679results about How to "Shorten the length" patented technology

An apparatus includes first and second fixation members, a flexible member coupled to the first and second fixation members, and a limiting element coupled to the flexible member. The limiting element is movable relative to the second fixation member and acts to limit loosening of the flexible member relative to the second fixation member. The limiting element can be slidably received by the flexible member. The flexible member can be coupled to the fixation members such that pulling on a free end of the flexible member shortens a length of the flexible member between the fixation members.

The devices and methods described herein relate to jointless construction of complex structures. Such devices have applicability in through-out the body, including clearing of blockages within body lumens, such as the vasculature, by addressing the frictional resistance on the obstruction prior to attempting to translate and/or mobilize the obstruction within the body lumen

The present invention generally relates to methods for drilling a subsea wellbore and landing a casing mandrel in a subsea wellhead. In one aspect, a method of drilling a subsea wellbore with casing is provided. The method includes placing a string of casing with a drill bit at the lower end thereof in a riser system and urging the string of casing axially downward. The method further includes reducing the axial length of the string of casing to land a wellbore component in a subsea wellhead. In this manner, the wellbore is formed and lined with the string of casing in a single run. In another aspect, a method of forming and lining a subsea wellbore is provided. In yet another aspect, a method of landing a casing mandrel in a casing hanger disposed in a subsea wellhead is provided.

A method for providing a graphical user interface (GUI) and a multimedia device using the same, the method including: determining if a user command is input to select a specific section of a GUI item including a plurality of sections; and extending a length of the selected section and reducing lengths of non-selected sections if it is determined that the user command is input to select the specific section of the GUI item. Therefore, the user can manipulate the GUI item more precisely.

The invention discloses a dilution sampling system and a sampling method of fixed source particles and volatile organic compounds, and belongs to the technical field of environmental monitoring. The dilution sampling system comprises a smoke introducing system, a diluting system, a stopping chamber, a sample collection system and a control and data collection system. The system can simulate the nucleation, condensation and coagulation processes of the fixed source smoke after being discharged to the atmosphere, can adopt a grain size classification sampling method of atmospheric particulate matters to sample the particulate matters, can adopt the atmospheric volatile organic matter sampling method to sample the volatile organic matters, and can realize the dynamic control of dilution ratio and the dynamic stopping time. Each part of the system has the advantages of high integration, high stability, automation in control, and easiness in operation.

A system and method for creating user profiles in a television system are described. The system comprises a storage medium having storage locations to store user profiles for a plurality of users; a user interface for creating new user profiles having fields for data entry to be stored in the storage medium; the user interface for creating new user profiles comprising a user option to select and copy data from a stored user profile; and means to select a stored user profile, copy selected data from the stored user profile to corresponding fields in the new user profile, and save the new user profile at a storage location.

Provided is an imaging lens using a wafer scale lens which can easily be produced in a mass production. The entire optical length can be reduced without increasing a lens substrate or a lens formed on the substrate or without using a diffracting plane. The aberration can be preferably corrected. The imaging lens forms a first lens having a positive refractive power and Abbe number v1 on the object side and a second lens having a negative refractive power and Abbe number v2 on the image side of the first lens substrate. The difference between the Abbe number v1 and the Abbe number (v1−v2) is set to be a value greater than 10.

An adjustable annuloplasty ring includes a body in the form of an endless loop having an internal lumen therethrough, an adjustment suture extending through at least a portion of the internal lumen, a first portion of the suture exiting the lumen through a first opening in the body and a second portion of the suture exiting the lumen through a second opening in the body, and a first adjustment marker on the first portion of the suture outside of the body. The suture may be adapted to reduce the length of the body around the loop when tightened.

A device (3000) for processing an encrypted data stream (3001), wherein decryption messages are provided for decrypting each segment (1403) of the encrypted data stream (3001), wherein each decryption message comprises a number of decryption elements, wherein the device (3000) comprises a detection unit (3002) for detecting the number of decryption elements per decryption message, and a determining unit (3003) for determining a position for providing the decryption messages in relation to the sequence of the segments (1403), based on the detected number.

