FIELD WINDING

• US 20120188039A1
• Filed: 07/25/2011
• Published: 07/26/2012
• Est. Priority Date: 07/22/2005
• Status: Abandoned Application

• Current Assignee: Winstead Assets Limited
• Original Assignee: Winstead Assets Limited
• Inventors: FOLCKE, Georges, GOUT, Eric, RAOULT, Christophe
• Application Number:
  US13/190,257
• Publication Number:
  US 20120188039A1
• Time in Patent Office: Days
• US Class Current: 336/65
• CPC Class Codes: G06K 19/0723 the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
• CPC Class Codes: G06K 19/073 Special arrangements for circuits, e.g. for protecting identification code in memory protection against unauthorised use of computer memory G06F12/14
• CPC Class Codes: G06K 7/0008 General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
• CPC Class Codes: G06K 7/10316 using at least one antenna particularly designed for interrogating the wireless record carriers antennas in general H01Q1/22
• CPC Class Codes: H01F 5/00 Coils superconducting coils H01F6/06; fixed inductances of the signal type H01F17/00
• CPC Class Codes: H01F 7/20 without armatures cores H01F3/00; coils H01F5/00 ; shaping metal by applying magnetic forces B21D26/14; electromagnets specially adapted for NMR applications G01R33/381
• CPC Class Codes: H01Q 1/2216 used in interrogator/reader equipment
• CPC Class Codes: H01Q 1/2225 used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
• CPC Class Codes: H01Q 7/08 Ferrite rod or like elongated core

Abstract

The invention concerns an inductor comprising a plurality of so-called first conductors (100 to 109) substantially parallel to one another, at least three of said first conductors being substantially mutually equidistant and distributed over a surface (120), and an electric power supply (140) of said conductors adapted to circulate an electric current in the same direction in said conductors.

Preferably, said conductors are more densely distributed at the ends of the surface (120) comprising them.

Preferably, the inductor further comprises a plurality of second substantially parallel conductors perpendicular to the first conductors, the electric power supply circulating an electric current in the same direction on said second conductors.

Preferably, the inductor further comprises a plurality of third conductors forming closed turns, the electric power supply circulating an electric current in the same direction in said third conductors.

Preferably, the electric power supply successively powers the first, second and third conductors.

Claims

1. A device comprising an inductor having a plurality of so-called first conductors substantially parallel to one another, at least three of said first conductors being substantially mutually equidistant and distributed over a surface, and an electric power supply of said conductors adapted to circulate an electric current in the same direction in said conductors.

2. The device according to claim 1, wherein said conductors have a linear part, said linear parts being arranged in a plane.

3. The device according to claim 1, wherein said conductors are more densely distributed at the ends of the surface comprising them.

4. The device according to claim 1, wherein said conductors are less densely distributed at the centre of the surface comprising them.

5. The device according to claim 1, wherein at least some of the first conductors are connected together by conductors forming with them partially superimposed turns.

6. The device according to claim 1, wherein at least some of the conductors connecting together said first conductors surround said first conductors in said surface.

7. The device according to claim 1, wherein at least some of the conductors connecting together said first conductors are on the same side of a plane comprising said first conductors.

8. The device according to claim 1, wherein all of said first conductors are symmetrical with respect to at least one of a plane and a point.

9. The device according to claim 1, wherein at least some of the conductors connecting together said first conductors have a coplanar linear part on the same side of a plane comprising said first conductors.

10. The device according to claim 1, further comprising a plurality of second parallel conductors parallel to one another and substantially perpendicular to the first conductors, said electric power supply adapted to circulate an electric current in the same direction in said second conductors.

11. The device according to claim 10, further comprising a plurality of third conductors forming identical closed turns, said electric power supply adapted to circulate an electric current in the same direction in said third conductors.

12. The device according to claim 11, wherein the third conductors surround said first conductors.

13. The device according to claim 11, wherein said electric power supply is adapted to generate a current alternately on said first, second and third conductors.

14. A product selected from a group consisting of a support, a pallet, a container, a conveyor, a cash register, and a base station, provided with a device comprising an inductor having a plurality of so-called first conductors substantially parallel to one another, at least three of said first conductors being substantially mutually equidistant and distributed over a surface, and an electric power supply of said conductors adapted to circulate an electric current in the same direction in said conductors.