Abstract: The invention relates to a solenoid valve made using certain materials which is capable of operation at high frequencies and which can be made as a compact unit. The plunger (1) is made from an electromagnetic material having a saturation flux density greater than 1.2 Tesla preferably more than 1.6 Tesla, the bore leading from the valve head chamber (14) to the nozzle orifice (12) has a length to diameter ratio of less than 5:1 preferably between 2:1 and 4:1 and the nozzle orifice (12) has a diameter of 80 micrometer or less. The invention also relates to method for operating a drop on demand ink jet printer incorporating such a valve.
Type:
Grant
Filed:
June 14, 2006
Date of Patent:
August 12, 2008
Assignee:
Willett International Limited
Inventors:
David Andrew Horsnell, Matthew Brian Tomlin, Ammar Lecheheb, Oliver John Prime, Michael John Fox, Christopher Michael Bates
Abstract: A treatment device for providing a magnetic treatment and a radiofrequency treatment to a body area of a patient. The device includes an energy storage device for storing electric energy, a magnetic field generating device, and a switching device to discharge the electrical energy from the energy storage device to the magnetic field generating device, such that a time-varying magnetic field is generated and provides muscle contraction to a muscle in the body area of the patient. The time-varying magnetic field may have a magnetic field density in a range of 0.1 Tesla to 7 Tesla and a repetition rate in a range of 0.1 Hz to 700 Hz. The device may also include a radiofrequency electrode to generate radiofrequency waves to heat a tissue in the body of the patient. A body of the radiofrequency electrode may include a plurality of openings in a range of 5 to 1000 openings.
Abstract: A method and apparatus for the selective deposition of metal layers on a substrate. At least one metal layer is deposited in a self-aligned manner on conductive regions on the surface of isolating or semiconductive substrates, for which purpose the conductive regions are arranged facing a metal plate having at least one layer of the metal to be deposited, and Tesla currents are generated between the metal plate and the regions to be coated. The apparatus for implementing the method includes a metal plate, a Tesla transformer which is coupled to the metal plate or to a metal grid, spaced apart from the surface of the metal plate away from the conductive regions, having closely adjacent and regularly distributed spikes pointing towards the metal. This method may be used, for example, to produce conductors on or in ceramic modules, circuit cards and semiconductor elements.
Type:
Grant
Filed:
September 10, 1984
Date of Patent:
February 11, 1986
Assignee:
International Business Machines Corporation
Inventors:
Thomas Bayer, Georg Kraus, Ulrich Kuenzel, Gisela Renz, Rolf Schaefer
Abstract: Systems and methods presented herein provide for igniting or disabling explosive devices through the generation of strong electrical fields and/or the discharge of electrical energy. In one embodiment, a remotely controlled vehicle is provided to remotely detonate or disable improvised explosive devices. The vehicle may contain a high-voltage power supply powering a Tesla coil. The secondary coil of the Tesla coil is attached to an electrode that is swept across an area where an explosive device may be present. The strong electric field around the electrode may induce current within an explosive device or wires connected thereto resulting in the explosive device being ignited or disabled. Discharges from the electrode may directly ignite explosive material or disable detonation control circuitry. The electrode may be located distal to the vehicle and the vehicle itself may be hardened to enhance survivability in the event of an explosion in proximity to the electrode.
Type:
Application
Filed:
May 6, 2011
Publication date:
September 4, 2014
Inventors:
Richard J. Adler, Vernon Michael Weeks, Michael Knight Wiley, Clinton Scott Caldwell
Abstract: Apparatus and method that includes amplifiers for transceiver antenna elements, and more specifically to power amplifying an RF (radio frequency) signal using a distributed power amplifier having electronic devices (such as field-effect transistors) that are thermally and/or mechanically connected to each one of a plurality of antenna elements (also called coil elements) to form a hybrid coil-amplifier (e.g., for use in a magnetic-resonance (MR) imaging or spectroscopy machine), and that is optionally adjusted from a remote location, optionally including remotely adjusting its gains, electrical resistances, inductances, and/or capacitances (which controls the magnitude, phase, frequency, spatial profile, and temporal profile of the RF signal)—and, in some embodiments, the components are compatible with, and function in, high fields (such as a magnetic field of up to and exceeding one tesla or even ten tesla or more and/or an electric field of many thousands of volts per meter).
Type:
Application
Filed:
September 9, 2010
Publication date:
March 15, 2012
Inventors:
John Thomas Vaughan, JR., Charles A. Lemaire