105 results about "Flapping" patented technology

Multi-wing hovering and gliding flapping Micro Air Vehicles (“MAV”) are disclosed. The MAV can have independent wing control to provide enhance energy efficiency and high maneuverability. Power to each wing can be controlled separately by varying the amplitude of the wing flapping, the frequency of the wing flapping, or both. The flapping frequency can be controlled such that it is at or near the natural frequency of the wings for improved energy efficiency. The wings can be controlled by a gear train, coil-magnet arrangement or many other actuation systems that enable variable frequency flapping, variable amplitude flapping, or a combination of both. The gear train mechanism provides gyroscopic stability during flight. The wing flapping can include a rotation, or feathering motion, for improved efficiency. The wings can be transitioned between flapping flight and fixed wing flight to enable gliding and hovering in a single configuration.

An articulated rotor system with a servo-flap rotor control system locates the focal point of a blade retention spherical elastomeric bearing inboard of a joint in the servo-flap pitch control tube which separates the flap hinge and supports the servo-flap pitch control tube on a single pivot bearing within a blade retention spindle. Rotor blade flapping produces relative movements between the servo-flap pitch control tube and the blade retention spindle which is converted through a servo-flap drive linkage into servo-flap pitch motions to provide flap / pitch coupling which reduces steady and transient blade flapping.

A method of operating a rotor aircraft involves measuring an airspeed of the aircraft and a rotational speed of the rotor. A controller determines a Mu of the rotor based on the airspeed of the aircraft and the rotational speed of the rotor. The controller varies the collective pitch of the rotor blades in relationship to the Mu, from an inertia powered jump takeoff, through high speed high advance ratio flight, through a low speed landing approach, to a zero or short roll flare landing. In addition as the rotor is unloaded and the rotor slows down, the controller maintains a minimum rotor RPM with the use of a tilting mast.

A dental surgical drill guide assembly and method includes a surgical guide housing and a base frame that fits to both gum tissue and one or multiple small areas of jawbone. The apparatus may be configured to accurately place dental implants according to planned positions. Such apparatus may increase the stability of the surgical guide by clasping and / or contacting the jawbone, while improving the overall fit and minimizing the need of invasive surgery and flapping by also clasping and / or contacting selected areas of the gum tissue at the same time. Self-locking alignment members aid in easy removal, and re-installation, of the surgical guide housing to the base frame.

The invention discloses a novel modular bionic underwater robot based on full-flexible pectoral fins. A hydrodynamic module of eagle ray pectoral fins is analyzed, and motion of the pectoral fins is decomposed into vertical bending flapping in the vertical body longitudinal axis direction and twisting motion taking the vertical body longitudinal axis direction as the axis. The whole robot comprises a sectioned main body, a left flexible pectoral fin module, a right flexible pectoral fin module and a tail fin module, and a group module is formed by connecting fin connecting parts; the left and right flexible pectoral fin modules are identical in structure and are in mirror symmetry; a pectoral fin framework adopts a structure similar to that of a plane rib, a symmetrical airfoil is taken as the basic shape, and the pectoral fin modules with streamline sections are spliced through serial connection of straight pectoral fin trunk bones and steel wires. A large steering engine and a small steering engine are arranged at the root and the tip of each pectoral fin to control vertical flapping and twisting motion of each pectoral fin. Through adjustment of motion amplitude, motion frequency and phase difference of the two steering engines of each pectoral fin, different pectoral fin motion postures can be realized, and fish body motion can be finished better.

The invention discloses a biomimetic robotic dolphin. The biomimetic robotic dolphin comprises a beak part, a head shell, a pectoral fin mechanism, a main advancing mechanism, a tail part, a control part and a dolphin skin, wherein the beak part, the head shell and the pectoral fin mechanism form a streamlined head for the robotic dolphin; a left pectoral fin and a right pectoral fin are arranged on the two sides outside the head of the robotic dolphin and driven by six steering engines to swing, flap and turn respectively; the main advancing mechanism consists of a main flapping mechanism, a turning mechanism, a main advancing mechanism shell, a main advancing mechanism rubber pipe, a supporting frame and a dorsal fin which are driven by a direct current motor and the steering engines to realize flapping and turning of the body; the tail part comprises connecting nuts, a tail part skeleton and a tail fin flapping mechanism which are driven by the steering engines to realize the flapping of the tail fin; the control part consists of a control board, a communication module and a motor driver and is used for controlling the movement of the dolphin; and the dolphin skin is sleeved outside the mechanical structure of the robotic dolphin to realize integral sealing. The biomimetic robotic dolphin has the advantages of compact structure, realistic appearance and capability of providing an experiment platform for manufacturing tools for underwater operation.

