102results about How to "Variable length" patented technology

A bifurcated graft having a trunk portion and two limb portions, each defined by a docking end and a non-docking end, that is assembled in-situ. The trunk and limb portions are supported by a combination of full and partial stent structures that are connected by longitudinal stent struts to form a continuous stent lattice. The diameters of the docking sections may be standardized such that any limb portion may be inserted into any trunk portion, providing the same degree of mechanical interference for trunk and limb portions having non-docking ends of various diameters.

A device for controlling a hydraulic actuator includes an electrically operated valve that controls the flow of a pressure medium in the actuator in response to the operations of three controllers. A first of the controllers designates a position of a piston of the valve. A second of the controllers commands movement of the actuator. And a third of the controllers electronically controls a sequence of movements of the actuator. The three actuators are arranged in a common housing located on the valve.

A metal guitar slide ring, for playing a stringed musical instrument such as a guitar in a slide style, is configured to accept insertion of a musician's finger and still allow the fingertips to remain flexible and free to play instrument strings. The ring is configured with non-parallel ends so that the effective slide bar length that contacts the strings can be varied by the musician by rotating the ring about the finger. The range of adjustment along with the capability of wearing a plurality of rings simultaneously enable a musician to play up to 12 possible intervals on a guitar without retuning compared to 4 intervals with a conventional guitar slide. At least a portion of the ring may be coated with a hard smooth slide surface for substantially improved playing qualities, aesthetically appealing appearance, and superior comfort.

The invention relates to an airship balloon, the capability of the airship balloon is variable, and consists of a balloon (1), an inflation mouth (2) and a balloon telescopic device which can be used for stretching the balloon in axial direction. the balloon telescopic device is arranged in the balloon (1); the air outlet of the inflation mouth (2) is communicated with the inner cavity of the balloon (1); the invention has the advantages that due to the balloon telescopic device which can be used for stretching the balloon in axial direction, when the airship climbs up to high, and when the relative pressure in the balloon is increasing, the balloon telescopic device can shorten the balloon in axial direction, and the capacity in the balloon is enlarged accordingly to reduce the stress of the balloon wall, thereby achieving the purpose of preventing the balloon wall from being damaged; at the same time, the aerodynamic appearance of the balloon which is in proper stiffness, and can be kept to help fly.

A mobile terminal comprises a flexible display module; a hinge frame coupled to a rear surface of the flexible display module, having a plurality of unit frames connected by hinge coupling in a length direction; and a variable frame arranged in the hinge frame in a length direction, of which length is controllable, wherein the display module and the hinge frame are bent or unfolded to be flat in accordance with a length change of the variable frame. Since the mobile terminal may control its curved level in accordance with a use condition, it is advantageous in that a sense of immersion of the screen is increased by the control of the curvature of the mobile terminal if necessary and it is convenient to set the mobile terminal.

The invention provides an online product label printing system. The system comprises a database server, a printing computer and a printer, wherein the printing computer is connected to the database server, the printer is connected with the printing computer, and the database server includes multiple printing databases. A printing software program is installed in the system. The printing computer selects a proper printing database from the database server via the printing software program, scans obtained scanning data according to product information, controls the printer to print product labels, and records the printing content in real time in the background. The invention provides an online product label printing method based on the system at the same time.

A filter for use within a baghouse for filtering particulate material from fluid flow. The filter is to be supported by a tubesheet of the baghouse. The filter includes an elongate bag that has an open end adapted to be disposed adjacent to the tubesheet and an encircling sidewall that extends from the open end to a distal end of the bag. The sidewall permits passage of fluid there through so that the fluid may pass through the bag and blocks passage of particulate material. The filter includes an elongate cage that is located within and supporting the bag and that has a variable effective length. The filter includes cage-associated structure for increasing the effective length of the cage to maintain the sidewall to be taut adjacent the cage. The cage may include structure inhibiting movement of the cage. The filter may be part of a baghouse assembly.

The invention discloses a lightweight key dynamically variable data encryption device and method. The lightweight dynamic key data encryption device comprises a server and nodes; wherein the server comprises a key generation module, a key synchronization module, an encryption and decryption module and a key updating module; and the node comprises a key requesting module, a key synchronization module and an encryption and decryption module. After the node initiates a session request, the server generates a session key (second key) if the identity is valid; then the synchronization of the secondkey is completed through two times of encrypted communication, and two-way data encryption communication is performed; the second key generation, synchronization and data communication steps are repeated after a key updating cycle until the communication is completed. The XOR operation is used in the encryption and decryption process, therefore, the operate mode is simplified; and the second keysynchronization, updating and data encryption and decryption are realized under the condition of little consumption of node resources, therefore, the contradiction between the limited Internet of things node resources and energy consumption and the complex security algorithm is effectively solved; meanwhile, the key length and updating cycle are variable, therefore, the difficulty of deciphering is increased, and the communication security can be protected better.

The invention relates to a method for producing a fuel tank and to a fuel tank for motor vehicles. The method comprises the extrusion of web-type preforms (1), the shaping of said preforms in the first heat of the extrudate in a multi-part moulding tool in a first step to form shell-type semi-finished products (6, 6a, 6b) and in a second step in the same moulding tool (2) to form a one-piece closed container. At least one refuelling and/or operational ventilation unit (5) is fixed to the inner wall of at least one semi-finished product, in such a way that at least one pre-assembled part of the refuelling and/or operational ventilation unit comprising at least one connection fitting (5c), at least one ventilation line (5b) and at least one functional component is bonded and/or positively connected in an operation to the inner wall (7a). The wall of the semi-finished product comprising the connection fitting is punctured by the connection fitting during assembly, using at least one length-adjustable line section as part of the ventilation line.

A device, and related method, for storing and organizing a power supply cord for portable electronic devices, wherein the device includes an outer shell 1 having a first entry hole 4; and an inner spool 2 having at least two circular flanges 6 connected in the middle by a barrel 8; a track 10 between the flanges; an arbor 7 on the top side and bottom side of the barrel; a second entry hole 5 within the device; and at least one tread 3 on the inner portion of the outer shell, wherein the spool fits snuggly into the outer shell to allow the spool to rotate therein.

Robotic arms and surgical robotic systems incorporating such arms are described. A robotic arm includes a roll joint connected to a prismatic link by a pitch joint and a tool drive connected to the prismatic link by another pitch joint. The prismatic link includes several prismatic sublinks that are connected by a prismatic joint. A surgical tool supported by the tool drive can insert into a patient along an insertion axis through a remote center of motion of the robotic arm. Movement of the robotic arm can be controlled to telescopically move the prismatic sublinks relative to each other by the prismatic joint while maintaining the remote center of motion fixed. Other embodiments are also described and claimed.

The invention discloses an all-dimensional oriented blasting charge guide rail device and a method thereof, and belongs to oriented blasting charge devices and methods. A first guide rail is connected with a plurality of common guide rails to form the device, antiskid wires (2) are mounted at the end (1) of the first guide rail, a longitudinal ridge (4) is arranged in the middle of a cartridge push rail (3) of the guide rail, cartridge antiskid saw teeth (5) are distributed on the longitudinal ridge (4), a hook hole (8) is formed in a front guide rail tail end (6), a metal hook (9) is arranged at a rear guide rail head end (7), the guide rails are connected through the metal hook (9) and the hook hole (8), the oriented blasting charge method is used for oriented blasting charge of middle and deep holes of forced grooving top-caving in the coal mining process, and the device is simple in integral structure and convenient to operate by the aid of traditional charge technology. The mounting directions of a cartridge energy-concentrated cover and the like is as same as the breaking direction of rocks, and accurate oriented control fracture blasting is realized.

A method performed by a computing system. Embodiments of the method include shifting source data by a shift amount and encrypting the shifted data with an encryption key to produce encrypted data. An encryption package is produced by removing a portion of the encrypted data. Decryption data is generated that includes the shift amount, the encryption key, the location in the encrypted data from which the data was removed, and the data that was removed. Copies of the encryption package are sent to remote client computing devices and the system waits until a decryption time. At the decryption time, copies of the decryption data are sent to the client computing devices, which are each configured to decrypt the encryption package using the decryption data to obtain the information of the source data at substantially the same time.

