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...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 8125208 | Transformer device utilizing an air gap for non-contact energy transmission from the primary side to the secondary side A device and method for non-contact transmission of electrical energy by means of a transformer (1) comprising at least a primary side (2) and at least a secondary side (8), and where resonance is set up in a circuit comprising the primary windi... | 02/28/2012 |
| 7339453 | Differential mode inductor with a center tap A differential mode inductor includes a first inductor lead that receives a current. A first arm receives the current from the first inductor lead. A center tap receives the current from the first arm. A second arm receives the current from the center tap. The secon... | 03/04/2008 |
| 7315231 | Electrical reactor assembly having center taps An electrical reactor assembly and method of assembly is disclosed. The reactor is formed from a combination of a magnetic T-core and a pair of magnetic L-cores. A plurality of comb-like separators is placed over a vertical portion of the T-core. A wire, with a rect... | 01/01/2008 |
| 7282904 | Device for measuring the intensity of a strong current passing through a wire The device for measuring the intensity (1) of a strong current passing through a wire (1) comprises a magnetic sensor (2) in the form of a loop surrounding the wire (1), and a turn (3) of conductive material surrounding the wire ( | 10/16/2007 |
| 7268991 | Electrical circuit protection system A system to protect electrical circuits from rapid changes of voltage associated with a fault in an electrical load comprises an inductor placed in series between a drive circuit and load. The inductor is designed to be inefficient or lossy when the inductor core is... | 09/11/2007 |
| 7259650 | Magnetic element A magnetic element including coils; a first core and a second core each of which has a planar plate portion, outer leg portions and a middle leg portion which is inserted into aforesaid coil; and an intermediate core to form a closed magnetic circuit which is dispos... | 08/21/2007 |
| 7176774 | Differential mode inductor with a center tap A differential mode inductor includes a first inductor lead that receives a current. A first arm receives the current from the first inductor lead. A center tap receives the current from the first arm. A second arm receives the current from the center tap. The secon... | 02/13/2007 |
| 7164265 | Bearing assembly with rotation sensing device A bearing unit for a vehicle wheel hub is associated with a rotation sensing device and an electromagnetic inductive coupling. The rotation sensing device comprises an impulse ring (18) secured for rotation with the rotatable race (13) of the bearing u... | 01/16/2007 |
| 7095214 | Systems and method for boosting output of an alternator Disclosed herein are two techniques, neutral point switching and field voltage boost, that will increase the output of today's 12 volt automotive electrical systems in vehicle idle conditions solely by the addition of circuitry. Neutral point switching enables the f... | 08/22/2006 |
| 7085115 | Non-ferrous surge biasing coil having multiple pairs of coils positioned at angles to one another A surge suppression device includes a first and second coil positioned in close proximity to one another such that the windings of each coil are disposed at an angle thereto. In a preferred embodiment, the coils are disposed such that the windings of each coil are p... | 08/01/2006 |
| 6995643 | Magnetically biasing bond magnet for improving DC superposition characteristics of magnetic coil In order to provide an inductance part having excellent DC superposition characteristic and core-loss, a magnetically biasing magnet, which is disposed in a magnetic gap of a magnetic core, is a bond magnet comprising magnetic powder and plastic resin with the conte... | 02/07/2006 |
| 6924631 | Limiting ring current in short circuit between adjacent partial wingings by increasing leakage impedance Apparatus for regulating an electric voltage in at least one of electric supply networks and consumer units. The apparatus includes a regulating transformer arranged between a network node and at least one end consumer. The regulating transformer utilizes a primary ... | 08/02/2005 |
| 6906608 | Magnetic core including magnet for magnetic bias and inductor component using the same An inductor component according to the present invention includes a magnetic core including at least one magnetic gap having a gap length of about 50 to 10,000 μm in a magnetic path, a magnet for magnetic bias arranged in the neighborhood of the magnetic gap in ord... | 06/14/2005 |
| 6762594 | Limiting ring current in short circuits between adjacent partial windings by increasing leakage impedance The invention relates to a method for regulating the electrical voltage in electrical supply networks and/or consumer units and a device for carrying out said method. A regulating transformer (3) is inserted between a network node (1) in the supply net... | 07/13/2004 |
| 6483279 | Device for attenuating parasitic voltages A reactance coil (1) has an annular core (2) on which reactance coils are wound. Said reactance coils (3) are divided up into coil sectors 6 (4) that are separated from each other by means of gaps (5) in the windings. The gaps (5) in the windings reduce r... | 11/19/2002 |
| 6384587 | Non-contact signal and power transmission apparatus Non-contact signal transmission apparatus provides signal transmission between a main unit and an auxiliary unit via electromagnetic induction. A set of power cores having hollow sections are provided as a pair at corresponding positions of the main unit ... | 05/07/2002 |
| 6358432 | Composite magnetic material and inductor element A composite magnetic material comprises a ferrite powder and a resin, in which the ferrite powder comprises a cobalt substituted Y type hexagonal ferrite (2BaO.2CoO.6Fe2 O3) or cobalt substituted Z type hexagonal ferrite (3BaO.2CoO.1... | 03/19/2002 |
| 6359424 | Switching circuit for generating pulsed power A switching circuit for generating pulsed power including a plurality of capacitors connected in parallel with first and second output terminals, a plurality of series circuits of a primary conductor and a static induction thyristor connected in parallel ... | 03/19/2002 |
| 6330171 | LC filtering with prebiased inductor for a chopping circuit The invention relates to a control circuit, in particular for a load in an automotive vehicle, comprising a chopping circuit, at least one LC filter (F1) means (20) opposing the saturation of the inductor, (L1) of this LC circuit, wherein these latter mea... | 12/11/2001 |
| 5886516 | Series resonant converter transformer assembly having integral inductor tank elements A transformer assembly in which an isolation transformer and two additional inductor elements of a series/parallel resonant converter are physically integrated in a cost and space-efficient design. The transformer and two inductors are integrated through ... | 03/23/1999 |
