Abstract: A shielding door for an electromagnetically shielded room. The door has a door panel which is hingedly mounted. Attached to the door panel is a sheet-metal shroud which is movable between a closed-door position remote from the panel and an open-door position near the panel.

Abstract: A suspension pack for supporting articles in point-of-sale advertising. The suspension pack includes a body folded to provide wall portions in face-to-face contact, and a suspension member extending through a slit in the fold. A base portion of the suspension member has at least one resilient tongue which engages the fold to resist withdrawal of the suspension member from the body.

Abstract: A method for communicating with a plurality of hosts connected to an X.25 network and for selectably using a character as a control character or a data character. Each character received from the X.25 network is inspected to determine if it is one of a set of reserved characters. If so, the character is encoded before being sent to its final destination. Data intended for the X.25 network is inspected for the presence of a predetermined control character. If the control character is present, the next character is inspected to determine whether it is a command character or an encoded data character. If this next character is an encoded data character, it is decoded and provided to the X.25 network. If this next character is a command character, then the command is executed. The method allows the use of any character as either a command character or data character. Data transfer between the DTE and DCE is assigned a PAD and a virtual channel number which corresponds to a particular host on the X.25 network.

Abstract: A banana plug of unitary construction with an improved spring fit and superior spring and fatigue resistant characteristics. The tip portion of the plug which provides electrical contact is formed from a plurality of slightly arched tangs formed around a longitudinal axis. The method of construction includes the steps of milling the tip as a solid cylindrical piece, tapping same along its longitudinal axis, and providing a plurality of cuts in planes passing through the longitudinal axis. The tangs are then suequentially forced apart and crimped back together at their distal ends by a specially constructed tool.

Abstract: There is disclosed a syrup delivery system for carbonated beverages which provides delivery of beverage syrup from a syrup container to a beverage mixer. The syrup delivery system comprises a source of pressurized gas, conveniently the CO.sub.2 gas source which is also used to carbonate the water used to mix the carbonated beverage, and a syrup container. The syrup container comprises a rigid drum having an opening with a closure and a pressurizing fitting for connection to the source of presurized gas. A collapsible bag for holding the syrup is fitted inside of the rigid drum and is connected by means of a double ended connector through the closure to the beverage mixer. In operation, the CO.sub.2 pressurized gas is introduced into the rigid tank between the inside of the tank and the outside of the collapsible bag thereby forcing the syrup out of the bag and to the beverage mixer at a constant pressure.

Abstract: Apparatus for incinerating refuse or the like in a furnace where the flue gases of combustion are combined with secondary air for afterburning the gases in an afterburning zone. The flue gases are dammed before entering the afterburning zone so as to increase retention time of the flue gases in a zone of uniform temperature in the furnace space, then are accelerated in a venturi-like manner in the afterburning zone, and then are decelerated in a venturi-like manner in the afterburning zone. Secondary air is injected across the front of the afterburning zone in a direction opposite the flow of the flue gases so as to further increase the retention time of the flue gases in the furnace space, and so that the combustible components entrained in the flue gases are burnt completely before entering the afterburning zone.

Abstract: Method and apparatus for roll forming and marking sheet metal. Sheet metal is embossed with an identifying relief pattern as the sheet metal moves through the nip between first and second forming rollers of a roll-forming machine. More particularly, sheet metal is embossed with first and second embossing rollers juxtaposed so that there is a nip therebetween. Sheet metal moves through the nip between the first and second embossing rollers as the sheet metal moves through the nip between first and second forming rollers. Sheet metal products are easily and economically marked with permanent identifying relief patterns.

Abstract: Method and device in the antenna and receiving system of a radio theodolite, wherein the radio signal arriving from the transmitter of the object (31) to be measured is received by means of at least three antennas (1 . . . n-1) in the antenna field (AK) as well as by means of a reference antenna (n). The signals received from said antennas are passed to the receiving system, being controlled and selected by an antenna-selection switch (10a). By means of said system, the phase differences between the signals of different antennas are detected and measured, on the basis of which phase differences it is possible to calculate the angles of incidence (.alpha.,.epsilon.) of the signals on the basis of the known coordinates of location of the antennas in the antenna field (AK). In the method an outer reference antenna (n+1) is used which does not belong to the antenna field (AK) proper. The phases of the antennas (1 . . .

