Electromagnetically responsive projectile and system for detecti

Details Electromagnetically responsive projectile and system for detecti Electromagnetically responsive projectile and system for detecti

1974-09-09

1977-12-27

Caldwell, Sr., John W.

Communications: electrical

Digital comparator systems

325102, 325115, 128 2P, 119 1, 102 92, A61M 3100, G01S 902

Patent

active

040657531

ABSTRACT:
A projectile is provided having contained therein a passive electromagnetically responsive device such as a tuned inductive-capacitive circuit. The circuit is preferably detected by stimulating oscillations at the resonant frequency of the circuit by a pulsed electromagnetic field. The projectiles are desirably used to enable remote tagging and detection and/or identification of objects including livestock.

REFERENCES:
patent: 2511409 (1950-06-01), Mayberry
patent: 2896204 (1959-07-01), Gille
patent: 3035262 (1962-05-01), Vantine, Jr.
patent: 3229684 (1966-01-01), Naguno et al.
patent: 3432852 (1969-03-01), Arnold
patent: 3713133 (1973-01-01), Nathans
patent: 3790948 (1974-02-01), Ratkovich
patent: 3810172 (1974-05-01), Burpee et al.
patent: 3893111 (1975-07-01), Cotter
patent: 3948263 (1976-04-01), Drake, Jr. et al.

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