68 results about "Compact dimension" patented technology

In one set of embodiments the invention comprises a highly accurate, low-power, compact size DAC utilizing charge redistribution techniques. Two complementary conversions may be performed and added together to form a final DAC output voltage by performing charge redistribution a first time, and again a second time in a complementary fashion, followed by a summing of the two charge distributions, in effect canceling the odd order capacitor mismatch errors. By canceling all odd order mismatch errors the accuracy of the DAC may become a function of the square of the mismatch of the two capacitors, resulting in greatly increased accuracy. When performing the complementary conversions for multiple bits, the sequence in which each of the two capacitors is charged may be determined to minimize the even-order errors, especially second-order errors. The DEM technique may be applied, in conjunction with the complementary conversions, with less oversampling than required by current DEM implementations, resulting in even-order errors being substantially reduced in addition to all odd-order errors being eliminated.

To provide more compact dimensions of a via structure formed by signal via pairs and ground vias in multilayer substrate. A multilayer substrate is provided such that the multilayer substrate comprising a high-isolated via cell wherein the high-isolated via cell comprises: two signal via pairs; a shield structure around two signal via pairs consisting of ground vias and ground strips connected to ground vias wherein the shield structure is formed symmetrically in respect to two via pairs to reduce the transformation between mixed modes and also leakage from two signal via pairs; a clearance hole separating signal via pairs from other conductive parts of the multilayer substrate and having predetermined dimensions to provide broadband operation of the high-isolated via cell; and the separating strip disposed symmetrically between said signal via pairs to provide crosstalk reduction between two signal via pairs and common mode decrease.

A force sensor for measuring forces comprises a sensor plate where at least one measuring resistor is arranged whereby deformations of the sensor plate can be detected as a result of forces to be measured. The sensor plate includes at least one local weakened area whereby deformation behavior of the sensor plate is influenced. The weakened area results in bypassing the flux of force in the sensor plate and in concentrating the forces at non-weakened portions of the sensor plate. The at least one measuring resistor is preferably arranged at such non-weakened deforming portion of the sensor plate. The at least one weakened area defines sensor plate portions separated from at least in sections, the sensor plate portions being exposed to opposite forces. The sensor plate can be mounted in a housing with an evaluation circuit, for example, and constitute a force sensor having compact dimensions and high measuring sensitivity.

A torque limiting device capable of transferring torque within a power train, and also capable of disengaging the torque transfer connection when the torque level exceeds a specific point. A specific ball bearing joint is formed where a radial boss mates with the inner circumference of a flange. The ball bearing joint consists of an outer radial groove formed on the aforesaid inner circumference, an inner radial groove formed on the boss and facing the outer groove, and ball bearings inserted between the two radial grooves. Each radial groove is formed to a V-shape cross section having a radius of curvature smaller than that of the ball bearings, thus providing ball bearing support at two points within each groove, and four points of bearing support in total. Rotation of the torque output part is thus supported adequately in both the radial and axial thrust directions by a single ball bearing structure which allows the torque limiter to be made to compact dimensions.

The present invention relates to earphone arrangements configured to accommodate an acoustically-resistant couple within the compact dimensions of ear-bud type earphones, and aims to incorporate a front volume to rear volume acoustic couple into an earphone without requiring significant addition to the lateral dimensions of the earphone. The earphone has an elongate sound outlet port that locates into a listener's ear canal and bears an internal support surface which is apertured and communicates with the outlet port. A microspeaker is supported on the support surface and projects sound through the aperture and toward the outlet port. Furthermore, the housing includes a front cavity in front of the microspeaker and in communication with the outlet port, and a rear cavity behind the microspeaker. The support surface bears a recess that communicates with the front cavity, and an acoustic resistor is accommodated in the recess.

A device, of compact dimensions, and method that enables Public Safety agencies to issue geographically specific alerts to which the device responds. Alerts include complex alert area boundary data interpreted by the device. The device responds only to alerts germane to the its installed location. When activated, the device annunciates alerts using lights, tones, speech, and text, indicating the alerts' nature and desired citizen action. The invention augments the national EAS system capabilities using existing digital paging or digital subscription data infrastructures that broadcast the alerts using FM subcarriers. The invention further: a) does not require citizen participation or maintenance beyond acquisition and installation, b) does not require skilled use, c) is multilingual, d) provides annunciation sufficient to awaken sleeping people, e) is always on, f) is economically manufacturable, g) is in-field upgradeable.

The present invention relates to an electro-acoustic transducer suitable for applications within mobile communication equipment and hearing aids. The transducer comprises two diaphragms positioned on opposite sides of a magnetic circuit having two magnetic gaps. When used as a microphone the transducer is substantially insensitive to vibrations, and when used as a speaker the transducer generates only very low vibration levels. The magnetic circuit has a number of advantages compared to conventional transducers with circular magnetic. The transducer can be made lightweight and with very compact dimensions compared to conventional designs. In a preferred embodiment the diaphragms are rectangular. The transducer may additionally be used as a vibration generator for silent alarm signals.

