Loading patent…
AssigneeMultinorm B.V.
InventorsJacobus P. M. Dessing, Pieter J. Roodenburg, Erik A. Aurik, Fokko P. Borgman
Estimating the term…
A milking cup is moved into position surrounding a cow's teat by power operated members controlled by an electrical circuit including a pair of spaced ultrasonic detectors for locating the teat. Each detector includes a transmitter and a receiver. The ultrasonic fields produced by the transmitters intersect one another at a position spaced from the transmitters. Conical reflecting surfaces are disposed adjacent the transmitters and receivers to reflect ultrasonic waves to obtain a detection field of predetermined dimensions and to determine the area within which the ultrasonic waves are reflected back to the receivers. The generatrix of the conical reflecting surfaces may be slightly concave or convex.
An automatic milking device comprising a plurality of milking cups to be placed around the teats of a cow, moving means for moving said cups into operative position relative to the teats of a cow, and control means for controlling the movement of said moving means, said control means including ultrasonic detector means, said ultrasonic detector means comprising a plurality of ultrasonic detectors spaced from one another, each of said ultrasonic detectors comprising a transmitter for transmitting ultrasonic waves and a receiver for receiving ultrasonic waves, each of the transmitters producing an ultrasonic detection field, the detection fields intersecting one another at a position spaced from said transmitters, and substantially conical reflection surface means disposed adjacent the transmitters and receivers for reflecting ultrasonic waves transmitted by said transmitters to obtain a detection field of predetermined dimensions and for reflecting ultrasonic waves received by said receivers to determine the area within which the ultrasonic waves are reflected back to said receivers.
Dependencies are inferred from the claim text.