Self-contained estrous detection tag

Details Self-contained estrous detection tag Self-contained estrous detection tag

1982-02-04

1984-06-19

Malzahn, David H.

Boots, shoes, and leggings

119 1, 128738, 377 6, A61B 510

Patent

active

044556101

ABSTRACT:
A tag suitable for attachment to an animal includes a programmed microprocessor which monitors the activity of the animal. Activity is measured by counting the closures of a mercury switch, and when the current activity exceeds a reference activity by a preset amount, a light emitting diode is energized. Four light emitting diodes are provided to indicate four separate levels of activity.

REFERENCES:
patent: 4112926 (1978-09-01), Schulman et al.
patent: 4117834 (1978-10-01), McPartland et al.
patent: 4151831 (1979-05-01), Lester
patent: 4192000 (1980-03-01), Lipsey
patent: 4247758 (1981-01-01), Rodrian
patent: 4353375 (1982-10-01), Colburn et al.
patent: 4367527 (1983-01-01), Desjacques

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