225 results about "Tail structure" patented technology

Spinal implants are disclosed that can be used for annular repair, facet unloading, disc height preservation, disc decompression, or for sealing a portal through which an intervertebral implant was placed. In some embodiments, an implant is placed within the intervertebral disc space, primarily within the region of the annulus fibrosus. In some embodiments, the implant is expandable. In some embodiments, the implant has a sealing tail structure comprising a tail flange and a linkage. In some embodiments, the sealing tail structure limits the extrusion or expulsion of disc material, either annulus fibrosus or nucleus, into the posterior region of the spine where it could impinge on nerves. In some embodiments, the tail structure is retained in place within the annulus fibrosus by means of an anchor. In some embodiments, the anchor is constructed from multiple components.

Systems, methods, and devices provide a vehicle, such as an aircraft, with rotors configured to function as a tri-copter for vertical takeoff and landing (“VTOL”) and a fixed-wing vehicle for forward flight. One rotor may be mounted at a front of the vehicle fuselage on a hinged structure controlled by an actuator to tilt from horizontal to vertical positions. Two additional rotors may be mounted on the horizontal surface of the vehicle tail structure with rotor axes oriented vertically to the fuselage. For forward flight of the vehicle, the front rotor may be rotated down such that the front rotor axis may be oriented horizontally along the fuselage and the front rotor may act as a propeller. For vertical flight, the front rotor may be rotated up such that the front rotor axis may be oriented vertically to the fuselage, while the tail rotors may be activated.

A hollow elliptical-cylindrical hull conformingly houses a hollow rectangular-prismatic cabin whereby the four longitudinal parallel outside edges of the latter make contact with the inside surface of the former. The fully constructed aircraft (either non-powered or powered) includes the integral hull-plus-cabin structure along with nose, tail and airfoil structures that are coupled therewith. The cabin conformingly accommodates hollow rectangular-prismatic modules useful for cargo storage. While the nose and/or tail structure is uncoupled from the integral hull-plus-cabin structure, the modules are inserted into the cabin and the cabin is sealed. The aircraft is lifted (e.g., via airplane, helicopter, rocket or balloon) to a particular elevation and released, whereupon the two wings fully emerge and the aircraft effects controlled flight until reaching its destination. After landing, the nose and/or tail structure is uncoupled from the integral hull-plus-cabin structure, the cabin is unsealed, and the modules are removed from the cabin.

The invention relates to an underwater hybrid-power robot platform which comprises a housing, a mainframe cabin and a motion control cabin. The outer contour of the housing is in shape of bionic fish,one end of the housing is connected with a bionic fish tail structure, and propellers are arranged on two sides of the housing. The side, close to the front end of the housing, of the mainframe cabinis connected with a camera, and an electronic compass and a controller are arranged in the mainframe cabin. A pitching gravity center adjusting mechanism is installed in the motion control cabin. Thepropellers, the electronic compass and the pitching gravity center adjusting mechanism are electrically connected with a battery cabin. The underwater hybrid-power robot platform adopts the hybrid-power driving design of the propellers and the bionic fish tail structure, and the operating capability of a robot in a complicated ocean current environment is greatly improved. The underwater hybrid-power robot platform can carry multiple types of detection devices, can meet complicated task demands, can performs operations such as water quality extraction, detection and photography, can sample and detect water at different depths through a water pumping cabin and has a wide application prospect.

The invention discloses a multifunctional AUV based on a bionic lateral line, sensors are welded on a PCB circuit board and embedded in a carrier casing, a front head cabin, a main body cabin and a tail part are in streamlined head-tail sequential connection, sensor holes showing as the bionic lateral line are evenly distributed on the front head cabin and the main body cabin, the rear ends of both sides of the main body cabin are provided with steering engines, the end parts of the steering engines are connected with propellers, the end parts, far away from the front head cabin, of the propellers are provided with guiding covers, the terminal end of the main body cabin is provided with the tail part, and the tail part is a streamlined fish tail structure. Pressure data is obtained by the sensors which are arranged like the bionic lateral line, and during velocity measurement, a carrier directly faces the flow direction, and can correctly estimate local velocity. The AUV can determine direction and a path of a vibration source by sensing pressure gradients and changes so as to realize underwater positioning or obstacle avoidance. The multifunctional AUV has the advantages of small size and low cost, improves efficiency of identification and intelligentization of underwater equipment, and provides theoretical and data support for flow velocity measurement, underwater positioning and obstacle avoidance.

Apparatus for a micro-electro-mechanical switch that provides for latching switching action. The switch has a cantilever arm disposed on a substrate that can be moved in orthogonal directions for latching and unlatching. To latch the switch, the cantilever arm is moved back by a comb-drive actuator and then pulled down by electrodes disposed on the substrate and the cantilever arm. The comb-drive actuator switch is then released and the cantilever arm moves forward to be captured by a dove-tail structure on the substrate. When the voltage to the electrodes on the substrate and the cantilever arm is removed, the cantilever arm is held in place by the dove-tail structure. The switch is unlatched by actuating the comb-drive actuator to move the cantilever arm away from the dove-tail structure. The cantilever arm will then pop up once it is released from the dove-tail structure.

