787results about How to "Stop the leak" patented technology

A split nut has two halves securely fastened to one another by magnets. The magnets may be attached to the nut or the nut itself can be magnetized. The magnets secure the two halves together so that the threads of each half are in alignment and the nut may be moved along a threaded shaft. The nut may be attached to a threaded shaft anywhere along the length of the shaft. The nut has the ability to realign or reform a damaged portion of the threaded shaft. The nut can also be used for tightening, in the manner of a conventional nut. Moreover, the nut can be used for extracting by pushing, as for example in removing steering wheels for a steering column. Also, if provided with a gasket, the nut can stop leaks.

A method of promoting the healing of a lesion in a smooth muscle, comprising selecting a smooth muscle portion having a lesion and applying a non-excitatory electrical field to the portion, which field reduces the mechanical activity of the portion.

The invention discloses a federated modeling method, device and equipment based on a block chain, and a storage medium. The method comprises the following steps: a training initiator issues configuration information to all training clients based on client information corresponding to the training clients when the number of the training clients is monitored to reach a preset number; the training initiator uploads a to-be-trained model to a main chain; and the training initiator determines a target model based on aggregation gradient and the to-be-trained model. Modeling of federated learning isrealized through the block chain; on the premise of protecting the privacy of federated learning data, the accuracy of federated learning is not affected, the training effect and model precision of federated learning are improved, model parameters such as gradients in transmission do not need to be modified, and the balance between privacy protection of the model parameters such as gradients andmodel convergence or model precision is achieved; and information leakage can be completely prevented, so the safety of data samples in federated learning is improved.

This invention discloses a network safety management system and method, which comprises system supportive platform, strategy management center, strategy executive points and log server. It is first to set protection aim and spreads the strategy to the aim device and system strategy executive through system supportive platform. The strategy executive points executes the strategy and acknowledges the log server with results.

A cartridge unit 10 for an inkjet printer, with an ink storage compartment 46 and an ink feed system 30 for connection to a printhead 22. The ink storage compartment has a displaceable wall section 48 so that its variable storage volume 46 is variable. The displaceable wall 48 is biased 54 toward expanding the variable storage volume 46 so that there is a negative pressure in the ink storage volume 46, such that ink does not inadvertently leak from the ink ejection nozzles. Without negative pressure, an ink meniscus can bulge from the nozzles. The meniscus will ‘pin’ itself to the edge of the nozzle aperture and may be strong enough to stop ink leakage. However, paper dust or other contaminants will eventually stop the bulging meniscus from pinning itself on the nozzle rim and leakage occurs. A negative pressure in the ink storage volume makes the meniscus invert back into the nozzle aperture. As the meniscus does not bulge out of the nozzle, paper dust on the nozzle surface does not break the surface tension to cause leakage.

The invention relates to a method and a device for protecting data on the basis of AEC real-time encryption. The method comprises the following steps: generating an initial key by a true random number generator in a system, storing the generated initial key into a nonvolatile memory, and then generating each-round expandable sub-keys by the initial key in the nonvolatile memory. The invention has the following advantages: in the whole process, only commands for starting the true random number generator is controlled by a processor, the other procedures are realized by a hardware circuit, the processor and software are prohibited from participation, and bus transaction is not involved, thereby ensuring the safety of the key and preventing the key from being revealed; a sub-key expansion RAM is lead in by adopting AES crypto-algorithm encryption, an address automatically adds 1 or subtracts 1 according to each-round encryption/decryption operation, thereby solving the system speed bottleneck problem caused by too long elapsed time for expanding the key in the AES algorithm realized by the traditional method; and a buffer is added between the processor and the channel of the AES algorithm, thus improving the encrypting/decrypting speed, and realizing programme operating on an encrypted memorizer in real time.

An improved turbine spring clip seal for directing gases to be mixed with fuel in a combustor basket. The turbine clip seal may include an inner housing and an outer housing. The inner housing or the outer housing, or both, may include one or more tapered leaves forming a portion of the spring clip seal. At least one leaf may include a flared end for limiting gas from passing through the slots in the spring clip seal. In at least one embodiment, the turbine clip seal may include a center sealing member positioned between the inner and outer housings.

A pagewidth inkjet printhead is provided. The printhead comprises (a) a plurality of nozzles formed on a frontside of a substrate, each nozzle having a respective nozzle inlet; and (b) a plurality of ink supply channels. Each ink supply channel is configured for supplying ink from a backside of the substrate to a corresponding group of nozzle inlets. Further, each ink supply channel has an aspect ratio of less than 4:1, the aspect ratio being defined by the ratio of the channel depth to the channel width. A low aspect ratio allows facile backside etching of the ink supply channels.

