Patent US3690300A successfully refreshed from Google Patents.
US3690300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for removing teat cups
Assignee: Alfa Laval AB
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Filing: 1970-11-12
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Granted: 1972-09-12
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Expires: 1990-11-12
Abstract
Abstract A milk flow indicator is inserted in the milk pipeline between the milk claw and a collection place for the milk; and upon cessation of the milk flow, the indicator actuates a means for reducing the vacuum in the milk claw and also admitting atmospheric air into the claw, prior to removal of the teat cup cluster. After the vacuum reduction, the indicator preferably actuates means for pulling the teat cups from the teats so that such pulling effects an appreciable admission of air into the teat cup liners.
Inventors
- 👤 Guido Antonio Tonelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:27
CPC Classifications
A; A01; A01J; A01J5/00; A01J5/017
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
131 words
In combination with a vacuum milking system including a teat cup cluster having a milk claw, and a milk pipeline leading from said claw for conducting milk under vacuum to a collection place, apparatus for use in automatically removing the teat cup cluster from an udder and comprising a milk flow indicator inserted in the milk pipeline, means operable by said indicator, in response to a substantial reduction of milk flow in said pipeline, for supplying atmospheric air directly to the milk claw and thereby reducing the vacuum in said milk claw prior to said removal of the teat cup cluster, and means rendered inoperable during said vacuum reduction and operable by said indicator in response to cessation of said milk flow for removing said teat cup cluster from said udder.
Claim 2
Dependent Claim
131 words
In combination with a vacuum milking system including a teat cup cluster having a milk claw, and a milk pipeline leading from said claw for conducting milk under vacuum to a collection place, apparatus for use in automatically removing the teat cup cluster from an udder and comprising a milk flow indicator inserted in the milk pipeline, means operable by said indicator, in response to a substantial reduction of milk flow in said pipeline, for supplying atmospheric air directly to the milk claw and thereby reducing the vacuum in said milk claw prior to said removal of the teat cup cluster, and means rendered inoperable during said vacuum reduction and operable by said indicator in response to cessation of said milk flow for removing said teat cup cluster from said udder.
Claim 3
Dependent Claim
34 words
The combination according to claim 1, in which said vacuum reducing means include a valve operable by said indicator, in response to said reduction of milk flow, to admit air into the milk claw.
Claim 4
Dependent Claim
33 words
The combination according to claim 1, comprising also means operable in response to said removal of the teat cup cluster to interrupt the vacuum connection with the interior of the teat cup liners.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |