TEAT CUP Russian patent published in 1995 - IPC

FIELD: agriculture. SUBSTANCE: teat cup has body 1 and teat cup tube 2 forming interwall chamber 3 accommodating pinching air chambers 4 and mechanism for stretching teat cup tube. Teat cup tube 2 has stretched section in area of adjoining of middle pair of air chambers to it. Lower pair of pinching air chambers is fixed in frame 7 and fastened to teat cup tube 2 having additional stretched section located between area of adjoining to tube of lower pair of pinching air chambers and milk discharge outlet 9. Mechanism for stretching teat cup tube has rigidity of less than 1 kgf/cm and made in form of bellows installed in each other and connected in their upper part with body, and in lower part, with milk discharge outlet 9. When pressure is supplied to upper pair of pinching air chambers 4, teat is pinched at its base. Then, after supply of pressure to underlying pair of air chamber, milk is removed from teat. For compensation of sliding of cup from teat, use is made of stretching mechanism of teat cup tube which ensures drawing of cup upward over teat during each cycle of milking. EFFECT: higher efficiency. 2 dwg