A biomimetic pitching and flapping mechanism including a support member, at least two blade joints for holding blades and operatively connected to the support member. An outer shaft member is concentric with the support member, and an inner shaft member is concentric with the outer shaft member. The mechanism allows the blades of a small-scale rotor to be actuated in the flap and pitch degrees of freedom. The pitching and the flapping are completely independent from and uncoupled to each other. As such, the rotor can independently flap, or independently pitch, or flap and pitch simultaneously with different amplitudes and / or frequencies. The mechanism can also be used in a non-rotary wing configuration, such as an ornithopter, in which case the rotational degree of freedom would be suppressed.

A dental surgical drill guide assembly and method includes a surgical guide housing and a base frame that fits to both gum tissue and one or multiple small areas of jawbone. The apparatus may be configured to accurately place dental implants according to planned positions. Such apparatus may increase the stability of the surgical guide by clasping and / or contacting the jawbone, while improving the overall fit and minimizing the need of invasive surgery and flapping by also clasping and / or contacting selected areas of the gum tissue at the same time. Self-locking alignment members aid in easy removal, and re-installation, of the surgical guide housing to the base frame.

An articulated rotor system with a servo-flap rotor control system locates the focal point of a blade retention spherical elastomeric bearing inboard of a joint in the servo-flap pitch control tube which separates the flap hinge and supports the servo-flap pitch control tube on a single pivot bearing within a blade retention spindle. Rotor blade flapping produces relative movements between the servo-flap pitch control tube and the blade retention spindle which is converted through a servo-flap drive linkage into servo-flap pitch motions to provide flap / pitch coupling which reduces steady and transient blade flapping.

A pet toy is provided having a linearly elongated main body terminated at each end by plug forming an anchor plug. A replaceable wing assembly is affixed to each anchor plug. A sound generation mechanism is further incorporated in one said anchor plug. As the toy is flying through the air, the wings provides a visual ‘flapping’ like stimuli, similar to that of the wings of a bird. An audible stimuli is added during the tossing or retrieval of the toy. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

The invention discloses a pneumatic flapping and air exhausting spraying self-cleaning type air filter applicable to an automobile engine. The pneumatic flapping and air exhausting spraying self-cleaning type air filter comprises a filter element, a control device and a spraying and flapping dedusting device, wherein the spraying and flapping dedusting device is arranged on the filter element in a matched mode and connected between a pre-filter / an upper-level filtering unit and an engine body / a lower-level filtering unit of the automobile engine; and the control device is connected to the spraying and flapping dedusting device and used for controlling the spraying and flapping dedusting device. According to the scheme, the defects that the dedusting difficulty is large, time and labor are wasted, and the maintenance cost is high in the prior art can be overcome, and the beneficial effects that dust is convenient to remove, time and labor are saved and the maintenance cost is low are achieved.

The invention provides a pond-skater imitating piezoelectric actuation type ultramicro wing-flapping amphibious robot. The robot comprises two wings, two longitudinal frameworks, two lateral panels, a piezoelectric actuator, a wing fixing piece, a piezoelectric actuator fixing piece and four high-elasticity leg supporting pieces, wherein the wing fixing piece comprises a passive hinge; every two leg supporting pieces are connected with and fixed to the corresponding lateral panel; two wings are connected and fixed through the wing fixing piece; the piezoelectric actuator is arranged along a central axis and connected and fixed through the piezoelectric actuator fixing piece; and the two lateral panels are separately connected with and fixed to the two longitudinal frameworks. The robot disclosed by the invention can fly in the air through the flapping of the wings, can keep balance on a water surface through the hydrophobic characteristic of the leg supporting pieces, and can move on the water surface through the flapping of the wings. The robot disclosed by the invention adopts a pond-skater type bionic structure, is low in size, light in weight and good in stability, can controllably move on the water surface and in the air, has amphibious characteristics, and can adapt to different environment.

A rotor, comprising at least one rotor blade connectable to a rotor head, which rotor blade possesses a blade neck having a virtual flapping hinge in the form of a flexurally soft, flexurally elastic blade-neck portion, there being provided, in a blade-connector region of the blade neck, two auxiliary flapping hinges, spaced apart from one another in the radial longitudinal direction of the rotor blade with reference to a rotor radius, between which the virtual flapping hinge is substantially disposed and between which the blade neck is deformable in flexurally elastic and curved fashion in the context of a flapwise motion. A rotorcraft, in particular a helicopter, in particular a tiltrotor helicopter, having at least one such rotor.

