666 results about "Lower pole" patented technology

The present inventions is related to a superconducting or non-superconducting isochronous sector-focused cyclotron, comprising an electromagnet with an upper pole and a lower pole that constitute the magnetic circuit, the poles being made of at least three pair of sectors (3,4) called "hills" where the vertical gap between said sectors is small, these hill-sectors being separated by sector-formed spaces called "valleys" (5) where the vertical gap is large, said cyclotron being energized by at least one pair of main coils (6), characterised in that at least one pair of upper and lower hills is significantly longer than the remaining pair of hill sectors in order to have at least one pair of extended hill sectors (3) and at least one pair of non-extended hill sectors (4) in that a groove (7) or a "plateau" (7') which follows the shape of the extracted orbit is present in said pair of extended hill sectors (3) in order to produce a dip (200) in the magnetic field.

The present invention provides a thin film write head having an improved laminated flux carrying structure and method of fabrication. The preferred embodiment provides laminated layers of: high moment magnetic material, and easily aligned high resistivity magnetic material. In the preferred embodiment, the easily aligned laminating layer induces uniaxial anisotropy, by exchange coupling, to improve uniaxial anisotropy in the high moment material. This allows deposition induced uniaxial anisotropy by DC magnetron sputtering and also provides improved post deposition annealing, if desired. It is preferred to laminate FeXN, such as FeRhN, or other crystalline structure material, with an amorphous alloy material, preferably Co based, such as CoZrCr. In the preferred embodiment, upper and lower pole structures may both be laminated as discussed above. Such laminated structures have higher Bs than structures with insulative laminates, and yokes and pole tips and may be integrally formed, if desired, because flux may travel along or across the laminating layers. The preferred embodiment of the present invention improves soft magnetic properties, reduces eddy currents, improves hard axis alignment while not deleteriously affecting the coercivity, permeability, and magnetostriction of the structure, thus allowing for improved high frequency operation.

The present invention provides a thin film write head having an upper and lower pole structures and conductor turns forming a winding for generating magnetic flux. The conductor is formed with a non-planar top surface. The winding of the present invention may be formed of lower and upper turns. The upper turns may be formed with a non-planar top surface, a non-planar bottom surface, or both. It is preferred that the bottom surface of the upper conductor turns be coherent with the non-planar top surface of the lower conductor turns. The non-planar top surface may be formed by removing corners formed during deposition between a generally planar top surface and abutting side walls. The corners may be removed by ion milling to form the non-planar top surface. The conductor may be copper with the non-planar top surface having sloping facets. The thin film write head of the present invention may be utilized to provide an improved data storage and retrieval apparatus. The preferred embodiment provides reduced coil resistance thereby reducing Johnson Thermal Noise and power dissipation. It also allows for reduced yoke length and reduced stack height while providing low apex angles to expand and improve yoke material deposition thereby improving head response and operational frequency.

Embodiments in accordance with the thin film write head of the present invention have a lower pole structure, an upper pole structure, and a multilayer write gap extending from an air bearing surface between the upper and lower pole structures. In preferred embodiments, the write gap comprises at least two of: (a) a first layer covering a lower pole tip portion of the lower pole structure, (b) a second layer covering turns of a semiconductor winding, or (c) a third layer covering a winding insulation stack. In more preferred embodiments, the write gap is formed of the first, the second, and the third write gap layers. An advantage of a write head with a multilayer write gap is that it allows better control of write gap thickness. As such, loss of write gap thickness can be compensated for by deposition of the second write gap layers, or by deposition of the third write gap layer. Some embodiments have one or more additional advantages in providing increased corrosion prevention, improving the integrity of conductor insulation, and / or improving the top pole magnetic material characteristics.

The invention relates to a cyclotron which can produce a beam of accelerated charged particles that are intended for the irradiation of at least one target (200). The inventive cyclotron consists of a magnetic circuit which essentially comprises: an electromagnet with at least two poles (1, 1′), namely an upper pole (1) and a lower pole (1′), which are disposed symmetrically in relation to a mid-plane (110) which is perpendicular to the central axis (100) of the cyclotron and which are separated by a gap (120) containing the circulating charged particles and return flux (2) in order to close the aforementioned magnetic circuit; and a pair of main induction coils (5, 5′) which are used to create an essentially-constant main induction field in the gap between poles 1 and 1′. The invention is characterised in that it comprises means of centring the above-mentioned beam, consisting of at least one pair of bucking coils (6, 7) which are supplied by an electrical source (8) and which can modulate the intensity of the main induction field produced by the main coils (5, 5′), in order to increase the intensity of the induction field in a first area of the cyclotron and to reduce the intensity of the induction field in a second area of the cyclotron, which is diametrically opposed to the central axis (100) of the cyclotron.

The invention relates to a cyclotron which can produce a beam of accelerated charged particles that are intended for the irradiation of at least one target (200). The inventive cyclotron consists of a magnetic circuit which essentially comprises: an electromagnet with at least two poles (1, 1′), namely an upper pole (1) and a lower pole (1′), which are disposed symmetrically in relation to a mid-plane (110) which is perpendicular to the central axis (100) of the cyclotron and which are separated by a gap (120) containing the circulating charged particles and return flux (2) in order to close the aforementioned magnetic circuit; and a pair of main induction coils (5, 5′) which are used to create an essentially-constant main induction field in the gap between poles 1 and 1′. The invention is characterised in that it comprises means of centring the above-mentioned beam, consisting of at least one pair of bucking coils (6, 7) which are supplied by an electrical source (8) and which can modulate the intensity of the main induction field produced by the main coils (5, 5′), in order to increase the intensity of the induction field in a first area of the cyclotron and to reduce the intensity of the induction field in a second area of the cyclotron, which is diametrically opposed to the central axis (100) of the cyclotron.

A mastopexy implant for maintaining the breast in an elevated and aesthetically pleasing position includes a lower pole support comprising end portions which may be affixed to the chest wall or to a previously installed upper suspension strut. The implant is loaded in an insertion device. The insertion device is inserted through a small incision and into a subcutaneous pocket created in an inferior half of the breast. The lower pole support may have various constructs and in one embodiment includes a unitary conformable mesh having a plurality of arm or band members which are attached across the breast parenchyma and to the chest wall.

Disclosed herein are polyurethane polymer matrices with a porosity of from about 20 microns to about 90 microns that are useful in promoting closure and protection of incision sites; supporting the lower pole position of breast implants; and providing a partial or complete covering of breast implants to provide a beneficial interface with host tissue and to reduce the potential for malpositioning or capsular contracture. The disclosed matrices can be seeded with mammalian cells.

A surgical procedure for correcting cystocele, comprising the steps of:identifying a center of the cystocele;performing an infiltration of the cystocele with physiological solution;performing a longitudinal incision;identifying the pubocervical fascia and performing a longitudinal incision therein;defining four paravesical tunnels directed toward the upper and lower poles of the obturator foramina bilaterally;introducing a mesh with four articulated arms, each arm being introduced in a corresponding tunnel;suturing the longitudinal incision.

A variable cohesive gel form stabilizing implant is disclosed for augmentation or reconstruction of the breast. The prosthesis of this invention comprises an implantable shell or envelope (not limited to a single shell or envelope), filled with a biocompatible gel, or gels, having alterations in gel cohesiveness to maintain stable form, shape, and dimension after surgical implantation. The gel cohesiveness may increase, with increased volume or dimension of the prosthesis. The variable cohesiveness of the gel filler material may be altered by any means (i.e. chemical, fabrication, etc.). The variable cohesive gel form stabilizing implant has shape retention characteristics to maintain its form, thereby reducing or eliminating the undesirable effects of shell wrinkling, knuckling, scalloping or deformation, which can occur at the upper or lower pole of the prostheses, along the perimeter of the shell or at the base, post-implantation. Finally, the variable cohesive gel form stabilizing implant provides new control and possibilities for achieving and preserving the most natural breast shape.

A rotary input device includes a first annular magnetic body in which a plurality of outward protrusions protruding toward an outside in a radial direction are disposed along a circumferential direction, a second annular magnetic body in which a plurality of inward protrusions formed to oppose the outward protrusions of the first magnetic body are disposed along a circumferential direction, and a rotary knob configured to relatively rotate the first magnetic body and the second magnetic body. The first magnetic body includes a magnet in which opposing surfaces facing each other are vertically disposed and which is magnetized to two poles of an upper pole and a lower pole including the opposing surfaces, a pair of yokes that interposes the opposing surfaces of the magnet vertically, and the outward protrusion formed on the pair of yokes.

A thermal flying height adjustment slider capable of being mounted on a small-sized thin film magnetic head slider is provided wherein terminals of an energizer serving as a heater prevent corrosion of pole pieces and the number of terminals is reduced. In one embodiment, one of terminals of the energizer serving as the heater is electrically connected to the lower pole piece, so that a relay terminal for a heating device is used also as the terminal for preventing the corrosion of pole pieces.

The crutch includes a lower pole with a handgrip near the upper end thereof, and may include a forearm cuff above the handgrip in the case of a forearm type crutch. The distance between cuff and handgrip is adjustable, as is the lower pole length. A resilient limb or bow is rigidly affixed to the lower end of the pole, with its upper attachment end being rearwardly offset from the pole. This results in a forward torque or moment when the user applies a downward force upon the crutch during use, thereby assisting the user in forward travel. The lower or distal end of the limb also absorbs shock for the crutch user when the limb contacts the underlying surface. The springback of the limb returns a considerable portion of the energy imparted by the user as weight was applied to the crutch, thereby facilitating user mobility.

A transducer with dual coil and dual magnetic gap of which the upper and lower pole plates of are two inwardly concave plates or round plates. A set or more than1 a piece sets of axially magnetized permanent magnets are provided. Said permanent magnets are engaged with pole faces of said plates. Dual magnetic gap are formed between the vertical faces of said plates and the vertical faces of a coaxial mounted annular or cylindrical magnetic body. Coils are inserted into said magnetic gap, while wound direction of dual coil and the direction of current are decided to produce an electrodynamic force in the coils to the same direction. Said transducer possesses resistance load characteristics by setting the values of the inductance of the dual coil equal to each other in case that said transducer are provided with two magnetic paths and coil circuits completely symmetric in their magnetic characteristics.

The invention relates to a method and a device for detecting an insulator through a multi-rotor unmanned aerial vehicle. The device comprises a multi-rotor unmanned aerial vehicle, as well as an onboard control computer of a flight control system, a positioning device, an unmanned aerial vehicle steering engine controller, a height measuring device, a speed measuring device, a high-definition camera, an unmanned aerial vehicle PCM (Pulse-Code Modulation) remote control receiver, an onboard wireless communication unit and a lifting device which are arranged on the multi-rotor unmanned aerial vehicle; the lifting device drives a probing lower pole to move; the onboard wireless communication unit communicates with a ground station; the unmanned aerial vehicle steering engine controller controls a servo steering engine; the servo steering engine controls a multi-rotor module; a probing upper pole and the probing lower pole are respectively connected with respective voltage sensors; the two voltage sensors are connected with an A / D (Analogue-to-Digital) conversion unit, a DSP (Digital Signal Processor) unit and the onboard control computer of the flight control system. The method and the device provided by the invention can be used for knowing and control the operation condition of a circuit insulator in time; the risk when a detector climbs up to carry out near-distance electrified operation can be further avoided; and meanwhile, the detection efficiency can be improved.

A magnetic write transducer includes a yoke having a lower pole portion, an upper pole portion, and a first bobbin portion; a first coil turn wrapped around the first bobbin portion of the yoke in a first plane; a second coil turn wrapped around the first bobbin portion of the yoke in a second plane above the first plane; a third coil turn wrapped around the First bobbin portion of the yoke in a third plane above the second plane; and a fourth coil turn wrapped around the first bobbin portion of the yoke in a fourth plane above the third plane.

Disclosed herein are polyurethane polymer matrices with a porosity of from about 20 microns to about 90 microns that are useful in promoting closure and protection of incision sites; supporting the lower pole position of breast implants; and providing a partial or complete covering of breast implants to provide a beneficial interface with host tissue and to reduce the potential for malpositioning or capsular contracture. The disclosed matrices can be seeded with mammalian cells.

The invention discloses a fingerprint detection circuit, a fingerprint detection device and a touch panel. The fingerprint detection circuit comprises an operational amplifier, a feedback branch, a reference capacitor and a fingerprint detection electrode. The operational amplifier comprises a positive input end, a negative phase input end, an output end, a power supply end and a grounding end. The feedback branch is connected with the negative phase input end and the output end. An upper pole plate of the reference capacitor is connected with the negative phase input end. A lower pole plate inputs a first drive signal. The fingerprint detection electrode is connected with the negative phase input end. The positive input end inputs first reference voltage. The power supply end inputs a power supply signal. The grounding end inputs a second drive signal. The fingerprint detection circuit improves the difference of an output signal of the output end by adjusting the first drive signal, the second drive signal or the first reference voltage. According to the invention, the accuracy of fingerprint detection is improved.

Disclosed herein are polyurethane polymer matrices with a porosity of from about 20 microns to about 90 microns that are useful in promoting closure and protection of incision sites; supporting the lower pole position of breast implants; and providing a partial or complete covering of breast implants to provide a beneficial interface with host tissue and to reduce the potential for malpositioning or capsular contracture. The disclosed matrices can be seeded with mammalian cells.

The invention discloses an ion thruster discharge chamber magnetic pole structure which comprises a lower magnetic pole (1), a middle magnetic pole (2), an upper magnetic pole (3), a lower pole shoe (4), a middle pole shoe (5) and an upper pole shoe (6). The lower pole shoe (4), the middle pole shoe (5) and the upper pole shoe (6) are correspondingly connected with the lower magnetic pole (1), the middle magnetic pole (2) and the upper magnetic pole (3). The structure further comprises permanent magnets (9 and 10). A magnetic force line loop is formed among the magnetic poles through the pole shoes (4, 5 and 6) and the permanent magnets (9 and 10). A loop tip cusped magnetic field is formed in a discharge chamber. The structure is characterized in that positive pole cylinders (7 and 8) of the discharge chamber are arranged in the cusped magnetic field, all the magnetic poles extend to the inner surfaces of the positive pole cylinders (7 and 8) and are charged with negative electricity relative to the positive pole cylinders (7 and 8), and a discharge chamber negative pole (11) installed on the lower pole shoe (4) directly extends into the discharge chamber under the circumstance without the positive pole cylinders ahead. The invention further discloses a design method for the ion thruster discharge chamber magnetic pole structure. When the structure is used, the primary electron utilization rate can be increased, and the discharging efficiency and the beam uniformity are improved.

The invention discloses a time-interleaving analogue-to-digital converter capable of suppressing sampling time mismatching, and relates to the technical field of micro-electronics. The invention provides the structure of the time-interleaving analogue-to-digital converter capable of suppressing the sampling time mismatching aiming at the influence of the sampling time mismatching on the time-interleaving analogue-to-digital converter. The analogue-to-digital converter comprises a channel sampling and holding circuit, a sub-analogue-to-digital converter and a multiplexor. The channel sampling and holding circuit introduces a system main clock to determine a sampling time, so that the sampling time mismatching caused by sampling by each channel respectively is avoided, and the dynamic performance of the time-interleaving analogue-to-digital converter is improved effectively. In the method, the sampling and holding circuit does not need to be preposed, so that influence on an input signal bandwidth is avoided; moreover, the influence of charge injection is eliminated and the linearity of a system is improved by utilizing a lower pole plate sampling technology by the channel sampling and holding circuit.

The invention belongs to the technical field of micro-electro mechanic systems (MEMS), and relates to a piezoelectricity driven capacitance detecting two-axis gyroscope. According to the invention, a lower surface of a gyroscope oscillator with a shape of a round disc, a wheel spoke or a honeycomb is connected to a supporting cylinder. The other end of the supporting cylinder is fixed on a lower pole plate. The lower pole plate is fixed on a carrier. An upper pole plate signal detecting electrode is positioned on a lower end surface of the upper pole plate. A lower pole plate signal detectingelectrode is positioned on an upper end surface of the lower pole plate. The upper pole plate, the lower pole plate and the gyroscope oscillator are assembled, and differential capacitance is formed for detecting output signals. According to the invention, a special modality of a round disc, a wheel spoke or a honeycomb shape is adopted in the gyroscope oscillator, the detection is driven by piezoelectricity effect, and the detection is carried out by using capacitance. Therefore, angular velocities parallel to the upper and the lower surfaces of the gyroscope oscillator can be sensitively detected. According to the invention, with an MEMS micromachining technology, two-axis detection can be realized, the machining technology is easy to realize, the reliability is high, the energy consumption is low, the impact resistance is high, and the gyroscope can operate well in severe environments.

An electromagnetic rotary drive includes a magnetically contactlessly drivable rotor free of coils, and a stator configured as a bearing and drive stator configured to drive the rotor magnetically and contactlessly about an axis of rotation. The rotor is capable of being supported magnetically contactlessly with respect to the stator in an operating state. The stator includes an upper stator part having a plurality of pronounced upper poles configured to carry upper windings and a lower stator part having a plurality of pronounced lower poles configured to carry lower windings. The upper stator part and the lower stator part are arranged spaced apart from one another with respect to an axial direction. A permanent magnet is disposed between the upper stator part and the lower stator part.

The invention discloses a first-stage circuit structure of a pipelined analog-to-digital converter, which comprises a 4-digit fully parallel analog-to-digital converter, a code circuit and a residue gain analog-to-digital converter. A two-phase non-overlapping clock is adopted, a sampling phase samples input voltage, and a maintaining phase amplifies residual voltage. The residue gain analog-to-digital converter consists of a sub analog-to-digital converter, a subtracter and a residue amplifier. During sampling, the 4-digit fully parallel analog-to-digital converter conducts comparison and quantification on the input voltage and generates a 16-digit thermometer code which is converted to a 4-digit binary output code by the encoder. A lower pole plate of a sampling capacitor array is connected with the input voltage, and an upper pole plate thereof is connected with a common mode level for sampling an input. During maintaining, the sub analog-to-digital converter outputs different voltages to the sampling capacitor array according to a control of the thermometer code; subtraction from the input voltage is accomplished according to twice charge conservation; and a feedback capacitor is in bridge connection with the two ends of the residue amplifier to amplify the residual voltage by 8 times for use by a backward-stage circuit.

Full contour absorbable implants for breast surgery redistribute breast volume between the breast's upper and lower poles in exact and desirable ratios. The implants preferably redistribute breast volume so that the upper pole breast volume is 20-40% of the total volume, and the lower pole breast volume is 60-80% of the total volume. The implants are also designed to provide specific curvatures to the poles of the breast, and to angulate the nipple areolar complex slightly skyward so that the patient's nipple is positioned at an angle above the nipple meridian reference line. The implants are designed to be transitory, with sufficient strength retention to allow transition from support of the breast by the implant to support by regenerated host tissue growing in and around the implants, without any significant loss of support during or subsequent to remodeling. The implants may optionally be used with permanent breast implants.

The present invention provides an electromagnetic drive motor assembly (EDMA) that has an inner flux return assembly formed from an upper pole piece and a lower pole piece oppositely disposed relative to each other along the center of the EDMA. An annularly positioned conductive ring (or flux stabilization ring) encircles the inner flux return assembly, concentrically in contact with the outside of the inner flux return assembly. Along the exterior side of the flux return pieces, is a magnet that is between a top plate and a bottom plate. Each plate contacts with the magnet to form a magnetically conductive system. A magnetic gap is formed in between the inner flux return assembly and the top and bottom plates. Disposed within the magnetic gap is a dual coil wound around a cylinder. The dual coil includes a first coil portion and a second coil portion. To minimize the modulation, the top and bottom plates may be saturated and plate tips may be provided near the magnetic gap. And to dissipate heat away from the magnetic gap, a thermal radiating conductive ring may be provided as well.

An umbrella has a lower pole and an upper pole and a fabric. The lower pole includes screw threads. A spring clip in an inverted V-shaped configuration has outwardly extending projections removably coupling together the upper pole and the lower pole. A handle is removably coupled to the lower pole to twist the lower pole. Each rib of a plurality of ribs has an interior end and an exterior end. The interior ends of the ribs are coupled to the upper pole. The fabric overlies the ribs. Each tip of a plurality of tips has an upper part and a lower part. Each upper part has a tubular recess receiving the exterior end of an associated rib. The periphery of the fabric is secured between the upper part and the lower part.