253 results about "Large deflection" patented technology

A MEMS-fabricated microvacuum pump assembly is provided. The pump assembly is designed to operate in air and can be easily integrated into MEMS-fabricated microfluidic systems. The pump assembly includes a series of pumping cavities with electrostatically-actuated membranes interconnected by electrostatically-actuated microvalves. A large deflection electrostatic actuator has a curved fixed drive electrode and a flat movable polymer electrode. The curved electrodes are fabricated by buckling the electrode out-of-plane using compressive stress, and the large deflection parallel-plane electrostatic actuators are formed by using the curved electrode. The curved electrode allows the movable electrode to travel over larger distances than is possible using a flat electrode, with lower voltage. The movable electrode is a flat parylene membrane that is placed on top of the curved electrode using a wafer-level transfer and parylene bonding process. Using this approach, large out-of-plane deflection of the parylene membrane is achieved using a voltage smaller than is achievable using flat parallel-plate electrodes.

The invention discloses an outer rotor magnetic levitation conical spherical gyro flywheel. The outer rotor magnetic levitation conical spherical gyro flywheel mainly comprises a static part and a rotor part, wherein the static part comprises an upper sealing cover, a middle gyro case, a lower sealing cover, a sealing ring, an upper gyro case, a lower gyro case, a motor component stator, an Lorentz force magnetic bearing stator, an axial displacement sensor component, a radial displacement sensor component, a mandrel, a protective bearing and a radial conical spherical magnetic bearing stator component. The rotor part comprises a gyro outer turntable component and a protective bearing cover. The outer rotor magnetic levitation conical spherical gyro flywheel disclosed by the invention adopts a spherical shell-shaped magnetic air gap structure and has the advantages of large inertia, easy control, large deflection angle, high torque accuracy and the like.

A bi-directional system for actively deflecting the distal tip of a catheter includes a reconfigurable tube that is positioned proximal to the catheter's distal tip. The tube is formed with slits that are arranged to allow the tube to be transformed from a relaxed, cylindrical configuration to a plurality of deflected configurations. First and second pull wires are provided, with each wire having a respective distal end that is attached to the distal end of the tube. Each wire extends to a catheter handle where it is attached to a respective reel. The reels can be rotated, back and forth, to selectively deflect or relax the tube. To ensure a smooth recovery after a relatively large deflection, a mechanism is disclosed for delaying an application of tension on one of the pull wires until at least a portion of any tension on the other pull wire is released.

The invention relates to an angle-changeable transmission device which comprises a power output shaft, a power input shaft, a fixing rack, a swing rack and a power transmission device. The power input shaft transmits power to the power output shaft through the power transmission device to drive wheels to rotate. The transmission device can transmit power and achieve the larger deflection angle while transmitting power, and is reliable in operation. Meanwhile, the invention further provides a vehicle chassis provided with the angle-changeable transmission device. The vehicle chassis can achieve the functions of transverse traveling, four-wheel steering and on-site rotating and can improve high-speed stability and low-speed maneuverability of an automobile. The invention further provides a method for controlling the vehicle chassis to be steered under different conditions.

The invention relates to micromechanical elements which can be deflected, and which can preferably be deflected translationally, and possibly also in an oscillatory form. In comparison to known solutions, the object of the invention is to allow larger deflections, with better resistance at the same time to side forces and torques. In this case, suspension by at least one spring system is provided on elements according to the invention. Levers which are connected in an articulated manner to torsion spring elements are provided on spring systems. Torsion spring elements of a spring system are aligned on a common axis and / or on a plurality of axes which are aligned parallel to one another, and at least one torsion spring element is firmly clamped in.