A flying toy capable of moving by flapping of wings includes an actuation mechanism, for the wings, comprising a crank drive rotated by a means providing the driving force, two flexible wings arranged symmetrically with respect to the vertical plane of symmetry of the toy and connected, at the wing bases, to the actuation mechanism. The wing bases are mounted oscillating about axes arranged on both sides of the vertical plane of symmetry of the toy. The toy includes a control means, that receives a control signal indicating a left turn, increases the tension on the right wing and reduces it on the left wing. For a right turn, the opposite action is performed.

The present invention comprises: a hydraulic motor rotationally driven as pressure oil from a hydraulic pump is supplied by way of a control valve; a remote control valve adapted to switch the control valve; a bypath line connected to both hydraulic lines of the hydraulic motor; a communicating valve having a position for closing the bypath line and a position for opening the bypath line; and a throttle valve for controlling the communicating valve, wherein the throttle valve is adapted to set the communicating valve to a closed position at the time when said remote control valve is operated for rotating, and to set the communicating valve to an open position at the time when said remote control valve is returned to a neutral position, as well as to allow the pressure oil of deceleration side to be released by a predetermined time, whereby the flapping of the machine which may be caused such as at the time when the rotation is stopped in the hydraulic excavator can be avoided.

The invention discloses a space engine-driven tail swing propelling plant which comprises a K-H-V type linear hypocycloid planetary gear train, a planetary plate external plate rotating device, a space ball accessory rod system, an engine-driven control mechanism and a tail fin direction control mechanism. The K-H-V type linear hypocycloid planetary gear train and the space ball accessory rod system comprehensively act to achieve swing / flapping of the tail of a robotic fish. The planetary plate external plate rotating device drives a planetary plate to rotate. The swing / flapping movement direction of a tail fin connection rod is changed by changing the position of a movement output point on a planet gear on a planet gear dividing circle. The engine-driven control mechanism drives a movable rack to rotate to achieve turning maneuver and rising and submerging of the robotic fish. The tail fin direction control mechanism controls the water striking angle of the tail fin to keep the tail fin at the optimal water striking angle. By means of the space engine-driven tail swing propelling plant, free switching between carangidae mode swimming and dolphin mode swimming is achieved, the mechanism principle and structural composition are simple, the tail fin movement is free of quick-return, and the space engine-driven tail swing propelling plant is suitable for being applied to power devices of automatic underwater crafts.

A pet toy is provided having a tubular, linearly elongated main body terminated at each end by a replaceable wing assembly. As the toy is flying through the air, the wings provides a visual ‘flapping’ like stimuli, similar to that of the wings of a bird. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

The invention discloses a stirring device for a gas-liquid mixing reactor with uniform mixing. The stirring device comprises a supporting seat, wherein the supporting seat is provided with a stirring paddle and a motor for driving the stirring paddle; the stirring paddle comprises a hollow shaft, a belt wheel, a pipeline rotating joint and a plurality of radial support pipes, wherein the hollow shaft is rotatably arranged on the supporting seat and is provided with a plurality of gas outlet holes; the belt wheel is fixed at the top of the hollow shaft and is linked with the motor; the pipeline rotating joint is arranged at the top end of the hollow shaft and is communicated with the inner part of the hollow shaft; the plurality of radial support pipes are fixed on the outer wall of the hollow shaft and are communicated with the inner part of the hollow shaft; and all the radial support pipes are respectively provided with one gas outlet hole. The stirring device disclosed by the invention has the advantages that in stirring, the stirring paddle can exhaust gas outwards and generates bubbles in surrounding liquid, the large bubbles under the flapping of stirring fins are crushed into small bubbles, the small bubbles stay in the liquid easily to facilitate gas-liquid mixing, and under the action of the stirring fins and the radial support pipes, the small bubbles can be easily diffused to all the parts.

A pet toy is provided having a tubular, linearly elongated main body terminated at each end by a replaceable wing assembly. As the toy is flying through the air, the wings provides a visual ‘flapping’ like stimuli, similar to that of the wings of a bird. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

The invention discloses a feather cracking simulation lift enhancement mechanism of a micro flapping aircraft. The feather cracking simulation lift enhancement mechanism comprises an aircraft body frame, wing rear-end pieces, a secondary flight feather II, a secondary flight feather I, a primary flight feather II, a primary flight feather I, four flexible feather hinges, a flexible wing hinge and wing front-end pieces, wherein all the parts of the flapping aircraft are arranged in an axial eudipleural manner; the wing front-end pieces are respectively mounted on two sides of the aircraft body frame and can do up-and-down flapping around the aircraft body frame under the traction of a flapping driving device; the wing front-end pieces are connected with the wing rear-end pieces through the flexible wing hinge; the secondary flight feather II, the secondary flight feather I, the primary flight feather II and the primary flight feather I are respectively connected with the wing rear-end pieces through the four flexible feather hinges. The sum of total rising forces of an upper flapping section and a lower flapping section is higher than that of a conventional flapping aircraft which does not simulate cracking; the feather cracking simulation lift enhancement mechanism has the advantages of high pneumatic efficiency, simple structure, high reliability and the like.