The invention relates to a method of manufacturing a tail structure for a rotary wing aircraft, the structure comprising:

a tubular portion or duct (63) presenting two ends and including two collars or flanges (66, 70) extending respectively from each of said two ends; and

two curved fairing side walls (45, 47) extending respectively around the two collars or flanges; said two side walls being made of a composite material comprising an organic matrix and reinforcement; in a method of the invention, the side walls are united by solidifying the matrix.

A bionic underwater robot for achieving a variety of motions is disclosed. The bionic underwater robot includes a head and one or more tail structures. Each of the one or more tail structures includes one or more joint structures. Each of the one or more joint structures includes a connection plate, and a modular assembly, comprising an upper servo motor, a lower servo motor, and a bevel gear mechanism, is motorized for performing various movement motions of the joint structure. The bevel gear mechanism is integrally formed by an intermediate bevel gear, a first bevel gear, and a second bevel gear. The upper servo motor drives the first bevel gear from a first side of the modular assembly, while the lower servo motor drives the second bevel gear from a second side.

The invention discloses escherichia coli bacteriophage vB_EcoM_swi3 of which the preservation number is CCTCC M 2019467. The bacteriophage belongs to myoviridae, and is provided with a polyhedral headand a telescopic tail structure, wherein the diameter of the head is about 80nm, and the length of the tail is about 120nm. Bright plaque can be formed on a solid culture medium, an aureole does notexist on the periphery of the plaque, the edge is clear and regular, and the diameter is about 1-1.5mm. The bacteriophage has favorable splitting effects on pig-derived escherichia coli and chicken-derived escherichia coli, especially pig-derived pathogenic escherichia coli and chicken-derived pathogenic escherichia coli, and has quite great application prospects in a plurality of respects of medicinal preparations for preventing and treating pig-derived colibacillosis and chicken-derived colibacillosis, feed additives and the like.

The invention provides a desert quadruped robot imitating a lizard. The desert quadruped robot imitating the lizard comprises a robot body, a C-type leg structure and a tail structure, the C-type leg structure comprises 2N C-type legs which are symmetrically arranged on the two sides of the robot body through drive motors respectively, the tail structure has two degrees of freedom through a horizontal swinging steering engine and a vertical swinging steering engine and is arranged in the middle of the rear end of the robot body through the horizontal swinging steering engine, and the drive motors of the C-type legs and the horizontal swinging steering engine and the vertical swinging steering engine of the tail structure are connected with a controller through wires. The desert quadruped robot imitating the lizard can ensure a stable and rapid walking state in the desert environment, and is high in adaptability to the desert environment. Meanwhile, intensity of pressure on sand grains from the legs is reduced, and small sinkage of the robot is ensured. The flexible tail structure not only can keep balance of the robot body in the walking process of the robot, but also can help the robot better escape from danger after the robot sinks into the sand.

The invention discloses an electric hydraulic proportion twin rudder following and synchronous operation control system, which comprises an autopilot control system, a left rudder machine power/signal control box, a left rudder machine control box, a left rudder machine system, a left rudder angle signal feedback device as well as a right rudder machine power/signal control box, a right rudder machine control box, a right rudder machine system and a right rudder angle signal feedback device. The left rudder machine system and the right rudder machine system adopt a hydraulic rudder machine control system which uses a variable hydraulic pump and a proportional electromagnetic valve as a control core. In the left rudder machine system and the right rudder machine system, two hydraulic pumps drive two sets of oscillating oil cylinders to drive a tiller; the autopilot control system is a self-adaptive autopilot control system. The control system has the advantages that as the proportional valve and a variable pump are adopted for control, the mechanical shock of the device is reduced so as to be convenient for maintenance; since the use of the proportional valve and steering signals are continuously variable, the continuously stable startup and stop of the whole system are realized to effectively reduce the mechanical shock, thus not only protecting the mechanical system of the rudder machine, but also being beneficial to reducing the mechanical shock of the tail structure; furthermore, the use of the variable hydraulic pump and the proportional valve meets the requirements of various single-control indexes and the synchronous operation for steering the twin rudders.

The invention provides a real-time fluorescence constant temperature index amplification method. According to the method, an oligonucleotide signal amplification template of a stem-ring-tail structure and marked with fluorescence or an oligonucleotide signal amplification template of a pure linear structure and marked with fluorescence are used, the process of cutting, extending and chain replacing can be executed repeatedly at the constant temperature under the combined action of a nicking agent with one chain of a cut double-chain nucleic acid molecule and a DNA polymerase with chain replacing activity, so that target molecule specific oligonucleotides are amplified in an index form, and fluorescence signals can be released. By means of varieties and abundance of the fluorescence signals released by the signal amplification templates corresponding to the different target molecule specific oligonucleotides, multiple target molecules can be detected in parallel in a single reaction tube, a detection tank or a detection hole, the target molecule specific oligonucleotides can be amplified by 106 times or more, and the technical problem that by means of an existing constant temperature amplification technology, multiple target molecules cannot be detected at the same time in one detecting system can be effectively solved.

