Quotables
"Inventing is a combination of brains and materials. The more brains you use, the less material you need."
Charles Kettering
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7304334 | Silicon carbide bipolar junction transistors having epitaxial base regions and multilayer emitters and methods of fabricating the same Bipolar junction transistors (BJTs) are provided including silicon carbide (SiC) substrates. An epitaxial SiC base region is provided on the SiC substrate. The epitaxial SiC base region has a first conductivity type. An epitaxial SiC emitter region is also provided ... | 12/04/2007 |
| 7259651 | Energy storage coil An energy storage coil comprises a core having an electrical conductor wound thereabout in a plurality of turns. The turns define a main zone and at least one first auxiliary zone extending along the core. The main zone has a first end and a second end. The turns in... | 08/21/2007 |
| 7242275 | Variable inductor A variable inductor which avoids electrical breakdown of the insulation in the control windings when used in high power applications includes a core formed of a permeable magnetic material, the core having three legs, including a center leg and two outer legs. A mai... | 07/10/2007 |
| 7221235 | Variable reluctance ferrite core A device, system, and method for suppressing electromagnetic interference (EMI). In one embodiment, an EMI suppression device includes a compound ferrite core having an inner ferrite core and an outer ferrite core. The inner core includes a through hole in which a c... | 05/22/2007 |
| 6563412 | Rotary variable differential transformer A rotary variable differential transformer apparatus for determining angular position of a rotor includes a stator support structure, a first pair of magnetically permeable stator elements and a second pair of magnetically permeable stator elements. The f... | 05/13/2003 |
| 4634126 | Device for converting the amount of a mechanical displacement into electrical signal A transducer converts the amount of mechanical displacement of a member into an electrical signal by magnetic induction. Two fixed coils different in winding direction from each other are spaced apart from each other by a suitable distance and connected i... | 01/06/1987 |
| 4540967 | Molded transformer with grounded electrically conductive layer This invention relates to a molded transformer whose windings are cast-insulated with a cast resin, and consists in disposing an electrically conductive layer within the resin insulation of the winding and grounding the conductive layer, thereby to enhanc... | 09/10/1985 |
| 4460884 | Transformer comprising a magnetic screen A transformer including a lamination core of band iron and a magnetic screen which consists of a wound iron band arranged around the lamination core (5) and which is secured to the core by means of expansion wedges provided in the space between the core a... | 07/17/1984 |
| 4167719 | Variable ratio transformer An adjustable output transformer using a pair of adjacent facing pot cores, the first of which carries both primary and secondary windings, the second having only a shorted winding around one leg. The shorted winding inhibits flux through its leg and the ... | 09/11/1979 |
| 4039929 | Inductive transducer for rectilinear or rotational displacement The inductance of a coil wound on one end of an elongated rectangular core with an elongated central window is caused to vary by the displacement of a conducting plate or ring arrangement lengthwise of the core. The other end of the core may also be wound... | 08/02/1977 |
| 3991393 | Servomechanism control cylinder An improved servomechanism control cylinder has a housing and a position feedback system contained in the housing. Movement of a piston of the control cylinder moves a shield relative to a fixed electrical coil for changing the signal delivered by the pos... | 11/09/1976 |