The invention discloses an interactive throw pillow robot based on wireless communication. The interactive throw pillow robot comprises a microcomputer, a wireless signal transceiver, a voice sensor, a heart rate sensor, a respiratory rate sensor, a voice module, a heartbeat simulation module and a respiration simulation module which are arranged in a throw pillow. The robot exchanges signals generated by each other's behaviors and body parameters including hug strength, heartbeats, voice, respiration, flapping and body temperature with a user through wireless signals and then transmits and converts the signals into corresponding behaviors and body parameters of the throw pillow on the opposite side, so that during communication of people, the transmission action is realized; body parameters and reaction of the user are fed back to the opposite side, and simultaneously, the body parameters and reaction of the opposite side are acquired through the robot of the user, so that relatively real interaction feel is provided; and besides, the functions of the robot exceed those of an ordinary throw pillow and simultaneously comprise an auxiliary sleeping function and an awakening function, so that the rest quality of the user is improved to a large extent.

A pet toy is provided having a tubular, linearly elongated main body terminated at each end by a replaceable wing assembly. As the toy is flying through the air, the wings provides a visual ‘flapping’ like stimuli, similar to that of the wings of a bird. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

A vent assembly for attachment to a fluid discharge conduit of the type connected to a clothes dryer, room exhaust fan, or the like is adapted to reduce or prevent the trapping of dirt or lint as well as flapping or vibration of the door in windy conditions. A mount having an opening is received on the conduit and a door is pivotally received by the mount. The door is operable for displacement with respect to the opening between an open position and a closed position when engaged by a fluid, such as air from a clothes dryer, flowing through the discharge conduit. A hood is pivotally mounted over the door and mount opening, and is operable for displacement with respect to the mount when engaged by the door and / or by fluid flowing through the discharge conduit.

The invention discloses a flapping mechanism of a double-cam type single freedom degree robot fish. The flapping mechanism provides a power for the robot fish and comprises a pedestal (1), a parallel four-rod component (2), a guide block component (3), a motor (5), a drive component (6) and a transmission component (7); the motor (5) is arranged on the upper cover plate (1a) of the pedestal (1) by a motor seat (5a); the four linear lead rails of the guide block component (3) are arranged at the four supporting seats of the pedestal (1); the drive component (6) is arranged in the arc rectangle hole of the guide block component (3); the transmission component (7) is arranged on the upper cover plate (1a), the connection plate (1b) and the lower bottom plate (1c) of the pedestal (1) by a transmission shaft A (7a) and a transmission shaft B (7b); the large arm (21) of the parallel four-rod component (2) is connected with the transmission shaft A (7a) of the transmission component (7); the connection rod B (24) of the parallel four-rod component (2) is connected with the transmission shaft A (7a) and the transmission shaft B (7b) of the transmission component (7); the small arm (22) of the parallel four-rod component (2) is connected with a tail fin (4). The flapping of the invention is realized by adopting the motor to drive two eccentric wheels to move, thereby driving two slide blocks to move straightly along the lead rails; the rotation of the parallel four-rod component is realized by the matching between the racks arranged on the slide blocks and the gears on the transmission component.

The present invention is referred to an electrically propelled display device with simulated hovering and / or flying patterns, comprising a driving unit; said driving unit includes a base, a central hollow body and a rotatable head. A power source is connected to the driving unit, a flexible support is attached to the rotatable head of the driving unit and a display pattern is attached to the flexible support. Said driving unit includes in the central hollow body an oscillator electronic circuit and an electric motor. Said oscillator electronic circuit is connected to the power source and to the electric motor which includes a driving motor shaft attached to the rotatable head. This device simulates the movement of some flying objects and aliforms, such as birds, bats, butterflies, dragonflies, fairies, or the like. The oscillator circuit sends pulses at a certain frequency to the motor, generating an intermittent, rotational movement. This movement is transferred to the wire, which, then accentuates and transmits this movement to the object. The ultimate effect is the combination of a rotational movement, and a movement that simulates the flapping of wings of some flying animals and fairies, or the movement of other aquatic or terrestrial animals. The speed and intensity of rotation and flapping change with the frequency and pulse width of the wave that the oscillator sends. The device may be used in decorative, educational, promotional, and entertainment applications. It may be used both, indoors and outdoors.