feed hopper through a stationary feed pipe to a vented spin-up zone chamber to a plurality of sprues mounted in the rotor. Control of the pressure within control nozzles downstream from the sprues adjusts the flow rate of coal through the sprues.

Abstract: A storage unit adapted for attachment to a plane support surface, such as a flush interior door. The unit is thermoformed to provide a pair of side rails spaced inwardly from planar edges and lying on either side of a central planar portion. The central planar portion is provided with vertically spaced horizontal ribs spanning the rails to provide shelf surfaces. The side rails extend from the top of the unit to the bottom, and the uppermost and lowermost ribs blend vertically into the upper and lower extremities of the unit to provide additional support when the plane edges and the plane central portions are adhesively secured to the support surface. The unit can be provided with sliding doors, towel bars, shelf retention means, and the like, if desired.

Abstract: A bracket for interconnecting a vertical post and a support element, typically a vertical post for supporting a guard rail surrounding a wooden, above-ground deck. The post can be either wooden or metal, and the identical bracket which connects the post to the deck can be simply inverted and utilized to inter-connect the post and the upper guard rail. The bracket supports the upstanding post at each end from adjacent vertical and horizontal surfaces of the deck structure and/or the handrail structure by means of integrally formed flanges and flange extensions which are in flat-wise contact with the respective surfaces on either side of a central recess which receives the post. The flanges and flange extensions, which are at right angles to one another, stabilize the post both vertically and laterally, particularly since they provide laterally spaced fastener locations beyond the confines of the post itself.

Abstract: A signaling device to be launched underwater having a fuze body, a time dy element, an ejection charge and at least one carrier having a pyrotechnic composition attached to a parachute. The ejection charge is ignited by an electric squib which is detonated by voltage from a sea water battery. The battery is sealed from sea water until a valve opens to permit entry of water into the fuze body. An electronic deplay module is electrically connected between the sea water battery and squib to delay detonation of the ejection charge until the signaling device has assumed a stable vertical position at the water surface.

Abstract: A camera includes (1) a socket for detachably receiving a flashbulb, (2) a flash sensing member for detecting the presence and absence of a flashbulb in the socket, (3) a diaphragm for adjusting an exposure aperture as a function of whether the ambient light is bright or dim, and (4) a photosensor, responsive to visible light and infrared (IR), for controlling an exposure in accordance with the total visible light and IR passing along a light path to energize the photosensor during an exposure interval. An IR-attenuating filter is mounted for movement between a normal first position in alignment with the light path for effectively blocking IR from impinging upon the photosensor, and an actuated second position outside the light path to enable IR to energize the photosensor.