70results about How to "Maintain symmetry" patented technology

A vibrating inertial rate sensor has sense elements that operate on axes that are rotationally skewed from a node reference axis, enabling both a rate sense and a drive sense determination. Alternatively, the skew may be applied to rotationally offset the drive elements from antinode reference axes to affect active torquing of the gyroscope. The skewed sensing scheme may be applied to vibratory systems having one or more node axes. The skewed drive scheme may be applied to vibratory systems having two or more node axes to affect active torquing.

An intermediate telephoto lens system includes a positive front lens group, a variable-aperture diaphragm, and a positive rear lens group, in this order from the object.

The positive front lens group includes a positive first lens element L1, a positive second lens element L2 and a negative third lens element L3, in this order from the object.

The positive rear lens group includes cemented lens elements having a negative fourth lens element L4 and a positive fifth lens element L5, and a positive sixth lens element L6, in this order from the object.

The intermediate telephoto lens system satisfies the following condition:

2.0<f/f₁₂<3.0   (1)

• • wherein
  • f designates the focal length of the entire intermediate telephoto lens system; and
  • f₁₂ designates the combined focal length of the positive first lens element L1 and the positive second lens element L2.

The invention relates to a two-stage laser system well fit for semiconductor aligners, which is reduced in terms of spatial coherence while taking advantage of the high stability, high output efficiency and fine line width of the MOPO mode. The two-stage laser system for aligners comprises an oscillation-stage laser (50) and an amplification-stage laser (60). Oscillation laser light having divergence is used as the oscillation-stage laser (50), and the amplification-stage laser (60) comprises a Fabry-Perot etalon resonator made up of an input side mirror (1) and an output side mirror (2). The resonator is configured as a stable resonator.

A vibrating inertial rate sensor has operational elements that define axes that are rotationally offset or “skewed” from a node or anti-node reference axis. The skew may be relative to separate node or anti-node reference axes, or take the form of an element that is “split” about the same node axis. Both the drive signal and the sense signal may be resolved from a common set of sensing elements. The drive elements may also operate on a skewed axis angle to rotationally offset the vibration pattern to affect active torquing of the gyroscope. Skewed drive elements may be combined with skewed or split elements on the same device. The skewed sensing scheme may be applied to vibratory systems having one or more node axes. The skewed drive scheme may be applied to vibratory systems having two or more node axes to affect active torquing.

A brachytherapy system for treating metastases on and around a patient's spinous process is provided. The device generally includes a catheter member having a proximal portion, a distal portion, and at least one lumen extending therethrough. The distal portion of the catheter member includes first and second branch members that are adapted to be positioned on opposed sides of a patient's spinous process. The device further includes first and second elongate anchoring elements disposed on the first and second branch members, and optionally can include at least one centering mechanism disposed within each of the first and second anchoring elements. The first and second anchoring elements are preferably adapted to be positioned between a spinous process and transverse process of at least one vertebral body, and to extend along a length of a patient's spinal column, such that the first and second anchoring elements, when expanded, engage and anchor the first and second branch members between the spinous process and transverse process of at least one vertebral body.

A substantially symmetric inductor comprising a plurality of windings, at least one conductor crossover, and a peripheral conductor disposed at the periphery of the plurality of windings, the plurality of windings having a generally symmetric shape, each of the plurality of windings having a center and being of a different size from other ones of the plurality of windings, the peripheral conductor being generally symmetric and having a center, the plurality of windings and the peripheral conductor being substantially concentric, the conductor crossovers being disposed such that the symmetry of the inductor in substantially preserved. A method of winding an inductor such that the inductor is substantially symmetric about a center of the inductor, whereby signal degradation due to asymmetry of the inductor is substantially minimized.