The invention discloses a dynamic and static pressure mixing lubricating end face sealing structure which comprises a dual-end-face sealing structure, a single end face sealing structure and a seriesconnection sealing structure. The dual-end-face sealing structure feeds buffering gas to carry out zero leakage sealing on toxic and dangerous technological gas and comprises a static ring and a movable ring; the static ring has the axial degree of freedom and is provided with a lubricating gas passage, a lubricating gas pressure stabilization cavity, a porous medium friction pair and a high-precision displacement sensor and other structure; and the movable ring rotates along with a rotary shaft. Lubricating gas with adjustable pressure is fed to generate controllable gas static pressure; oneor more annular cavities penetrating through the circumferential direction are formed in the radial direction of the lubricating gas pressure stabilization cavity; the end face of the movable ring canbe a smooth end face, or a dynamic pressure groove structure is processed on the end face of the movable ring; and the groove type of the dynamic pressure groove has multiple manners including a traditional spiral groove, T-shaped groove or a novel rhombus groove structure. Under the extreme conditions including high temperature, high pressure, high rotating speed, ultralow temperature and the like, frequent start and halt and sealing of the mechanical shaft end of an impeller operating under variable working conditions can be realized.

A plasma confinement device used to plasma treatment device is arranged between the treatment zone and the exhaust zone thereof. The plasma confinement device includes an electric element, the electric element is provided with a plurality of channels which are used for controlling the output of used reaction gas and byproduct gas, and electric counteracting electrification particles which pass through the channels, the plasma discharge is basically confined in the treatment zone. The treatment device also includes electric earthing elements are arranged under the electric elements and are insulated from the electric elements. The plasma confinement device of the invention reduces the unhoped plasma which is formed out of the plasma treatment zone thereof, the pollution of the plasma treatment device cavity is solved.

A printhead integrated circuit is provided. The printhead integrated circuit comprises: (a) a plurality of nozzles formed on a frontside of a substrate, the nozzles being arranged in rows extending longitudinally along the substrate, each nozzle having a respective nozzle inlet; and (b) a plurality of ink supply channels extending longitudinally along a backside of the substrate. Each ink supply channel is configured for supplying ink from the backside to at least one corresponding row of nozzle inlets. Further, each ink supply channel is interrupted along its length by one or more transverse bridges. The transverse bridges provide the printhead integrated circuit with strength in a transverse direction.

The invention discloses an articulated tractor-trailer tank car with scalable outrigger which can be used in steel mill. Its back outrigger is adjustable on level, hydraulic system has high safety and it has flexible turning. It contains tractor, semi-trailer, saddle and tank structure. The semi-trailer links the back of the tractor by the saddle. The tank structure locates on the semi-trailer. The semi-trailer has front and back outriggers on both sides of its front and levelly scalable back ends separately. The back outrigger contains edge beam, box beam, level cylinder and outrigger. The edge beam fixes on both sides of the back of the semi-trailer. One end of the box beam covers in the edge beam and its other end links the outrigger. Two ends of cylinder link box beam and edge beam separately.

The invention provides a preparation method of a flexible composite phase change material, and belongs to the field of phase change heat storage materials. The method utilizes ice crystals formed by water in the freeze-drying process as a template to prepare a loose and porous carbon nanotube-based aerogel carrier with a porous three-dimensional network structure, obtains a flexible structure, thestrong hydrogen bonding function between polyvinyl alcohol, chitosan and a phase change core material can load more the phase change core material, the increase of the load of the phase change core material increases the storage density of the material, the match of pores of the phase change core material and the carbon nanotube-based material maintains the flexibility of the material, and the thermal conductivity of the material is better by utilizing the high thermal conductivity of a carbon nanotube.

The invention discloses a system and a method for on-line separation and recovery of electronic documents, and aims to realize automatic separation storage and recovery of electronic documents during the editing and using processes without any influence on thespecific document editing system. The method comprises the steps of binding a part storage area of a management terminal and a part storage area of a special key board (customized by the system) to form a logic storage space, namely, ''separation storage area''; when preserving the file in the separation storage area, effectively separating and storing information to two different mediums, namely, the management terminal and the special key board; when reading the file in the separation storage area, acquiring recovered original document by document fragment information on two mediums. Compared with the traditional encryption management, the method is more safe, convenient and reliable, so that the method can provide a safety management tool with super strength for terminal-level electronic documents.

The invention belongs to the technical field of agricultural cultivation and discloses a full-seedling and strong-plant cultivation method for corn. The cultivation method comprises steps as follows: seed selection and coating, furrowing and bedding, returning of straw to field, layered fertilization, precision sowing, chemical weeding and film mulching, final singling at suitable time and field management. According to the method, furrows are dug between corn sowing rows in a un-fallowing and no-tillage ridged field, bottom layers of dressing furrows are covered with chopped straw, the straw can prevent upper-layer fertilizer from leaking down, the decomposed straw becomes fertilizer and can be absorbed and used by corn roots, isolation is performed with loam for layered fertilization, and one-time fertilization can be used by the corn in the whole growth period; holes are dug in rows in a sowing region, two healthy, full and vigorous corn seeds are sown in each hole for final singling at suitable time; the fertilization region is covered with a mulch after chemical weeding, and the temperature under the mulch is higher than the subsurface temperature of the corn sowing region, so that fertilizer and water under the mulch slowly permeate soil in the corn sowing region, full-seedling, strong-seedling and strong-strain of the corn are realized, and the basis for increasing the corn yield is consolidated.

