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| Number | Title | Issue Date |
| 7362015 | Apparatus and method for making an electrical component This invention relates to a transformer and more particularly, to a system and method for making a transformer utilizing dynamic magnetic compaction. A coil is placed in a conductive container, and a conductive powder material, such as ferrite, is placed in the cont... | 04/22/2008 |
| 7300615 | High frequency transformers and high Q factor inductors formed using epoxy-based magnetic polymer materials An electrical component in the form of an inductor or transformer is disclosed which includes one or more coils and a magnetic polymer material located near the coils or supporting the coils to provide an electromagnetic interaction therewith. The magnetic polymer m... | 11/27/2007 |
| 7227434 | Tuning screw assembly The present invention relates to a tuning screw assembly comprising a sleeve (100) with internal threads for engaging a tuning screw (200) having external threads. The sleeve comprises a first threaded portion (32) which is axially displaced in ... | 06/05/2007 |
| 7183887 | Control means and method of controlling a current through a coil An electronic circuit comprising means (CMNS) for controlling a current (IL) through a coil (L) for the generation of a magnetic field (H). The means (CMNS) comprise means (DMNS) for the determination of a parameter which is a measure for the value of the resistance... | 02/27/2007 |
| 6922127 | Raised on-chip inductor and method of manufacturing same A raised on-chip planar inductor. An inductor is fabricated on a substrate. The inductor, except for an anchoring extremity, is lifted from the substrate, preferably by application of a magnetic field to a magnetic layer formed on the inductor. The lifting of the in... | 07/26/2005 |
| 6567249 | Transformer with electrical isolation protection and power supply unit or voltage converter with a transformer of this type A invention relates to a transformer having a primary coil and a secondary coil, with a ferromagnetic core inserted in a coil former. The alternating current resistance of the primary coil (3) drops on reaching a triggering temperature (TC) which lies abo... | 05/20/2003 |
| 6362714 | Multi-part reactive device and method A multi-part reactive device preferably includes a substrate with a first conductive area and a second conductive area. A first conductive element with a first terminal is connected to the first conductive area. The first conductive element has a second t... | 03/26/2002 |
| 6276348 | Ignition coil assembly with spool having ramps at both ends thereof An ignition coil assembly adapted to be mounted directly in a plug hole of an internal combustion engine. The coil assembly includes a primary coil and a secondary coil. The spool upon which the secondary coil is wound is cylindrical in shape and has ramp... | 08/21/2001 |
| 6246229 | Method and apparatus for controlling the temperature stability of an inductor using a magnetically coupled metallic object A method and apparatus for controlling temperature stability of an inductor by using a magnetically coupled metallic object is disclosed in which a metallic object is magnetically coupled to the inductor by a magnetic field emanating therefrom. In one emb... | 06/12/2001 |
| 5789918 | Temperature compensated differential transformer and a measuring device using the same A differential transformer includes a primary coil for excitation and first and second secondary coils for detection which can be wound up on an outer surface of a bobbin made of a non-magnetic substance. In the bobbin, i.e., in a differential coil compos... | 08/04/1998 |
| 5384448 | Thermally stable solenoid utilizing wound electric heating wire A thermally stable solenoid including a heater coil and an inductive coil wound around the same axis. The current in the heater coil is controlled by the current in the inductive coil through a control circuit. The heater coil is energized in such a way a... | 01/24/1995 |
| 5115193 | Inductive linear displacement transducer and temperature-compensating signal processor A transducer system is provided including an inductive linear displacement transducer connected to a temperature-compensating signal processor. The signal processor includes (a) an amplitude-variable, frequency-stable device providing a modulated D.C. cur... | 05/19/1992 |
| 5089930 | Temperature compensated linear variable transformer A differential transformer is provided comprising an elongated bobbin having primary and secondary coils wound about separated sections. A ferromagnetic armature is movably disposed within a core of the bobbin for movement between the separated sections. ... | 02/18/1992 |
| 4810990 | Transducer with apertures in tubular conductor A variable inductance transducer includes a winding which is wound about a cylindrical former and a tubular member formed from electrically conductive material which is located about the winding and is movable axially relative thereto. The tubular member ... | 03/07/1989 |
| 4794360 | Inductive device having a core of an amorphous material An inductive device comprising a ferromagnetic core which has two approximately U-shaped core halves (9, 11) connected together with their limbs (9', 11'; 9", 11") facing each other so that they enclose a core window (17). Each core half (9, 11) is constr... | 12/27/1988 |
| 4704578 | Thermal compensation method for a magnetic circuit having an oscillating circuit with an inductance coil The present invention involves a thermal compensation procedure for magnetic circuits, such as those used in security devices detecting metallic masses, whose losses increase as a function of ambient temperature. According to the invention a body is place... | 11/03/1987 |
| 4467305 | Gas/vapor cooled electromagnetic induction machine A gas/vapor electromagnetic induction machine comprises an annular coil container including two coaxial electrically insulating cylinders connected at lower ends to an annular bottom plate and coaxially disposed around an iron core within an enclosed tank... | 08/21/1984 |
| 4267508 | Apparatus for non-contact measurement of distance from a metallic body using a detection coil in the feedback circuit of an amplifier An apparatus for non-contact measurement of the distance or gap between a detection coil and a metallic body arranged in an opposing relation with the detection coil, includes a differential amplifier having one input terminal connected to a reference osc... | 05/12/1981 |
| 4253079 | Displacement transducers employing printed coil structures There is disclosed a displacement transducer which comprises a plurality of planar circuit boards, each having a coaxial central aperture. Each of said boards having disposed thereon at least one spiral conductive structure which manifests a predetermined... | 02/24/1981 |
| 4205217 | Automatic weld line copying apparatus An automatic weld line copying apparatus has a non-contact type sensor including a core wound with an exciting primary winding which in turn is wound with a secondary winding a plurality of secondary coils differentially. The sensor is compact and able to... | 05/27/1980 |
| 4159502 | Electronic compensation for temperature variation of gyroscope damping A signal compensator is combined with a second order system, for example, a fluid damped rate gyroscope, which produces a signal in response to the movements of a damped member for providing an output signal which is indicative of the input to the second ... | 06/26/1979 |
| 4123735 | Induction-type meter for measuring mechanical quantities An induction-type meter for measuring mechanical quantities, comprising a first converter to convert the controlled parameter into a displacement and having elements adapted to be moved relative to each other, and a second converter to convert the displac... | 10/31/1978 |
| 3992690 | Composite electromagnetic coil This electromagnetic coil is composed of concentric multi-turn windings in magnetic aiding relationship, one winding being formed of copper wire and the other of wire made of copper contaminated with a minor percentage of a metal having a different coeffi... | 11/16/1976 |
| 3962919 | Temperature compensated inductive liquid metal level detection system A temperature compensated inductive liquid metal level detection system and a preferred probe structure is detailed. The temperature compensation is provided by provision of a separate temperature compensation coil as part of the inductive probe.... | 06/15/1976 |
| 3947794 | Magnetic core assemblies with adjustable reluctance as a function of temperature A metal strip on a magnetic core body, provided with an air gap, for a coil means, is connected to a surface of the magnetic material such that an assembly similar to a bimetal is formed. Variations in temperature then cause variations of the length of th... | 03/30/1976 |
| 3939403 | Device for maintaining constant the temperature of a coil fed by an A.C. current source A measuring coil comprises two windings, each being formed by winding simultaneously two insulated wires having the same size, the two wires of each winding extending side by side. The windings formed by the single turns of the wires in each winding are i... | 02/17/1976 |
