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| Number | Title | Issue Date |
| 7262700 | Inductive powering surface for powering portable devices An inductive powering device provides power to a portable device via inductive coupling between primary coils in the surface of the powering device and a secondary coil in the portable device. The portable device includes a passive locator device, such as an RFID de... | 08/28/2007 |
| 6950003 | Device useful for signal transfer from static surface to rotating surface and viceversa A device useful for transferring signals from static surface to a rotating surface, said device comprising a pair of pot cores acting as a primary and secondary core and said primary pot core being wound with ‘N1’ number of turns and said secondary pot core bein... | 09/27/2005 |
| 6859126 | Noncontact transformer A non-contact transformer includes a transformer component provided on the floor of a housing, a printed circuit board on the transformer component, and an empty core space is formed within the transformer component wherein deformation of the housing is prevented th... | 02/22/2005 |
| 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 |
| 6326713 | A.C. electrical machine and method of transducing power between two different systems A structure for an a.c. electrical machine and method of transducing power between two different systems. The machine comprises two electrically balanced transformers which are generally, but not exclusively, three phase. Initially the transformers are in... | 12/04/2001 |
| 6307766 | Contactless power system A contactless power supply device having a stationary unit and a movable unit that moves linearly in relation to the stationary unit. The stationary unit comprises a primary conductor having a power supply for supplying high frequency alternating current,... | 10/23/2001 |
| 5737211 | Linear-motion contactless power supply system A linear-motion contactless power supply device for supplying electrical power from a stationary unit to a movable unit without direct contact; the stationary unit being a cylindrical primary conductor to which a high-frequency alternating current is supp... | 04/07/1998 |
| 5341280 | Contactless coaxial winding transformer power transfer system A contactless power transfer system, especially for powering electric loads, hazardous loads or underwater loads and the like. A converter supplies high frequency power to a conductor loop. A coupling sheath or link has a core-mounted conductor at least p... | 08/23/1994 |
| 5301096 | Submersible contactless power delivery system A submersible contactless power transfer system, especially for powering underwater electric loads, including movable loads, such as underwater vehicles, elevators, or worksite equipment. A converter supplies high frequency power to a conductor loop. A co... | 04/05/1994 |
| 5293308 | Inductive power distribution system A contactless inductive power distribution system operating at 10 KHz has a self tuning resonant power supply connected to a resonant primary conductive path comprising a pair of parallel litz wire conductors each encapsulated within an insulated sheath a... | 03/08/1994 |
| 4924045 | Push button for a value input keyboard A push button for a keyboard wherein a detent, provided at the keyboard base on the side opposite to that of a guidance sleeve, is designed centrally to the passage aperture of the guidance sleeve, a lug is molded on the side of the keyboard base carrying... | 05/08/1990 |
| 4544821 | Welding apparatus using transformer with movable secondary and its method of manufacture and use A welding apparatus includes an improved transformer having a U-shaped secondary winding movable therein and guided by means external to the transformer. One leg of the U-shaped winding is flexibly connected to a first welding electrode carried by the pis... | 10/01/1985 |
| 4507639 | Inductive position sensor A non-contacting position sensor has an exciting coil in a plane and has a sensing coil in an intersecting plane so sensing coil portions are symmetrical around an exciting coil portion in mutually inductive relation to that portion of the exciting coil p... | 03/26/1985 |
| 4305399 | Miniature transducer A pressure or force transducer capable of miniaturization. Preferably, the transducer takes the form of a "contact lens" and is applied to the eyeball to permit intra-ocular pressure to be measured.... | 12/15/1981 |
| 4117436 | Torqueless relatively moving transformer windings A transformer for coupling between relatively moving elements having a limited degree of motion without inducing torques or forces between the elements as the result of fluxes coupling transformer windings. The transformer includes a primary and secondary... | 09/26/1978 |
| 3961243 | Inductive displacement transducer using a bridge circuit having a stable voltage phase in the diagonal of the bridge An inductive displacement transducer comprising a current measuring bridge circuit including a pair of adjustable electrical resistors coupled in series relationship in one half thereof, and a pair of series coupled induction coils and a movable magnetic ... | 06/01/1976 |
