摘要 |
Rotary pressure distributor for a carousel-type hollow-body treatment machine, comprising several treatment stations, this distributor comprising two coaxial rings ( 2, 3 ) in sealed contact, one of them ( 3 ) a rotary ring comprising communication orifices ( 6 ) connected to at least one treatment station and the other ( 2 ) stationary and comprising several slots ( 7 ) connected to a pressure source of the machine, these orifices and slots being distributed over several concentric circumferences ( 9 ) of different diameters; the orifices and/or the slots positioned on the different diameters have anterior and posterior ends ( 11, 12 ) shaped in such a way that as the orifices slide past the respective slots, the rates at which the surface area of the passage ( 13 ) defined by each orifice and the associated slot increase upon opening and decrease upon closing are substantially the same over all the circumferences.
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