The present folding stock adapter can be used with many types of military-type assault rifles that typically comprise a receiver extension, buffer and action spring. The present folding stock adapter can be used to add a folding capability to a standard stock allowing it to fold against a rifle's receiver when the weapon is not in use, thus reducing the overall length of the weapon. This reduction in length can facilitate its maneuverability, storage and transport in cramped quarters. The present device can also allow for the quick unfolding of the stock in order to allow the weapon to function and be fire normally.

A momentum trap ballistic armor comprises an accelerating layer, a plug layer adjacent to the accelerating layer, and an energy absorbing layer. The plug layer includes an opening and at least one plug maintained within the opening. When a projectile impacts the accelerating layer, the plug is accelerated to the velocity of the projectile before the projectile perforates the plug, forming a projectile-plug combination. The energy absorbing layer is used to capture the projectile-plug combination. The accelerating layer is typically ceramic, the plug layer is typically metal, and the energy absorbing layer is typically ballistic cloth material.

The invention refers to a method for upgrading the transmission performance when the network is jammed. The method divides the big data package into pieces when the low rate loop is jammed, it reduces the length of data package, and turns into piece temporary queue, the data with high transmission priority are turned into the queue with high priority, makes the real-time service data with high priority are transmitted in the branch pieces crossly, avoids the delay and jitter when waiting the big data package, guarantees the service quality pointing to real-time service data, and it reduces the chaos order of branch piece messages extremely, at the same time, it can guarantee the data with high priority such as real-time service data can be dispatched in prior.

The invention discloses an air-breathing pulse detonation engine and a detonation method thereof. An air inlet channel, a mixed evaporator, a detonation chamber and a tailpipe are connected along an air inlet direction in turn, and a leaf valve, a main fuel nozzle and an air discharge cavity are arranged in an air inlet ring cavity along the air inlet direction in turn, wherein the fuel radially injects through the main fuel nozzle; the air discharge cavity and an air discharge tube are communicated through a through hole of a central body bracket to the exterior of an outer wall of the air inlet channel; the leaf valve maintains a forward normally opened state; a detonation tube is arranged in the detonation chamber through a mounting bracket; a drainage tube, an igniter and a heat exchanger are arranged on the detonation tube; a plurality of jet holes are formed on a tail side wall or a tail end face; the igniter is positioned on the front section of the detonation tube; and the drainage tube is gapped in the detonation chamber and near the igniter inside the detonation tube respectively. The air-breathing pulse detonation engine has the advantages of capabilities of reliably working under severe condition, realizing lower forward flow resistance, simultaneously suppressing and using reverse flow and improving the engine thrust, along with simple structure and wide flight range.

The invention discloses a combustion cavity for an integral fuel oil ejecting radial hydrocyclone with functions of premixing, pre-evaporation and low pollution. The combustion cavity has a single ring cavity structure, and consists of a combustion cavity head and a flame tube, wherein the combustion cavity head comprises a precombustion stage positioned at the center and a main combustion stage positioned at the peripheral. The main combustion stage comprises a direct jet type air atomizer spray nozzle and a main combustion stage radial hydrocyclone. The jetting of the main combustion stage fuel oil and the main combustion stage radial hydrocyclone are integrated. The main combustion stage fuel oil ejected by the direct jet type air atomizer spray nozzle enters into a main combustion stage radial hydrocyclone vane channel of a main combustion stage radial hydrocyclone vane, and the fuel oil is mixed with the rotary flow air of the main combustion stage radial hydrocyclone. A premixed oil-gas mixture enters into a combustion zone through a main combustion stage mixing cavity to be combusted. The combustion mode can effectively reduce pollutant emission in the combustion cavity and reduce the length of the combustion cavity. The combustion cavity is mainly used for an aerial engine combustion cavity, and also can be used for the combustion cavities of industrial gas turbines and ship gas turbines so as to reduce the pollutant discharged into atmosphere.

