2677results about How to "Reduce displacement" patented technology

Small, rugged scanners micro-fabricated from commercial optical fibers to form waveguides or other structures. The scanning waveguide has a distal portion on which is formed a non-linear taper with a diameter that decreases toward a distal end. Optionally, a hinge portion having a reduced diameter can be formed in the distal portion, improving the scanning properties of the waveguide. A micro-lens can be integrally formed at the distal tip of the waveguide with either a droplet of an optical adhesive, or by using an energy beam to melt the material of the waveguide to form a droplet. The droplet is shaped with an externally applied force. When mechanically driven in vibratory resonance, the tip of the optical waveguides moves in linear or two-dimensional scan patterns of relatively high amplitude and frequency, and large field of view. The scanner can be used either for image acquisition or image display.

An object of the present invention is to execute an optimum control of vibrations due to a driver's operation of an accelerator pedal, steering wheel and brake pedal. The operation instructions are inputted into a vibration calculating means (kinetic model) comprising a vehicle body model, suspension model and tire model. Conventional kinetic model controlled the suspension in order to suppress the vehicle body vibration. However, in the kinetic model of the present invention, the tire vibration due to a change in the engine output is first absorbed by the suspension, whereby a residual vibration which was not be absorbed yet by the suspension is transferred to the vehicle body. The operation inputs are compensated by the three feed-back loops between the outputs of the above-mentioned three portions and input of the tire portion, giving the highest priority on the vehicle body model.

A surgical assistance system for operating on biological tissue using a surgical tool attached to an arm of an automatically-controlled surgical instrument so that an optimal feed rate of the tool is calculated and outputted to the surgical instrument, the system including: a device for storing and voxelizing medical image data obtained from a biological tissue subject to surgery; a device for setting an operative location based on the shape of the biological tissue; a device for calculating a tool path along which the tool travels to perform surgery at an operative location; a device for determining the region of interference between the tool and the voxels; a device for determining the hardness of the biological tissue in the interference region; a device for calculating an optimal tool feed rate corresponding to the hardness; and a device for outputting the feed rate obtained by the calculations to the surgical instrument.

A PRP separator-concentrator comprising a housing, a separation assembly, and a concentration assembly. The concentration assembly has a concentration sump. An axially concentric rigid stationary outlet tube is secured to the housing and extends through the separation assembly to the sump. The separation assembly is attached to and positioned above the concentration assembly to form a combined separator-concentrator assemblage that is rotatable about the outlet tube. The separation assembly includes a separation chamber lined with a depth filter having pores and passageways that are sized to receive and entrap erythrocytes during centrifuging. The concentration chamber has a floor for supporting desiccated beads and a wall with at least one opening closed with a screen. The concentrator can have a distribution of upright screen supports, the upright screen supports having an inner surface and an outer surface, the cylindrical screen being supported on the outer surface of the upright screen supports. A stationary bead rake can be secured to the stationary tube and extend outward therefrom, the rake having distal ends that are spaced at a distance from the upright screen supports. The rake can comprise a longitudinal body, the center of which is secured to the rigid outlet tube. The separator-concentrator includes a valve assembly connecting the separation chamber and the concentration chamber. PRP concentrate is produced by contacting PRP with desiccated beads while the beads are stirred with a stationary rake, and rotating the concentration chamber at centrifugal speeds to separate PRP concentrate from the beads.

The disclosure provides fusion implants, instruments and methods for insertion of the implants between opposing vertebral bodies to facilitate stabilization or arthrodesis of an intervertebral joint. A cross section through the longitudinal dimension of the implant is substantially configured in an “I” shape. In addition to other features, the implants of the invention provide a reduced contact surface area with the interior surface of a bore formed for receiving the implant.

An implantable medical lead is provided with a distal guidewire extension. A flexible distal guidewire extension, which may take the form of a helically wound wire around a tapered core, extends from the distal end of a lead body. The extension may exit a tip electrode, which may be a generally rounded electrode or an active fixation electrode. The distal guidewire extension is preferably insulated, but may be provided with an uninsulated segment for serving as an electrode.

The invention relates to a magnetic fluid damping device, which is suitable for damping long objects in spacecrafts and solves the problem of the damping of the long objects in the spacecrafts. The device comprises a non-magnetic shell (2), magnetic liquid (3), a permanent magnet (4), a nut (5), an end cover (6), a bolt (7), a screw (9), a sealing gasket (10) and an O-shaped seal ring (11). The parts are connected in a way that: the permanent magnet (4) is arranged in the non-magnetic shell (2); the end cover (6) with the O-shaped seal ring (11) is fixed to one end of the non-magnetic shell (2) by the bolt (7) and the nut (5); the magnetic liquid (3) is filled into the non-magnetic shell (2) by a threaded hole (8); and the non-magnetic shell (2) is sealed by the screw (9) and the sealing gasket (10). The device is sensitive to inertia force, can perform damping on the vibration with the characteristics of low frequency, small displacement and low accelerated speed, and has long service life and simple assembly method.

