摘要:
A gas-blast circuit-breaker comprises arcing contacts provided with nozzles of the same diameter, operating means ensuring an original movement of a mobile one of the arcing contacts in the opposite direction to that of the mobile main contact at the opening of the device.
摘要:
An unmanned aerial vehicle delivery system utilizes an unmanned aerial vehicle (UAV) to deliver packages between an initiation point and delivery points at a raised elevation. One advantage of the system is that the UAV engages the delivery points at a raised elevation, rather than the ground level. The UAV docks through an elevated structure at the delivery point for delivering the package and replenishing a power source. The elevation of the delivery point is adjustable because the tower is comprised of identical sections that allow for stacking to a desired height for UAV landing at a docking end. The package is conveyed from a docking end and through a central shaft of the elevated structure by means of an elevator. The package then travels to a lower structure for pickup. After delivery, the UAV recharges a battery and continues on the delivery route.
摘要:
An aircraft cabin management system that provides passengers and crew with a number of entertainment and productivity enhancing options. Such options include, without limitation, audio, video, control and status of aircraft data systems and electro-mechanical devices. Located proximate to each seat and in various other strategic locations throughout the cabin is a control unit that acts as the primary means of passenger and crew interaction with the cabin management system. Using a multi-cast distribution methodology, over wired or wireless distribution, allows for an unlimited number of clients to have access to each available audio/video program. This allows the system to be fully scalable from a small 4 seat mobile platform to a large 800+ seat mobile platform. While particularly drawn to aircraft, the cabin management system is also applicable to other venues that have identifiable seating locations such as buses, passenger ships, hotels and auditoriums.
摘要:
A system and method for emulating or monitoring the communications behavior of any system component connected to a data bus. These functions are accomplished through the implementation of software component emulators (SCE) that encode and decode message data for any system component automatically. The present invention includes a means for development of an interface specification based on information contained in an Interface Control Document (ICD), and enables the user to create the ICD file without having to worry about formatting considerations, and view and define message data in a meaningful, human-readable format. The information in the ICD is automatically reduced to an application that combines the user-friendly, time-efficient aspects of a traditional SCE with the flexibility and universality of a bus monitor.
摘要:
4-Amino-1-((2R,3S,4S,5R)-5-azido-3,4-dihydroxy-5-hydroxymethyl-tetrahydro-furan-2-yl)-1H-pyrimidin-2-one (I:R1=R2=R3=R4=H) and prodrugs thereof are hepatitis C(HCV) polymerase inhibitors. Also disclosed are compositions and methods for inhibiting HCV and treating HCV-mediated diseases, processes for making the compounds and synthetic intermediates employed in the process.
摘要翻译:4-氨基-1 - ((2R,3S,4S,5R)-5-叠氮基-3,4-二羟基-5-羟甲基 - 四氢 - 呋喃-2-基)-1H-嘧啶-2-酮(I :R 1 = R 2 = R 3 = R 4 = H),其前药是丙型肝炎(C) HCV)聚合酶抑制剂。 还公开了用于抑制HCV和治疗HCV介导的疾病的组合物和方法,用于制备该方法中使用的化合物和合成中间体的方法。
摘要:
A method of synchronizing drive to a gas-insulated circuit breaker with the voltage waveform applied to the terminals of the circuit breaker so as to cause the circuit breaker to switch at a computed target instant that is as close as possible to an instant corresponding to a certain amplitude level in the voltage waveform, wherein the pressure of the insulating gas inside the circuit breaker is measured immediately before said switching, and wherein said measurement is used together with prerecorded data representative of variation in the dielectric characteristic of the circuit breaker as a function of the pressure of said insulating gas in order to optimize computation of said target instant.
摘要:
A device for temporarily inserting an electrical component such as a varistor connected to a contact arm carrying a metal contact ring in parallel with the contact of a circuit-breaker comprises a small diameter metal tube mechanically joined and electrically connected to the exterior of the main mobile contact. A rod can slide inside the small diameter metal tube. The rod has at a first end, a metal contact sleeve which can come into electrical contact with the metal contact ring. The sleeve abuts a first end of the small diameter metal tube. The second end of the rod carries a conical abutment. The second end of the tube has a bore which terminates in a conical interior shape profile complementary to and sized to that of the abutment.
摘要:
A high tension circuit-breaker has an insulating case filled with a dielectric gas such as SF.sub.6. A high capacitance capacitor and at least a varistor are electrically interconnected in parallel and are connected to a first terminal. The capacitor and varistor are associated with an insertion mechanism which momentarily inserts the capacitor and varistor in parallel with the arcing contacts during circuit-breaker disengagement or engagement. The insulating case is extended by at least one conductive case housing both the capacitor and at least part of the varistor.
摘要:
A circuit breaker comprising, for each pole, at least one interrupting chamber having fixed contacts and moving equipment including a moving contacts, and in parallel with each interrupting chamber series circuit comprising a varistor and a switch, said switch being open when the circuit breaker is disengaged and being closed when the circuit breaker is engaged. The switch comprises a moving contact driven by the moving equipment when the circuit breaker is performing an engagement operation, with the moving contact being constrained to follow the movement of the moving equipment when the circuit breaker performs a disengagement operation, but with a certain delay.
摘要:
The invention relates to a method for treating at least one surface of a substrate based on sulphur polymer intended to be covered with a coating, said method comprising, prior to depositing the coating onto the surface of the substrate, a step of bringing the surface of the substrate into contact with a treating composition comprising at least one reducing agent.