1283results about How to "Small weight" patented technology

This invention relates to processes for the assembly of three-dimensional structures having periodicities on the scale of optical wavelengths, and at both smaller and larger dimensions, as well as compositions and applications therefore. Invention embodiments involve the self assembly of three-dimensionally periodic arrays of spherical particles, the processing of these arrays so that both infiltration and extraction processes can occur, one or more infiltration steps for these periodic arrays, and, in some instances, extraction steps. The product articles are three-dimensionally periodic on a scale where conventional processing methods cannot be used. Articles and materials made by these processes are useful as thermoelectrics and thermionics, electrochromic display elements, low dielectric constant electronic substrate materials, electron emitters (particularly for displays), piezoelectric sensors and actuators, electrostrictive actuators, piezochromic rubbers, gas storage materials, chromatographic separation materials, catalyst support materials, photonic bandgap materials for optical circuitry, and opalescent colorants for the ultraviolet, visible, and infrared regions.

The present invention provides a projection display comprising an illumination system comprising at least one laser source unit and configured and operable for producing one or more light beams; a spatial light modulating (SLM) system accommodated at output of the illumination system and comprising one or more SLM units for modulating light incident thereon in accordance with image data; and a light projection optics for imaging modulated light onto a projection surface. The illumination system comprises at least one beam shaping unit comprising a Dual Micro-lens Array (DMLA) arrangement formed by front and rear micro-lens arrays (MLA) located in front and rear parallel planes spaced-apart along an optical path of light propagating towards the SLM unit, the DMLA arrangement being configured such that each lenslet of the DMLA directs light incident thereon onto the entire active surface of the SLM unit, each lenslet having a geometrical aspect ratio corresponding to an aspect ratio of said active surface of the SLM unit.

A two-stage power converter that dynamically adjusts to output current requirements includes a first stage regulator that provides power to a second stage regulator. The first stage can be a buck converter, and the second stage can be a multiple-phase buck converter. The output voltage of the first stage (intermediate bus voltage Vbus) is varied according to the load current to optimize conversion efficiency. To provide maximum efficiency, the Vbus voltage is increased as load current increases. The Vbus voltage provided by the first stage can be varied by duty cycle or operating frequency control. In another embodiment, the switching frequency of the second stage is varied as output current changes so that output current ripple is held constant. In an embodiment employing a multiple-phase buck converter in the second stage, the number of operating phases are varied as output current changes.

An improved, conductive, polymeric composition comprises a polymeric resin; an electrically conductive filler system comprising small carbon fibers and either carbon powder or fibrous non-conductive filler or a combination of both. The amount of the conductive filler system utilized is dependent upon the desired electrical conductivity (surface and volume conductivity or resistivity) while preferably preserving intrinsic properties of the polymeric resin such as impact, flex modulus, class A finish, and the like. The conductive articles made from these compositions can therefore be used for electromagnetic shielding, electrostatic dissipation or antistatic purposes in packaging, electronic components, housings for electronic components and automotive housings.

Compounds of formula I which act as amylin agonists with respect to certain desired amylin activities and as calcitonin agonists with respect to certain desired calcitonin activities are provided. Such compounds are useful in treating disturbances in fuel metabolism in mammals, including, but not limited to diabetes mellitus, including Type I diabetes and Type II diabetes. The present invention also relates to methods of treating Type I diabetes, treating Type II diabetes and to methods of beneficially regulating gastrointestinal motility comprising administration of a therapeutically effective among of one of the compounds. Also provided are pharmaceutical composition comprising a compound of formula I and a pharmaceutically acceptable carrier.

A two-stage power converter that dynamically adjusts to output current requirements includes a first stage regulator that provides power to a second stage regulator. The first stage can be a buck converter, and the second stage can be a multiple-phase buck converter. The output voltage of the first stage (intermediate bus voltage Vbus) is varied according to the load current to optimize conversion efficiency. To provide maximum efficiency, the Vbus voltage is increased as load current increases. The Vbus voltage provided by the first stage can be varied by duty cycle or operating frequency control. In another embodiment, the switching frequency of the second stage is varied as output current changes so that output current ripple is held constant. In an embodiment employing a multiple-phase buck converter in the second stage, the number of operating phases are varied as output current changes.

