US4224949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and electrical resistance probe for detection of estrus in bovine
Assignee: Cornell Research Foundation Inc
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Filing: 1977-11-17
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Granted: 1980-09-30
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Expires: 1997-11-17
Abstract
Abstract This invention is drawn to a bovine vaginal probe capable of measuring electrical resistance in a bovine vaginal tract with sufficient accuracy to allow detection of changes in electrical resistance indicative of estrus. The electrodes of the probe are generally axially aligned on the surface of a generally cylindrical support. In the essentially axially parallel electrode configuration, in order to obtain the desired sensitivity where one set of electrodes are employed, the electrodes should be separated from each other by at least 45 DEG and preferably at least about 90 DEG . One preferred essentially axially parallel configuration employs two sets of electrodes, each separated by approximately 90 DEG so that two sets of resistance figures, ventral and dorsal can be obtained.
Inventors
- 👤 Norman R. Scott
- 👤 Rick Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:51
CPC Classifications
A; A61; A61D; A61D17/00; A61D17/002; A61B; A61B10/00; A61B10/0012; A61B2010/0016
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
102 words
A bovine vaginal probe for detecting estrus which comprises: (a) a relatively non-conductive support means, having a generally cylindrical shape, adapted for insertion into a bovine vaginal tract and contact with the vaginal mucus therein; (b) having secured to the surface thereof at least one pair of substantially parallel electrodes aligned parallel to or at an angle of less than 45° from the longitudinal axis of said support means, said electrodes being separated from each other by at least 45°; (c) said electrodes being electrically connectable to an AC ohm-meter adapted to determine the electrical resistance of vaginal mucus between said electrodes.
Claim 2
Dependent Claim
102 words
A bovine vaginal probe for detecting estrus which comprises: (a) a relatively non-conductive support means, having a generally cylindrical shape, adapted for insertion into a bovine vaginal tract and contact with the vaginal mucus therein; (b) having secured to the surface thereof at least one pair of substantially parallel electrodes aligned parallel to or at an angle of less than 45° from the longitudinal axis of said support means, said electrodes being separated from each other by at least 45°; (c) said electrodes being electrically connectable to an AC ohm-meter adapted to determine the electrical resistance of vaginal mucus between said electrodes.
Claim 3
Dependent Claim
11 words
The probe of claim 1 electrically connected to said AC ohm-meter.
Claim 4
Dependent Claim
12 words
The probe of claim 1 where the electrodes are substantially axially parallel.
Claim 5
Dependent Claim
17 words
The probe of claim 3 comprising two sets of electrodes each electrode spaced apart by about 90°.
Claim 6
Dependent Claim
28 words
The probe of claim 3 wherein each electrode is between about 1/16 inch and about 1/2 inch wide and between about 1 inch to about 4 inches long.
Claim 7
Independent Claim
130 words
A method of detecting estrus in a bovine which comprises periodically determining the electrical resistance of the bovine vaginal mucus using a bovine vaginal probe which comprises: (a) a relatively non-conductive support means, having a generally cylindrical shape, adapted for insertion into a bovine vaginal tract and contact with the vaginal mucus therein; (b) having secured to the surface thereof at least one pair of substantially parallel electrodes aligned parallel to or at an angle of less than 45° from the longitudinal axis of said support means, said electrodes being separated from each other by at least 45°; (c) said electrodes being electrically connected to an AC ohm-meter adapted to determine the electrical resistance of vaginal mucus between said electrodes, and detecting a change in electrical resistance indicative of estrus.
Claim 8
Independent Claim
130 words
A method of detecting estrus in a bovine which comprises periodically determining the electrical resistance of the bovine vaginal mucus using a bovine vaginal probe which comprises: (a) a relatively non-conductive support means, having a generally cylindrical shape, adapted for insertion into a bovine vaginal tract and contact with the vaginal mucus therein; (b) having secured to the surface thereof at least one pair of substantially parallel electrodes aligned parallel to or at an angle of less than 45° from the longitudinal axis of said support means, said electrodes being separated from each other by at least 45°; (c) said electrodes being electrically connected to an AC ohm-meter adapted to determine the electrical resistance of vaginal mucus between said electrodes, and detecting a change in electrical resistance indicative of estrus.