Abstract: An axial flow carbon black reactor for producing carbon black particles having a relatively narrow particle size distribution. Feedstock oil is introduced into the reactor by a spray nozzle located coaxial with the longitudinal center line of the reactor. The oil spray flows either in the countercurrent or the concurrent direction relative to the flow of hot gas through the reactor and produces an oil spray pattern covering either substantially the entire frontal area of the hot gas flow or substantially less than the frontal area. Countercurrent feedstock flow increases coverage of the gas flow area by the oil spray and narrows the particle size distribution of carbon black produced by the reactor, and concurrent feedstock flow produces the opposite result.

Abstract: Sediment barrier for reducing the erosive energy of water flow through on a watercourse such as a surface, a rill or similar channel, and for increasing the deposition of sediments therein. The sediment barrier includes a plurality of individual strands emanating outwardly from a foundation common to all the strands, and forming a structured flow-permeable array having a certain shape to extend outwardly from the watercourse on which the barrier is placed. The individual strands preferably are crimped or otherwise distorted in external configuration so as to provide fiber-to-fiber cohesion which helps maintain the overall array of the barrier. The sediment barrier is anchored in place on a surface or within a rill or gully, so as to maintain the strands in upright relation to the watercourse.

Abstract: A snap-in glazing pocket filler is disclosed for use with a structural frame member having an unused glazing pocket. The glazing pocket filler includes an elongated metal plate having front and rear faces and being dimensioned to cover said glazing pocket. A pair of plastic retaining legs are fastened to the elongated metal plate and extend rearwardly and outwardly thereof to engage the walls of the glazing pocket. In one aspect of the invention, the plastic retaining legs are pivotably fastened to the metal plate such that when the glazing pocket filler is snapped into the glazing pocket, the legs pivot outwardly to facilitate engagement of the legs with the pocket walls. In the disclosed embodiment, the plastic retaining legs comprise rigid stems having flexible barbs projecting outwardly therefrom to engage the pocket walls. The flexible barbs and rigid stems are coextruded of flexible and rigid polyvinyl chloride.

Abstract: An improved memory control and refresh apparatus as shown. For memory read operations, the read only memory and the random access memory are controlled by the NCSROM conductor (41) and the NCSRAM conductor (40), respectively, so that the read only memory and the random access memory do not compete for control of the data bus (20). However, the NCSRAM conductor (40) is not used to control the random access memory during write operations. Therefore, when transferring blocks of data from the read only memory (60) to the random access memory (61,62) the NCSROM conductor (41) is active during both reading of data from the read only memory (60) and writing of the data to the random access memory (61).

Abstract: A data and power transmitting/receiving system applicable to a home automation system. Plural terminal units and associated communication units are connected via a common signal bus. Each terminal unit may operate an electrical load to be controlled remotely, and may include control switches for operating such loads at a number of remote locations. Each communication unit generates an n-bit data signal, each bit corresponding to the desired function of a corresponding terminal unit. A sync signal is combined with the data signal in time sequence such that the respective communication units can identify which signal operates which terminal unit. The sync signals also can supply DC power to ther respective communication units.

Abstract: An apparatus for maintaining a constant temperature within a vessel immersed in a liquid by surrounding a portion of the vessel, extending above the surface of the liquid, with a wick. The wick conducts liquid up to a predetermined point on the vessel and maintains the liquid at that point, regardless of changes in the level of the liquid due to evaporation. The wick is encased within a layer of heat insulating or heat conducting material to further aid in maintaining a constant temperature within the vessel. A second embodiment, including alternating layers of heat conducting and heat insulating material, is disclosed for increased temperature control. The disclosed apparatus is particularly useful for maintaining a constant temperature within a vessel attached to a scientific instrument, such as a port volume and surface area analyzer.

Abstract: A device for tissue sampling by thick needle punctuation including a needle assembly including a hollow first needle and second needle extending through the hollow first needle. The needle assembly is contained in a housing having an opening through which the needles extend. Compressed springs in the housing are caused to expand to urge the needles away from the housing during the sampling of tissue. A rod is provided extending from the housing to simultaneously place the springs in a compressed condition.