Various ultra-miniature, monolithic inertial switching (G-switch) devices used in safety and arming (S&A) devices for projected munitions, which operate in accordance with a shuttle member (50), which effectuates current switching of around an ampere of current when subjected to a threshold inertial loading (for example, an impact or gun launch of a projection munition). The embodiments of the invention can be a passive threshold G-switch with or without switch enable and arming capability. The embodiments (100, 200) of the invention use either mechanical or electromechanical switch enable functioning and can optionally include a shuttle time-delay feature (54). Both embodiments can incorporate various designs for a switching assembly (75) such as latching single-throw switch having the configurations of either a normally-open, double pole, single-throw switch or a normally-open, single pole, single-throw switch, wherein switch closing occurs when the shuttle member (50) experiences inertial loading and penetrates the switching assembly (75).

Improved regulation and transient response are provided by a power supply architecture providing both unregulated and regulated voltage converters in parallel but deriving input power from separate power supplies connected in series wherein regulated and unregulated branches each provide a substantially fixed and constant proportion of the output current. The series connection of input power sources may provide a further feedback mechanism in addition to feedback for regulation which enhances overall performance. As a perfecting feature of the invention, inductor-less resonant converters which are switched in an interleaved fashion may be used in the unregulated branch while substantially cancelling the characteristic large output voltage ripple thereof.

A power generation and / or storage device utilizes human motion inputs or other power sources (i.e. hydraulics, pneumatics or explosive gases) to create mechanical kinetic energy that is stored (preferably in springs) and later released on demand to rotate a generator to produce electricity.

The invention relates to an unmanned aerial vehicle-mounted laser radar system, which consists of an unmanned aerial vehicle flying platform subsystem, a laser radar subsystem and ground protection and communication subsystems, wherein the unmanned aerial vehicle flying platform subsystem takes an unmanned helicopter as a carrying platform, the laser radar subsystem is used for acquiring three-dimensional spatial information and digital image data and consists of a laser scanner, an IMU (Inertial Measurement Unit), and a high-resolution aerially-photographing digital camera, and the ground protection and communication subsystems are used for protecting flying safety and timely returning working state information of the system. With the adoption of the unmanned aerial vehicle-mounted laser radar system, the patrol efficiency can be increased, the patrolling means is scientific, intuitive and accurate, the potential problems can be timely discovered so as to ensure safe operation and reduce economic losses, and thus, the unmanned aerial vehicle-mounted laser radar system has the characteristics of low cost, simplicity for operating, high accuracy of data and the like.

A universal low cost radio frequency identification (RFID) tag for use with data storage discs includes an RFID chip, e.g., 2.45 GHz mu-RFID chip, coupled to a linear dipole antenna. The antenna length is reduced in length from the expected length for an optimally tuned antenna corresponding to the operating radio frequency of the RFID chip in a free space environment. The antenna is placed in the tag such as to substantially overlap disc hub area and not extend into data area. The combination of the shortened linear dipole antenna and metallization on the disc to which the tag is applied effectively form a complex antenna operational in the RFID chip's frequency range. The RFID tag works on CDs and DVDs with and without substantially metallized hub areas. The RFID tag is less 0.3 mm thick and may include: ring shape, adhesive material, spacing material achieving uniform thickness, a counterbalance provision.

An electrical energy storage device for storing electrical energy and supplying the electrical energy to a driving motor at different power levels is disclosed. The electrical storage device has an energy battery connected to a power battery. The energy battery has a higher energy density than the power battery. However, the power battery can provide electrical power to the electrical motor at different power rates, thereby ensuring that the motor has sufficient power and current when needed. The power battery can be recharged by the energy storage battery. In this way, the power battery temporarily stores electrical energy received from the energy battery and both batteries can provide electrical energy at the different power rates as required by the motor. The energy storage device can be releasably connected to an external power source in order to recharge both batteries. Both batteries can be recharged independently to optimize the recharging and lifetime characteristics of the batteries.