| 5770982 | Self isolating high frequency saturable reactor The present invention discloses a saturable reactor and a method for decoupling the interwinding capacitance from the frequency limitations of the reactor so that the equivalent electrical circuit of the saturable reactor comprises a variable inductor. Th... | 06/23/1998 |
| 5747981 | Inductor for an electrical system In one embodiment of the present invention, an inductor comprises a core defining a first electromagnetic path, a second electromagnetic path and a third electromagnetic path, the third electromagnetic path substantially closing the first and second elect... | 05/05/1998 |
| 5635828 | Active filter circuit and power supply apparatus including same An active filter circuit including a smoothing filter including a choke coil comprising a magnetic core composed of a nanocrystalline alloy and having a magnetic gap in at least one portion thereof and at least one conductive wire wound around the magneti... | 06/03/1997 |
| 5512818 | Voltage proportional replication device using magnetoresistive sensing elements In accordance with the present invention, a voltage proportional replication device comprises an input electromagnet responsive to an input voltage for producing a magnetic field in proportion to the input voltage; and a first magnetoresistive sensing ele... | 04/30/1996 |
| 5440225 | Core for coil device such as power transformers, choke coils used in switching power supply The invention pertains to a core for a coil device of a switching power supply which can avoid accidental breakage of the portion where the core cross-sectional area narrows. When one core segment is rotated 180 degrees about its center axis in the long d... | 08/08/1995 |
| 5379207 | Controlled leakage field multi-interphase transformer employing C-shaped laminated magnetic core A multi-interphase transformer for use in power conditioners such as cycloconverters wherein polyphase input power sources with more than six phases and requiring interphase transformers for paralleling the polyphase outputs is disclosed, Such multi-inter... | 01/03/1995 |
| 5342497 | Electrophoresis system The invention provides an electrophoresis system which separates charged chemical substances by means of applying an electrical potential across a buffer solution which includes those chemical substances. The system of the invention includes a power suppl... | 08/30/1994 |
| 5335163 | Power supply circuit with integrated magnetic components A magnetic circuit with several magnetic components integrated on one or more common magnet cores is utilized in a current supply circuit known per se. The circuit comprises a transformer, the secondary winding ends of which are connected to uniform elect... | 08/02/1994 |
| 5327073 | Load-dispatching apparatus having improved power supply cut-off A non-contact type load-dispatching equipment having a power supply side core and a receiving side core both provided with a plurality of teeth wound by winding, each of teeth top surfaces formed by respective teeth is oppositely positioned to each other ... | 07/05/1994 |
| 5282120 | Converter for providing boost voltage for a flash discharge lamp serving as a photographic light The present invention has an object to develop a converter allowing dielectric strength of a booster transformer to be reduced by half for miniaturization and security thereof. To achieve this object, the booster transformer is provided with first and sec... | 01/25/1994 |
| 5249113 | DC to DC converter of the push-pull type with MOSFET switches The converter comprises a transformer having two primary windings; a voltage source having one of its terminals connected to the center tap; and two switches connected in series between the other terminal of the voltage source and a respective one of the ... | 09/28/1993 |
| 5221892 | Flux compression transformer A direct current flux compression transformer includes a magnetic envelope having poles defining a magnetic axis and characterized by a pattern of magnetic flux lines in polar symmetry about the axis. The magnetic flux lines are spatially displaced relati... | 06/22/1993 |
| 5122947 | Flyback transformer having coil arrangement capable of reducing leakage of magnetic flux A flyback transformer comprising a magnetic core assembled by joining together a pair of first and second U-shaped core halves each having two leg portions with end surfaces respectively joined in mutually abutting confrontation with respective gap spacer... | 06/16/1992 |
| 4980811 | Power source apparatus A power source apparatus includes a transformer having a plurality of paired winding portions of primary and secondary windings wound around cores divided by a gap, a driver, connected to the primary winding of the paired winding portion, for switching en... | 12/25/1990 |
| 4904926 | Magnetic motion electrical generator A magnetic motion electrical generator includes an electrical winding defining a magnetically conductive zone having bases at each end, the winding including elements for the removing of an induced current therefrom. The generator further includes two pol... | 02/27/1990 |
| 4864478 | Integrated-magnetics power converter Novel switched mode boost-buck integrated magnetic power converters are disclosed featuring two winding bobbins, a new boost section with enhanced gain, means for operating the converter in a continuous mode of energy storage under minimum output loading ... | 09/05/1989 |
| 4853668 | Integrated magnetic converter core Novel switched mode boost-buck integrated magnetic power converters are disclosed featuring unique core shapes, two winding bobbins, a core which provides electro-magnetic shielding, and cores which are readily adapted to accept a wide range of converter ... | 08/01/1989 |
| 4841428 | Non-saturating magnetic amplifier controller A magnetic amplifier including a magnetic core having a primary leg, a secondary leg, and a control leg. A primary winding is wound about the primary leg of the magnetic core for generating a non-saturating magnetic AC flux in the magnetic core, and a sec... | 06/20/1989 |
| 4684882 | Electrical transformer having a solid core surrounding winding in a loop configuration An electrical transformer having a rectangular core of solid magnetic material, forming a circular or rectangular-section shell in which primary and secondary windings are located. The corners of the core may be open to lighten the transformer and increas... | 08/04/1987 |
| 4517509 | Inductive device An induction device comprises a winding support with a base having connection points. The upper side of the base carries a centering member having an exterior surface that defines either a cylindrical or conical surface co-axial with the cylindrical centr... | 05/14/1985 |
