48 results about "Induced movement" patented technology

Disclosed are a method and apparatus that use an electric field for improved biological assays. The electric field is applied across a device having wells, which receive reactants, which carry a charge. The device thus uses a controllable voltage source between the first and second electrodes, which is controllable to provide a positive charge and a negative charge to a given electrode. By controlled use of the electric field charged species in a fluid in a fluid channel are directed into or out of the well by an electric field between the electrodes. The present method involves the transport of fluids, as in a microfluidic device, and the electric field-induced movement of reactive species according to various assay procedures, such as DNA sequencing, synthesis or the like.

The present invention discloses a method and system compensating for thermally induced motion of probe cards used in testing die on a wafer. A probe card incorporating temperature control devices to maintain a uniform temperature throughout the thickness of the probe card is disclosed. A probe card incorporating bi-material stiffening elements which respond to changes in temperature in such a way as to counteract thermally induced motion of the probe card is disclosed including rolling elements, slots and lubrication. Various means for allowing radial expansion of a probe card to prevent thermally induced motion of the probe card are also disclosed. A method for detecting thermally induced movement of the probe card and moving the wafer to compensate is also disclosed.

An implantable medical device comprises a hermetically sealed housing having a housing wall with an interior surface, and an ultrasonic acoustic transducer, the transducer comprising one or more piezoelectric discs fixed to the interior surface of the housing wall, such that the housing wall acts as a diaphragm in response to induced movement by the one or more piezoelectric material discs.

A directional tap detection algorithm and a single tri-axis accelerometer (10) are employed to extend the number of unique button less input commands available for a small mobile electronic device (12) such as a cell phone or a MP3 player. The algorithm analyzes acceleration data from the tri-axis accelerometer (10) to detect the direction and number of taps imparted to any of the six sides (14) of a housing (13) of the device (12), yielding 12 unique inputs. The algorithm employs a parameter referred to as the performance index (PI) to identify tap induced movements. The PI is determined by calculating the time derivative of each acceleration signal for each axis and then calculating the sum of the absolute values of the calculated acceleration derivatives. A tap is determined to have occurred if the sum exceeds a threshold value for a predetermined amount of time. If a second tap is detected within a predetermined time after the first tap, then a double tap is determined to have occurred.

Method and arrangement for providing and controlling operation of a dual sided opening roof mount cargo box (10) for a carrying vehicle. A dual sided opening roof mount cargo box (10) is provided and which has a lid portion (30) releasably hinge-connected at two lateral sides to a bottom portion (32) of the cargo box (10) for alternate pivotation at each of the two lateral sides between open and closed configurations. The bottom portion (32) is adapted to be mounted to a carrying vehicle and the lid portion (30) is manufactured from a semi-flexible material sufficiently pliable to permit two opposite end regions thereof to be at different relative distances from the bottom portion (32) of the cargo box (1) during transition between the open and closed configurations. A pair of spring-biased struts (50) are also provided, each operatively interposed between the lid portion (30) and the bottom portion (32) of the cargo box (10), and one each of the pair of spring-biased struts (50) being located at the two opposite end regions of the cargo box. An expansively directed force is imposed on the lid portion (30), utilizing the pair of spring-biased struts (50), across a substantial entirety of travel of the lid portion (30) during operator induced movement from the closed configuration to the open configuration and thereby assisting the operator to smoothly open the cargo box (10).

The method and the apparatus disclosed serve to acquire seismic induced movements. A coil and a permanent magnet are contained in an enclosure and the seismic movements induce a relative movement between said coil and said magnet. The current induced into the coil is appraised as a measure of said seismic movement. The position of the coil in relation to the permanent magnet is monitored by a position sensor. A closed loop control generates a current that is fed into the coil so that the coil settles at a given neutral position relative to the permanent magnet.

The present invention relates to a wave power generator, and more particularly, to a wave power generator that has comparatively high energy conversion efficiency, so that it can induce active investment and research and development to overcome uncertainties about the natural environment, and which can enhance practicability and value as a clean energy source, especially by virtue of the improved return on investment thereof. For this purpose, the wave power generator of the present invention is characterized in that is comprises: a plurality of rafts arranged on a water surface to move freely with the movement of waves; a plurality of connectors, connecting the plurality of rafts to each other, for performing the conversion of kinetic energy by converting the wave-induced movement of one raft into an amplified lever movement on an adjacent raft; a plurality of generators installed on the plurality of rafts to generate electricity; and an energy-converting unit, connected to the plurality of connectors and to the plurality of generators, for converting the kinetic energy from the plurality of connectors into rotational energy for driving the plurality of generators.

