311results about How to "Reduce arcing" patented technology

A catheter assembly for pressure-sensitive control of ablation treatment is disclosed. The assembly includes a conductive element, an electrode, and a pressure sensitive conductive composite member positioned between the conductive element and the electrode. At least one of the conductive pin, the pressure sensitive conductive composite element and the ablation electrode are moveable to create an engagement position and a non-engagement position. In the engagement position, the elements are electrically coupled such that ablation energy may be delivered from the conductive pin to the ablation electrode via the pressure sensitive conductive composite element. In the non-engagement position, the elements are electrically decoupled such that ablation energy is not delivered to the ablation electrode. A related method for pressure-sensitive control of ablation is also disclosed.

To avoid arcing and shorting within a field emission device, a bottom portion of a gate electrode is protected with an insulating material to avoid or reduce arcing among the electrodes and the electron emitters in the device. In a method for manufacturing such a field emission device, an emitter hole is formed through an insulating layer such that a portion of the gate electrode overhangs the hole and is protected on its underside by the insulating layer. The device can be used in display systems, such as CNT flat panel displays.

A microwave apparatus and system that monitors the amount of food products within a cavity and adjust the microwave power provided to the cavity. The apparatus and system uses a product sensor system and a movement sensor system to accurately determine the product load in the microwave cavity. A computer controller, based on the product load information provided by the product sensor system and the movement sensor system, operates to adjust the amount of power provide to the microwave cavities by the microwave transmitters.

Various contact systems and methods for manufacturing and using such are disclosed herein. Examples of the contact systems include a surface with one set of pads biased at a first voltage level, and another set of pads biased at a second voltage level. Such a contact system can be used, for example, to transfer power to an electromechanical device disposed thereon. In one particular example, the electromechanical device can include a power storage element and two or more couplings. When one of the couplings contacts a pad biased at the first voltage level, and another of the couplings contacts a pad biased at the second voltage level, a circuit is completed where some derivative of the differential between the first voltage level and the second voltage level is placed across the power storage element. Completion of the circuit causes the power storage element to charge. Power can be drawn from the power storage element to operate the electromechanical device.

Methods and systems for obtaining improved computed tomographic reconstructions are provided. A camera obtains one or more images of a patient while a tomographic scan is performed. A CT scanner obtains one or more tomographic projections. The total number of the one or more tomographic projections obtained during the CT scan is determined. For each of the one or more patient images obtained, a processor correlates the patient image with the one or more tomographic projections, calculates a position of the patient and determines if the calculated position of the patient is greater than one or more predetermined constants. If it is determined that the calculated position of the patient is greater than one or more predetermined constants and a total number of the one or more tomographic projections obtained is less than a predetermined number, separate projections are substituted in the place of the one or more tomographic projections that were correlated to the patient image. If it is determined that the calculated position of the patient is greater than one or more predetermined constants and a total number of the one or more tomographic projections is greater than a predetermined number, the tomographic scan is aborted or the tomographic reconstruction is reconstructed on a reduced arc.

The present invention is directed to ablation devices and methods utilizing pressure sensitive conductive composites, such as quantum tunneling composites, or other contact-sensitive, conductive polymers. The materials provide for electrodes and methods capable of differentiating between a soft and a hard push. The present invention thus provides an electrode for delivering selective electrical energy for ablation that may be varied based upon the pressure exerted on the surface area of the targeted tissue.

A device and method for operating automotive battery system relays and related switches. By aligning a magnetic field with a direction of current flow in a contact plate disposed between magnets that are producing the field, a generated Lorentz force can be used to promote arc extinguishing during a relay opening sequence, while simultaneously reducing the tendency of the Lorentz forces to interfere with the operation of a solenoid or other switch-activating mechanisms. By using a rotary-based mechanism to establish contact between a contact plate and current-carrying terminals, the likelihood of inadvertent opening of the relay is reduced. Such devices and methods may be used in conjunction with hybrid-powered and electric-powered vehicles.

A variable impedance composition according to one aspect of the present invention comprises a high electro-magnetic permeability powder in an amount from 10% to 85% of the weight of the variable impedance composition, and an insulation adhesive in an amount from 10% to 30% of the weight of the variable impedance composition. The incorporation of high electro-magnetic permeability powder including carbonyl metal, such as carbonyl iron or carbonyl nickel, in the variable impedance composition can not only suppress the overstress voltage, but also dampen the transient current. In contrast to the conventional electrostatic discharge (ESD) device, the relatively high electro-magnetic permeability carbonyl metal powder can reduce arcing as well as lower the trigger voltage of the device. The high electro-magnetic permeability characteristics can also absorb the undesirable electro-magnetic radiation that causes corruption of signal and loss of data.

Disclosed is a parking assistance for a vehicle. In autonomous parking on a path for parking the vehicle, the driver of the vehicle is assisted in a parking maneuver on the path for parking the vehicle by a steering torque applied to the steering wheel. The driver is guided on the path for parking the vehicle by one or two artificial steering stops and the path for parking the vehicle is divided into a maneuvering path in the area of a parking space and an approach path situated prior to the maneuvering path in accordance with the starting position of the vehicle.

