Apparatus for providing a remotely discernible signal upon partu

Details Apparatus for providing a remotely discernible signal upon partu Apparatus for providing a remotely discernible signal upon partu

1990-01-04

1991-02-19

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

128775, 340573, G01V 904

Patent

active

049946650

ABSTRACT:
A device to detect parturition of a pregnant livestock or zoological animal which may be inserted into the birth canal of the pregnant animal comprises a transparent housing having an internal cavity adapted to hold therein a photo-detecting element which is dormant while in the dark birth canal. When the housing is expelled from the birth canal by a fetus pushing it out at parturition, the brighter environment activates the photo-detector which drives associated circuitry which activates an integral tone generator to cause it to emit a pulsed, high frequency tone. A remotely located receive identifies the tone from the ejected device and activates any one of known, ultimate alerting devices, such as a radio paging system, for example.

REFERENCES:
patent: 4028687 (1977-06-01), Hamaguchi et al.
patent: 4217575 (1980-08-01), Lorette

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