The invention provides a wind turbine blade with a tip vane. The wind turbine blade with the tip vane comprises a tip and a tip vane, wherein the tip vane further comprises an empennage connection component, a first empennage and a second empennage; the first empennage and the second empennage are simultaneously connected with one end of the empennage connection component to form a forked tail structure; the other end of the empennage connection component is sheathed and fixedly arranged on the tip; therefore an included angle is respectively formed between the first empennage and the wind turbine blade as well as between the second empennage and the wind turbine blade; the first empennage is positioned on the windward side of the wind turbine blade; the second empennage is positioned on the lee side of the wind turbine blade; and the first empennage and the second empennage are both of the flat structure and tangentially extend along the rotation track of the wind turbine blade. According to the wind turbine blade with the tip vane, which is disclosed by the invention, the aerodynamic characteristics and the surface load of the wind turbine are effectively improved, and the tip loss and the aerodynamic noise are reduced.

The invention provides an annealing process of an aluminum alloy coiled material. According to the annealing process provided by the invention, the annealing time is greatly shortened,the problem of poor finished material coil head-tail structure property difference generated when annealing treatment is carried out on an aluminum-magnesium alloy coiled material is solved by adopting an existing aluminum alloy annealing process, the size of a crystal grain can be effectively controlled and the plasticity and toughness of a finished product state coiled material are improved. The annealing process is characterized by comprising the following steps: placing the aluminum alloy coiled material into an annealing heating furnace; fast heating the aluminum alloy coiled material by setting the furnace gas temperature of the annealing heating furnace as T+delta T, and monitoring the temperature of the aluminum alloy coiled material; when the outer side temperature of the aluminum alloy coiled material, namely the high-point temperature of the aluminum alloy coiled material, reaches T-delta t, reducing the furnace gas temperature of the annealing heating furnace to T, wherein the temperature reduction time is 60-90 minutes; and when the inner side temperature of the aluminum alloy coiled material, namely the low-point temperature of the aluminum alloy coiled material, is monitored to reach T-(5-30 DEG C), preserving heat for 60-120 minutes, and then taking out of the furnace for air-cooling, wherein the temperature T is the predetermined target temperature of the annealing of the aluminum alloy material, the delta T is 20-150 DEG C, and the delta t is 10-70 DEG C.

The invention relates to a fixed tube-sheet heat exchanger with a temperature control function. A head structure and a tail structure are respectively arranged at two ends of a shell, at least one heat exchange pipe is arranged in the shell, tube pass fluid flows out from a head cavity and flows in a tail cavity from the heat exchange pipe, a shell pass inlet and a shell pass outlet are arranged on the shell, the fixed tube-sheet heat exchanger with the temperature control function is characterized in that a central channel is also arranged in the shell, a heat-insulating layer is arranged on the inner wall of the central channel, the tube pass fluid flows out of the head cavity and flows in the tail cavity also by the central channel, the heat exchange between the tube pass fluid in the central channel and shell pass fluid can be isolated by the heat-insulating layer, at least one annular baffle plate and at least disc type baffle plate are also simultaneously arranged in the shell, and the tail cavity at least comprises one mixed cavity. The fixed tube-sheet heat exchanger with the temperature control function has the following beneficial effects that the heat exchange coefficient of the heat exchanger is effectively increased, the heat exchange area can be reduced, and the manufacturing cost of equipment can be lowered; the temperature control structure can ensure the running stability of the heat exchanger under variable working conditions, and guarantee the steady-state operation of downstream equipment of the heat exchanger.

A disposable airdropped glider. The glider body is constructed from precut panels cut from (MDO) or (HDO) plywood and assembled with pocket-screw joinery or piano hinges. A skid board forms a landing surface and a cargo deck roll-off surface. The glider has pivoting wings and struts. The glider has a triple-tail, a flat nose and honeycomb paperboard panels between the nose and the cargo. Wings are pivoted from a position overlying the fuselage to a flying position by gas springs in wing spars which are compressed by a chain attached to the fuselage through a rotating bracket such that the gas springs are compressed when the wings are folded. The airfoils are plastic extrusions with openings that hold the wing spars and co-formed jury spars which attach the upper and lower surface of the wing. A parachute uses a part of the tail structure to form a deployment drogue.

The invention belongs to the field of surfactants and particularly relates to a saturated anacardol ether sulfonate surfactant as well as a preparation method and application of the saturated anacardol ether sulfonate surfactant. According to the preparation method, saturated anacardol is taken as a starting material to be subjected to serial reactions to generate an anionic surfactant with a double-tail structure, namely saturated anacardol ether sulfonate; the surface (interface) performance of the anionic surfactant is good due to the unique double-tail structure, the anionic surfactant can form low (or ultralow) interfacial tension with simulated oil alkane or crude oil when being independently used or compounded with other auxiliary agents, has good application prospects in numerous fields including mineral floatation, industrial washing, tertiary oil recovery and the like and can be taken as an efficient oil displacement agent to be applied to the tertiary oil recovery. The saturated anacardol ether sulfonate surfactant has a following structure shown in the specification.