Abstract: A power distribution system that can be used in naval ships and submarines includes a first power generation system including at least one power source for supplying power to a first service distribution system that includes at least one dc distribution busbar for carrying a distribution voltage and a distribution current and at least one switchboard that includes protective switchgear with contacts. A zonal power distribution sub-system includes a zonal power supply unit for supplying power to at least one electrical load and a zonal energy store connected to the at least one switchboard of the first service distribution system for supplying power to the zonal power supply unit. The at least one power source is regulated according to a power source foldback and stabilizing characteristic and a power source starting characteristic. The at least one electrical load is regulated according to a load shedding and stabilizing characteristic.

Abstract: In order to upgrade firmware at network elements in a communications network a network upgrade protocol agent is installed on each network element. These agents run an upgrade protocol which allows an upgrade to be loaded onto a first network element and then broadcast through the network. The protocol includes notification messages, which change the state of the network elements to which the upgrade relates, download messages which include the firmware upgrade, apply messages which instruct relevant network elements to apply the upgrade, and inventory messages which send an inventory of firmware stored at a network element to neighboring elements to enable a determination to be made of whether a network element has received all relevant firmware upgrades.

Abstract: A quiet, non-binding collapsible spring mechanism for resiliently supporting a mattress includes a system of collapsible, sinuous springs, each having hooked ends for silencing the mechanism during use or collapse, as well as central offset portions for enabling the sinuous springs to compress to a greater extent than heretofore. Both rigid and yieldable support structures connect the spring mechanism to an item of furniture.

Abstract: A stocking is illuminated with flashing lights in response to movement by a wearer and is protected against water damage.

Abstract: An exciter assembly for supplying a field current to the rotor windings of a superconducting synchronous machine includes a pulse transformer having a stationary primary winding and a secondary winding that is mounted to the rotor of the superconducting synchronous machine for rotation therewith. A switched mode power supply supplies a pulsed voltage to the primary winding of the pulse transformer. The pulsed voltage developed at the secondary winding of the pulse transformer is supplied to the rotor windings through a rectifier semiconductor device and a pair of transfer leads. The rotor windings and a flywheel semiconductor device are located inside a cryogenic chamber or cryostat. The flywheel semiconductor device is connected in parallel with the rotor windings and operates in unison with the rectifier semiconductor device in order to provide synchronous rectification of the switched mode power supply output.

Abstract: A piece-threading device on a numerically controlled lathe comprises a supporting assembly having an inner rotatively driven body which, on a side thereof facing a workpiece to be threaded, comprises a plurality of threading tools, the rotatively driven body having a built-in electrical rotor (9) to which an electric stator (8) also built-in in the supporting assembly is operatively coupled, the stator (8) having a plurality of circumferential channels (6) for circulating therethrough a refrigerating and lubricating fluid.

Abstract: In a device for automatically adjusting the control cams of a forging machine, with a releasing means for releasing the operating position of a cam, the cam supporting shaft swingably supports, with a controlled movement with respect to the shaft longitudinal axis, radially extending brackets, in turn supporting a bar extending through the overall length of the control cam supporting shaft, the brackets being moreover provided, at each control cam, with cylinder-piston units including movable pins which can be engaged with recesses formed in the cams.

Abstract: A method of, and a device for, locating a piece with respect to a tool, utilize a measuring device for measuring a feeding speed, a driving direction and a feeding amount of the piece. The piece bears against two abutment rollers and is driven by a driving roller that is operated by a controllable motor operatively coupled to a machine numerical control apparatus. An output of the measuring device and an output of the controllable motor are both coupled to the machine numerical control apparatus.

Abstract: A pipe coupling connecting and disconnecting media conducting pipes, hoses or like conduits, which comprise two coupling halves situated at ends of the conduits; and a connector and a socket end having shutoff sleeves in both coupling halves.

Abstract: A matrix converter that can be used as part of a two-stage power converter has three ac three ac voltage lines AC1, AC2 and AC3 and two dc voltage lines DC1 and DC2. An array of six semiconductor switches 10a to 10f are arranged such that each of the three ac voltage lines AC1, AC2 an AC3 can be connected to one of the two dc voltage lines DC1 and DC2 when the associated switch is closed. A freewheel path is provided between the two dc voltage lines DC1 and DC2, which provides a fifth state of operation when all the switches 10a to 10f are open.

Abstract: It is known to assist cooling of a combustion chamber in a gas turbine by fixing an exo-skeleton tile structure to an inner annular combustion liner shell. To improve structural integrity of the exo-skeleton tile structure, each tile is formed with at least one rib extending circumferentially across the outer surface of the tile. An end of each rib projects beyond one edge of the tile, like tiles being linked at overlapping edges by the inter-engagement of a projecting rib of one tile with the rib of an adjacent tile. The inter-engaging ends of the ribs are relatively slideable circumferentially to allow thermal expansion and contraction of the exo-skeleton structure, but sockets are provided where the ribs engage so as to resist relative bending of the adjacent tiles about their linked edges and impart rigidity to the structure.

Abstract: An in-store advertising cover for installation onto and covering an upright security fixture includes a pair of front and rear, arcuate panels joined together along side, linear edges to form a lens-shaped cross section when the fixture is covered. A crease extends transversely across the arcuate panels between the side edges. The arcuate panels are foldable about the crease when the fixture is not covered, for example, during shipping, and are unfolded during installation. A lower half of the cover is initially installed on the fixture, followed by an upper half. Advertising material is applied on one or both arcuate panels. The advertising material is visible when viewed off to one side of the respective unfolded arcuate panels.

Abstract: A method for protection of STM-n/OC-n clear channel connections calls for a protection diagram allowing protection of STM-n/OC-n clear channel signals transmitted from a source point to a destination point. This protection allows overcoming a fall along the path between source point and destination point. It can be used in different types of network structure, for example “ring” or “mesh”. The method calls for duplication of STM-n/OC-n signals at the transmitting end of the subnetwork and transmission over two different routes which can be defined as work and protection paths. To ensure success of the protection diagram the work and protection channels follow different routes. At the receiving end, the signal is selected from the work path or the protection path depending on the quality of the received signals, the protection state and the external commands.