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Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
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| Number | Title | Issue Date |
| 8013706 | System for contactless energy transmission System for contactless energy transmission includes a primary side winding and a secondary side winding that is rotatable relative to the primary side winding, a coil core being provided on the primary side winding, whose sectional view in at least one sectional pla... | 09/06/2011 |
| 7355307 | Rotary transformer for supplying electric power to a superconducting rotor A device for supplying electric energy to at least one superconductor, with the superconductor being cooled in a cooled region to at least one predetermined temperature for achieving superconductivity, includes at least one electric energy source, and a transformer ... | 04/08/2008 |
| 7304559 | Rotary transformer for transmission of electrical energy or information A device for efficient transmission of electrical energy and/or information is built in the manner of a rotary transformer. The cores of this device are made of ferromagnetic rings of a U-shaped cross section of soft iron, or of soft iron core stacks of annular or h... | 12/04/2007 |
| 7199691 | Flat resolver A flat resolver, which has a magnetic path forming a magnetic flux effectively linking to a secondary winding and a detection winding and has a uniform gap between a stator portion and a movable portion so that a resolver signal can be output with high precision, is... | 04/03/2007 |
| 7197113 | Contactless power transfer system In accordance with one embodiment, a contactless power transfer system is provided that comprises a stationary member including a power input configured to receive power at first voltage from a power supply. The system further includes a rotating member rotatably co... | 03/27/2007 |
| 7187823 | Contact-free slip ring for survey instrumentation A contact free rotary transformer assembly can be used to transfer power and information between a stationary portion and a rotatable portion of a laser scanning device. The rotary transformer can consist of a pair of substantially parallel ferrite rings, each havin... | 03/06/2007 |
| 7167068 | Transformer A transformer has a bar-shaped ferrite core, an inner winding wound directly around the ferrite core, an outer winding wound over the inner winding, and a dielectric shield surrounding the outer winding. The outer winding has its circumference covered by a dielectri... | 01/23/2007 |
| 7068015 | Wind power plant having magnetic field adjustment according to rotation speed A wind power plant where the driving shaft communicates with a synchronous generator (3) optionally through a gear (2) and with a transformer, if any, communicating through an AC/DC inverter 7 with an HVDC transmission cable 9. The synchr... | 06/27/2006 |
| 6995485 | Rotary transformer A rotation transmitter for rotor-excited electrical machines, in particular for synchronous generators in motor vehicles, is disclosed, which has a primary part (14) with a primary core (17) comprised of a magnetically conductive material and a primary... | 02/07/2006 |
| 6950633 | Rotary non-contact connector and non-rotary non-contact connector A rotary non-contact connector and a non-rotary non-contact connector enable data transmission in a non-contact mode by radio transmitters-receivers by combining rotary transformers or stationary transformers and radio transmitters-receivers, and providing power sys... | 09/27/2005 |
| 6876120 | Inner core structure of a rotary transformer-type resolver An inner core 62 and a resolver rotor 63 are secured to a rotary shaft 68 so that they are coaxial. A spacer 2, is provided between the inner core 62 and the resolver rotor 63. The spacer 2 and the inner core 62 | 04/05/2005 |
| 6837644 | Dual shaft and rotating machine coupling A dual shaft and rotating machine coupling has a first rotatable shaft, a second rotatable shaft and a rotating machine rotor coupling. The first rotatable shaft has a first shaft connecting flange radially extending outwardly therefrom. The second rotatable shaft i... | 01/04/2005 |
| 6734593 | Alternating current generator with unpolarized rotor An alternating current generator, comprising: a disc shaped rotor and first and second ring shaped stationary cores, coaxially located with the rotor, the rotor further comprising a non-magnetic disc attached to a shaft, with a plurality of low permeability magnetic... | 05/11/2004 |
| 6512437 | Isolation transformer An isolation transformer is provided having primary and secondary cores (2, 4) and primary and secondary coils (3, 5) with the primary coil and the secondary coil being disposed with a gap G provided therebetween. Each of the primary coil and the secondar... | 01/28/2003 |
| 6489874 | Non-contact electric power transmission apparatus A non-contact electric power transmission apparatus including a primary unit and a secondary unit. The primary unit includes a primary core and a power primary winding. A signal secondary winding is wound around the primary core and provided to be apart f... | 12/03/2002 |
| 6483218 | Brushless electric exciter for dynamoelectric machines A brushless exciter comprising a shaft adapted to rotate about a first axis; a cylindrical ferrite core mounted upon the shaft; and a ferrite casing surrounding the ferrite core, having a cylindrical inner surface coaxial with the first axis, and adapted ... | 11/19/2002 |
| 6388548 | Non-contact transformer and vehicular signal relay apparatus using it It is intended to provide a non-contact transformer which simplifies attachment work, causes no sound of rubbing between wires or resistance during steering wheel manipulation, increases the transmission efficiency, and can be manufactured easily by virtu... | 05/14/2002 |
| 6271741 | Rotary inductive coupling A rotary transformer having a stator and rotor each formed by winding a coil on a non-magnetic bobbin and overmolding the bobbin and coil with magnetically permeable particulate material dispersed in a non-magnetic medium preferably selected from the grou... | 08/07/2001 |
| 6218924 | Arrangement for the contactless transmission of an air-bag release signal The arrangement includes a transformer whose primary winding and secondary winding are in separate pot cores which can rotate in opposite directions about the axis of rotation of the steering wheel. To prevent these transformers from transferring energy t... | 04/17/2001 |