Disclosed are optical modulators that provide high-speed modulation capability and compact size. In exemplary modulator embodiments, the branch waveguide cores are formed in different processing layers than the input waveguide core, and light is coupled from an input waveguide core to two branch waveguide cores along diagonal directions. The construction enables the input waveguide core to be made of low-loss material compared to the electro-optic material of the branch waveguide cores. Also disclosed are interconnect apparatuses that can be used in processing systems. Exemplary interconnect apparatuses provide various configurations of components that enable high-speed modulation and compact size. The exemplary interconnect apparatuses may use the exemplary optical modulators disclosed herein.

The invention discloses a capillary ceramic body as well as a manufacturing method and an application thereof. The capillary ceramic body comprises the following components in percentage by mass: 65%-75% of aluminum oxide (Al2O3), 20%-30% of nano-zirconia and 0.5%-5% of submicron ceramic powder. The capillary ceramic body has excellent toughness and high strength, durability, accuracy and surface smoothness. According to the preparation method, high surface smoothness and related mechanical properties of the prepared capillary ceramic body can be ensured; and stable and compact dimension of the prepared capillary ceramic body can be ensured.

A toroidal ring gyroscope with a robust outer perimeter anchor and a distributed suspension system. The vibrational energy in the design is concentrated towards the innermost ring, and the device is anchored at the outer perimeter. The distributed support structure prevents vibrational motion propagating to the outer anchor, which helps trap the vibrational energy within the gyroscope and provides a Q-factor of >100,000 at a compact size of 1760 μm. Due to the parametric pumping effect, energy added to each mode is proportional to the existing amplitude of the respective mode. As a result, errors associated with finding the orientation of the standing wave and x-y drive gain drift are bypassed. The toroidal ring gyroscope can be fabricated using any standard silicon on insulator process. Due to the high Q-factor and robust support structure, the device can potentially be instrumented in high-g environments that require high angular rate sensitivity.

A lathe for machining optical workpieces, in particular spectacle lenses, comprises a fast tool arrangement and a workpiece spindle arrangement. A machine frame is cast monolithically from polymer concrete and on and in which all the functional surfaces, functional spaces and other cutouts are formed to their exact dimensions during the casting process. The machine frame upper part cast in one piece simultaneously covers the fast tool arrangement and the workpiece spindle arrangement and thus the machine bed in the manner of a covering hood. The machine frame is of compact dimensions, has a very rigid oscillation-damping machine bed and, in comparison with the rapidly moving elements of the fast tool arrangement, has a very large mass with a high center of gravity, which prevents the transmission of disruptive oscillations from the fast tool movement to the machine bed and thus to the workpiece spindle arrangement. The lathe can be manufactured in a cost-effective manner and allows the production of any spectacle lens optical surfaces with extremely high dimensional accuracy and surface quality. The achievable optical surface quality allows direct polishing by means of flexible or adaptable polishing tools, as a result of which considerable savings are made in the subsequent process. If suitably equipped with a cutter spindle arrangement, edge machining operations on the spectacle lenses can be carried out.

A multifunctional desk lamp includes a base, a lighting body, and a light support connected to the base and the lighting body. The lighting body has an integral, one-piece structure and includes an illuminator portion for illumination and an image projection portion for projecting images. Through an integral structure design of the image projection portion and the illuminator portion, advantages of compact size and light weight are achieved. In addition to demonstrating a normal function of lighting, an additional function of projecting images is also provided. Through manual rotation of a projection gear, change of projected images can be achieved so as to make the use convenient and easy for users.

A wind or gas velocity profiler integrated with micromachined (a.k.a. MEMS, Micro Electro Mechanical Systems) silicon sensors in an open or enclosed space is disclosed in the present invention. There are three main embodiments disclosed in the present invention. Through the preambles of the independent claims, the advantages and merits of such measurement apparatus with MEMS flow sensor will be demonstrated as well. A silicon-based MEMS flow sensor can greatly reduce the sensor fabrication cost by a batch production. The integration with MEMS flow sensor makes the invented anemometer operate in the ways of better measurement accuracy, lower power consumption, higher reliability and a compact dimension compared to traditional anemometers such as cup anemometer, thermal anemometer and ultrasonic anemometer.

A method for plasma containment is disclosed comprising varying the system energy subject to Maxwell's equations, momentum moment equations, and adiabatic equations of state, without imposing a quasi-neutrality condition. In one embodiment, electrons are confined by magnetic forces and ions by internal, electrostatic forces that arise due to charge separation of the two fluids. In one embodiment, input parameters for the energy variation process are selected so as to satisfy a plasma beta parameter condition, thereby reducing the number of control variables by one. The radial scale length for cylindrically symmetric plasmas in one-dimensional equilibrium is characterized by the electron skin depth. Such plasmas can be confined as a high aspect ratio toroid having compact dimensions. Applications of the invention include neutron generation, x-ray generation, and power generation.

