Abstract: A static mixing device adapted to be inserted in a fluid stream having a main flow direction with respect to a closed conduit, comprises at least two tabs inclined in the flow direction at a preselected elevation angle between 10.degree. and 45.degree. to the surface of the conduit. The tabs are spaced apart in a direction transverse to the flow direction, the length and width of the tabs being selected so as to generate pairs of oppositely rotating predominantly streamwise vortices at the tips of each tab, and downstream hairpin vortices interconnecting adjacent streamwise vortices generated by a single tab.

Abstract: A multiple fluid delivery system usable for the delivery of intravenous fluids to a patient from a plurality of fluid sources includes flexible tubing members for coupling the sources to a fluid junction member. The fluid junction member, wherein little or no interfluid mixing occurs, is coupled by an output conduit to a controllable pump. Output from the pump, via a further fluid flow conduit, can be coupled to the patient's catheter. The system can multiplex a plurality of different fluids. Spaced apart sequences of fluid quanta are injected into the output conduit from the fluid flow junction. The fluids are either mixed, or not, in the output conduit as desired. Operator interaction and control of the system can occur either through a display screen or by means of a bar code sensor. Hard copy records can be provided of fluid flow delivery schedules or other related information.

Abstract: The invention is a flush head fastener for joining two or more structural elements together. The structural elements have a fastener hole therein with one of the structural elements being countersunk to accommodate the head of the fastener. The fastener includes head and shank portions and a layer of material joined to the top of the head of the fastener which can readily be deformed to fill any gaps between the head and the countersink. Thereafter, the excess material can be removed leaving an aerodynamically smooth surface. The surface also will have no electrical discontinuities. The procedure for installing the fastener includes the steps of (1) providing two or more structural elements having a countersunk fastener hole therein (2) thereafter the fastener is installed in the hole (3) the layer of material is deformed so as to fill any gaps between the head of the fastener and the countersink, and (4) thereafter, excess material is removed leaving a smooth external surface.

Abstract: A system for displaying data to produce a three-dimensional image, and interactively modifying and transforming the data and the resultant image in response to user commands comprises control circuitry, a high-speed processor linked to the control circuitry, a memory linked to the control circuitry and to the high-speed processor, and a raster-based display linked to the control circuitry and to the memory. The control circuitry is programmed to transfer data from the memory to the high-speed processor, to control the high-speed processor in modifying and transforming the data in response to, and in accordance with, the user command to obtain transformed data representative of a plurality of two-dimensional rasters of pixels, to transfer the transformed data from the high-speed processor to the memory, and to control the raster-based display in displaying the transformed data.

Abstract: A color monitoring device is provided for measuring the concentration of a colored component in a flowing gas or liquid stream in which polychromatic light is passed through a frosted lens, then through a transparent sight tube through which the flowing stream passes, then through a second frosted lens, then through a sight mask which divides the light into two beams, one beam then passing through a first filter and the second beam passing through a second filter, the light beams passing through the filters then being directed to a first and second photoconductor, respectively. The first filter is one which absorbs light which is absorbed by the colored component to be measured and passes all other light. The second filter is one which passes light absorbed by the colored component and absorbs light of substantially all other wave lengths.

Abstract: A thermally responsive power device is disclosed employing a thermally sensitive unit in which are housed multiple vapor/gas filled capsules which expand and contract in response to temperature changes. The thermally responsive element is connected in a closed system through a conduit or tube to a remote diaphragm power or motion producing unit, and a temperature stable hydraulic fluid filling the space with the system moves the diaphragm in accordance with the expansions and contractions of the capsules. Several different embodiments for the capsules and their housings are shown, and all embodiments contemplate selective use of capsules with different vapor/gas fills to tailor the completed thermally sensitive elements to provide substantially equal temperature sensitivity in two or more regions of their working temperature range.

Abstract: A thermostatic control as shown and claimed in U.S. Pat. No. 3,135,849 in which the reed in this new disclosure has a pair of split legs. One leg of a first set of such pair is a flipper leg and the other leg of such first set carries a contact which is designed to be resistant to erosion from arcing and welding. One leg of another set of such pair of legs carries a contact which is designed to carry current in excess of 20 amp. at 250 V, the other leg of said other set is a flipper leg. A lost motion slot in a flipper spring provides a sequential drive for the two contacts carrying legs such that the arc resisting contact both makes and breaks the electrical circuit and the current carrying contact never makes or breaks the circuit but merely carries the current established by the arc resisting contact.The control as shown also eliminates a force multiplying adjusting lever and a pivot interface between such lever and the range lever.

Abstract: A thermostatic control has a power element, the integral cup shaped portion of which functions as a range lever adjusted by direct contact with a cam member. The cup element amplifies motion as well as transmitting motion. The normally deflecting portion of the diaphragm part of the power element is held stationary. This arrangement eliminates the necessity of a separate lever range and a bias spring and a lever pivot interface and results in energy spring. A molded drive lever provides the following functions: (1) drive switch mechanism lever; (2) a cut-in adjustment; and (3) a cut-out adjustment. The latter two functions are obtained without effect on the trip points of the load-controlling switch.