| 6147416 | Rotatable connector with turning angle detecting function A rotatable connector with a turning angle detecting function wherein two concentric housing grooves are formed on the opposite surfaces of a stator core and a rotor core which face each other across an air gap; the coils being housing in the housing groo... | 11/14/2000 |
| 6118201 | Resolver with leakage flux absorber A brushless resolver comprising a housing, a rotor rotatably mounted in the housing, a rotary transformer comprising a primary winding carried by the housing and secondary winding on the rotor and operatively associated with the primary winding, a resolve... | 09/12/2000 |
| 5770936 | Noncontacting electric power transfer apparatus, noncontacting signal transfer apparatus, split-type mechanical apparatus employing these transfer apparatus, and a control method for controlling same A noncontacting power transfer apparatus, a noncontacting signal transfer apparatus(to be referred to below as a power coupler and a signal coupler, respectively), and a separate machine apparatus that uses these couplers are disclosed. The power coupler ... | 06/23/1998 |
| 5691687 | Contactless magnetic slip ring A contactless magnetic slip ring is disclosed having a primary coil and a secondary coil. The primary and secondary coils are preferably magnetically coupled together, in a highly reliable efficient manner, by a magnetic layered core. One of the secondary... | 11/25/1997 |
| 5677661 | Rotary transformer A method for the manufacture of a rotary transformer in accordance with the present invention comprises the steps of forming two cylindrical stator ferrite blocks with the same inner diameter but different outer diameters and two cylindrical rotor ferrite... | 10/14/1997 |
| 5608370 | Rotary transformer and method for fabricating the same A rotary transformer includes a rotor core formed by stacking channel parts to form a required number of channels. Each channel part is formed by stacking two kinds of annular magnetic rings so that two rings having the same outside and inside diameters a... | 03/04/1997 |
| 5572178 | Rotary transformer A rotary transformer for aircraft deicing apparatus, the transformer including a primary winding adjacent a laminated primary core, and a secondary winding adjacent a laminated secondary core; at least one of the cores being rotatable with respect to the ... | 11/05/1996 |
| 5519275 | Electric machine with a transformer having a rotating component An electric machine according to various aspects of the invention includes a transformer having a rotating component for transmitting power from a stationary portion of the machine to a rotating portion of the machine, or vice versa. Both the rotating com... | 05/21/1996 |
| 5412366 | Rotary transformer A composite coil member for use in a rotary transformer is disclosed which is easily assembled and easily fitted in a transformer core of the rotary transformer. A plurality of coaxial conductive coils 4 are formed photolithographically on a plurality of ... | 05/02/1995 |
| 5400005 | Toroidal transformer with magnetic shunt A transformer or inductor is made by wrapping a magnetic core material about a toroid-like structure made up of one or more electrical windings. A ferroresonant transformer may be constructed by including a slotted washer between primary and secondary win... | 03/21/1995 |
| 5359312 | Rotary transformer assembly for rotary head drum device A rotary transformer assembly of a rotary head drum device, comprising a plurality of concentric circular shielding walls for isolating adjacent pairs of channels from each other so as to prevent a leakage of electromotive force between the pairs of chann... | 10/25/1994 |
| 5347256 | Rotary transformer Disclosed is a rotary transformer transmitting signals without any physical contact between its rotary part and its stationary part. In the rotary transformer, cores having different frequency characteristics are integrally combined so that signals having... | 09/13/1994 |
| 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 |
| 5319527 | Illuminated instrumentation display An illuminated apparatus comprises a fixedly mounted air core gage having a spindle which rotates in response to signals provided to the air core gage, a first coil fixably mounted with respect to the air core gage having a first axis coaxial with the spi... | 06/07/1994 |
| 5239288 | Resolver having planar windings A printed circuit resolver produces voltage outputs that vary according to sine and cosine functions with the angular position of a rotor winding. Each resolver winding is planar and comprises at least two planar multi-turn coils formed on a disk. Each co... | 08/24/1993 |
| 5191309 | Rotary transformer The rotary transformer (1) has an inner core portion (3) which is enclosed by an outer core portion (5). The core portions (3, 5) are formed as hollow bodies of revolution of a ferromagnetic material which are rotatable with respect to one another about a... | 03/02/1993 |
| 5055814 | Displacement detector The disclosed displacement detector uses a printed circuit board extending through a comparatively uniformly magnetized gap of a core. The core is essentially a closed loop of magnetic material enclosing a hollow space, and a magnetic material leg extends... | 10/08/1991 |
| 5055775 | Transmission device An apparatus for tranmitting signals that can be broken down into at least one AC voltage component between a rotor and a stator from a sender unit to a receiver unit, with the help of annular coils, the coil windings of which form components of the sende... | 10/08/1991 |
| 4914390 | Transducer for determining the instantaneous relative angular positions between two members A transducer measures the angular relationship between a drive and a driven member throughout a range of relative angular positions therebetween. The transducer provides a signal indicative of that angular relationship, and the signal can be transmitted t... | 04/03/1990 |
| 4829401 | Rotating transformer with foil windings The transformer comprises a rotor core (1) in the form of a circular ferromagnetic disc which is rotatable about its axis (5), and a stator core (3) in the form of a circular, stationary ferromagnetic disc which is coaxial with the rotor core. The facing ... | 05/09/1989 |
| 4754180 | Forceless non-contacting power transformer A transformer for coupling electrical power from a stationary location to a moving location with a minimum of disturbance forces between the stationary and moveable components. The transformer is particularly adapted to coupling power to a magnetically su... | 06/28/1988 |
