66 results about "Out of plane motion" patented technology

The present invention provides a fabrication process that integrates high-aspect-ratio silicon structures with polysilicon surface micromachined structures. In some embodiments the process includes forming an oxide block by etching a plurality of trenches to leave a plurality of vertical-walled silicon structures standing on the substrate, thermally and substantially completely oxidizing the vertical-walled silicon structures, and substantially filling spaces between the oxidized vertical-walled silicon structures with an oxide of silicon to form the oxide block. The process retains not only the high-aspect-ratio silicon structures possible with deep reactive ion etching (DRIE) but also the design flexibility of polysilicon surface micromachining. Using this process, polysilicon platforms have been fabricated, which are actuated by high-aspect-ratio combdrives for many applications such as x-y-z stages and scanning devices. The actuators include an asymmetric combdrive that actuates in torsional/out-of-plane motions, and a high-aspect-ratio combdrive that drives in translational motion.

A method corrects track misregistration attributable to out-of-plane motions of a rotating disk in a hard disk drive, and includes the steps of measuring a base plate-roll-bias angle between the rotating data storage disk and the head arm with a precision measuring device, and connecting the head arm and load beam at a roll-bias angle selected to minimize track misregistration attributable to the roll-bias. A number of connection arrangements and structures are presented in order to achieve the desired reduction in track misregistration.

Disclosed is a system and method for computing out of plane motion between two ultrasound images. The method identifies regions of fully developed speckle that are common to the two images, computes a correlation coefficient corresponding to the two fully developed speckle image regions, and then computing an elevation distance corresponding to the correlation coefficient. The method exploits the measurable and characterizable relation between inter-image correlation and elevation distance, which may be determined from fully developed speckle regions. The method also identifies regions within the ultrasound images related to structure (e.g., vein or bone), and disregards these regions.

A movable system, such as a computer storage device, having a frame, a mover configured to move relative to the frame, and a mechanical suspension operatively coupled between the frame and mover. The mechanical suspension is configured to permit planar movement of the mover while substantially preventing out-of-plane movement, and includes a first flexure configured to flex in response to movement of the mover in a first direction relative to the frame, and a second flexure configured to flex in response to relative movement occurring in a second direction.

A prosthetic tricuspid remodeling annuloplasty ring for use in tricuspid valve repairs to provide annular support after reconstructive valve surgery. The ring maintains an optimal annular dimension to prevent excessive dilatation of the natural valve annulus while adapting to the dynamic motion of the tricuspid annulus during the cardiac cycle. An exemplary ring features a waveform contour and may be constructed of a titanium core having a varying cross-section for selective flexibility for good Z-axis or out-of plane movement. The “waveform” contour and selective flexibility of the different segments of this ring are designed to adapt to the complex motion of the annulus. This reduces the stress on the anatomical structures and therefore minimizes the risk of arrhythmia and ring dehiscence.

A microelectromechanical device that comprises a first structural layer, and a movable mass suspended to a primary out-of plane motion relative the first structural layer. A cantilever motion limiter structure is etched into the movable mass, and a first stopper element is arranged on the first structural layer, opposite to the cantilever motion limiter structure. Improved mechanical robustness is achieved with optimal use of element space.

The invention discloses a device for detecting an in-plane error in a micro/nano device out-of-plane motion test and a compensating method. The device has a control and image processing unit and a phase shift micro interfering system which is connected with the control and image processing unit, wherein the phase shift micro interfering system comprises a vibration isolating table, a three-dimensional micro motion probe table, a tested micro/nano device, a micro interferometer, a nano positioning instrument and a microscope, which are arranged in turn, and a flash lighting controller, a high-pressure amplifier driver, an arbitrary waveform generator, a charged coupled device (CCD) camera, and an image acquisition card; the input end of the arbitrary waveform generator is connected with the control and image processing unit, and the output end of the arbitrary waveform generator is connected with the flash lighting controller and the high-pressure amplifier driver; the CCD camera is connected with a microscope; and the image acquisition card is connected with the control and image processing unit and the CCD camera respectively. The method comprises: acquiring the motion image of the tested micro/nano device; testing in-plane displacement; testing out-of-plane motion; and performing two-phase unwrapping of a time axis and a spatial axis. The invention is easy to use with high reliability.

A shoulder belt clip for restraining a child in a child safety seats or carrier. In a preferred embodiment, the shoulder belt clip is comprised of a plate made of flexible material and with two horizontal slots arranged in parallel on one side and a U-shaped opening on the other. The two straight slots maintain attachment to, but allow the clip to slide vertically on, the webbing that runs over the left shoulder of the child. The U-shaped opening forms a tab that admits entry of the webbing that runs over the right shoulder of the child and holds it until release is desired by the parent. A narrowing of the U-shaped opening causes compression of the webbing between the tab and the opening and thereby prevents slippage of the clip vertically on the webbing that runs over the left shoulder of the child. A lock comprised of a spring-loaded slider is fixed between and parallel to the two straight slots blocks the out-of-plane motion of the tab in the direction that would release the webbing, and also by its positioning prevents sliding the webbing laterally out the open end of the U-shaped opening. When release is desired by the parent, the lock slider is pushed back against the force of the spring and the flexible tab is pushed out-of-plane with respect to the body of the clip. This allows quick release of the webbing that runs over the right shoulder of the child.

