Optical milk flow detector and vacuum shutoff for milker
US4756274A · kind A · utility
15Cited by
8References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 21, 1987 |
| Grant date | Jul 12, 1988 |
| Priority date | — |
| Expiry date | Aug 21, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01J5/017
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An infrared light sensor outside the milk flow path is connected with an end of milking indicator. The light sensor is connected with a milk flow detector which actuates the indicator giving a visual or audible signal when milk flow ceases. Vacuum is shut off and the milker is retracted. Electrical power for the light source, light sensor and indicator circuit is derived from the milker pulsator signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.