The invention discloses a satellite platform attitude maneuver method capable of achieving an ultrahigh-resolution sliding spotlight mode of satellite-borne SAR. The method comprises the following steps: firstly determining a whole sliding spotlight imaging time start-stop range according to observation scene position and satellite platform orbit information, wherein the time start-stop range is a satellite platform attitude maneuver time range; secondly determining a central rotating point of a whole attitude maneuver period by using SAR antenna parameters, resolution indexes and sub-satellite point view angle of the scene center; and finally determining a three-axis direction unit vector of a satellite platform in the maneuver period according to the rotating central point position and the platform attitude maneuver time range so as to obtain the accurate attitude maneuver mode of the satellite platform in the whole sliding spotlight imaging period and ensure that the satellite platform attitude maneuver mode reaches corresponding imaging indexes and finally required satellite-borne SAR image effect.

A cooking appliance is disclosed. The cooking appliance includes a cabinet defining the external appearance of the cooking appliance, a cooking unit provided in the cabinet for performing cooking using a heat source, a panel having a through hole, a heat source control unit provided at the rear of the panel, the heat source control unit having a shaft extending to the front of the panel through the through hole, a knob provided at the front of the panel in a state of being connected to the shaft for rotating the shaft according to user's manipulation, a knob ring provided between the knob and the panel for receiving at least a portion of the knob, and a knob ring holder coupled to the knob ring at the rear of the panel for allowing the knob ring to move on a front surface of the panel in a radial direction of the knob ring.

The invention relates to a trimmer for a tea garden, and belongs to the technical field of agricultural machinery. The trimmer comprises a power assembly and a cutter assembly, wherein two eccentric wheels in the shell of the cutter assembly are in drive connection with two staggered shave-shaped blades respectively through connecting rods; the blades and a tool storage extending out of the shell form a moving pair; a left blade assembly and a right blade assembly are arranged, the upper ends of the left blade assembly and the right blade assembly are respectively articulated with one ends of a left trimming width adjusting rod and a right trimming width adjusting rod, and the middle parts of the left blade assembly and the right blade assembly are respectively articulated with one ends of a left dip angle adjusting rod and a right dip angle adjusting rod; the left trimming width adjusting rod and the right trimming width adjusting rod can be locked and articulated with the shell of the power assembly through chutes on the rod bodies; the left dip angle adjusting rod and the right dip angle adjusting rod are in variable locked connection; a power output shaft of the power assembly is in drive connection with a left power output spline shaft and a right power output spline shaft respectively through a left bevel gear pair and a right bevel gear pair; and the left power output spline shaft and the right power output spline shaft are respectively inserted in spline holes corresponding to the rotating centers of the eccentric wheels of the left cutter assembly and the right cutter assembly. The trimmer for the tea garden can be used for trimming two sides of shrub simultaneously, and also adjusting the trimming width and the trimming angles of two sides simultaneously.

The invention discloses a phosphorus-containing flame retardant copolyester ionomer and the preparation method, which is characterized in that: based on a plurality of building units synthesizing polyester represented by I and II, a plurality building units represented by IV or a plurality building units represented by III and IV are introduced and the copolyester ionomer is prepared by random copolymerization; wherein, the number of the building units represented by III is 0 to 20 percent of the number of the building units represented by I, the number of the building units represented by IV is 0.1 to 20 percent of the number of the building units represented by I, the number of the building units represented II: the number of the building units represented by [I+III+IV] equals 1, the intrinsic viscosity of the prepared copolyester ionomer [Eta] is in the rang of 0.25 to 0.95dL/g. The phosphorus-containing flame retardant copolyester ionomer has the advantages that: because the ionic groups are phosphorus-containing groups, the flame-retardance modification and the ionization modification of polyester are realized simultaneously; meanwhile, the melt viscosity of polyester is enhanced by the incarbonization produced by the phosphorus-containing ionic groups and the ''physical crosslinking'' produced by the ''ionic aggregate'', thus, the flame retardant and anti-dripping performance is given to polyester.

A pixel structure of liquid crystal display including a first and a second sub-pixel electrodes, a first and a second data lines, a gate line, and a first and a second transistors is provided. The first and the second sub-pixel electrodes disposed in the first and second sub-pixel areas respectively include at least two display domains at left and right. The first data line is disposed under the interface between two domains of each of the first and second sub-pixel electrodes, and the second data line is disposed under the edges of the first and second sub-pixel electrodes. The gate line is disposed between the first and second sub-pixel areas. The first sub-pixel electrode is controlled by the gate line and the first data line through the first transistor. The second sub-pixel electrode is controlled by the gate line and the second data line through the second transistor.

A golf ball is provided that includes at least one layer of material that is a composite of thermoplastic and a second phase material that is dispersed within the thermoplastic. This material may be a blend of thermoplastic and elastomeric material. Preferably, the golf ball comprises a hard sphere core such as a hollow metal core, a layer of Thermoplastic Elastomer Composite, and a cover layer. This results in a golf ball that is legal for play and capable of drive distances essentially equivalent to those of currently available high performance golf balls, but also provides a ball that has less hook and slice during play, while being durable and economical to produce.

The invention relates to an electromagnetic-drive electrostatic-detection bulk acoustic wave harmonic-vibration triaxial microgyroscope and a preparation method thereof. The microgyroscope comprises a disk vibrator without a release hole, a cylindrical support column, an electromagnetic drive coil which is distributed on the substrate and has a certain gap with harmonic vibrator, a detection electrode and a common electrode. By adopting an MEMS (micro-electromechanical systems) processing technique, the manufacturing method has the advantages of simple manufacturing technique and high reliability, and can ensure lower cost and higher yield. The microgyroscope is subjected to drive detection by using the non-contact drive detection electrode, thereby reducing the influence on the harmonic vibrator by the outside. The microgyroscope has the advantages of small size, simple structure and shock resistance, and does not need vacuum encapsulation; and the processing technique is easy to implement, is compatible with a CMOS (complementary metal oxide semiconductor) technique, and is suitable for mass production.

An exercise kit including an exercise mat, an exercise belt and a carrying bag—with hand grips and a foot pouch on the mat to allow a user's swinging of a leg forward and backward while lying on either the left side or right side while holding onto the hand grips with the opposite foot inserted, in aerobic exercise and/or body toning.

A surgical incision marking template for marking a breast with an intended incision pattern prior to surgery comprises a pliable structural portion with a guide portion. The guide portion is substantially shaped and/or shapeable into a “keyhole” pattern. The keyhole pattern corresponds to the incision pattern generally utilized for the vertical short scar and the inferior pedicle techniques for breast reduction or mastopexy surgery and comprises a generally circular pattern and a generally linear pattern, with the generally linear pattern extending downward from the generally circular pattern when the template is placed on a standing patient. The pliable nature of the structural portion not only allows the shape of the guide portion to be altered but also allows the structural portion to conform to the curvature and shape of the breast. Methods of use for the template to mark the breast are also disclosed.

The invention relates to an electrostatically driving electrostatic detection bulk acoustic wave resonance three-axis microgyroscope and a manufacturing method thereof. The gyroscope comprises a disk vibrator with no release hole, a substrate, a cylindrical supporting pillar, driving electrodes, detection electrodes and common electrodes, wherein the disk vibrator is fixed on the substrate through the supporting pillar; the disk vibrator is vertical to an z-axis of the substrate; the driving electrodes, the detection electrodes and the common electrodes are disposed on the substrate in a circumference manner and parallel to the disk vibrator and have a gap with the disk vibrator; and every common electrode is disposed between two driving electrodes and two detection electrodes. The gyroscope is manufactured by an MEMS processing technology which is simple in manufacturing process, high in reliability and can guarantee relatively low cost and relatively high yield. A non-contact electrode structure is employed by the gyroscope and has smaller influence on the vibration of resonators. Besides, the gyroscope is small in size, simple in structure and easily achievable in manufacturing process, and is suitable for large-scale production.

