Patent US3583389A successfully refreshed from Google Patents.
US3583389A
Expired / Lapsed
US
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Method of detecting approaching birth in mammals
Assignee: NDCH AND CO
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Filing: 1968-06-25
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Granted: 1971-06-08
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Expires: 1988-06-25
Abstract
Abstract Method and apparatus for detecting impending birth in livestock wherein a capsule containing an electromagnetic wave transmitter is positioned within the birth canal of the animal and a temperature sensing device is used to operate the transmitter as determined by the existence of a predetermined temperature. A receiver tuned to the output frequency of the transmitter in the capsule is positioned remotely from the transmitter and provides a visual or audible alarm when the capsule is expelled just prior to birth.
Inventors
- 👤 Douglas G Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:57
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/02; G01K1/024; A; A61; A61B; A61B5/00; A61B5/07; A61B5/073; A61D; A61D17/00; A61D17/008; Y; Y10; Y10S; Y10S128/00; Y10S128/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
The method of detecting impending birth in an animal which comprises positioning an electromagnetic radiation transmitter device in the birth canal of the animal, said transmitter device being inoperative at the temperature within said canal and operative at a temperature lower than said canal temperature, positioning a receiver tuned to receive radiation from said transmitter device in a location remote from said transmitter device, and generating an alarm signal in response to radiation received from said transmitter device.
Claim 2
Independent Claim
78 words
The method of detecting impending birth in an animal which comprises positioning an electromagnetic radiation transmitter device in the birth canal of the animal, said transmitter device being inoperative at the temperature within said canal and operative at a temperature lower than said canal temperature, positioning a receiver tuned to receive radiation from said transmitter device in a location remote from said transmitter device, and generating an alarm signal in response to radiation received from said transmitter device.
References Cited (Backward Citations)
US3274994A
Cited
US3273559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |