Proximity identification system with lateral flux paths

Details Proximity identification system with lateral flux paths Proximity identification system with lateral flux paths

1986-08-04

1988-11-01

Crosland, Donnie L.

Communications: electrical

Vehicle detectors

Inductive

340933, 340572, 3408253, 235380, 336129, G08G 101

Patent

active

047823429

ABSTRACT:
An electrical proximity identification system which has lateral flux. The system has a reader section with a reader antenna which is comprised of a pair of coils. The coils are located in the same plane and are oriented such that when they are energized by radio frequency power, the flux lines travel between the coils in a direction parallel to, but above and below, said plane. The system also has an identifier section with an identifier antenna. The identifier antenna is positioned such that its axis is parallel to the plane and in line with the flux lines.

REFERENCES:
patent: 4123749 (1978-10-01), Hartmann et al.
patent: 4151405 (1979-04-01), Peterson
patent: 4215342 (1980-07-01), Horowitz
patent: 4308530 (1981-12-01), Kip et al.
patent: 4459474 (1984-07-01), Walton
patent: 4623877 (1986-11-01), Buckens et al.

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