The invention discloses a power control system of an excavator. The power control system is characterized by comprising a pressure sensor, a main pump displacement regulator, a revolution speed sensor and a loading calculation module, wherein the pressure sensor and the main pump displacement regulator are arranged on the outlet of a main pump, the revolution speed sensor is arranged on an engine, and the loading calculation module is arranged in the main controller; the pressure sensor, the revolution speed sensor and the main pump displacement regulator are respectively connected with the main controller and output engine revolution speed, throttle position and main pump displacement after being calculated by the loading calculation module to respectively control an actuating mechanism. The method is as follows: low load is a positive flow control mode; high load: a. when engine revolution speed is more than or equal to no-load speed* (1-7%), controlling by a constant power mode; and b. when the engine revolution speed is less than no-load speed* (1-7%), controlling by a limiting power mode. The invention controls by constant power comprehensive limiting power, gives consideration to the power output of a dynamic system on the premise of ensuring excavating force, dynamically adjusts the matching between the practical power of a hydraulic system and requirements, lowers power loss and reduces oil loss.

The application concerns an injection device for apportioning set doses of a drug from a reservoir (40) to a subject. The injection device comprises a housing having an interior thread (101,112) formed as an outwardly pointing thread (101,112) carried on an upstanding tower centrally located in the pen shaped device. This outwardly pointing thread (101,112) forms a first thread connection with the interior thread of the rotatable scale drum (90). The injection device further comprises a driver (70) for moving the piston rod (120) forward when moved axially. The driver (70) operates the piston rod (120) through a second thread connection having a pitch different than the first thread connection.

PCT No. PCT/AU97/00614 Sec. 371 Date Mar. 18, 1999 Sec. 102(e) Date Mar. 18, 1999 PCT Filed Sep. 18, 1997 PCT Pub. No. WO98/12102 PCT Pub. Date Mar. 26, 1998A guide assembly for a bicycle chain is fitted to the crank or front chain ring and remains in position as the chain ring rotates. The assembly has chain guide assemblies to stop the chain from coming off the chain ring. By not having the assembly attached to the frame, but instead to the chain ring or crank, the assembly can be used on a large number of different makes of bicycles.

A flip-chip mounting apparatus includes a variable-shape mirror 16 for receiving a laser beam emitted from a laser beam oscillating source 12, a sensor 18 for sensing a reflected laser beam from the variable-shape mirror 16, and a controlling portion 20 for controlling the variable-shape mirror 16 by comparing a sensed signal input from the sensor 18 with previously input threshold values such that an intensity distribution of the reflected laser beam corresponds to a distribution of bumps 37 on a semiconductor chip 36, whereby when the reflected laser beam from the variable-shape mirror 16 is irradiated onto the semiconductor chip 36 through a beam expander 34 and a pushing body 40, a beam shape of the reflected laser beam matches with an outer shape of the semiconductor chip 36 and also joined portions are heated concentratedly.

A system for adjusting a height of an automotive vehicle having four wheels, the system comprising: four height adjusters provided for the respective wheels; and a controller controlling an operation of each height adjuster so as to adjust the vehicle height at each of four positions corresponding to the wheels, the controller including: an initial control portion controlling the operation of at least one of the height adjusters such that the vehicle height is initially changed at at least two of the four positions, in a first direction which is one of an upward direction and a downward direction, and then in a second direction which is the other direction; and a final control portion controlling the operation of all the height adjusters after the control by the initial control portion, such that the vehicle height is changed at all the four positions to respective target levels.

Exemplary embodiments provide a piezoelectric resonator element, to reduce the reaching of an attenuating vibration of a main vibration to a marginal edge of the piezoelectric resonator element, as well as to stabilize an oscillating-frequency without worsening the CI value, nor inducing another vibration mode. The piezoelectric resonator element having a thickness shear vibration as a main vibration, a first groove and a second groove formed so as to surround the center part of a main surface, and the thickness at the first groove and the second groove structured to be between 70% to 96%, inclusive, of the thickness of the center part of the resonator element.

Various embodiments include a multi-color micro-LED array light source that enables well-overlapped light beams of different colors. The multi-color micro-LED array light source includes a thermally conductive substrate and multiple arrays of different color micro-LEDs integrated on the thermally conductive substrate. The micro-LEDs within each array are electrically connected so that they can all be driven in unison. The multi-color array light source also includes a controller that is electrically coupled to and that drives the arrays of micro-LEDs. The controller drives the micro-LEDs in a manner that produces an output light distribution with a spatial wavelength and angular distribution that is suitable for use as a light source.