Abstract: A watertube boiler system is disclosed which provides a plurality of radiant burners mounted within a housing in parallel, spaced-apart relationship. Individual burners are encircled by heat cells comprised of watertube coils which are in tangential juxtaposed relationship achieving a high view factor to the burner surfaces. Premixed fuel and air combusts on the outer surfaces of the burners which radiate energy to the tubes forming the heat cells. The ratio of combustion surface area to heat cell volume is within an optimum range for minimizing NOX and CO emissions.

Abstract: A blower assembly includes a first tubular duct in pneumatic communication with a second tubular duct arranged in a generally oblique orientation relative to one another. A thermostatic switch effects actuation of a plurality of blower fans mounted at an entrance opening at a lower distal end of the first tubular duct to direct heat through the first and second tubular ducts. V-shaped spring plates mounted within side walls of the first tubular duct receive the respective first and second legs of a base assembly mounting the logs to be heated. An optional moisturizing and deodorizing dispenser assembly is mounted to the second tubular duct structure for dispersion throughout a room environment.

Abstract: A shoelace replacing and fastening device comprising an elongated strip, a strip insert and a clap. Rivet fasteners are used to secure the clasp on one shoe eyelet and to secure the elongated strip to the opposite shoe eyelet of where the clasp is located. The elongated strip is made of a flexible plastic material and has openings for releasably receiving a strip insert at one end of the elongated strip. The strip insert is made of a relatively rigid but flexible plastic material. The elongated strip and the strip insert have a plurality of interlocking hook elements. The hook elements of the strip insert are designed to interlock with the plurality of hook elements of the elongated strip. The clasp is fastened on a shoe eyelet, and the elongated strip fastened on the opposite shoe eyelet to that of where the clasp is fastened.

Abstract: The problem of designing an impingement plate type heat exchanger (10) for exchanging heat between a pair of fluids wherein one of the fluid is a gas, such as air, is solved by providing a stack of plates (12) including impingement orifice plates (14), spacer plates (16) and manifold plates (18, 20). The impingement orifice plates and the spacer plates cooperate to define first and second flow paths (F and E) generally parallel to each other and perpendicularly through the plates for the liquid and the gas, respectively. The first flow path (F) for the liquid is tortuous through orifices (56) of the plates. The manifold plates define flow passages (24) for distributing the liquid to the first tortuous flow path. The flow passages in the manifold plates extend generally parallel to the plates.

Abstract: An apparatus for generating measuring values representing the thickness of a coherent fiber material, includes an optical device having a light transmitter emitting a light beam and a light detector, an arrangement for guiding the fiber material between the light transmitter and the light detector and a device for processing signals generated by the light detector. The light detector comprises an image processing CCD member aligned with the light beam emitted by the light transmitter.

Abstract: The disclosure depicts in a two-way broadband communications network employing a carrier sense multiple access with collision detection protocol an apparatus and method for controlling station transmit signal levels. Signal level detection circuitry is coupled to one or a plurality of locations in the network transmission medium to determine the signal level generated by each of the plurality of stations periodically transmitting into the medium. The detected signal level from a station is compared to a predetermined range of appropriate values for the station and where the station is transmitting signals outside of the predetermined range, a correction factor is applied to the station to adjust the transmit levels of the station.

Abstract: 2-nitro-5-(substituted-phenoxy)benzoic acids and esters, salts, amides, and acyl halides thereof comprise a class of compounds that are highly effective herbicides.