The invention provides an electromagnetic-driving electromagnetic-detection triaxial microgyroscope with bulk acoustic wave resonance, and a preparation method thereof. The microgyroscope comprises a release-hole-free disk oscillator, a cylindrical support pillar, a baseplate, electromagnetic drive coils, electromagnetic detecting coils and isolating electrodes, wherein the disk oscillator is fixed on the baseplate through the cylindrical support pillar and is perpendicular to the Z-axis of the baseplate; the electromagnetic drive coils, the electromagnetic detecting coils and the isolating electrodes are circumferentially distributed on the baseplate, positioned below the disk oscillator and parallel to the disk oscillator, and gaps are reserved between the disk oscillator and the electromagnetic drive coils, the electromagnetic detecting coils and the isolating electrodes; the isolating electrodes are distributed between the electromagnetic drive coils and the electromagnetic detecting coils. According to the invention, a non-contact driving detection electrode is adopted to perform driving detection on the gyroscope, and thus external influence on the harmonic oscillator is alleviated. The microgyroscope adopts an MEMS processing technique, is simple in manufacturing process and high in reliability, and ensures low cost and high yield. Moreover, the microgyroscope has the advantages of small size, simple structure, easiness in realization of processing technique and suitability for batch production.

The invention discloses an image classification method, which comprises the following steps executed by an image classification model obtained by carrying out model training by utilizing a cross entropy function: receiving a target image, and carrying out quantization conversion on the target image; acting on the quantized and converted target image through a convolution kernel with a preset number of channels to obtain a preset number of feature images; performing convolution operation on the feature image, and performing product pooling on convolution output after convolution operation through a 2 * 2 pooling window; and after product pooling, obtaining a score value of the target image for each target type on an output layer, calculating a probability value of the target image belongingto each target type based on each score value by utilizing a softmax function, and determining the target type with the maximum probability value as the type to which the target image belongs. The method can effectively improve the accuracy and reliability of image classification. The invention further discloses an image classification device and equipment and a computer readable storage medium,which all have the above technical effects.

There is provided an apparatus for preventing displacement of a retainer in a rolling guide by making use of the property of the retainer of moving half the distance of a moving object, such as a table. The apparatus for preventing displacement of a retainer in a guide apparatus having a plurality of finite rollers held by retainers and including a guide mechanism for guiding the movement of a moving object of a machine tool along guide surfaces of a bed or a saddle, and a linear motor feed mechanism for feeding the moving object, includes: a displacement regulator having a stopper for regulating the position of each retainer, the regulator being movable in conjunction of the movement of the moving object; a line of magnet plates of a linear motor for driving of the moving object, the line of magnetic plates being a constituent of a linear motor feed mechanism for the moving object and being arranged parallel to the guide surfaces; a linear motor mechanism for moving the displacement regulator in the same direction as the moving direction of the moving body; and a linear motor control means for moving the displacement regulator in synchronization with the movement of the moving object at a velocity which is one-half of the velocity of the moving object.

An antenna device includes: an antenna panel; one input terminal through which a high-frequency signal is input; and a feeding circuit which distributes the high-frequency signal input to the input terminal to a plurality of antenna elements provided on the antenna panel. The feeding circuit includes: at least one first-stage branch circuit which includes one input and two outputs; at least two second-stage branch circuits which receive outputs of the first-stage branch circuit and include one input and two outputs; and a combining circuit which includes two inputs and one output and receives two outputs selected from the outputs of the first-stage branch circuit and outputs of the second-stage branch circuit.

Proposed is an arrangement structure for the electrodes of a micro LED that may perform driving without any problems even when an anode and a cathode constituting parts of the electrodes of a micro LED are rotated and thus the left, right, upper and/or lower sides thereof are changed. The arrangement structure includes: a substrate having an anode and a cathode; an LED anode element fixedly attached to the substrate, and configured to form an anode among electrodes of an LED device; an LED cathode element fixedly attached to the substrate, and configured to form a cathode among the electrodes of the LED device; an anode application element configured to apply a current while connecting the LED anode element to the anode of the substrate; and a cathode application element configured to apply a current while connecting the LED cathode element to the cathode of the substrate.