An insertion system with a self-expanding braided stent (11) for implantation in a blood vessel has an outer sleeve (12) with a distal end (14) and a proximal end. An inner sleeve (16) arranged in the outer sleeve (12) is displaceable relative to the latter and protrudes, with a handling section, from the proximal end of the outer sleeve (12). Moreover, at the distal end (15), there is a tip (18) which is securely connected to a stent support (24) on which the braided stent (11) is arranged in its loaded state. The stent support (24) is arranged to be displaceable relative to the inner sleeve (16).

The invention comprises main signal line and coupling signal line. At least two coupling areas are formed between coupling signal line and main signal line. The manufacturing method includes: a) mount main signal line; b) mount coupling signal line, and make coupling signal line coupled with main signal line; c) form two coupling areas between coupling signal line and main signal line.

An antenna device includes an antenna element and a printed circuit board on which the antenna element is mounted. The antenna element includes a base, a radiation conductor formed on an upper surface of the substrate and one end of the radiation conductor being an open end, a plurality of terminal electrodes formed on a bottom surface of the substrate, and a loop conductor of a substantially U-shape. The loop conductor is arranged to face one of the terminal electrodes via a gap having a predetermined width. An antenna mounting region is provided on a upper surface of the printed circuit board to be adjacent to an edge of a long side of the printed circuit board. A feed line is led in the antenna mounting region along the edge. One and the other end of the loop conductor are connected to the feed line and a ground pattern, respectively.

An image pickup optical system, sequentially arranged from an object side to an image side, comprises the first lens element with positive refractive power having a convex object-side surface, the second lens element with negative refractive power having a concave object-side surface and a convex image-side surface, the third lens element with refractive power, the fourth lens element with refractive power having a concave image-side surface, at least one of the surfaces being aspheric, the fifth lens element with refractive power having a concave image-side surface, at least one of the surfaces being aspheric and having at least one inflection point. Each of the five lens elements may be made of plastic with aspherical surfaces. The image pickup optical system satisfies conditions related to the reduction of the total length and the system sensitivity for use in compact cameras and mobile phone cameras functionalities.

The invention relates to a thermal-coupling multiple-pulse tube refrigerator which comprises a pre-cooling pulse tube refrigerator and a low-temperature pulse tube refrigerator, and is characterized in that the thermal-coupling multiple-pulse tube refrigerator also comprises a low-temperature pulse tube refrigerator thermal buffer tube connected between a low-temperature pulse tube refrigerator regenerator and a low-temperature pulse tube refrigerator room-temperature heat exchanger of the low-temperature pulse tube refrigerator; a pre-cooling pulse tube refrigerator cold head of the pre-cooling pulse tube refrigerator is connected with one end of the low-temperature pulse tube refrigerator regenerator close to the low-temperature pulse tube refrigerator thermal buffer tube via a heat bridge. Compared with prior art, the key of the thermal-coupling multiple-pulse tube refrigerator is that the room-temperature heat exchanger and the regenerator of the low-temperature pulse tube refrigerator are connected by the thermal buffer tube so that the total length of the regenerator is reduced; thereby reducing pressure loss and heat conduction loss in the regenerator, improving the refrigerator efficiency and achieving lower refrigerating temperature.

The invention relates to a construction method for a coal mine roadway, in particular to a construction method for a high face mining support removing passage under the complicated geological condition of 6.2m, which solves the problem that in the coal mine underground mining process, a support removing passage constructed in advance can not realize the complete butt joint with the mining operation. The construction method comprises the steps that: (1) the preparation work before support removing passage construction is carried out, at the last mining stage, counterbored anchor support and protection top plates are arranged among hydraulic support frames, and a monomer column is supported and arranged under each support frame top beam for enhancing the support force the top plates; (2) during the construction for the upper passage constructed by blasting driving, the separately layered or stepped blasting driving on coal bodies is adopted, and then, the manual coal cleaning is carried out; and (3) the lower passage is constructed, and the support and protection is carried out. The coal mine roadway construction method has the advantages that when the actual geological condition of the coal mining work surface has great deviation with the predicted geological condition, for example, the complicated geological conditions in special construction such as faultage and the like occur, the normal mining can not be carried out, and the temporary moving is really needed, the technology of the construction method for the coal mine roadway can be directly used for constructing support removing passages.

