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121results about How to "Protected from vandalism" patented technology

Semiconductor device

A semiconductor device of unipolar type has Schottky-contacts (6) laterally separated by regions in the form of additional layers (7, 7″) of semiconductor material on top of a drift layer (3). Said additional layers being doped according to a conductivity type being opposite to the one of the drift layer. At least one (7″) of the additional layers has a substantially larger lateral extension and thereby larger area of the interface to the drift layer than adjacent such layers (7) for facilitating the building-up of a sufficient voltage between that layer and the drift layer for injecting minority charge carriers into the drift layer upon surge for surge protection.
Owner:CREE SWEDEN

Compact antenna not easily broken by external force, stable in communication performance and excelling in durability

InactiveUS20020122011A1Improve communication performanceDeterioration in communication performance due to coil deformation can also be preventedLoop antennas with ferromagnetic coreLogperiodic antennasEngineeringElectrical and Electronics engineering
A compact antenna is configured of a plurality of planar unit cores, belt-shaped linking members permitting bending or elastic deformation arranged on one side of the plurality of unit cores and linking the unit cores, a coil wound around a linked assembly consisting of the plurality of unit cores and the linking members, and a covering for covering around the linked assembly and the coil. A manufacturing method comprises a step of winding the coil, a step of linking the plurality of unit cores by the linking members, and a step of inserting the plurality of unit cores linked by the linking members into a hollow in the wound coil.
Owner:ALPS ALPINE CO LTD

Large-scale energy-efficient high-efficiency cone crusher

The invention relates to a large-scale energy-efficient high-efficiency cone crusher, which comprises a rack, an upper lining plate, a lower lining plate, an electromotor, a transmission device, a crushing cone mechanism and a crushing cavity control mechanism, and is characterized in that the crushing cavity control mechanism consists of a feed hopper, a supporting sleeve, an adjusting sleeve, an outer gear ring, a push cylinder, a locking ring, 16 locking cylinders, 8 hydraulic cylinders and 4 jacks, wherein the supporting sleeve is movably connected to the rack, the adjusting sleeve is in threaded connection into the locking ring and the supporting sleeve, the 16 locking cylinders are all arranged on the supporting sleeve, the feed hopper is fixedly arranged on the adjusting sleeve, the outer gear ring is fixedly arranged on the feed hopper, and the push cylinder and the outer gear ring are matched; lifting ends of the 4 jacks are all supported against the bottom surface of a flange ring of the supporting sleeve; the crushing cone mechanism consists of an eccentric sleeve, a cone gear, an eccentric shaft, a crushing cone, a bowl-shaped bearing and a bowl-shaped bearing sealing ring. According to the large-scale energy-efficient high-efficiency cone crusher, the size of a crushing cavity and the size of a throat can be adjusted, and the cavity cleaning operation is convenient.
Owner:海盐机械厂 +1

Traditional Chinese medicine fermented preparation for preventing and treating piglet diarrhea and preparation method thereof

The invention discloses a traditional Chinese medicine fermented preparation for preventing and treating piglet diarrhea and a preparation method thereof. The traditional Chinese medicine fermented preparation for preventing and treating piglet diarrhea comprises the following components in parts by weight: 10 parts of andrographis paniculata, 8 parts of punica granatum peels, 8 parts of breynia fruticosa, 8 parts of portulaca oleracea, 6 parts of sophora flavescens, 10 parts of anemone chinensis, and 10 parts of coptidis rhizome. The preparation method of the traditional Chinese medicine fermented preparation for preventing and treating piglet diarrhea comprises the following steps of: pre-treating; preparing strain fermenting liquid; and fermenting the traditional Chinese medicine. The traditional Chinese medicine fermented preparation contains traditional Chinese medicine components capable of improving intestinal environment and metabolic products of multiple probiotics; and the traditional Chinese medicine fermented preparation obviously reduces the occurrence probability of piglet diarrhea, has no toxic or side effects, no pollution, no residual and no drug resistance, and can be widely used for feeding piglets.
Owner:GUANGZHOU HESHENGTANG ANIMAL PHARMA

Type II Cubic Liquid Crystal Composition

A cubic liquid crystal composition comprising at least one amphiphilic compound having the following general formula (1) and having an IV / OV value of 0.65 to 0.95, and water or an aqueous medium:wherein R represents a hydrophilic group; X and Y each independently represent a hydrogen atom or together form an oxygen atom; n is an integer of 0 to 4; and m is an integer of 0 to 3.
Owner:KURARAY CO LTD +2

Drive system and method for operating such a drive system

A drive system for an electric motor includes a connection for a battery, and an inverter having an input side connected to an intermediate circuit and an output side having a connection for an electric motor. The intermediate circuit includes a first thyristor connected in parallel with an intermediate circuit capacitance. The drive system may also include a rectifier having an input side connected at the output side of the inverter in parallel with the electric motor, and a second thyristor connected an output side of the rectifier. The first / second thyristor are configured to be activated by a monitor incorporated in or assigned to the drive system. In the event of a malfunction, the input and / or output side of the inverter can be electrically isolated to allow a multiply redundant armature short circuit.
Owner:ELFA NEW ENERGY VEHICLES EPOWERTRAIN SYST LTD +2

