99results about How to "Reduce the impact of damage" patented technology

A rear fairing system for a vehicle includes a roof foil on top of the vehicle roof and sidewall foils pivotally mounted to the vehicle sidewalls. The roof foil includes downwardly facing concavity and a roof foil curved convex upper surface extending laterally across the vehicle roof. A spring extends laterally across the vehicle roof in the downwardly facing concavity. A door foil extends aft of the roof foil with a curved convex upper surface continuing the roof foil curved convex upper surface. Cables extend from the vehicle rear doors to the sidewall foils adjacent the sidewall foil free edges. The cables are taut and strain the sidewall foils toward the vehicle rear doors with the vehicle rear doors closed.

The invention provides a metal rubber honeycomb composite soft sandwich component preparation structure and a method thereof. The metal rubber honeycomb composite soft sandwich component preparation structure includes a vacuum brazing furnace and a tooling fixture, the tooling fixture comprises a base and a support fixed to the base, a pressure plate is arranged above the base, and the support ismatched with an adjusting bolt in a threaded mode. The designed metal soft sandwich structure part is metal skin, the middle layer is a metal honeycomb core, metal rubber is clamped between the metalskin and the middle layer metal honeycomb core, under complex dynamic load, the elastic porous metal rubber mainly has the effect of damping vibration reduction, and a metal honeycomb core structure in the middle plays the role of impact resistance and energy absorption; and in addition, the metal soft sandwich structure further has the structural characteristics of light weight structure, sound absorption and thermal protection and the like. The preparation device is used for realizing the metallurgical and solid interface combination of an interface of the metal soft sandwich structure partunder the vacuum hot pressing brazing technology, and the comprehensive mechanical properties and environmental adaptability of the whole structure part are improved.

The invention provides a power photoelectric signal generator, belonging to a discharge simulating test device used for diagnosing insulating property of electrical equipment in a power department. The power photoelectric signal generator comprises a local discharge sampling processor containing a photoelectric sampling pipe, wherein the photoelectric sampling pipe is arranged on the upper surface of a box body of the local discharge sampling processor; 220V electric supply is introduced to two input terminals of an autotransformer B, one output terminal of the autotransformer B is sequentially connected with a capacitor C and a control switch K in series and then is connected with an upper electrode sphere, the other output terminal of the autotransformer B is connected with a lower electrode sphere, the upper electrode sphere is fixed on the lower part of an upper pressure plate, the lower electrode sphere is fixed on the upper part of a lower pressure plate, and a discharge gap is reserved between the upper electrode sphere and the lower electrode sphere; and the photoelectric sampling pipe is arranged in the collection range of discharge spark of the upper electrode sphere and the lower electrode sphere. The power photoelectric signal generator disclosed by the invention is smart and light, easy to operate and safe and reliable.

A semiconductor device has: a semiconductor substrate having a principal surface; a fuse circuit formed above the principal surface, the fuse circuit having fuse elements each having a predetermined breaking point; a first trench isolation region formed in a surface layer of the semiconductor substrate under the fuse circuit; and a plurality of active region dummies formed through the first trench isolation region in an area excepting a predetermined area around the predetermined breaking point. Although a dummy structure is formed also in a fuse circuit, a breaking margin is prevented from being lowered and a substrate damage is avoided, while surface flatness and line width controllability are ensured.

A soft rock stratum underground excavation large-section tunnel construction method comprises the following steps of conducting excavation on the upper portion of the center of an arc part to form an arc part small pilot tunnel, and arranging an arc crown vertical supporting system in the arc part small pilot tunnel; conducting excavation to form a left upper pilot tunnel, a left middle pilot tunnel, a right upper pilot tunnel, a left lower pilot tunnel and a right lower pilot tunnel in sequence, and reserving a core rock wall in each pilot tunnel; pouring inverted arc concrete on the left side and right side and inverted arc backfill; pouring the arc part of a tunnel and a side wall secondary lining; excavating the core rock walls; pouring inverted arc concrete and inverted arc backfill. A supporting system adopted in the construction method comprises the arc part small pilot tunnel, a manual hole digging pile, the arc crown vertical supporting system, a side wall preliminary bracing and a core rock wall bracing, wherein the arc crown vertical supporting system comprises a steel pipe support penetrating through the manual hole digging pile and the arc part small pilot tunnel, and an independent foundation is arranged on the bottom of the steel pipe support and located on the bottom of the manual hole digging pile. According to the soft rock stratum underground excavation large-section tunnel construction method and the supporting system, sedimentation of the arc part of the tunnel can be effectively controlled, excavation footage is large, construction progress is accelerated, arc part secondary lining can be realized early, and construction safety is guaranteed.

An electric wave transmitting and receiving apparatus of a portable terminal comprising: a rotating member axially installed in a mounting groove formed at an upper portion of a body to be rotated with a certain angle; a vertical polarization antenna installed at an upper of the rotating member, for rotating the rotating member around the axis by a pressure of a folder at the time of opening the folder of the portable terminal; an elastic member installed at one side of the rotating member, for placing the rotated vertical polarization antenna and the rotating member to original positions; a vertical polarization antenna connecting means for connecting the vertical polarization antenna to a printing circuit board mounted in the body; a circular polarization antenna installed at a side surface of the rotating member; and a circular polarization antenna connecting means for connecting the circular polarization antenna to the printing circuit board.