Method and apparatus for delivery alarm for livestock animals
First Claim
1. Apparatus for providing an alarm upon the delivery of a livestock animal, comprisinga case for insertion into the birth canal of said livestock animal, said case being pushed out of said birth canal during delivery of a fetus,a transmitter including an oscillator located within said case for producing a delivery alarm signal, andan antenna coupled to said oscillator as a load thereof and extending outside and away from said case and toward the mouth of said birth canal, said oscillator being continuously supplied with electric power and biased such that when the load on said antenna is heavy, the oscillation is substantially stopped near the state where the oscillation is about the start, and when the load on said antenna is relatively high, an oscillation is started;
- the load on said antenna being heavy when the antenna is within the birth canal, and becoming relatively light causing the antenna to emit a signal from the oscillator when the antenna is pushed out of the birth canal.
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Abstract
An alarm apparatus for the delivery of livestock animals is inserted in the birth canal of a pregnant livestock animal such as a cow or a pig whose delivery is expected to be close at hand, so that it may warn of the onset of delivery and the necessity to take care for the delivery, etc. when it is pushed out of the birth canal by a fetus at the time of the onset of delivery.
23 Citations
6 Claims
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1. Apparatus for providing an alarm upon the delivery of a livestock animal, comprising
a case for insertion into the birth canal of said livestock animal, said case being pushed out of said birth canal during delivery of a fetus, a transmitter including an oscillator located within said case for producing a delivery alarm signal, and an antenna coupled to said oscillator as a load thereof and extending outside and away from said case and toward the mouth of said birth canal, said oscillator being continuously supplied with electric power and biased such that when the load on said antenna is heavy, the oscillation is substantially stopped near the state where the oscillation is about the start, and when the load on said antenna is relatively high, an oscillation is started; - the load on said antenna being heavy when the antenna is within the birth canal, and becoming relatively light causing the antenna to emit a signal from the oscillator when the antenna is pushed out of the birth canal.
- View Dependent Claims (2, 3, 4, 5, 6)
Specification