A process for chemically bonding an odor-encapsulating agent to textiles includes reacting a cyclodextrin with a cross-linking agent capable of forming ether bonds with the cyclodextrin and with the textile material, and curing the textile material treated with a mixture of the cyclodextrin and cross-linking agent. Preferably, the cross-linking agent is imidazolidone, which forms an ether bond with a hydroxyl group on the cyclodextrin and with a hydroxyl group. In textile materials containing cellulose, imidazolidone forms an ether bond with a hydroxyl group on the cellulose. An active agent can be complexed with the cyclodextrin for release. Textiles formed by such a process can comprise an article of clothing adapted to trap odors emanating from a wearer.

A display device is provided. The display device includes: a display panel provided with a plurality of display electrodes, where the display electrodes are configured for displaying images, display electrodes located within a predetermined region of the display panel are defined as first electrodes, the first electrodes are configured for fingerprint sensing, and a stage during which the first electrodes perform the fingerprint sensing is defined as a fingerprint sensing stage; and a driving circuit configured to, provide display signals to the display electrodes to display the images, and provide a fingerprint sensing signal to the first electrodes during the fingerprint sensing stage and perform a self-capacitance detection on the first electrodes, to implement the fingerprint sensing. A driving circuit, a method for driving the display device, a liquid crystal display device and an electronic apparatus including the display device are provided.

A device and system for cryogenically treating tissue having an external cryoneedle including an outer housing having a proximal end, a proximal portion, a distal portion and a distal end. The proximal portion of the outer housing is coated with a first material and the distal portion of the outer housing is coated with a second material. The distal end is sealed with a third material. The first material has different temperature conductive properties than the second and third materials. An internal cryoneedle having a first and second end is axially disposed within the external cryoneedle. The first end of the internal cryoneedle is in communication with the sealed distal end of the external cryoneedle and the second end of the internal cryoneedle being in fluid communication with a cryogen source.

A doorstop that includes a retainer piece disposed on one of a door and a door support, the retainer piece including a plastic housing with a main opening and a guide opening arranged perpendicular to the main opening and parallel to a pivot axis of the door. The doorstop also includes a door retaining rod articulated on the other of the door and the door support. The door retaining rod passes through the main opening of the retainer piece housing and includes a brake ramp and a catch depression on a side of the door retaining rod. The doorstop also includes a catch device configured to determine specific door opening positions. The catch device includes a brake body and a spring. The catch device connects the retainer piece and the door retaining rod to each other in a moveable manner. The brake body includes a hollow cylinder having a semi-spherical closed end and an open end and is slidingly disposed in the guide opening of the retainer piece. The open end accommodates the spring so that the closed end is pre-tensioned by the spring relative to the brake ramp and catch depression and is guided in the guide opening free of tilt.

A gas turbine engine includes a variable area nozzle having a plurality of flaps. The flaps are actuated by a plurality of actuating mechanisms driven by shape memory alloy (SMA) actuators to vary fan exist nozzle area. The SMA actuator has a deformed shape in its martensitic state and a parent shape in its austenitic state. The SMA actuator is heated to transform from martensitic state to austenitic state generating a force output to actuate the flaps. The variable area nozzle also includes a plurality of return mechanisms deforming the SMA actuator when the SMA actuator is in its martensitic state.

The design of the low cost GPS / IMU positioning and data integrating method, which employs integrated global positioning system / inertial measurement unit enhanced with dual antenna GPS carrier phase measurements to initialize and stabilize the azimuth of the low cost GPS / IMU integrated system, is performed. The utilization of the raw carrier phase measurement for the integration speeds up the ambiguity search.

The invention belongs to the technical field of electrostatic spinning and relates to a portable handheld electrostatic spinning device. The top of a pushing rod of a medical syringe is provided with a pressure welding switch, a metal foil is arranged on the top side fixedly, a spinning solution is arranged in a front end inner cavity of the medical syringe, a square battery and a high-voltage direct-current inverter are arranged fixedly on the side wall of the syringe in a butt joint mode, and a stainless steel needle head which is used for spinning is arranged at the bottom end of the syringe in an inserting mode. A conventional medical syringe needle head structure and the syringe are combined and matched, the spinning solution is stored in the inner cavity of the medical syringe which is provided with the stainless steel needle head, the square battery provides a power supply for the high-voltage direct-current inverter, when the direct current voltage is inverted, the voltage in the unit of kilovolt, the positive pole of the high-voltage direct-current inverter is communicated electrically with the stainless steel needle head, and the negative pole of the high-voltage direct-current inverter is communicated electrically with the metal foils. The device is simple in overall structure, is convenient to carry, use and operate, applicable to occasions such as outdoor teaching and wounded rescue and high in economical value.

Improved regulation and transient response are provided by a power supply architecture providing both unregulated and regulated voltage converters in parallel but deriving input power from separate power supplies connected in series wherein regulated and unregulated branches each provide a substantially fixed and constant proportion of the output current. The series connection of input power sources may provide a further feedback mechanism in addition to feedback for regulation which enhances overall performance. As a perfecting feature of the invention, inductor-less resonant converters which are switched in an interleaved fashion may be used in the unregulated branch while substantially cancelling the characteristic large output voltage ripple thereof.

This invention provides a method for forming multi-layered coating film excelling in appearance, corrosion resistance and chipping resistance, which comprises applying a first coloring paint (B), second coloring paint (C) and clear paint (D) onto cured coating film of a specific electrodeposition paint (A) of low weight loss under heating, wet-on-wet by the order stated; and heat-curing the three-layered coating film simultaneously.

The invention relates to a large-flow aerosol sampling device, which is characterized in that the aerosol sampling device mainly comprises a macroparticle cutter, a concentrating separator and a sampler. The macroparticle cutter comprises an inner tube, an outer tube, a top cap, an insect preventing net cover and an air flow output pipe, wherein a circle of air flow inlets are arranged between the outer tube and the top cap; an air flow spray nozzle is formed between the inner tube and the outer tube; the air flow output pipe is arranged in the insect preventing net cover and fixed on the tapered bottom surface of the outer tube. The aerosol concentrating separator comprises an outer shell, and an upper spray nozzle and a lower spray nozzle which are respectively arranged, wherein a ventilation clearance is reserved between the upper spray nozzle and the lower spray nozzle, so as to form a preliminary spray nozzle separated by small particles; ventilation clearances are reserved among the lower spray nozzle and the air flow inlets, so as to form a secondary spray nozzle. The aerosol sampling device has the advantages of simple structure and small volume, and can be used for the concentration, the separation and the real-time monitoring of biological aerosol in the atmosphere.

Alteration of voltage input to a voltage regulator output stage from a Vbus regulator stage in a two-stage voltage regulator provides optimal Vbus voltage placement for a wide range of current loads to increase voltage regulator efficiency and is particularly suited to CPUs having power-saving sleep modes of operation. An optimal voltage is selected or developed in response to information concerning operational mode or current consumption of the powered device. As a perfecting feature of one embodiment of the invention in which a discrete Vbus voltage is selected based on operational mode, the selected voltage is adjusted to further optimize the matching of the Vbus voltage placement to the load and provides a continuous range of voltages. In a second embodiment the entire Vbus positioning function is performed in response to current load information. A feed-forward arrangement is provided to avoid transient spikes as the Vbus voltage placement is altered.