A wireless communication system wherein a simple structure is used to maintain, even under a quasi-static fading environment of wireless communication, the transmission quality of a wireless line used between particular radio stations, while reducing the influence of radio wave interference with other radio stations using the same frequency band, and further preventing information from leaking to other radio stations. A transmitter station (101) selects, based on quality information of a transmission path (104), an optimum one of a plurality of antennas to transmit a packet from the selected antenna to a receiver station (102). The receiver station (102) uses an antenna, selected from among a plurality of antennas, to receive the packet from the transmitter station (101), and switches from the currently selected antenna to another one. Then, the receiver station (102) transmits, from the other antenna, a response packet, which is responsive to the received packet, to the transmitter station (101). The transmitter station (101) uses the plurality of antennas to receive the response packet, and selects, as a packet transmission antenna, an antenna, which exhibits the best reception quality, to transmit a packet from the selected antenna to the receiver station (102). This process is repeated hereafter.

The intelligent gas spring includes a casing, an inner cylinder with cylinder cap and piston to separate the space inside the casing into main gas chamber and subsidiary gas chamber communicated through an on-off gas channel, and a stroke valve installed on the inner cylinder cap to suit with the damping cylinder on the piston. The gas channel may be opened or closed accurately and timely based on the varying road condition so as to regulate the rigidity of the gas spring intelligently to suit for different road condition. The present invention has excellent shock absorbing performance to make the automobile possess high riding comfort and excellent operation stability, and may be installed widely in various kinds of automobile.

This application discloses a GaN-based III-V compound semiconductor LED (light emitting diode) epitaxial wafer and a production method thereof. The GaN-based III-V compound semiconductor LED epitaxial wafer structurally comprises a substrate, a low temperature GaN buffer layer, a first high temperature non-doped GaN layer and a second high temperature non-doped GaN layer, wherein an AlGaN/GaN superlattice layer is formed on the second high temperature non-doped GaN layer, a high temperature N type GaN layer is formed on the AlGaN/GaN superlattice layer, a stress release layer, an MQW protection layer, a P type electron barrier layer and a high temperature P type GaN layer are formed on the high temperature N type GaN layer, a contact layer is formed on the high temperature P type GaN layer, SiN mask/N type GaN layers are periodically inserted into the high temperature N type GaN layer, and the number of periods of the SiN mask/N type GaN layers ranges from 5 to 20. The GaN-based III-V compound semiconductor LED epitaxial wafer has the advantages of signally improving antistatic ability, effectively enhancing recombination efficiency of current carriers, and improving internal quantum efficiency of an LED.

The invention discloses an immersion control device used for a photoetching machine; a circular flow field cushion chamber, a sealing structure and a drying cavity are arranged from an injection cavity and a recovery cavity outwards in sequence; the flow field cushion chamber can carry out compensation to an exposure flow field in real time so as to reduce the occurrence probability and intensity of liquid backflow; the sealing structure adopts a combination mode of surface characteristic processing of hydrophilic and hydrophobic and the structure design of a tension groove; the section of the tension groove is a triangle inclined outwards in the direction vertical to a substrate; liquid which is drawn to move by the substrate forms backflow so as to restrain the liquid leakage; the drying cavity is filled with matters with super absorbent and communicated with negative pressure, and discharges possible residue of droplets in real time; simultaneously, the mode of conveying the liquid adopts positive pressure to feed the liquid and free flowing of recovery side, thus avoiding fluctuation of flow field caused by the incoordination of liquid injection and recovery pressure.

Disclosed are an optical film set and a backlight module employing same. The optical film set comprises a first optical film with at least one first protrusion portion, a second optical film arranged at one side of the optical film and having a second protrusion portion correspondingly arranged on the upper or lower surfaces of the first protrusion portion, a light shielding portion which extends out from the second protrusion portion and is overturned to wrap up the side of the first protrusion portion of the first optical film. The backlight module comprises a frame with at least one groove, a plurality of optical films installed on the frame, each of which has a protrusion corresponding to the groove of the frame, and a light shielding portion integrally extending out from the protrusion portion of any one optical film to be overturned and wrap up sides of the protrusion portion of other optical films.

In a neutron moderator, a neutron irradiation method, and a hazardous substance detection apparatus, an inspection chamber (21) where an inspection target (A) can be inserted and removed is provided. Around this inspection chamber (21), a thermal neutron absorbing material (15) is provided. A neutron generator(11) is arranged facing the inspection target (A) in the inspection chamber (21), and a neutron moderating material (12) is arranged at an opposing side of the inspection target (A) with respect to the neutron generator (11). The external surface of the neutron moderating material (12) is covered with gamma ray shielding materials (13, 14), and a Ge detector (24) and a BGO detector (25) are provided to detect gamma ray emitted from the inspection target (A). With this configuration, necessary fast neutron and thermal neutron can be taken out, while suppressing generated secondary gamma ray. Accordingly, a hazardous substance can be detected accurately regardless of a constituent element thereof.