Patent ID: RE40511

Claim:
A multi-port rotary disc valve comprising a stator with a plurality of fluid flow ports and a rotary distributor with a plurality of channels arranged in a channel pattern, said rotary distributor comprising a rotor and a mask mounted movably thereon, said mask being, on the one hand, movable with respect to the rotor and, on the other hand, being adapted for rotation together with the rotor as a single body, the rotor and the mask accommodating said plurality of channels; said channels being adapted to connect said ports between them and/or to the environment in a plurality of predetermined combinations, each combination being associated with an angular position of the rotary distributor with respect to the stator, a succession of such combinations being performed during a full or partial unidirectional turn of said rotary distributor single body constituting a predetermined sequence ; said rotary distributor comprising a rotor and a mask mounted movably thereon, the rotor and the mask accommodating said plurality of channels, and , said mask being adapted to change said channel pattern by changing its position with respect to said rotor, thereby enabling said disc valve to perform different predetermined sequences corresponding to different positions of the mask.