The present invention is to provide a “vehicle windshield wiper for rain and snow dual purpose”, which comprises a bow elastic strip, some clamping devices, a strip scraper receptacle, a sheath cover, a strip scraper, two end ferrule caps and a truss saddle; Wherein, the sheath cover and two end ferrule caps totally envelope the bow elastic strip, clamping devices and strip scraper receptacle so that the snow and icy particles are blocked and separated out unable to intrude or gather in any space thereof; Thereby, the dual function of rain wiper and snow wiper of present invention eliminates the boring action in swapping between rain wiper and snow wiper during interim of snow and non-snow seasons so that it not only saves the extra expense in buying snow wiper for the consuming vehicle drivers but also totally obsoletes the conventional arm-supported snow wiper so as to eliminate the pollution burden incurred by the mass waste conventional snow wipers; Thus, it really possesses double effect in economic benefit and environmental protection.

In an AC link type boosting device, DC terminals of two voltage inverters are connected each other in series in additive polarity and plural AC terminals of each of the voltage inverters are connected to a transformer. The two voltage type inverters are AC linked to each other via the transformer. An external voltage applied between the DC terminals of the AC link type booster is divided by the voltage-type inverters.

An electrical energy storage device for storing electrical energy and supplying the electrical energy to a driving motor at different power levels is disclosed. The electrical storage device has an energy battery connected to a power battery. The energy battery has a higher energy density than the power battery. However, the power battery can provide electrical power to the electrical motor at different power rates, thereby ensuring that the motor has sufficient power and current when needed. The power battery is continuously recharged by the energy storage battery. In this way, the power battery temporarily stores electrical energy received from the energy battery and provides the electrical energy at the different power rates as required by the motor. The energy storage device can be releasably connected to an external power source in order to recharge both batteries. Both batteries can be recharged independently to optimize the recharging and lifetime characteristics of the batteries.

[Object] To provide a portable folding bicycle which allows the user to carry the bicycle with ease in a train, bus, or the like, without any trouble. [Solving Means] A handle support 1 and a wheel support frame 2 are engaged with each other through a folding mechanism 3 which allows the user to turn the handle support 1 and the wheel support frame 2 around the turning axis extending along the lateral direction. Furthermore, the wheel support frame 2 includes a connection mechanism 4 which can be turned on a turning axis extending the longitudinal direction, thereby allowing connection of a rear wheel to the wheel support frame 2 while allowing switching between the turnable state, which allows the user to turn the rear wheel with the wheel support frame 2 as a turning axis, and the fixed state.

An improved, conductive, polymeric composition comprises a polymeric resin; an electrically conductive filler system comprising small carbon fibers and either carbon powder or fibrous non-conductive filler or a combination of both. The amount of the conductive filler system utilized is dependent upon the desired electrical conductivity (surface and volume conductivity or resistivity) while preferably preserving intrinsic properties of the polymeric resin such as impact, flex modulus, class A finish, and the like. The conductive articles made from these compositions can therefore be used for electromagnetic shielding, electrostatic dissipation or antistatic purposes in packaging, electronic components, housings for electronic components and automotive housings.

The invention discloses a robot for cleaning the inner wall of a barrel, which comprises a cleaning module and a driving module which realize relative telescopic movement through a thread transmission mechanism. The cleaning module comprises a front outer shell, a sliding plate, a front stepping motor, a front combined driving mechanism and a cleaning brush, wherein the cleaning brush is arrangedon an output shaft of the front combined driving mechanism; the front combined driving mechanism is connected with the sliding plate, in which central inner threads are processed, by the front outer shell; and the front stepping motor is arranged in the front outer shell and is used for driving the front combined driving mechanism. A back combined driving mechanism in the driving module is connected with a motor fixing plate by a back outer shell; a back stepping motor and a mobile stepping motor are arranged in the back outer shell; the back stepping motor is fixed on the back combined driving mechanism and drives the back combined driving mechanism to move; the mobile stepping motor is fixed on the motor fixing plate; an output screw shaft is fit with the central inner threads of the sliding plate in the cleaning module. The robot has simple structure, small volume, light weight and convenient installation.