Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7150094 | Method of stiffening an actuator comb and coil assembly A voice coil and actuator yoke assembly is fabricated by deforming the coil to exactly fit the inner perimeter and thickness of the yoke. The comb is placed in a tool that registers the comb with the yoke against the same flat surfaces that will squash the coil. The... | 12/19/2006 |
| 7146714 | Manufacturing a magneto-optical write/read head A method of manufacturing a digital magneto-optical signal write/read head including a thin-film in-plane magnetic coil disposed on an outwardly directed surface of a coil substrate. Coil lead in and coil lead out sections of the coil are extended to an interconnect... | 12/12/2006 |
| 7111384 | Method for manufacturing magnetic head including coil A method for manufacturing a magnetic recording head includes the steps of forming a first lifting layer and a second lifting layer on a bottom core layer, forming an inorganic insulating layer in a gap between the first lifting layer and the second lifting layer, f... | 09/26/2006 |
| 6926588 | Band coil The invention relates to a method of manufacturing a band coil by means of a material-removing process performed on the coils so as to obtain a band coil which has a profile in the direction of the coil axis. Such a process may be a discharge process, an etching pro... | 08/09/2005 |
| 6581270 | Method for preparing the windings for an electric motor The invention relates to a procedure for preparing the windings for an electric motor. The magnetic core (20) of the stator and/or rotor of the motor is provided with slots (24,25) in which winding coils (2; 5,7;15,17) can be fitted. According to the inve... | 06/24/2003 |
| 5781986 | Method of making a magnetic recording/reading head A method for the making of a magnetic recording/reading head comprises the following steps: the making of magnetic excitation wires on or in a first face of a substrate having this first face and a second face opposite the first face; the making, on the f... | 07/21/1998 |
| 5418668 | Thin-film magnetic transducer with multiple yoke-coil interactions and elongated lateral yoke vias A thin film magnetic head, and process for making the same, features a thin film magnetic transducer formed from multiple layers of film and having a magnetic yoke interacting with an electrical coil. The yoke has multiple magnetic flux circuits, deposite... | 05/23/1995 |
| 5327638 | Method of making a vertical recording head for contact and near contact magnetic recording A method of constructing a ferrite magnetic head that can be used for vertical recording. The head is created by first bonding a non-magnetic shoe to the legs of a C-Shaped magnetic core to create a block assembly. A pole surface of the block is then lapp... | 07/12/1994 |
| 5210929 | Method of making a ferrite capped Winchester-style slider An improved slider and magnetic cap assembly which reduces flux loss which retards sensitivity in writing and reading in a magnetic head system. The slider incorporates a body, a partial core, a coil and a cap. The cap is mounted on the upper surface of t... | 05/18/1993 |
| 5067230 | Method for the manufacture of planar magnetic heads by making cavities in a non-magnetic wafer A method of simultaneous manufacture of a plurality of planar magnetic heads on a wafer or a slab made of non-magnetic material designed to be cut out to separate each head. The method can be applied to magnetic heads of the type including a micro-gap for... | 11/26/1991 |
| 4939836 | Method for the fabrication of a magnetic recording/reading head from a magnetic substrate A method for fabricating magnetic recording/reading heads. A substrate made of magnetic material is provided with a groove of a predetermined width. The surface of the substrate bearing the groove becomes the active face for the magnetic head. The face of... | 07/10/1990 |
| 4933209 | Method of making a thin film recording head apparatus utilizing polyimide films A thin film recording head which utilizes polyimide as the coil encapsulant. The polyimide encapsulant is self planarizing and lends itself to processing of the coil vias, magnetic shunt vias and apex tapers. Methods of fabricating a thin film recording h... | 06/12/1990 |
| 4847984 | Method of assembling a flexible circuit magnetic core winding onto a core member A flexible circuit, sufficiently rigid for easy handling, is inserted once into the window of an integrally formed core member for a magnetic or ferrite head assembly. This flexible circuit contains a pattern of several parallel conductors. When the flexi... | 07/18/1989 |
| 4821403 | Method for making a flat magnetic structure for read/write magnetic heads A method of making a flat magnetic structure having coils thereon, said structure including magnetic read/write heads using a flat substrate that has at least one side made of a magnetic material, said method including the steps of:initial machining of th... | 04/18/1989 |
| 4791718 | Method for assembling a magnetic head A method of assembling a magnetic head in which a block of wear-resistant material is placed in an indentation at an upper corner of one or more core holders, over which the recording tape is to slide. Grooves are formed on lateral faces of the core holde... | 12/20/1988 |
| 4774755 | Magnetic head and process for producing same A magnetic head which comprises a pair of head chips each composed of a pair of plate-like magnetic cores superposed on and joined to each other with a spacer interposed therebetween and having a gap at the junction, a pair of base plates joined to the pa... | 10/04/1988 |
| 4739548 | Method of manufacturing magnetic head cores A plurality of magnetic head cores is cut from a preprocessed ferrite core block having a gap formed by means of a fracture method. To this end the core block is notched on a line along which the gap is to be formed. subsequently the core block is subject... | 04/26/1988 |
| 4736210 | Magnetic transducer including a plurality of heads and method for producing the magnetic transducer The invention relates to a method for producing a magnetic transducer including a plurality of heads and a transducer produced thereby. The method comprises placing a magnetic core (such as 17-2) provided with a winding (such as E1-2) in each of the groov... | 04/05/1988 |
| 4594772 | Method of manufacturing composite magnetic transducer The present disclosure relates to the manufacture of instrumentation magnetic transducers of the type including a pair of opposed support brackets having opposed magnetic pole pieces therein, the pole pieces in each bracket having edge faces all lying sub... | 06/17/1986 |
| 4533967 | Multiple leg multichannel magnetic transducer structure and method of manufacturing In the preferred embodiment of the high density multichannel transducer each channel has two assembled corresponding magnetic core portions, each portion having an intermediate and a rear leg portion, respectively. Both core portions are contiguous with a... | 08/06/1985 |
| 3999286 | Method of making multitrack heads A multitrack recording head having a pair of ferrite combs whose teeth are separated at their tips by nonmagnetic gap spacers and whose bases are in abutting relationship. Each tooth of one comb has a wire coil for electrically transmitting signals to or ... | 12/28/1976 |
| 3978523 | Multi-channel dual-gap magnetic head A multi-channel dual-gap magnetic head. The head has a plurality of magnetic head tips which are separated magnetically from each other by non-magnetic materials, and each having two magnetic gaps. A plurality of magnetic back cores are connected to said ... | 08/31/1976 |