Self-resetting buckling-restrained brace and energy dissipation method thereof

The invention belongs to the technical field of construction energy dissipation structures and relates to a self-resetting buckling-restrained brace which comprises a central positioning plate and second-stage buckling-restrained units located on the left side and the right side. Each second-stage buckling-restrained unit comprises a connecting joint, a supporting core component, an outer sleeve steel pipe, a sliding bearing plate, a fixed bearing plate, a stable steel bar, a steel frame support, a belleville spring and a friction plate. The supporting core component, the sliding bearing plateand the stable steel bar are sequentially connected and slide in the outer sleeve steel pipe. The middle part of the supporting core component penetrates through the outer sleeve steel pipe; the outer end of the supporting core component is fixedly connected with the connecting joint; the fixed bearing plate, the steel frame support and the central positioning plate are sequentially connected, and the inner end of the stable steel bar penetrates through the fixed bearing plate; the friction plate in contact with the stable steel bar is arranged between the fixed bearing plate and the centralpositioning plate; and the compressed belleville spring sleeves outside the stable steel bar. The invention further relates to an energy dissipation method of the self-resetting buckling-restrained brace. The structure is simple, the bearing capacity of a main body structure is increased, and the self-resetting capacity is achieved.
Owner:GUANGZHOU UNIVERSITY

Low-temperature gas explosion characteristic test method

The invention provides a low-temperature gas explosion characteristic test method. The method includes the steps that firstly, gas tightness of a test system is checked; secondly, gas distribution and concentration detection are performed; thirdly, ignition energy is sequentially tested from low energy to high energy till gas in a test tank is ignited and exploded. According to the low-temperature gas explosion characteristic test method, mainly the explosion characteristics of combustible gas, the explosion inhibiting performance of filler and explosion venting reliability of a safe device are tested in any low-temperature state, in other words, in the low-temperature state, if a pressure container (such as a rectifying tower) filled with regular filler and rupture disks explodes, whether the regular filler and the rupture disks can effectively inhibit explosion and vent explosion or not is tested, and a rectifying tower body is protected against damage so that casualties can be avoided.
Owner:CHINA COAL TECH ENG GRP CHONGQING RES INST

Energy feedback shock absorber with damping stiffness changing along with road condition

ActiveCN104405812ARealize cycle power generationSolve the problem of unequal volume changeSpringsMachines/enginesVehicle frameEngineering
The invention discloses an energy feedback shock absorber with damping stiffness changing along with a road condition. The energy feedback shock absorber adopts a combined piston structure, through the combination of a first bent circuit throttle oil way and a second bent circuit throttle oil way, oil liquid in the upper cavity of a cylinder barrel is connected with a hydraulic system through the first bent circuit throttle oil way and the first oil way of a piston rod, oil liquid in the lower cavity of the cylinder barrel is connected with the hydraulic system through the second bent circuit throttle oil way and the second oil way of the piston rod, pressure oil flow circulation generation is realized, and the vibration energy of the shock absorber is converted into storable electric energy; a gas bag arranged at the bottom of the cylinder barrel is communicated with an oil-gas separation pressure balance type energy accumulator gas cavity, the volume of the gas bag is increased or decreased through the elastic deformation of the gas bag, and the problem that the changes for the volumes of the upper cavity and the lower cavity of the cylinder barrel are unequal when the piston slides is effectively solved; a control device appropriately delays the opening time of a related electromagnetic check valve according to pressure jump feedback obtained by a first pressure sensor and a second pressure sensor, and the adaptive control that the damping stiffness of the shock absorber changes along with the road condition is realized, so that the frequency and amplitude of vibration between a frame and an axle is reduced, and the frame can be effectively protected from being damaged.
Owner:INNER MONGOLIA NORTH HAULER

Packaging for unitary dosage items

The present invention provides an alternative solution to packaging for a plurality of unitary dosage items that is convenient for a user to carry with them. Preferably, the easily portable package contains a number of unitary dosage items that will remind a user of which dosages have been administered. The present invention is particularly useful for unitary dosages of items whose stability or shelf life may be enhanced by decrease of exposure to degradative influences, such as light, oxygen or physical destruction.
Owner:NOTTOLI MARK A +1

Polypropylene mesh/electro-spinning nano-fiber membrane as well as preparation method and application thereof

The invention relates to a polypropylene mesh / electro-spinning nano-fiber membrane as well as a preparation method and an application thereof. The polypropylene mesh / electro-spinning nano-fiber membrane is prepared through the following steps: (1) preparing a chitosan-polyethylene glycol hydrogel; (2) preparing basic fibroblast growth factor (bFGF) embedded polylactic acid-poly lactic-co-glycolic acid (PLGA) microspheres; (3) preparing an electro-spinning solution; (4) preparing the polypropylene mesh / electro-spinning nano-fiber membrane by use of an electro-spinning method. According to the polypropylene mesh / electro-spinning nano-fiber membrane, the polypropylene mesh and the nano-fiber membrane are compounded creatively, and therefore, the biocompatibility of the polypropylene mesh is improved by use of the nano-fiber membrane and the tensile strength of the nano-fiber membrane is improved by use of the polypropylene mesh, and the polypropylene mesh and the nano-fiber membrane supplement each other; in addition, the microspheres are introduced to realize controlled drug release; as a result, lots of defects of the clinical existing polypropylene meshes can be overcome.
Owner:NANJING GENERAL HOSPITAL NANJING MILLITARY COMMAND P L A
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