Automatic milking apparatus
AssigneeBritish Technology Group Limited
InventorRobert Joseph Grindal
Life of this patent
Estimating the term…
Abstract
A teat cup liner (10) for use in hydraulic milking apparatus, comprises an upper section (20,21) adapted to encircle the teat without collapse on the teat end during milking, and a relatively flexible lower section (23) located beneath and spaced from the teat end and adapted to open and close during the pulsation cycle.
Claims10
A teat cup liner for use in a hydraulic milking apparatus, the teat cup liner comprising an upper section adapted to encircle a teat with at least a lower portion of said upper section sufficiently inflexible so as not to collapse on the teat end during milking, and a relatively flexible lower section located beneath and spaced from the teat end and adapted to open and close during a pulsation cycle but not to collapse on the teat end,
- wherein the upper section of the liner defines a downwardly tapering bore which subtends an included cone angle of between 5.degree. and 10.degree..
A method of hydraulic milking using a liner, the method including the step of periodically reducing an amount of vacuum in a liner core below a teat end to near atmospheric pressure thereby to inhibit a flow of milk from a cow's teat without collapse of the liner on the teat end.
Dependencies are inferred from the claim text.