A forced reciprocating movement device of ocean structure in the technical field of ocean engineering includes: a base, a straight track, a sliding block, a driving motor and a speed reducer, whereinthe base is parallelly fixed on the bottom of a trailer, the straight track is fixedly arranged on the lower surface of the base, and the sliding block moves on the straight track by means of pinion and rack and is provided with the driving motor and a planetary speed reducer. The device can fix the ocean structure on the bottom of the sliding block, is driven to do reciprocating movement on the straight track by the driving motor and simulate the phenomena of vortex-induced vibration and vortex-induced movement, and is simple in structure and high in automation degree.

A large decorative flag mount is formed with a tubular interengaged support construction to provide sufficient stiffness with relative lightness and inhibition of rotation between the tubular support sections by providing a single axial groove pair to the interengaging surfaces of one or more of the tubular sections before interengagement of two sections to inhibit mutual rotation and wherein the invention is useful in preventing undesirable relative rotational wind induced movement between the tubular sections resulting in incorrect orientation of a flag display, and also including a handle and reinforcing member to aid in lifting the assembled mounting.

The invention discloses a deep-sea SPAR floating-type draught fan fatigue damage analysis method taking a vortex-induced effect into account. The method includes the following steps of (1) analyzing avortex-induced movement phenomenon of a SPAR-type floating-type draught fan, and obtaining the overall force characteristics, movement trails and response frequency of the SPAR-type floating-type draught fan; (2) on the basis of FAST software, under a working sea condition and a survival sea condition, analyzing a movement response time interval of the SPAR-type floating-type draught fan and theforce condition of tied cables under the combined action of a wind load, a wave load and a current load; (3) according to a Miner linear fatigue damage superposition theory, S-N curves and a rain-flowcounting method, compiling an MATLAB program, conducting fatigue damage analysis under the action of a vortex-induced load and wave load of the draught fan separately, and correspondingly obtaining the total fatigue damage of the tied cables within the design life to provide an effective settlement strategy for accurately evaluating power response of the floating-type draught fan and the fatiguedamage of the tied cables.

A wall panel-ceiling engagement device is designed to couple a wall panel to a ceiling. The engagement device, when engaged with the ceiling, holds the wall panel stationary without any fasteners, braces or other securing members that penetrate into the ceiling. The engagement device includes a pair of wall extensions secured to opposite sides of the wall panel and that contain a sound and/or attenuating material, such as a foam material, therebetween. Corner braces are used to join adjacent wall-panels to one another. The corner braces also function to allow the wall panels to sway as a collective and connected unit during seismic events.

A system for processing video signal information to identify those pixels associated with a moving object in the presence of platform and/or sensor pointing induced motion. Frame differencing with self-adjusting noise thresholds is implemented to detect pixels associated with objects that are in motion with respect to the background and a field-by-field motion pixel map of pixels associated with the moving object is generated. A two (2) step pixel grouping process is used where the first pass runs in real-time as the video signal is received and writes the links between pixel groups into entries in a table. The second pass operates on a smaller set of link data and only needs to reorder entries in the table.

An assembly for measuring in vivo biomechanical properties of skin, comprising a testing device, said testing device comprising; a first pad attachable to the skin a second pad attachable to the skin, at a known distance from the first pad; said attachability of the pads to the skin to prevent relative movement between the respective pad and the skin to which it is attached; a forcing means for applying a force to the first pad, whilst said pads are attached to the skin, along a first axis connecting the first and second pad, to induce a corresponding relative movement between the pads due to deformation of the skin between said pads; a force measurement device for measuring the applied force, and; a displacement measurement device for measuring the corresponding induced movement.

A generator moving through a medium has a contacting surface structure relative to a frame with a spring coupled between the two. The contacting surface structure also has an electrogenerative portion coupled to the contacting surface structure and the frame, such as a piezoelectric or electromagnetic structure, although other types of structures are known within the art. The movement of the frame through the medium exerts forces upon the contacting surface structure which causes contacting surface structure movement relative to the base structure through the electrogenerative portion. The spring provides a force upon the contacting surface structure in response to the force from the fluid flow.