Claim 9
Dependent Claim
110 words
A bovine vaginal probe for detecting estrus which comprises: (a) a relatively non-conductive support means, having a generally cylindrical shape, adapted for insertion into a bovine vaginal tract and contact with the vaginal mucus therein; (b) having secured to the surface thereof two sets of substantially parallel electrodes substantially axially aligned with the longitudinal axis of said support means, each electrode spaces apart by about 90°, and each electrode being between about 1/16 inch and about 1/2 inch wide to about 1 inch to about 4 inches long; (c) said electrodes being electrically connectable to an AC ohm-meter adapted to determine the electrical resistance of vaginal mucus between said electrodes.
Claim 10
Dependent Claim
110 words
A bovine vaginal probe for detecting estrus which comprises: (a) a relatively non-conductive support means, having a generally cylindrical shape, adapted for insertion into a bovine vaginal tract and contact with the vaginal mucus therein; (b) having secured to the surface thereof two sets of substantially parallel electrodes substantially axially aligned with the longitudinal axis of said support means, each electrode spaces apart by about 90°, and each electrode being between about 1/16 inch and about 1/2 inch wide to about 1 inch to about 4 inches long; (c) said electrodes being electrically connectable to an AC ohm-meter adapted to determine the electrical resistance of vaginal mucus between said electrodes.
Claim 11
Independent Claim
121 words
A method of detecting estrus in a bovine which comprises periodically determining the electrical resistance of the bovine vaginal mucus using a bovine vaginal probe which comprises: (a) a relatively non-conductive support means, having a generally cylindrical shape, adapted for insertion into a bovine vaginal tract and contact with the vaginal mucus therein; (b) having secured to the surface thereof at least one pair of substantially parallel electrodes substantially parallel to the longitudinal axis of said support means, said electrodes being separated from each other by at least 45°; (c) said electrodes being electrically connected to an AC ohm-meter adapted to determine the electrical resistance of vaginal mucus between said electrodes, and detecting a change in electrical resistance indicative of estrus.
Claim 12
Independent Claim
121 words
A method of detecting estrus in a bovine which comprises periodically determining the electrical resistance of the bovine vaginal mucus using a bovine vaginal probe which comprises: (a) a relatively non-conductive support means, having a generally cylindrical shape, adapted for insertion into a bovine vaginal tract and contact with the vaginal mucus therein; (b) having secured to the surface thereof at least one pair of substantially parallel electrodes substantially parallel to the longitudinal axis of said support means, said electrodes being separated from each other by at least 45°; (c) said electrodes being electrically connected to an AC ohm-meter adapted to determine the electrical resistance of vaginal mucus between said electrodes, and detecting a change in electrical resistance indicative of estrus.
Claim 13
Independent Claim
137 words
A method of detecting estrus in a bovine which comprises periodically determining the electrical resistance of the bovine vaginal mucus using a bovine vaginal probe which comprises: (a) a relatively non-conductive support means, having a generally cylindrical shape, adapted for insertion into a bovine vaginal tract and contact with the vaginal mucus therein; (b) having secured to the surface thereof two sets of substantially parallel electrodes substantially axially aligned with the longitudinal axis of said support means; each electrode spaced apart by about 90° and each electrode being between about 1/16 inch and about 1/2 inch wide, and about 1 to about 4 inches long; (c) said electrodes being electrically connected to an AC ohm-meter adapted to determine the electrical resistance of vaginal mucus between said electrodes, and detecting a change in electrical resistance indicative of estrus.
Claim 14
Independent Claim
137 words
A method of detecting estrus in a bovine which comprises periodically determining the electrical resistance of the bovine vaginal mucus using a bovine vaginal probe which comprises: (a) a relatively non-conductive support means, having a generally cylindrical shape, adapted for insertion into a bovine vaginal tract and contact with the vaginal mucus therein; (b) having secured to the surface thereof two sets of substantially parallel electrodes substantially axially aligned with the longitudinal axis of said support means; each electrode spaced apart by about 90° and each electrode being between about 1/16 inch and about 1/2 inch wide, and about 1 to about 4 inches long; (c) said electrodes being electrically connected to an AC ohm-meter adapted to determine the electrical resistance of vaginal mucus between said electrodes, and detecting a change in electrical resistance indicative of estrus.
References Cited (Backward Citations)
US3313293A
Cited
US3339542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-30 | 1984-03-31 | 1984-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-30 | 1988-03-31 | 1988-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-30 | 1992-03-31 | 1992-09-30 | $7700.00 | Window Closed / Lapsed |