Variable shut off teat cup liner
US6742475B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2002 |
| Grant date | Jun 1, 2004 |
| Priority date | — |
| Expiry date | Dec 18, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01J5/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A variable shut off teat cup liner has a mouthpiece, a barrel and a short milk tube adapted for mounting onto milking claw. The short milk tube includes a segment for engagement with an edge of a claw nipple defining an opening, the segment being intended for bending over the opening to substantially close it to passage of vacuum-drawn air therethrough when the teat cup liner is in a non-milking generally downwardly bending position. The segment has circumferentially extending grooves and longitudinally extending grooves which form lugs which provide improved cut resistance. The circumferentially extending grooves have different axial spacing whereby the amount of overlap of the short milk tube over the nipple may be varied to provide the proper amount of bending.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.