The invention relates to an AGV four-wheel independent steering and differential combination control mechanism. A four-wheel independent steering and differential combination mode is adopted, throughmutual cooperation of two devices, the rotation angles of four wheels and the rotation speeds of the wheels on the two sides can be controlled at the same time, the 360-degree in-situ any-radius rotation turn-around action and slant motion are finished, an AGV can achieve in-situ 360-degree rotation, horizontal motion at each angle and steering at any radius, and compared with front wheel steeringand differential steering, the mechanism can finish the 360-degree in-situ any-radius rotation turn-around action and slant motion. Compared with an AGV using special tires (Mecanum wheels and universal wheels) for steering, the four-wheel independent steering and differential combination control mechanism can adopt common tires, the rotation directions of the four wheels and the differential quantity of the tires on the two sides are controlled so as to stably control the steering mode of a mobile platform, and abrasion of the tires can be reduced to the maximum limit. The AGV can be suitable for the complex ground under the condition that the flexible state is kept.

The invention relates to an air freight transport system which is used to transport various freights to different destinations (26, 28, 30). According to the invention, a transport aeroplane (10), which crosses through at least three air zones (14, 16, 18) associated with one station (20, 22, 24), is prepared. The aeroplane can not land on one of the stations (20, 22, 24). Transportation of the freight between the transport aeroplane (10) and one of the stations (20, 22, 24) occurs with the help of feeder planes (32), whereby transfer of the freight between the feeder plane (32) and the transport plane (10) takes place in the air. The transport plane (10) and two feeder planes (32) form the inventive air freight transport system and the transport aeroplane (10) can comprise two feeder planes (32) which are connected together. The inventive air freight transport method improves the charge of the transport aeroplanes (10). Additionally, the transport paths for individual freights can be shortened thus making said method more economical.

The invention discloses a waterproof detachable electric type test tube brush which comprises a power assembly, an upper rod piece, a connection assembly, a lower rod piece and bristles, wherein the power assembly comprises a battery shell, an upper shell, a lower shell, a motor seat, a shaft coupler, a bearing pedestal, a bearing, a connection piece, sealing rings, a battery and a motor; the battery is positioned in the battery shell; the battery shell is fixedly connected with the lower shell; the lower shell is mechanically connected with the upper shell; the motor seat is mounted in the lower shell; a motor is mounted on the motor seat; an output shaft of the motor is connected with the connection piece through the shaft coupler; the bearing is mounted on the shaft at the upper end of the connection piece and is mounted in the bearing pedestal; the upper rod piece is connected with the interior of a longitudinal hole of the connection piece; the lower end of the upper rod piece is connected with a lower rod piece through the connection assembly; the bristles are fixedly arranged on the lower rod piece; sealing rings are embedded into the lower ends of the upper shell and the lower shell; a sealing ring is embedded into the upper end of the bearing pedestal. The electric type test tube brush is waterproof under the assistance of the sealing rings, can clean a test tube and is convenient to detach.

The invention discloses a method for improving security of IPv6 protocol data packets. The method comprises the steps of expanding identity options in IPv6 target option packet headers, wherein the options comprise fields such as an option type, option length, an option version, a reservation field, an autonomous domain number, user identity, a time stamp and a digital signature; and the method discloses the meaning, a data generation mode and an implementation method of each field. According to the method, the identities are added to data packets sent by a user, and the identities are prevented from being counterfeited, tampered and reversely deduced; an overall mechanism is beneficial for enhancing the accountability of the internet and reducing counterfeit attack behaviors of the internet; and the method has positive significance to establishing the safe and credible internet.

The invention discloses an extensible emergency bridge platform. The extensible emergency bridge platform comprises an up-down bridge support (1), bridge position fixing blocks (2), wheel type chassis (3), a bearing frame (4), an electric drive swivel assembly (5), a gravity center adjusting assembly (6), hydraulic lifting leg assemblies (7) and an extensible bridge floor assembly (8). The structures of the wheel type chassis (3) and the structure of a typical wheel type chassis on the market are the same, and only partial assembling sizes are adjusted. The extensible emergency bridge platform can move to an appointed position through the wheel type devices, the bridge platform is rapidly erected through the leg type devices and can serve as an emergency bridge for a river, a ditch, a broken bridge, a deep ditch and a road face after a flood, the length of a bridge floor is changeable, convenience and rapidness are achieved, and pedestrians and small vehicles can go through temporarily.