Abstract: The invention apparatus and method is practiced in large steam surface condensers and in one aspect comprises relatively narrow horizontal trays installed between the vertical tube bundles to drain the condensate from the upper bundle around the lower ones and thereby improve the heat transfer coefficient of the lower bundle(s). A second aspect of the invention apparatus comprises relatively narrow horizontal trays installed slightly below the lowest bundle to improve reheating of falling condensate up toward the saturation temperature of the condenser thereby reducing subcooling and the level of dissolved oxygen in that condensate. A third aspect of the invention apparatus comprises a partial hood retrofitted at the top of the central tube sheet air off-take entrance which is a unique element of the starburst/core pipe condenser design to thereby improve the air removal capability and consequently the performance of the condenser.

Abstract: The invention apparatus and method is practiced in large steam surface condensers and in one aspect comprises relatively narrow horizontal trays installed between the vertical tube bundles to drain the condensate from the upper bundle around the lower ones and thereby improve the heat transfer coefficient of the lower bundle(s). A second aspect of the invention apparatus comprises relatively narrow horizontal trays installed slightly below the lowest bundle to improve reheating of falling condensate up toward the saturation temperature of the condenser thereby reducing subcooling and the level of dissolved oxygen in that condensate. A third aspect of the invention apparatus comprises a partial hood retrofitted at the top of the central tubesheet air off-take entrance which is a unique element of the starburst/core pipe condenser design to thereby improve the air removal capability and consequently the performance of the condenser.

Abstract: A single-component white-emitting electroluminescent phosphor and its method of making are described. The single-component phosphor exhibits a white emission having an x color coordinate of 0.23 to 0.41 and a y color coordinate of 0.25 to 0.42. The phosphor is comprised of zinc sulfide activated with copper, manganese, chlorine, and, optionally, one or more metals selected from gold and antimony.

Abstract: An orange-yellow-emitting zinc sulfide-based electroluminescent phosphor is described wherein the phosphor has a brightness of greater than 10 foot-Lamberts. More particularly, the phosphor has a brightness of at least about 13 foot-Lamberts and an x color coordinate from about 0.51 to about 0.56 and a y color coordinate from about 0.42 to about 0.48. The zinc sulfide phosphor is activated with manganese, copper, chlorine, and a metal selected from gold and antimony.

Abstract: A mold in accordance with the present invention can be formed by a method which utilizes a fiber reinforced pre-ceramic resin composite which is cured and fired to form a Continuous Fiber Ceramic Composite (CFCC), or alternatively by use of a pre-ceramic matrix composite, which is cured, but not fired into a ceramic state.

Abstract: A locator and clamping means, for accurately locating and securing a workpiece onto the flat workplate or bed of a machining tool wherein the bed is of the type having a plurality of spaced grooves with one set disposed at right angles to another set, consists of jig into which the workpiece is secured and which has a flat surface wherein three accurately positioned non-aligned holes are located and consists of dowels removably secured within said respective holes and protruding therefrom. In addition, three apertured keys are slidably disposed within the grooves in the bed so that each key is capable of receiving one dowel. To facilate the insertion of each dowels into a respective aperture, the dowels are tapered and each aperture in the respective key is congruent to the taper. Then, when the three dowels engage the three keys, the jig and, in turn, the workpiece is acturately positioned on and secured to the bed.

Abstract: Small scale recrystallization apparatus is described using a container tube and a plastic plug with the end of the plug and a constriction in the tube mismating in a precisely controlled ellipticity of one so as to allow passage of solution while blocking formed crystals.

Abstract: The disclosure concerns a smooth continuous steel trough, free of longitudinal weld joints except for a flanged frame attached to its open top for supporting a cover grating. The apparatus for performing these steps comprises a conveyor table for moving and clamping a parallel edged sheet of steel while it is cut, such as by a torch, to predetermined length sides, and angled ends corresponding to the flow pitch for the resulting trough. The resulting isosceles trapezoidal section is then conveyed and aligned under an oscillatable convex mandrel or roller having a longitudinal clamping rib axially along its periphery for clamping the trapezoidal sheet near its center at the bottom of what is to be one of the equal side walls of the resulting trough. The conveyor and/or support for the sheet at the mandrel is vertically adjustable to compensate for different size mandrels and thicknesses of the sheets.

Abstract: The disclosure concerns a smooth continuous steel trough, free of longitudinal weld joints except for a flanged frame attached to its open top for supporting a cover grating. This trough is, for example, of the type embedded in the floor of a factory for the gravity and/or jet flow of contaminated coolants from machining operations.

Abstract: An anti-theft parking system comprising a free-standing post at each delineated area for the parking of a single vehicle supporting audible and illuminated signals and a control circuit so designed that when a vehicle is driven into the area so as to depress a road switch set into the pavement of the area and a coin of appropriate value is deposited in a coin box, a key may be removed from a key switch without actuating the alarms, but if the vehicle is removed from the parking area so as to release the ground switch without restoring the key, the alarms will be actuated. There is a panel which becomes illuminated by parking the vehicle which indicates that a coin should be inserted and a panel which becomes illuminated by removal of the key which indicates that the system is conditioned for operation.