The invention discloses a micromechanical hair flow velocity sensor based on weak coupling resonators. Out-of-plane stereo hair is adhered at a geometric center of a middle layer micro-silicon sensor,a structure of the middle layer micro-silicon sensor is composed of a mass block base, four same weak coupling resonator groups and four same out-of-plane motorial inhibition elastic structures; foursame weak coupling resonator groups are symmetrically arranged an upper direction, a lower direction, a left direction and a right direction of the mass block base; the weak coupling resonator groupsare connected with the mass block base through input straight girders of secondary force amplification levers; four same out-of-plane motorial inhibition elastic structures are symmetrically distributed at a left upper direction, a right upper direction a right lower direction and a left lower direction of the mass block base, and the out-of-plane motorial inhibition elastic structures are connected with the mass block base through the out-of-plane motorial inhibition elastic U-shaped girders. By arranging the weak coupling resonator groups and the out-of-plane motorial inhibition elastic structures in a symmetric structure, the biaxial sensitivity of in-plane flow velocity is realized.

A microelectromechanical device has a mobile mass that undergoes a movement, in particular a spurious movement, in a first direction in response to an external event; the device moreover has a stopper structure configured so as to stop said spurious movement. In particular, a stopper element is fixedly coupled to the mobile mass and is configured so as to abut against a stopper mass in response to the spurious movement, thereby stopping it. In detail, the stopper element is arranged on the opposite side of the stopper mass with respect to a direction of the spurious movement, protrudes from the space occupied by the mobile mass and extends in the space occupied by the stopper mass, in the first direction.

The invention provides a comb tooth capacitor of a micromachine, and relates to the field of micro-electronic machines. The capacitor comprises a fixed comb tooth electrode and a movable comb tooth electrode, wherein the fixed comb tooth electrode and the movable comb tooth electrode overlapped to form a decoupling comb tooth capacitor; and when the movable comb tooth electrode and the fixed combtooth electrode oppositely carry out out-of-plane motion under the action of external force, the capacitance for the comb tooth capacitor of the micromachine does not changed. The comb tooth capacitor of the capacitor is low in cost and simple in structure, can effectively solve the problem of mode coupling for an actuator of a micromachine gyroscope and the problem of intersecting axle sensitivity of the micromachine gyroscope and an acceleration transducer.

A MEMS device having a spring structure formed by two flexible beams attached between a substrate and a movable bar. When non-end sections of the beams are pulled in opposite directions, the beam ends attached to the movable bar pull that bar toward the substrate, thereby transforming in-plane motion of the non-end sections into out-of-plane motion of the movable bar. When the non-end sections are displaced symmetrically, the movable bar translates toward the substrate. Alternatively, when the non-end sections are displaced non-symmetrically, the movable bar rotates with respect to the substrate. In one embodiment, each flexible beam is attached to a comb-shaped portion of a motion actuator, which has two such portions, each portion interleaved with the other portion and adapted to move with respect to the substrate and that other portion. When a voltage differential is applied between the portions, they move substantially parallel to the substrate, thereby deforming the beams and translating/rotating the movable bar.

The invention relates to a research method for marine deepwater risers, and particularly relates to a method for analyzing the out-of-plane motion of a steel catenary riser. By using the method disclosed by the invention, an improvement on the existing technique for analyzing the out-of-plane motion of a steel catenary riser is performed, the rigid body motion of the out-of-plane motion of a steel catenary riser is taken into consideration, an analytical mode of the out-of-plane motion of a steel catenary riser is built, and the rigid body rotation of the out-of-plane motion of a steel catenary riser is added, so that the analysis on the out-of-plane motion of a steel catenary riser is more consonant with an actual motion state.

The disclosure relates to a microelectromechanical device where the device structure includes a rotating mass structure and a linear mass structure. The rotating mass structure is formed of two rotating mass parts elastically coupled to the support through one or more springs that enable rotary motion of each of the rotating mass parts about respective rotary axes that extend parallel to each other along a first in-plane direction (IP1). The linear mass structure includes at least one elongate rigid body that extends in a second in-plane direction (IP2). One end of the linear mass structure is coupled to the first rotating mass part and the other end of the linear mass structure is coupled to the second rotating mass part such that rotary motions of the first and second masses result into linear motion of the linear mass structure in the out-of-plane direction (OP).

A micromechanical device capable of providing out-of-plane motion and force generation in response to an in-plane strain applied to the device is provided. Embodiments of the present invention comprise one or more islands that are operatively coupled with one or more hinges. The hinges are operative for inducing rotation of the islands when a lateral strain is applied to the structure. In some embodiments, the hinges are also electrically conductive such that they enable electrical communication between the one or more islands and devices external to the structure. Some embodiments of the present invention are particularly well suited for use in biological applications. Some devices in accordance with the present invention are fabricated using conventional planar processes, such as flex-circuit fabrication techniques.