The invention discloses a large-deflection self-adaptive seal for low-speed equipment. The large-deflection self-adaption seal for the low-speed equipment comprises a shaft sleeve, a seal cavity, a connecting plate and a static ring and a moving ring which are arranged in a cavity body of the seal cavity; the shaft sleeve penetrates through the seal cavity, the static ring and the moving ring are arranged on the shaft sleeve in a sleeving mode, the connecting plate is fixedly connected with the shaft sleeve, and the moving ring is fixedly installed on the connecting plate; the static ring comprises a connecting end and a seal end which are connected by adopting a flexible structure, the static ring is fixedly connected with the seal cavity through the connecting end, a static ring seal ring is arranged between the seal end and the shaft sleeve, and the seal end is provided with an arc-shaped seal end face; the moving ring is provided with an arc-shaped seal end face matched with the seal end of the static ring, the static ring and the moving ring are cooperatively connected through the seal end faces, the seal end of the static ring is provided with a jacking mechanism, and the jacking mechanism applies jacking force to the seal end to enable the seal end face of the static ring and the seal end face of the moving ring to be closely matched. The seal adopts arrangement of the arc-shaped seal end faces and the flexible connecting structure and solves the leakage problem caused by rotating shaft eccentricity.

An improved insulation displacement terminal (IDT) includes opposed spaced fingers having outer edges with first and second abutment sections adjacent the ends of the outer edges. A resilient spring-like mid-section in the finger between the abutment sections applies a generally normal force to a wire captured between the inner edges of opposed fingers of the IDT. The resilient spring-like mid-section of each finger may be provided by narrowing the width of each finger between the abutment sections such as by recessing the outer edges from the outer edges of the abutment sections or by providing slots or openings in the mid-section of the fingers. Corners of inner edges of the fingers are smoother and inner edges are generally planar to provide a large contact area between the fingers and a wire disposed therebetween. The IDT is mounted within a housing to provide an insulation displacement connector (IDC).

The invention discloses a dried noodle bending fracture rate measuring method based on axial amount of compression and a goniophotometer. First dried noodles in certain number are extracted, cut into given length, separatively fixed between a static supporting baffle and a movable supporting baffle. Then a motor is started, for driving a stepless speed change device and a nut screw, the movable supporting baffle is pushed to cause the dried noodles to generate axial compression unstable bending; the size of axial amount of compression is read by a horizontal type electronic digital staff gauge. The dried noodle are broken when the axial amount of compression of the movable supporting baffle does not reach the given axial amount of compression, namely a bent fracture strip; percent of the number of bent fracture strip to the number of extracted ones is the dried noodle bending fracture rate. According to the invention, objective measurement is realized through mechanics of materials pressure lever stability principle and large-deflection theory and stress equivalence principle, the bending fracture rate is correctly measured, measurement is more scientific and precise.

The invention relates to a two-dimensional large-angle rapid deflection reflector. The reflector comprises a reflecting mirror assembly, a supporting assembly, a driving assembly, a sensor assembly and a base. The supporting assembly is a self-made ball bearing and can freely rotate around the sphere center of the supporting assembly; and the supporting assembly is pre-tightened through a conical spiral spring, so that the supporting assembly can be kept at an initial zero angle position without the driving of an external force. According to the driving assembly, four voice coil motors are adopted as driving components; the sphere centers of the voice coil motors are overlapped with the sphere center of the supporting assembly; the voice coil motors push the supporting assembly to perform two-dimensional rotation; and gaps between the magnetic steel and coils of the voice coil motors are always constant, and therefore, the magnetic steel will not collide with the coils, and relatively large deflection angles can be generated. The sphere centers of the supporting assembly and the driving assembly are located on the reflection surface of a plane reflecting mirror, so that the two mutually perpendicular deflection axes of the reflecting mirror are located on the surface of the reflecting mirror. In the fast deflecting process of the reflecting mirror, the translational movement of a reflection light beam caused by a condition that the deflection axes of a reflecting mirror are not overlapped with the surface of the reflecting mirror can be eliminated, and the control precision of the light beam is improved.

An array of individually controllable elements for a lithographic apparatus comprise reflectors that can be actuated by an actuator and are biased to return to a given position by a force that varies non-linearly with the displacement of the reflector from that position.