The present invention discloses a miniature antenna that has a simple structure, compact dimension and high efficiency. The miniature antenna is comprised of a dielectric element made of a dielectric material, having a first surface and a second surface opposite to the first surface, a first electrode layer being laid on the first surface, and a second electrode layer being laid on the second surface. The first electrode layer connected to a signal feeding line and the second electrode layer, connected to a ground plane, are partially overlapped to form a region that functions as a capacitor. Thereby, the miniature antenna can transmit and receive signals. The capacitance and resonant frequency of the miniature antenna can be adjusted via varying the pattern of the electrode layers, varying the thickness or permittivity of the dielectric element or via varying the size of the overlapping areas of the two electrode layers.

A multi-band antenna of compact size includes a conductor of uniform cross-section folded to form the antenna with a connection portion, a low-frequency first radiation portion, and a high-frequency second radiation portion. The connection portion has a feeding point for signal feeding. The first and second radiation portions connect to two ends of the connection portion. The first radiation portion is folded along two different planes to form three main sections. The second radiation portion is folded along a plane to form two sections. A terminal section of the first radiation portion and a terminal section of the second radiation portion are parallel, such that radiation of these two sections is coupled to enhance radiation characteristics of the antenna. Also, the folded structure helps to achieve compact size of the antenna.

A glass ribbon in the form of a glass roll is provided that is optimized with respect to the requirements of a long service life and at the same time compact dimensions. A bending radius on the inner side of the thin glass roll is determined by performing breakage tests on samples of the glass material, statistical parameters are determined on the basis of the breakage tests, and the statistical parameters are converted into a range of bending radii which meet the requirements on service life and the most compact dimensions possible of the thin glass roll.

A cracking unit of waste tyres is provided, which comprises a cracking furnace, a heating mechanism and a collecting mechanism of cracking materials. The unit is characterized in that: the cracking furnace comprises a combustion chamber on the bottom and a high temperature cracking room over the combustion chamber and the combustion chamber and the high temperature cracking room are separated by a division board between the two; the heating mechanism is positioned in the combustion chamber; the collecting mechanism of cracking materials comprises a solid collector for collecting solid products and a condenser for collecting gaseous products, wherein, the air inlet of the condenser is connected with the high temperature cracking room through an air shooter and the product outlet of the condenser comprises a gas phase outlet for outputting unset gas and a liquid phase outlet for outputting condensate, and the gas phase outlet is connected with the heating mechanism; the front end of the high temperature cracking room is connected with a feeding conveyor mechanism. A moving bed pyrolysis boiler has simple structure and compact dimension and is used for processing the waste tyres with simple decomposition and processing technology process and short processing period, and can adjust and control the yield of the products through changing the decomposition temperature and controlling the detention time of the tyres in the pyrolysis chamber. In addition, the system can independently operate relying on itself without additionally supplying burning fuels and making best use of all materials.

The invention discloses an inclined seam separating type multi-band band elimination filter for artificial surface plasmons, and belongs to the multi-band band elimination filters. According to the filter, a periodic metal grating is printed on a flexible medium substrate, wherein the periodic metal grating is connected with a coupling structure and a coplanar waveguide; a fine inclined seam and the periodic metal grating are combined, and the fine inclined seam is not printed with a metal film; the coplanar waveguide is a guide wave transmission structure; mutual transformation between guide waves which are transmitted by the coplanar waveguide and the artificial surface plasmons which are transmitted on the periodic metal grating is realized through the coupling structure; the periodic metal grating is an artificial surface plasmon transmission line. The fine inclined seam and the periodic metal grating are combined, and the periodic metal grating is separated at macro level. The inclined seam separating type multi-band band elimination filter has the advantages that: the surface transmission type filter has a relatively small dimension and high flexibility, and can be applied to a compound integrated circuit with a compact dimension and a special function; base parameters are changed, so that the inclined seam separating type multi-band band elimination filter can be applied to microwave, millimeter-wave and terahertz frequency bands.

The invention relates to a valve arrangement (1) which has a valve unit (2) with an electrodynamic drive device (22). The latter contains an annular permanent magnet unit (22a) and a coil unit (23b) which can be moved in a linear manner relative to the permanent magnet unit, thereby carrying out a drive movement (39), and which has a coil (43) that interacts with the permanent magnet unit (22a). The coil (43) is arranged on a coil support (46) of the drive unit (23b), a column-shaped guide portion (52) of said coil support being immersed into a central guide through-opening (48) of the permanent magnet unit (22a) and said coil support being paired with a closure means (34) which cooperates with a valve seat (33). As a result of the interaction between the guide portion (52) and the permanent magnet unit (22a) in the region of the guide through-opening (48), a linear guide is provided for the coil unit (23b) such that a precise valve function can be ensured with compact dimensions.