Inductive coil assembly

• US 20060238930A1
• Filed: 06/21/2006
• Published: 10/26/2006
• Est. Priority Date: 02/04/2003
• Status: Active Grant

• Current Assignee: Philips IP Ventures B.V. (Koninklijke Philips N.V.)
• Original Assignee: David W. Baarman, Terry L. Lautzenheiser
• Inventors: Baarman, David W., Lautzenheiser, Terry L.
• Granted Patent: US 7,411,479 B2
• Time in Patent Office: Days
• US Class Current: 361/38
• CPC Class Codes: A61L 2/10 Ultraviolet radiation
• CPC Class Codes: C02F 1/001 Processes for the treatment of water whereby the filtration technique is of importance C02F1/44 takes precedence; construction of filters in general B01D24/00 - B01D41/00
• CPC Class Codes: C02F 1/008 Control or steering systems not provided for elsewhere in subclass C02F
• CPC Class Codes: C02F 1/325 Irradiation devices or lamp constructions
• CPC Class Codes: C02F 2201/3228 Units having reflectors, e.g. coatings, baffles, plates, mirrors
• CPC Class Codes: C02F 2201/326 Lamp control systems
• CPC Class Codes: C02F 2209/005 Processes using a programmable logic controller [PLC]
• CPC Class Codes: C02F 2209/008 comprising telecommunication features, e.g. modems or antennas
• CPC Class Codes: C02F 2209/40 Liquid flow rate
• CPC Class Codes: C02F 9/20 Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems
• CPC Class Codes: H01F 2005/027 wound on formers for receiving several coils with perpendicular winding axes, e.g. for antennae or inductive power transfer
• CPC Class Codes: H01F 2005/043 having multiple pin terminals, e.g. arranged in two parallel lines at both sides of the coil
• CPC Class Codes: H01F 2005/046 Details of formers and pin terminals related to mounting on printed circuits
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01F 5/02 wound on non-magnetic supports, e.g. formers
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H05B 39/00 Circuit arrangements or apparatus for operating incandescent light sources structurally associated with the incandescent lamps H01K1/62
• CPC Class Codes: H05B 41/24 in which the lamp is fed by high frequency ac, or with separate oscillator frequencyH05B41/26 takes precedence
• CPC Class Codes: H05B 41/36 : Controlling
• CPC Class Codes: H05B 47/20 : Responsive to malfunctions or to light source life; for protection

Abstract

An inductive coil assembly having multiple coils arranged at distinct orientations to provide efficient inductive coupling of power or communications or both to a device when the device is arranged at different orientations with respect to the inductive primary coil. In one embodiment, the inductive coil assembly includes three coils, each oriented along one of the x, y and z axes of a standard Cartesian three-dimensional coordinate system. The three separate coils provide effective transfer of power and communication when the device is at essentially any orientation with respect to the primary coil. In an alternative embodiment, the multi-axis inductive coil assembly of the present invention can function as a primary to inductively transmit power or communication or both over a plurality of magnetic fields at distinct orientations.

Claims

1-45. -45. (canceled)

46. An inductive coil assembly comprising:

first, second and third coils; and

a one-piece bobbin defining three spools for receiving said first, second and third coils, said first spool having an axis extending in a first direction, said second spool having an axis extending in a second direction substantially perpendicular to the first direction, said third spool having an axis extending in a third direction substantially perpendicular to both said first direction and said second direction, said third spool including a plurality of inner guides and a plurality of outer guides, said inner guides and said outer guides being in a non-overlapping disposition in said third direction.

47. The inductive coil assembly of claim 46 wherein said first spool includes a pair of guide walls extending in a direction substantially parallel to said third direction and said second spool including a pair of guide walls extending in a direction substantially parallel to said third direction.

48. The inductive coil assembly of claim 47 wherein said first coil includes a greater number of turns of wire than said second coil and said second coil of wire includes a greater number of turns of wire than said third coil.

49-55. -55. (canceled)