The invention provides an electrical contact based on powdered copper and a preparation process thereof. The electrical contact based on the powdered copper is prepared from the following materials in percentage by weight: 0.3 to 7 percent of nickel, 0.1 to 6 percent of boron, 0.1 to 8 percent of tungsten, 0.2 to 10 percent of graphite, 1 to 7 percent of titanium, 0.1 to 6 percent of molybdenum, 0.1 to 8 percent of diamond, 0.2 to 7 percent of lanthanum, 0.5 to 9 percent of aluminum, 0.5 to 8 percent of niobium, 0.1 to 5 percent of silicon, 0.1 to 6 percent of yttrium, 0.1 to 6 percent of chromium, 0.1 to 5 percent of cerium, and the balance of copper powder. The preparation process comprises the steps of mixing, cold pressing and sintering. In the preparation process, a general silver alloy contact is replaced by copper, so that the cost of silver alloy contacts of electric switches is reduced. The electrical contact based on the powered copper has high electrical performance and mechanical properties, and is a cheap substitute product of silver alloy materials of electrical contacts of low-voltage electric switches.

The present invention provides a ceramic cylindrical sputtering target characterized in being a single article having a length of 500 mm or longer and a relative density of 95% or greater. The ceramic cylindrical sputtering target is a single article having a high density and length of 500 mm or longer and therefore eliminates the need to use a stack of multiple sputtering targets in order to obtain a long target. Consequently, when the ceramic cylindrical sputtering target of the present invention is used in a magnetron rotary cathode sputtering target, and the like, there are no or few partitions in the target as a whole and therefore there is little arcing and particle generation during sputtering.

The invention relates to a circuit-breaker automatic closing contact device with high breaking capacity, which comprises a contact support, a rotating shaft, a fixed contact, a rotary dual-breakpoint moving contact installed on the contact support and a contact spring. The fixed contact and the moving contact are symmetrically distributed in relative to the rotating shaft, and an operating mechanism and an electromagnetic mechanism respectively drive the contact support to rotate through a control part of the operating mechanism and a control part of the electromagnetic mechanism of the contact device. Spring fixing shafts are symmetrically arranged on a shell on both sides of the contact support, one end of the contact spring is abutted against the shell, the other end is butted upon a torsion spring contact wire of the contact support, and the contact spring applies a torsion spring force to the contact support in the contact closing direction through the torsion spring contact wire. The automatic closing contact device without exogenic action has high breaking capacity, minimizes the influence of the contact spring on the breaking resistance of the moving contact while not reducing the reliable closing property of the contact, increases the breaking speed and the reliability of the contact and reduces arcing risk.

A plasma based ion implantation apparatus. The apparatus includes a first chamber in which plasma is generated, a coil antenna to generate the plasma in the first chamber, a second chamber in which ions of the plasma are implanted into a target, the second chamber having an incoming port through which the plasma is diffused from the first chamber to the second chamber, a power source to supply high voltage power to the target in the second chamber, and a grounded conductor positioned to face the target seated on the seating table. The first chamber is formed with a ring shape opening of a predetermined width at an upper periphery of the second chamber to communicate with the second chamber.

Embodiments disclosed herein generally relate to an apparatus having an anodized gas distribution showerhead. In large area, parallel plate RF processing chambers, mastering the RF return path can be challenging. Arcing is a frequent problem encountered in RF processing chambers. To reduce arcing in RF processing chambers, straps may be coupled to the susceptor to shorten the RF return path, a ceramic or insulating or anodized shadow frame may be coupled to the susceptor during processing, and an anodized coating may be deposited onto the edge of the showerhead that is nearest the chamber walls. The anodized coating may reduce arcing between the showerhead and the chamber walls and therefore enhance film properties and increase deposition rate.

The invention discloses a construction method for a light steel skeleton special-shaped model suspended ceiling. The construction method includes the following steps that S1, elevation, position identification and paying-off are conducted on all regions of a site; S2, main electromechanical pipelines are installed; S3, a special-shaped model of the suspended ceiling is manufactured and installed; S4, hanging bars, a main keel and an auxiliary keel are installed; S5, auxiliary electromechanical pipelines are installed; S6, glass magnesium boards are used for pre-reinforcing the tail ends of the electromechanical pipelines and gypsum boards are installed; S7, electromechanical point positions at the tail ends of the electrochemical pipelines are tapped; S8, seam putty and overall basic-layer putty treatment is conducted; S9, surface layer coating is conducted on the suspended ceiling. Construction efficiency is high, labor intensity is small, and the constructed special-shaped suspended ceiling has good rigidity and toughness.

An apparatus 20 for microwave vacuum-drying organic materials such as foods and bioactives has a plurality of microwave generators 50 actuated so as to cause interference between their respective microwave streams and evenly distribute the microwave energy across the vacuum chamber 34. The microwave-transparent window 36 in the chamber is arranged so the organic material to be dried is moved across it on a conveyor belt 60 and the microwave energy passing into the chamber 34 immediately encounters the organic materials, thus attenuating the energy and reducing arcing.

A contactor arc suppression system for an electric propulsion vehicle having an on-board diesel-electric power generating system for supplying electric power to a plurality of DC electric traction motors for propelling the vehicle in which the traction motors are operable in an electric power generating mode during electrical braking of the vehicle and the vehicle further has a dynamic braking grid selectively coupled in parallel with the traction motors for absorbing the generated electric power during such electrical braking. The system includes at least one contactor having a pair of contact tips arranged to selectively couple the dynamic braking grid into parallel circuit arrangement with the electric traction motors during electrical braking and a snubber circuit having a diode and a first capacitor connected in series circuit arrangement with the snubber circuit connected in parallel with the contact tips of the contactor. A protection circuit for the diode includes a first resistor and a second capacitor connected in series with the protection circuit connected in parallel with the diode. A second resistor is connected in parallel circuit arrangement with the diode for providing a current discharge path for the first capacitor upon closure of the contact tips.

A method and a connector arrangement for connecting and disconnecting an electrical generator, such as a prime mover driven alternator (10), to a circuit with an existing alternating current such as the mains electricity supply (20).