The invention discloses a ship-borne aircraft capturing and arresting device. The ship-borne capturing and arresting device comprises a ship-borne aircraft landing area, a ship-borne aircraft arresting device, a controller and a ship-borne aircraft capturing device, wherein the ship-borne aircraft arresting device comprises more than two arresting systems; each arresting system comprises arresting hooks, arresting cables and buffer devices; the arresting hooks are hinged with a torque arm of a ship-borne aircraft landing frame; one end of each arresting cable is connected with a group of buffer devices, and the other end of the arresting cable moves around a group of lift blocks sequentially and then is connected with another group of buffer devices; a group of catapults are arranged between two adjacent lift blocks in the group of lift blocks; the ship-borne aircraft capturing device comprises a sensor; and the controller automatically controls the actions of the catapults according to information fed back by the sensor. The device can ensure that the aerodynamic force of ship-borne aircrafts is not influenced by the arresting hooks when the ship-borne aircraft flies, the phenomenon that the arresting hooks are bounced and oscillated when the ship-borne aircrafts land on a ship is prevent, the landing success rate of the ship-borne aircrafts is improved, the structures of the arresting systems are simplified, and the weight of the arresting systems is reduced.

The invention provides a sleeve type heat pipe organic medium evaporation medium-low temperature flue gas waste heat power generating system, belonging to the field of energy and environmental technology. The sleeve type heat pipe organic medium evaporation medium-low temperature flue gas waste heat power generating system comprises a heat pipe heat exchange system, a working medium circulation loop with organic Rankine cycle, a medium-low temperature flue gas discharge pipeline, a heat supply hot water loop and a cooling water loop; heat pipes are adopted to replace uptake ducts and downtake ducts; the heat pipe heat exchange system comprises the heat pipes, a flue gas heat exchanger and a boiler barrel; the flue gas heat exchanger and the boiler barrel are arranged in an integral vertical sleeve structure; the tubular flue gas heat exchanger is sheathed outside the boiler barrel; the heat pipes are arranged in the flue gas heat exchanger and the boiler barrel in an inclined way; the lower parts of the heat pipes are arranged in the flue gas heat exchanger, and the upper parts of the heat pipes are positioned in the boiler barrel; methyl benzene, trifluoro- dichloroethane, propane, pentafluoro-propane and the like can be used as circulating working medium; and softened desalted water with the volume accounting for 20% of the volume of the heat pipes can be taken as working solution of the heat pipes. The sleeve type heat pipe organic medium evaporation medium-low temperature flue gas waste heat power generating system has the advantages that a small space is occupied by a steam generator, the heat pipes which work effectively are short, the heat loss is low, the heat exchange efficiency is high, and the like; and the return heat quantity of exhaust gas with organic Rankine cycle can be adjusted according to the heat supply load demand.

The invention discloses a silicon carbide avalanche photodiode with a novel small-dip-angle half mesa structure, which is of an n-i-p structure or a p-i-n structure. The silicon carbide avalanche photodiode with the novel small-dip-angle half mesa structure is etched with a small angle beveled mesa from the top part to an i layer, wherein the small angle beveled mesa is cone-shaped with the top being small and the bottom being big, and the base angle of the small angle beveled mesa is less than 20 degrees. The silicon carbide avalanche photodiode with the novel small-dip-angle half mesa structure overcomes prejudices in the prior art, effectively reduces the length of the beveled mesa without changing the dip angle of the beveled mesa through reducing the depth of the beveled mesa, and effectively improves a fill factor of an SiC APD (avalanche photodiode) device, that is, an electric field peak around a SiC APD mesa can still be effectively restrained while improving the fill factor of the SiC APD device.

An imaging lens includes first to sixth lens elements arranged from an object side to an image side in the given order. Through designs of surfaces of the lens elements and relevant lens parameters, a short system length of the imaging lens may be achieved while maintaining good optical performance.

The invention discloses a distribution method for sub carriers in a cognitive OFDM network, and belongs to the technical field of cognitive radio resource management. The method comprises the steps of (1) coding scheme determining, (2) population initialization, (3) population intersection, (4) population variation, (5) population fitness evaluation, (6) population updating, and (7) iteration terminal condition judgment. According to the distribution method for the sub carriers in the cognitive OFDM network, the basic framework of a genetic algorithm is adopted, the coding scheme, mutation operation and population updating operation are redesigned aiming at the characteristics of distribution of the sub carriers in the cognitive OFDM network, the defects of resource allocation of cognitive radio networks in the prior art are overcome, the effectiveness for processing the resource allocation of the cognitive OFDM network is improved, and the spectrum efficiency is improved.

A reading enhancement device for preventing and/or treating presbyopia of the eye. The enhancement device is sutured to an outer wall of the sclera for buckling and compressing a portion of the sclera and the ciliary body inwardly and perpendicular to the plane of the sclera and exerting a posterior compression force toward the vitreous humor in the rear of the eye. The enhancement device includes a compression body with a front of the body having semi-circular convex surface. The convex surface is used for engaging, buckling and compressing both a portion of the sclera and the ciliary body of the eye. The compression body also includes an enlarged, rounded first and second end portions and an elongated center portion with the convex surface formed thereon. Also, the compression body includes a rear having an outwardly extending rib portion with a pair of grooves at opposite ends of the rib portion. The grooves and the enlarged, rounded first and second end portions are used to aid the eye surgeon in suturing and securing the enhancement device to the side of the eye.

The invention provides a manufacturing method of a small-size optical fiber coupler, and the manufacturing method comprises the steps of coating removal, cladding corrosion, fusion and tapering, primary packaging, secondary packaging and the like. According to the manufacturing method of the small-size optical fiber coupler, the cladding diameter of an area of an optical fiber to be coupled is first reduced by corrosion, so that the distance between optical fiber cores before drawing is shortened, the drawing length which is used for enabling the mold filed of a fiber core to extend to the adjacent optical fiber is reduced, and the overall length of the optical fiber coupler is shortened.

A MOS transistor including, above a gate insulator, a conductive gate stack having a height, a length, and a width, this stack having a lower portion close to the gate insulator and an upper portion, wherein the stack has a first length in its lower portion, and a second length shorter than the first length in its upper portion.

The embodiment of the invention discloses an external communication method, device and system for a 6LoWPAN (internet protocol 6 over low power wireless personal area network) intra-network device and the outside. The method comprises: receiving a data packet sent by the intra-network device, wherein the header of the data packet carries a source address, a destination address and an external forwarding mark, the source address of a link layer header and the source address of an adaptation layer header are addresses of the intra-network device, and the destination address of the link layer header and the destination address of the adaptation layer header are addresses of a gateway device; acquiring the home address of the corresponding external network device; rewriting the destination address of the adaptation layer header of the data packet as the home address of the external network device, and packaging again; and transmitting the data packet after being packaged again to the external network device. The invention is suitable for compressing the header for the data packet when the intra-network device and external network device of the 6LoWPAN network communicate with each other.

The invention discloses an optical imaging lens. The optical imaging lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are sequentially arranged from an object side to an image side. The above six lenses satisfy the following conditional expression: TTL/AAG < = 4.1; 1.2 < = (T1 + T6)/ (T2 + T3 + T4). According to the technical scheme of the invention, through controlling the arrangement of the concavo-convex surfaces of all the above lenses and controlling related parameters according to at least two conditions, the good optical performance is maintained and the effective focal length of the system is increased. Meanwhile, the field angle of the lens is reduced and the length of the lens is shortened.